EN 1170:2024
(Main)Precast concrete products - Test methods for glassfibre reinforced concrete
Precast concrete products - Test methods for glassfibre reinforced concrete
This document specifies test methods for identifying the performance of a glassfibre reinforced concrete (GRC) composition in terms of bending strength, water absorption, dry density and dimensional variations.
These methods can be used for type testing or for the evaluation of the uniformity of the production process. They can be used on GRC coupons prepared as described in this document, or on samples cut out of GRC products.
NOTE A test to assess the influence of time on the mechanical properties (i.e. LOP and MOR) is described for information in Annex C. Other methods can be found in scientific literature.
Betonfertigteile - Prüfverfahren für Glassfaserbeton
Dieses Dokument legt Prüfverfahren für die Ermittlung der Leistungsfähigkeit einer Glasfaserbeton (GFB) Zusammensetzung hinsichtlich Biegefestigkeit, Wasseraufnahme, Trockenrohdichte und Maßänderungen fest.
Diese Verfahren können für Typprüfungen oder zur Beurteilung der Gleichmäßigkeit des Produktions-prozesses angewendet werden. Sie können an GFB Probekörpern angewendet werden, die wie in diesem Dokument beschrieben, hergestellt werden, oder an Proben, die aus GFB Produkten ausgeschnitten werden.
ANMERKUNG Eine Prüfung zur Bewertung des Einflusses der Zeit auf die mechanischen Eigenschaften (d. h. LOP (Proportionalitätsgrenze, en: limit of proportionality) und MOR [Biegezugfestigkeit, en: modulus of rupture]) ist in Anhang C beschrieben. Andere Verfahren können in der wissenschaftlichen Literatur gefunden werden.
Produits préfabriqués en béton - Méthodes d'essai des composites ciment-verre
Le présent document spécifie des méthodes d’essai pour identifier les performances d’une formule de composite ciment-verre (CCV) en termes de résistance à la flexion, d’absorption d’eau, de masse volumique sèche et de variations dimensionnelles.
Ces méthodes peuvent être utilisées pour les essais de type ou pour l’évaluation de l’uniformité du procédé de fabrication. Elles peuvent être utilisées sur des coupons de CCV préparés comme décrit dans le présent document, ou sur des échantillons découpés dans des produits en CCV.
NOTE Un essai pour évaluer l'influence du temps sur les propriétés mécaniques (i.e. LOP et MOR) est aussi décrit à titre informatif dans l’Annexe C. D'autres méthodes peuvent être trouvées dans la littérature scientifique.
Montažni betonski izdelki - Preskusne metode za beton, armiran s steklenimi vlakni
Ta dokument določa preskusne metode za ugotavljanje učinkovitosti sestave steklobetonskega kompozita (GRC) v zvezi z upogibno trdnostjo, absorpcijo vode, suho gostoto in dimenzijskim odstopanjem.
Te metode je mogoče uporabljati za tipsko preskušanje ali za oceno enotnosti proizvodnega procesa. Uporabiti jih je mogoče za preskusne vzorce steklobetonskega kompozita, pripravljene v skladu s tem dokumentom, ali za vzorce, izrezane iz izdelkov iz steklobetonskega kompozita.
OPOMBA: Preskus, s katerim se ocenjuje vpliv časa na mehanske lastnosti (tj. upogibna trdnost (LOP) in natezna trdnost (MOR)), je opisan v informativnem dodatku C. Druge metode so navedene v znanstveni literaturi.
General Information
- Status
- Published
- Publication Date
- 17-Dec-2024
- Technical Committee
- CEN/TC 229 - Precast concrete products
- Current Stage
- 6060 - Definitive text made available (DAV) - Publishing
- Start Date
- 18-Dec-2024
- Due Date
- 21-Jul-2025
- Completion Date
- 18-Dec-2024
Relations
- Effective Date
- 19-Apr-2023
- Effective Date
- 19-Apr-2023
- Replaces
EN 1170-8:2008 - Test method for glass-fibre reinforced cement - Part 8: Cyclic weathering type test - Effective Date
- 19-Apr-2023
- Effective Date
- 19-Apr-2023
- Effective Date
- 19-Apr-2023
- Effective Date
- 19-Apr-2023
- Effective Date
- 19-Apr-2023
- Effective Date
- 19-Apr-2023
Overview - EN 1170:2024 (CEN)
EN 1170:2024, published by CEN, specifies standardized test methods for glassfibre reinforced concrete (GRC) used in precast concrete products. The standard defines procedures to determine a GRC composition’s performance in terms of bending strength (LOP and MOR), water absorption, dry density and dimensional variations due to moisture. Methods apply to purpose-made GRC test coupons or to samples cut from finished products and support both type testing and evaluation of production uniformity.
Key topics and technical requirements
- Scope of tests: bending (four‑point bending to obtain limit of proportionality and modulus of rupture), water absorption by immersion, dry density and extremes of dimensional change (shrinkage/expansion).
- Sampling & preparation: reference test boards (flat moulds ≥ 500 × 500 mm with 12 ± 0.5 mm upstand) from which minimum 275 mm × (50 ± 2) mm test coupons are cut from the central area. Annex B permits coupons cut from products where appropriate.
- Conditioning: coupons can be tested “wet” (immersed 24 h at 20 ± 5 °C) or “dry” (stored in test environment 24 h). Note: some GRC systems (e.g., thermosetting acrylic dispersions) are normally tested dry.
- Apparatus & accuracy: bending machines must meet EN ISO 7500-1 class 1 accuracy and be fitted with a four‑point bending device and displacement sensor (0.01 mm). Test software is used or manual calculation for LOP, MOR, stress and strain.
- Reporting & interpretation: includes expression of results (deflection/load at LOP and failure, water absorption percentage, dry density and dimensional change per metre) and specific annexes (A - production-related parameters; B - product-cut coupons; C - informative cyclic ageing test).
