Products and systems for the protection and repair of concrete structures - Test methods - Reference concretes for testing

This European Standard specifies the composition, characteristics and preparation procedure for reference concrete substrates which are to be used in the test methods to measure performance requirements of products and systems for the repair and protection of concrete structures.
The provisions of this standard are applicable to concrete with a maximum aggregate size of 16 mm or 20 mm or with a maximum aggregate size of 8 mm or 10 mm.

Produkte und Systeme für den Schutz und die Instandsetzung von Betontragwerken - Prüfverfahren - Referenzbetone für Prüfungen

Diese Europäische Norm legt die Zusammensetzung, die Eigenschaften und die Vorbereitung der Referenz-Betongrundkörper fest, die bei Prüfverfahren zur Bestimmung der Leistung von Produkten und Systemen für den Schutz und die Instandsetzung von Betontragwerken verwendet werden. Die Festlegungen dieser Norm gelten für Beton mit einer Höchstkorngröße der Gesteinskörnung von 16 mm oder 20 mm und für Beton mit einer Höchstkorngröße der Gesteinskörnung von 8 mm oder 10 mm.

Produits et systèmes pour la protection et la réparation des structures en béton - Méthodes d'essais - Bétons de référence pour essais

Proizvodi in sistemi za zaščito in popravilo betonskih konstrukcij - Preskusne metode - Referenčni betoni za preskušanje

Ta evropski standard določa sestavo, lastnosti in postopek priprave referenčnih betonskih podlag, namenjenih za uporabo v preskusnih metodah za merjenje učinkovitosti proizvodov ter sistemov za popravilo in zaščito betonskih konstrukcij. Določbe tega standarda se uporabljajo za beton z največjo velikostjo agregata