Practical applications and users
Who uses EN 1170:2024:
- Precast GRC manufacturers - for type approval, R&D and production quality control.
- Third‑party testing laboratories - to provide accredited test reports.
- Specifiers, architects and façade engineers - to verify material performance for cladding, architectural panels and decorative precast elements.
- Quality assurance and compliance teams - to demonstrate conformity across European markets.
Practical benefits:
- Provides repeatable, recognized test methods for material selection, process control and performance comparison.
- Facilitates harmonized testing across CEN member states and supports product certification and procurement specifications.
Related standards
- EN ISO 7500-1 - calibration/verification of static testing machines (referenced for machine accuracy).
- EN 15191 - classification of GRC performance (terminology and classification referenced).
- EN 1170:2024 supersedes earlier EN 1170 parts (consolidated approach) and aligns test requirements for modern precast GRC applications.
Keywords: EN 1170:2024, GRC test methods, glassfibre reinforced concrete, bending strength, water absorption, dry density, dimensional variations, precast concrete testing.
Frequently Asked Questions
EN 1170:2024 is a standard published by the European Committee for Standardization (CEN). Its full title is "Precast concrete products - Test methods for glassfibre reinforced concrete". This standard covers: This document specifies test methods for identifying the performance of a glassfibre reinforced concrete (GRC) composition in terms of bending strength, water absorption, dry density and dimensional variations. These methods can be used for type testing or for the evaluation of the uniformity of the production process. They can be used on GRC coupons prepared as described in this document, or on samples cut out of GRC products. NOTE A test to assess the influence of time on the mechanical properties (i.e. LOP and MOR) is described for information in Annex C. Other methods can be found in scientific literature.
This document specifies test methods for identifying the performance of a glassfibre reinforced concrete (GRC) composition in terms of bending strength, water absorption, dry density and dimensional variations. These methods can be used for type testing or for the evaluation of the uniformity of the production process. They can be used on GRC coupons prepared as described in this document, or on samples cut out of GRC products. NOTE A test to assess the influence of time on the mechanical properties (i.e. LOP and MOR) is described for information in Annex C. Other methods can be found in scientific literature.
EN 1170:2024 is classified under the following ICS (International Classification for Standards) categories: 91.100.30 - Concrete and concrete products. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 1170:2024 has the following relationships with other standards: It is inter standard links to EN 1170-4:1997, EN 1170-6:1997, EN 1170-8:2008, EN 1170-7:1997, EN 1170-2:1997, EN 1170-3:1997, EN 1170-1:1997, EN 1170-5:1997. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
You can purchase EN 1170:2024 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of CEN standards.
Standards Content (Sample)
SLOVENSKI STANDARD
01-april-2025
Nadomešča:
SIST EN 1170-1:2001
SIST EN 1170-2:2001
SIST EN 1170-3:2001
SIST EN 1170-4:2001
SIST EN 1170-5:2001
SIST EN 1170-6:2001
SIST EN 1170-7:2001
SIST EN 1170-8:2009
Montažni betonski izdelki - Preskusne metode za steklobetonski kompozit
Precast concrete products - Test methods for glassfibre reinforced concrete
Betonfertigteile - Prüfverfahren für Glasfaserbeton
Produits préfabriqués en béton - Méthodes d'essai des composites ciment-verre
Ta slovenski standard je istoveten z: EN 1170:2024
ICS:
91.100.30 Beton in betonski izdelki Concrete and concrete
products
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN 1170
EUROPEAN STANDARD
NORME EUROPÉENNE
December 2024
EUROPÄISCHE NORM
ICS 91.100.30 Supersedes EN 1170-1:1997, EN 1170-2:1997, EN
1170-3:1997, EN 1170-4:1997, EN 1170-5:1997, EN
1170-6:1997, EN 1170-7:1997, EN 1170-8:2008
English Version
Precast concrete products - Test methods for glassfibre
reinforced concrete
Produits préfabriqués en béton - Méthodes d'essai des Betonfertigteile - Prüfverfahren für Glassfaserbeton
composites ciment-verre
This European Standard was approved by CEN on 1 December 2024.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 1170:2024 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Symbols and abbreviated terms . 4
4 Sampling and preparation of test pieces . 5
4.1 Apparatus . 5
4.2 Test coupons . 5
5 Bending strength . 6
5.1 General. 6
5.2 Apparatus . 7
5.3 Procedure . 7
5.4 Expression of results . 9
5.4.1 Deflection and load at the limit of proportionality . 9
5.4.2 Deflection and load on failure . 10
5.4.3 Deformation and stress . 10
5.5 Test report . 10
6 Water absorption and dry density . 11
6.1 General. 11
6.2 Apparatus . 11
6.3 Procedure . 12
6.3.1 Test pieces . 12
6.3.2 Test method . 13
6.4 Expression of results . 14
6.4.1 Water absorption by immersion . 14
6.4.2 Dry density . 14
6.5 Test report sheet . 14
7 Measurement of extremes of dimensional variations due to moisture content . 15
7.1 General. 15
7.2 Apparatus . 15
7.3 Procedure . 15
7.3.1 Test pieces . 15
7.3.2 Test method . 16
7.4 Expression of results . 16
7.4.1 Shrinkage value . 16
7.4.2 Expansion value . 17
7.4.3 Value of extreme dimensional variations . 17
7.5 Interpreting the test . 17
7.6 Test report . 17
Annex A (normative) Specific parameters related to production methods . 19
Annex B (normative) Specific parameters related to test coupons cut from GRC products . 20
Annex C (informative) Cyclic ageing type test . 21
European foreword
This document EN 1170:2024 has been prepared by Technical Committee CEN/TC 229 “Precast Concrete
Products”, the secretariat of which is held by AFNOR.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by June 2025, and conflicting national standards shall be
withdrawn at the latest by June 2025.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 1170-1:1997, EN 1170-2:1997, EN 1170-3:1997, EN 1170-4:1997,
EN 1170-5:1997, EN 1170-6:1997, EN 1170-7:1997 and EN 1170-8:2008.
EN 1170-2:1997, EN 1170-3:1997, EN 1170-4:1997, EN 1170-5:1997, EN 1170-6:1997, EN 1170-7:1997
and EN 1170-8:2008:
— removal of the tests described previously in parts 1 to 4, not referred to in EN 1169;
— modification of the dimensions of the mould for test boards;
— increase of the load speed for the flexural strength test;
— introduction of a sample volume determination by weighing in water;
— provisions to allow the cutting of test coupons directly from products.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia,
Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland,
Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North
Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the United
Kingdom.
1 Scope
This document specifies test methods for identifying the performance of a glassfibre reinforced concrete
(GRC) composition in terms of bending strength, water absorption, dry density and dimensional
variations.
These methods can be used for type testing or for the evaluation of the uniformity of the production
process. They can be used on GRC coupons prepared as described in this document, or on samples cut
out of GRC products.
NOTE A test to assess the influence of time on the mechanical properties (i.e. LOP and MOR) is described for
information in Annex C. Other methods can be found in scientific literature.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN ISO 7500-1, Metallic materials — Calibration and verification of static uniaxial testing machines — Part
1: Tension/compression testing machines — Calibration and verification of the force-measuring system (ISO
7500-1)
EN 15191, Precast concrete products — Classification of glassfibre reinforced concrete performance
3 Symbols and abbreviated terms
For the purposes of this document, the terms, definitions, symbols and abbreviated terms given in
EN 15191 and the following symbols apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp/
— IEC Electropedia: available at https://www.electropedia.org/
b width of test piece, in millimetres
d thickness of test piece, in millimetres
F load at limit of proportionality, in newtons
LOP
failure load, in Newtons
FMOR
l length of test piece, in millimetres
L span, in millimetres
L distance between washers measured at the beginning of the test, in micrometres
n,0
L distance between washers measured after 96 h immersion, in micrometres
n,1
L distance between washers measured after 21 days drying in oven and 6 h stabilization, in
n,2
micrometres
m mass of a test piece in air, in grammes
a
m mass of a test piece after drying, “dry mass”, in grammes
d
mst apparent mass of the immersed stirrup, in grammes
m apparent mass of the immersed test piece, in grammes
w
m mass of a test piece after immersion for “j” days, “wet mass”, in grammes
wj
m mass of test piece at the beginning of the test, in grammes
n,0
m mass of test piece after 96 h immersion, in grammes
n,1
m mass of test piece after 21 days oven drying and 6 h stabilization, in grammes
n,2
V volume of a test piece, in cm
Υ water absorption by immersion, in percentage by mass
Δ deflection at limit of proportionality, in millimetres
LOP
Δ deflection at failure, in millimetres
MOR
value of extreme dimensional variation, in millimetres per metre
∆l
c
l
value of expansion, in millimetres per metre; this is the arithmetic mean of the expansion
∆l
e
values of the three test pieces tested
l
value of residual shrinkage, in millimetres per metre; this is the arithmetic mean of the
∆l
s
shrinkage values of the three test pieces tested
l
ε strain at limit of proportionality
LOP
ε strain at failure
MOR
ρ dry density, in kg/m
d
ρ density of water, at 20 °C, taken as 998 kg/m
w
σ stress at limit of proportionality, in megapascals
LOP
σMOR stress at failure, in megapascals
4 Sampling and preparation of test pieces
4.1 Apparatus
Flat test board moulds with internal dimensions of not less than 500 mm × 500 mm with a (12 ± 0,5) mm
upstand around the edges from which a minimum of 4 test coupons, each 275 mm minimum × (50 ± 2)
mm can be cut; the test coupons shall be taken from the central area within a border approximately
50 mm from each edge.
4.2 Test coupons
Make sample boards using the moulds described in 4.1 for each spray team, if Sprayed GRC, or mixer, if
Premix GRC, per day or production shift, with no facing layer (solid GRC only) under the same conditions
as for the actual production they represent.
Where the direction of production can have an influence on the results, Annex A may apply.
Demould and store the sample boards under the same conditions as for the actual production they
represent.
Cut out by sawing in each panel, at a minimum distance of 50 mm from the edges, 4 test coupons from
the positions illustrated in Figure 1.
Mark the test coupons as shown in Figure 1.
Dimensions in mm
Key
TC1 to TC4 test coupons for bending strength
TC5 to TC8 test coupons for water absorption and dry density
TZ test zone
Figure 1 — Position and identification of test coupons
Dimensions of the test coupons:
— width: (50 ± 2) mm,
— length: minimum 275 mm.
The test board method is the reference method, but in some cases, it may be considered necessary to cut
coupons directly from products. In this case, Annex B applies.
Storage of the test boards/coupons:
The test coupons shall be stored/cured under the same conditions as the products which they represent.
5 Bending strength
5.1 General
This clause specifies a test method for identifying the stress and deformation performance, at the limit of
proportionality and on failure, of a GRC composition subjected to bending.
It is used for the evaluation of the uniformity of the production process. It can also be used to establish,
for a given composition of GRC, the relationship between the conventional strength at 28 days and the
strength at 7 days, or at other ages.
This method can be used on GRC coupons prepared as described in this document, or on samples cut out
of GRC products as described in Annex B.
5.2 Apparatus
The apparatus comprises:
— a bending test machine of accuracy meeting the class 1 requirements specified in EN ISO 7500-1;
it shall be fitted with a four-point bending device (minimum diameter of supports: 6 mm) which must
contain sufficient articulation to enable the load to be applied evenly across the test specimen at each
position of contact. The machine shall incorporate a displacement sensor (accurate to 0,01 mm) to
track the movement of the crosshead which applies the load. The test machine shall incorporate or
be connected to a computer with software suitable for plotting the load/displacement curve and
detecting the loads and displacements at the limit of proportionality (LOP) modulus of rupture
(MOR). The LOP and MOR stress and strain values may be calculated manually or by using the test
machine’s software if included;
— a flat-bottomed tank filled with water maintained at (20 ± 5) °C;
the size of the tank shall be sufficient to hold the test coupons from 1 day production; multiple tanks
may be used;
— a rule graduated in 0,5 mm increments;
— a calliper graduated in 0,1 mm increments.
5.3 Procedure
Test coupons may be “wet” or “dry” conditioned prior to testing provided that the conditioning process
is noted on the test report.
If the test coupons are to be wet conditioned (see note below) immerse them in water at (20 ± 5) °C for
24 h. Dry the surfaces with a towel prior to testing.
If the test coupons are not wet conditioned, they shall be stored in the same environment as the test
machine for a minimum of 24 h before testing.
NOTE It is normal to test GRC containing thermosetting pure acrylic ester co-polymer dispersions dry (i.e.
without wet conditioning for 24 h prior to testing).
Position the test coupons in the testing machine, as shown in Figure 2.
Key
F load
L span
b width
d thickness
l length
Figure 2 — Position of test coupons in the testing machine
For each test panel, the test coupons marked “1” and “3” are tested with the “mould” face down on the
two bottom supports and those marked “2” and “4” with the “mould” face in contact with the top supports.
To start the test, set the test speed to (5 ± 0,5) mm/min.
Continue the test until the test coupon fails and the load reduces to approximately 90 % of the maximum
load.
NOTE Most test machines can be programmed to stop at a pre-set limit. If not, operator intervention is
required.
Using a vernier calliper, measure the thickness of the test coupon at four points, two from each side of
the line of failure (see Figure 3), and the width of the test piece coupon as close as possible to failure zone
to the nearest 0,1 mm.
Record the results and calculate the average thickness at the line of failure.
Dimensions in millimetres
Key
1 support
2 line of load
3 thickness measurement zone
4 zone where the failure shall happen
b line of failure
L test span
Figure 3 — Measurement of the Test Coupon Width and Thickness
Failure shall
...
SLOVENSKI STANDARD
01-april-2025
Nadomešča:
SIST EN 1170-1:2001
SIST EN 1170-2:2001
SIST EN 1170-3:2001
SIST EN 1170-4:2001
SIST EN 1170-5:2001
SIST EN 1170-6:2001
SIST EN 1170-7:2001
SIST EN 1170-8:2009
Montažni betonski izdelki - Preskusne metode za beton, armiran s steklenimi
vlakni
Precast concrete products - Test methods for glassfibre reinforced concrete
Betonfertigteile - Prüfverfahren für Glasfaserbeton
Produits préfabriqués en béton - Méthodes d'essai des composites ciment-verre
Ta slovenski standard je istoveten z: EN 1170:2024
ICS:
91.100.30 Beton in betonski izdelki Concrete and concrete
products
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN 1170
EUROPEAN STANDARD
NORME EUROPÉENNE
December 2024
EUROPÄISCHE NORM
ICS 91.100.30 Supersedes EN 1170-1:1997, EN 1170-2:1997, EN
1170-3:1997, EN 1170-4:1997, EN 1170-5:1997, EN
1170-6:1997, EN 1170-7:1997, EN 1170-8:2008
English Version
Precast concrete products - Test methods for glassfibre
reinforced concrete
Produits préfabriqués en béton - Méthodes d'essai des Betonfertigteile - Prüfverfahren für Glassfaserbeton
composites ciment-verre
This European Standard was approved by CEN on 1 December 2024.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 1170:2024 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Symbols and abbreviated terms . 4
4 Sampling and preparation of test pieces . 5
4.1 Apparatus . 5
4.2 Test coupons . 5
5 Bending strength . 6
5.1 General. 6
5.2 Apparatus . 7
5.3 Procedure . 7
5.4 Expression of results . 9
5.4.1 Deflection and load at the limit of proportionality . 9
5.4.2 Deflection and load on failure . 10
5.4.3 Deformation and stress . 10
5.5 Test report . 10
6 Water absorption and dry density . 11
6.1 General. 11
6.2 Apparatus . 11
6.3 Procedure . 12
6.3.1 Test pieces . 12
6.3.2 Test method . 13
6.4 Expression of results . 14
6.4.1 Water absorption by immersion . 14
6.4.2 Dry density . 14
6.5 Test report sheet . 14
7 Measurement of extremes of dimensional variations due to moisture content . 15
7.1 General. 15
7.2 Apparatus . 15
7.3 Procedure . 15
7.3.1 Test pieces . 15
7.3.2 Test method . 16
7.4 Expression of results . 16
7.4.1 Shrinkage value . 16
7.4.2 Expansion value . 17
7.4.3 Value of extreme dimensional variations . 17
7.5 Interpreting the test . 17
7.6 Test report . 17
Annex A (normative) Specific parameters related to production methods . 19
Annex B (normative) Specific parameters related to test coupons cut from GRC products . 20
Annex C (informative) Cyclic ageing type test . 21
European foreword
This document EN 1170:2024 has been prepared by Technical Committee CEN/TC 229 “Precast Concrete
Products”, the secretariat of which is held by AFNOR.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by June 2025, and conflicting national standards shall be
withdrawn at the latest by June 2025.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 1170-1:1997, EN 1170-2:1997, EN 1170-3:1997, EN 1170-4:1997,
EN 1170-5:1997, EN 1170-6:1997, EN 1170-7:1997 and EN 1170-8:2008.
EN 1170-2:1997, EN 1170-3:1997, EN 1170-4:1997, EN 1170-5:1997, EN 1170-6:1997, EN 1170-7:1997
and EN 1170-8:2008:
— removal of the tests described previously in parts 1 to 4, not referred to in EN 1169;
— modification of the dimensions of the mould for test boards;
— increase of the load speed for the flexural strength test;
— introduction of a sample volume determination by weighing in water;
— provisions to allow the cutting of test coupons directly from products.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia,
Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland,
Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North
Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the United
Kingdom.
1 Scope
This document specifies test methods for identifying the performance of a glassfibre reinforced concrete
(GRC) composition in terms of bending strength, water absorption, dry density and dimensional
variations.
These methods can be used for type testing or for the evaluation of the uniformity of the production
process. They can be used on GRC coupons prepared as described in this document, or on samples cut
out of GRC products.
NOTE A test to assess the influence of time on the mechanical properties (i.e. LOP and MOR) is described for
information in Annex C. Other methods can be found in scientific literature.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN ISO 7500-1, Metallic materials — Calibration and verification of static uniaxial testing machines — Part
1: Tension/compression testing machines — Calibration and verification of the force-measuring system (ISO
7500-1)
EN 15191, Precast concrete products — Classification of glassfibre reinforced concrete performance
3 Symbols and abbreviated terms
For the purposes of this document, the terms, definitions, symbols and abbreviated terms given in
EN 15191 and the following symbols apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp/
— IEC Electropedia: available at https://www.electropedia.org/
b width of test piece, in millimetres
d thickness of test piece, in millimetres
F load at limit of proportionality, in newtons
LOP
failure load, in Newtons
FMOR
l length of test piece, in millimetres
L span, in millimetres
L distance between washers measured at the beginning of the test, in micrometres
n,0
L distance between washers measured after 96 h immersion, in micrometres
n,1
L distance between washers measured after 21 days drying in oven and 6 h stabilization, in
n,2
micrometres
m mass of a test piece in air, in grammes
a
m mass of a test piece after drying, “dry mass”, in grammes
d
mst apparent mass of the immersed stirrup, in grammes
m apparent mass of the immersed test piece, in grammes
w
m mass of a test piece after immersion for “j” days, “wet mass”, in grammes
wj
m mass of test piece at the beginning of the test, in grammes
n,0
m mass of test piece after 96 h immersion, in grammes
n,1
m mass of test piece after 21 days oven drying and 6 h stabilization, in grammes
n,2
V volume of a test piece, in cm
Υ water absorption by immersion, in percentage by mass
Δ deflection at limit of proportionality, in millimetres
LOP
Δ deflection at failure, in millimetres
MOR
value of extreme dimensional variation, in millimetres per metre
∆l
c
l
value of expansion, in millimetres per metre; this is the arithmetic mean of the expansion
∆l
e
values of the three test pieces tested
l
value of residual shrinkage, in millimetres per metre; this is the arithmetic mean of the
∆l
s
shrinkage values of the three test pieces tested
l
ε strain at limit of proportionality
LOP
ε strain at failure
MOR
ρ dry density, in kg/m
d
ρ density of water, at 20 °C, taken as 998 kg/m
w
σ stress at limit of proportionality, in megapascals
LOP
σMOR stress at failure, in megapascals
4 Sampling and preparation of test pieces
4.1 Apparatus
Flat test board moulds with internal dimensions of not less than 500 mm × 500 mm with a (12 ± 0,5) mm
upstand around the edges from which a minimum of 4 test coupons, each 275 mm minimum × (50 ± 2)
mm can be cut; the test coupons shall be taken from the central area within a border approximately
50 mm from each edge.
4.2 Test coupons
Make sample boards using the moulds described in 4.1 for each spray team, if Sprayed GRC, or mixer, if
Premix GRC, per day or production shift, with no facing layer (solid GRC only) under the same conditions
as for the actual production they represent.
Where the direction of production can have an influence on the results, Annex A may apply.
Demould and store the sample boards under the same conditions as for the actual production they
represent.
Cut out by sawing in each panel, at a minimum distance of 50 mm from the edges, 4 test coupons from
the positions illustrated in Figure 1.
Mark the test coupons as shown in Figure 1.
Dimensions in mm
Key
TC1 to TC4 test coupons for bending strength
TC5 to TC8 test coupons for water absorption and dry density
TZ test zone
Figure 1 — Position and identification of test coupons
Dimensions of the test coupons:
— width: (50 ± 2) mm,
— length: minimum 275 mm.
The test board method is the reference method, but in some cases, it may be considered necessary to cut
coupons directly from products. In this case, Annex B applies.
Storage of the test boards/coupons:
The test coupons shall be stored/cured under the same conditions as the products which they represent.
5 Bending strength
5.1 General
This clause specifies a test method for identifying the stress and deformation performance, at the limit of
proportionality and on failure, of a GRC composition subjected to bending.
It is used for the evaluation of the uniformity of the production process. It can also be used to establish,
for a given composition of GRC, the relationship between the conventional strength at 28 days and the
strength at 7 days, or at other ages.
This method can be used on GRC coupons prepared as described in this document, or on samples cut out
of GRC products as described in Annex B.
5.2 Apparatus
The apparatus comprises:
— a bending test machine of accuracy meeting the class 1 requirements specified in EN ISO 7500-1;
it shall be fitted with a four-point bending device (minimum diameter of supports: 6 mm) which must
contain sufficient articulation to enable the load to be applied evenly across the test specimen at each
position of contact. The machine shall incorporate a displacement sensor (accurate to 0,01 mm) to
track the movement of the crosshead which applies the load. The test machine shall incorporate or
be connected to a computer with software suitable for plotting the load/displacement curve and
detecting the loads and displacements at the limit of proportionality (LOP) modulus of rupture
(MOR). The LOP and MOR stress and strain values may be calculated manually or by using the test
machine’s software if included;
— a flat-bottomed tank filled with water maintained at (20 ± 5) °C;
the size of the tank shall be sufficient to hold the test coupons from 1 day production; multiple tanks
may be used;
— a rule graduated in 0,5 mm increments;
— a calliper graduated in 0,1 mm increments.
5.3 Procedure
Test coupons may be “wet” or “dry” conditioned prior to testing provided that the conditioning process
is noted on the test report.
If the test coupons are to be wet conditioned (see note below) immerse them in water at (20 ± 5) °C for
24 h. Dry the surfaces with a towel prior to testing.
If the test coupons are not wet conditioned, they shall be stored in the same environment as the test
machine for a minimum of 24 h before testing.
NOTE It is normal to test GRC containing thermosetting pure acrylic ester co-polymer dispersions dry (i.e.
without wet conditioning for 24 h prior to testing).
Position the test coupons in the testing machine, as shown in Figure 2.
Key
F load
L span
b width
d thickness
l length
Figure 2 — Position of test coupons in the testing machine
For each test panel, the test coupons marked “1” and “3” are tested with the “mould” face down on the
two bottom supports and those marked “2” and “4” with the “mould” face in contact with the top supports.
To start the test, set the test speed to (5 ± 0,5) mm/min.
Continue the test until the test coupon fails and the load reduces to approximately 90 % of the maximum
load.
NOTE Most test machines can be programmed to stop at a pre-set limit. If not, operator intervention is
required.
Using a vernier calliper, measure the thickness of the test coupon at four points, two from each side of
the line of failure (see Figure 3), and the width of the test piece coupon as close as possible to failure zone
to the nearest 0,1 mm.
Record the results and calculate the average thickness at the line of failure.
Dimensions in millimetres
Key
1 support
2 line of load
3 thickness measurement zone
4 zone where the failure shall happen
b line of failure
L test span
Figure 3 — Measurement of the Test Coupon Width and Thickness
Failure
...
SIST EN 1170:2025は、ガラス繊維強化コンクリート（GRC）の性能を測定するための試験方法を詳細に規定しており、特に曲げ強度、水分吸収、乾燥密度、寸法変動に関する試験が含まれています。この標準文書の意義は、GRCの製品がどのようにその特性を示すかを評価できることにあります。 本標準の強みは、GRCの均一性を評価するためのタイプ試験や生産プロセスの検証に応じて適用可能な方法を提供している点にあります。そのため、業界の品質管理において非常に重要な役割を果たすことが見込まれます。さらに、この文書では、GRC製品から切り出されたサンプルに対しても試験を実施できるため、実際の製品に近い条件で評価が行える点も注目されるべきです。 また、附属書Cには、時間が機械的特性（たとえば、ロングテストと曲げ強度）に与える影響を評価するための試験方法が記載されており、さらなる研究や改良の方向性を示唆しています。これは、科学文献に記載された他の方法と併せて用いることで、GRCの特性に関する理解を深めることができるでしょう。 このように、SIST EN 1170:2025の内容は、ガラス繊維強化コンクリートの性能試験において、その範囲、強み、そして関連性をしっかりと持っていることが評価されます。特に、計測の一貫性と再現性が求められる現代の建設業界において、この標準は極めて重要な参考資料となるでしょう。
Le document intitulé EN 1170:2024 apporte une contribution significative à la standardisation des produits en béton préfabriqué, en se concentrant spécifiquement sur les méthodes d'essai pour le béton renforcé de fibres de verre (GRC). La portée de cette norme est clairement définie, en établissant des méthodes d'essai précises pour évaluer la performance des compositions de GRC en termes de résistance à la flexion, d'absorption d'eau, de densité sèche et de variations dimensionnelles. Ces critères sont essentiels pour garantir la qualité et la durabilité des produits en GRC. L'un des points forts de cette norme est sa capacité à être utilisée non seulement pour les essais de type, mais également pour l'évaluation de l'uniformité du processus de production. Cela permet aux fabricants de s'assurer que chaque lot de produits répond aux spécifications attendues, renforçant ainsi la confiance des consommateurs dans les produits en béton préfabriqué. De plus, la possibilité d'utiliser des coupons de GRC préparés conformément aux recommandations du document ou des échantillons découpés à partir de produits GRC existants offre une flexibilité précieuse pour les tests. Le document mentionne également un test annexe (Annex C) qui décrit l'influence du temps sur les propriétés mécaniques, bien qu'il soit fourni à titre d'information. Ce complément permet d'approfondir la compréhension des performances du GRC au fil du temps, un facteur crucial pour des applications à long terme. En somme, la norme SIST EN 1170:2025 est robuste et pertinente pour le secteur du béton préfabriqué, offrant des méthodes d'essai pratiques et efficaces pour le GRC. Sa contribution à l'évaluation des matériaux est indispensable pour maintenir des standards élevés dans la production de béton renforcé de fibres de verre.
표준 EN 1170:2024는 유리섬유 강화 콘크리트(GRC) 제품의 성능을 평가하기 위한 시험 방법을 규명하는 데 초점을 맞추고 있습니다. 이 표준은 굽힘 강도, 수분 흡수, 건조 밀도 및 치수 변동성과 같은 여러 특성을 측정하기 위한 절차를 제공합니다. 이 표준의 주요 강점은 GRC의 종류 시험 또는 생산 공정의 균일성을 평가하는 데 활용될 수 있다는 점입니다. 작성된 문서에 따라 준비된 GRC 샘플이나 GRC 제품에서 잘라낸 샘플에 적용 가능합니다. 이러한 다목적 시험 방법들은 GRC의 품질 보증을 강화할 수 있으며, 산업 전반에 걸쳐 일관된 성능 기준을 수립하는 데 기여합니다. 또한, 부록 C에서는 기계적 성질에 대한 시간의 영향을 평가하는 시험이 정보 제공 목적으로 설명되어 있습니다. 이와 같이, EN 1170:2024는 GRC 제품의 성능을 과학적으로 평가할 수 있는 기준을 제공하며, 관련된 다른 방법들은 과학 문헌에서 찾아볼 수 있습니다. 이 표준은 유리섬유 강화 콘크리트를 사용하는 다양한 산업 분야에서 그 중요성과 관련성이 높아지고 있는 만큼, GRC의 품질 및 신뢰성 있는 생산을 담보하는 데 필수적인 기준이 될 것입니다.
The EN 1170:2024 standard provides a comprehensive framework for the testing of glassfibre reinforced concrete (GRC) products, specifically focusing on critical performance metrics such as bending strength, water absorption, dry density, and dimensional variations. This standard is designed to ensure that GRC compositions are evaluated consistently, making it an essential tool for manufacturers and quality control professionals in the precast concrete industry. One of the key strengths of this standard is its dual applicability for type testing and uniformity evaluation during the production process. By specifying test methods for both GRC coupons and samples taken from finished products, EN 1170:2024 addresses the need for flexibility in testing practices. This is particularly relevant for manufacturers who may require different approaches depending on their quality assurance protocols or production methodologies. Moreover, the inclusion of detailed procedures for assessing mechanical properties through defined tests enhances the standard's relevance in contemporary material science. The reference to the impact of time on mechanical properties, particularly in Annex C, provides valuable insights for ongoing research and product development, allowing professionals to understand the long-term performance characteristics of GRC. The standard’s focus on water absorption and dimensional variations further solidifies its importance, as these factors are critical in ensuring durability and performance in various environmental conditions. By establishing standardized testing methods, EN 1170:2024 promotes product reliability and contributes to the overall advancement of glassfibre reinforced concrete technologies. In summary, EN 1170:2024 stands out as a vital resource for industry stakeholders, balancing rigorous testing with practical applicability. Its strengths in scope, including comprehensive test methods and relevant performance metrics, position it as a cornerstone document for anyone involved in the development or quality assurance of precast concrete products utilizing GRC.
Die Norm EN 1170:2024 bietet einen umfassenden Rahmen für die Testmethoden von faserverstärktem Beton (GRC). Ihr Fokus auf die Prüfung der Biegefestigkeit, Wasseraufnahme, Trocken-dichte und dimensionalen Veränderungen stellt sicher, dass die Leistung von GRC-Produktzusammensetzungen präzise bewertet werden kann. Dies ist besonders relevant, da die Herstellung von GRC-Produkten stetig zunimmt und die Anforderungen an Qualität und Beständigkeit steigen. Ein herausragendes Merkmal der Norm ist die Möglichkeit, die Testmethoden sowohl für Typprüfungen als auch für die Bewertung der Homogenität des Produktionsprozesses einzusetzen. Dies ermöglicht es, die Qualität von GRC sowohl in der Entwicklung als auch in der Serienproduktion systematisch zu überwachen. Die Norm beinhaltet zudem die Option, entweder vorbereitete GRC-Proben oder Ausschnitte aus bereits hergestellten GRC-Produkten zu testen, was die Flexibilität erhöht und die praktischen Aspekte der Qualitätskontrolle berücksichtigt. Ein weiterer wichtiger Aspekt dieser Norm ist das im Anhang C beschriebene Verfahren zur Bewertung des Einflusses der Zeit auf die mechanischen Eigenschaften des GRC. Während dieses Verfahren informativ ist, unterstreicht es die tiefgreifende Auseinandersetzung mit den langfristigen Eigenschaften des Materials, was für Hersteller und Anwender von höchster Relevanz ist. Insgesamt führt die Norm EN 1170:2024 die Testmethoden für glasfaserverstärkten Beton auf eine moderne und präzise Art weiter, was nicht nur die Qualitätssicherung verbessert, sondern auch die Innovationsfähigkeit der Branche fördert. Sie ist damit ein unverzichtbares Dokument für alle, die im Bereich der GRC-Produktion tätig sind und beschäftigt sich effizient mit den aktuellen Anforderungen und Herausforderungen des Marktes.
Die Norm EN 1170:2024 bietet eine umfassende Grundlage für die Prüfung von glasfaserverstärktem Beton (GRC) und legt spezifische Testmethoden fest, um die Leistung dieser innovativen Materialzusammensetzung zu identifizieren. Der Umfang der Norm umfasst eine Vielzahl von Prüfkriterien, darunter Biegefestigkeit, Wasseraufnahme, Trockenmasse und dimensionsale Veränderungen. Diese Tests sind entscheidend für die Beurteilung der Qualität und Konsistenz von GRC-Produkten, was für Hersteller und Verbraucher gleichermaßen von Bedeutung ist. Eine der Stärken dieser Norm ist die klare Definition von Prüfmethoden, die sowohl für Typprüfungen als auch zur Evaluierung der Gleichmäßigkeit des Produktionsprozesses eingesetzt werden können. Dadurch wird sichergestellt, dass die GRC-Proben – sei es in Form von Coupons oder direkt aus GRC-Produkten – zuverlässige und repräsentative Ergebnisse liefern. Dies trägt erheblich zur Sicherheit und Zuverlässigkeit von GRC-Anwendungen bei, da konsistente Eigenschaften in verschiedenen realen Anwendungen garantiert werden. Die Relevanz der EN 1170:2024 kann nicht genug betont werden, besonders im Kontext moderner Bauanforderungen, wo Glasfaserverstärkter Beton zunehmend an Bedeutung gewinnt. Die Norm bietet nicht nur eine Grundlage für Qualitätskontrollen in der Produktion, sondern auch für die kontinuierliche Weiterentwicklung von GRC-Technologien, da zusätzliche Informationen zur Beurteilung der zeitlichen Einflüsse auf die mechanischen Eigenschaften in Anhang C bereitgestellt werden. Durch die Festlegung standardisierter Testmethoden ermöglicht die Norm eine objektive Vergleichbarkeit von GRC-Produkten, fördert somit Innovationen im Materialbereich und stellt sicher, dass die allgemein hohen Qualitätsansprüche in der Bauindustrie erfüllt werden. Dies macht die EN 1170:2024 zu einem unverzichtbaren Werkzeug für Fachleute, die sich mit der Entwicklung und Anwendung von glasfaserverstärktem Beton beschäftigen.
The standard EN 1170:2024, titled "Precast concrete products - Test methods for glassfibre reinforced concrete," serves as a comprehensive guideline for assessing the performance of glassfibre reinforced concrete (GRC). This document specifically addresses critical test methods that evaluate essential properties of GRC compositions, including bending strength, water absorption, dry density, and dimensional variations. One of the key strengths of this standard lies in its systematic approach to testing. By providing standardized test methods, EN 1170:2024 ensures that GRC products are evaluated consistently, which is vital for maintaining quality across manufacturing processes. The dual applicability for type testing and evaluation of production uniformity enhances its relevance within the precast concrete industry, making it a crucial tool for producers aiming to meet performance benchmarks. Additionally, the inclusion of testing on GRC coupons as well as samples cut from GRC products reflects the standard's versatility and practicality. This flexibility allows manufacturers to select appropriate testing methods based on their specific production scenarios, further supporting the development of high-quality GRC. Furthermore, the standard includes informative content in Annex C regarding the assessment of time on mechanical properties (LOP and MOR), which provides additional context for users interested in the durability and long-term performance of GRC. This aspect highlights EN 1170:2024's commitment to comprehensive understanding, as it encourages further exploration in scientific literature for additional methods. Overall, EN 1170:2024 stands as an essential standard within the field of precast concrete products, addressing critical traits of glassfibre reinforced concrete through methodical testing approaches. Its strengths in versatility, comprehensive coverage, and focus on production consistency underscore its significance and relevance in ensuring the quality and reliability of GRC in various applications.
표준 EN 1170:2024는 유리섬유 보강 콘크리트(GRC)의 성능을 평가하기 위한 시험 방법을 구체적으로 규정하고 있습니다. 이 문서의 범위는 휨 강도, 물 흡수, 건조 밀도 및 치수 변화와 같은 중요한 물리적 특성을 통해 GRC 조성의 성능을 식별하는 데 필요한 시험 방법을 제공합니다. 이 표준은 유형 시험 또는 생산 공정의 일관성을 평가하는 데 활용될 수 있으며, GRC 제품에서 절단된 샘플이나 이 문서에 설명된 대로 준비된 GRC 쿠폰에 적용할 수 있습니다. EN 1170:2024의 강점은 그 명확한 시험 방법 제공에 있습니다. 이러한 시험 방법은 GRC 제품의 물리적 성질을 체계적이고 재현 가능한 방식으로 평가할 수 있어, 생산자와 소비자 모두에게 신뢰할 수 있는 정보를 제공합니다. 특히, 휨 강도와 같은 기계적 성질을 측정함으로써 GRC 제품의 내구성과 신뢰성을 보장하는 데 중요한 역할을 합니다. 또한, EN 1170:2024에서는 시간의 영향을 평가하기 위한 시험이 부록 C에서 정보로 제공됩니다. 이러한 포괄적인 접근법은 GRC 제품의 품질 관리를 위한 다양한 정보를 제공하며, 과학 문헌에서 찾을 수 있는 다른 방법들과 함께 활용될 수 있습니다. 이 문서는 유리섬유 보강 콘크리트의 성능 시험에 있어 필수적인 지침을 제공함으로써, 관련 산업에 실질적인 기여를 할 것으로 기대됩니다. EN 1170:2024의 채택은 GRC 제품의 품질 보증 및 표준화에 중요한 기반을 마련할 것입니다.
La norme SIST EN 1170:2025 se concentre sur les produits en béton préfabriqués, en définissant des méthodes d'essai pour le béton armé de fibres de verre (GRC). Cette norme est d'une grande importance dans l'industrie de la construction, car elle permet d'évaluer des aspects cruciaux tels que la résistance à la flexion, l'absorption d'eau, la densité sèche et les variations dimensionnelles du GRC. L'un des points forts de cette norme est son approche systématique pour tester la performance du GRC. Les méthodes décrites dans le document peuvent être appliquées tant pour des essais de type que pour l'évaluation de l'uniformité du processus de production. Cela assure non seulement la qualité des produits en béton préfabriqués mais également leur conformité avec les exigences du marché. En outre, la norme précise que les essais peuvent être réalisés sur des coupons de GRC standardisés ainsi que sur des échantillons découpés de produits finis, offrant ainsi la flexibilité nécessaire pour les différentes étapes de contrôle qualité. La possibilité d'utiliser des méthodes simplifiées pour des tests de routine est également un atout majeur qui favorise l'efficacité dans l'évaluation des produits. Enfin, l'ajout d'une annexe fournissant des informations sur l'influence du temps sur les propriétés mécaniques, bien que non contraignante, enrichit la compréhension des performances du GRC dans des conditions variables, renforçant ainsi la pertinence de cette norme dans le développement et l'innovation des produits en béton. En résumé, la norme SIST EN 1170:2025 se positionne comme un outil indispensable pour garantir que les produits en béton armé de fibres de verre répondent aux critères de performance exigés, ce qui en fait un document fondamental pour les entreprises et les professionnels du secteur.
標準化文書SIST EN 1170:2025は、ガラス繊維強化コンクリート（GRC）の性能を評価するための試験方法を明確に規定しています。この文書は、曲げ強度、水分吸収、乾燥密度および寸法変動に関する試験方法を特定し、GRC製品の品質管理やプロセスの均一性評価において重要な役割を果たします。 この標準の強みは、GRCの試験方法が具体的に示されている点です。特に、GRCクーポンや製品から切り出したサンプルに適用可能な試験方法が含まれているため、実務での適用が広範囲にわたることが期待できます。また、時間が機械的特性に与える影響を評価するための試験が附属書Cで説明されている点も、専門家にとって有用な情報を提供しています。 SIST EN 1170:2025は、ガラス繊維強化コンクリートの一貫した生産と性能評価を確保するために不可欠な標準であり、業界での関連性も高いものです。この標準が提供する精密な評価方法は、建築や工業分野でのGRCの信頼性を向上させるための基盤となるでしょう。
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.
Loading comments...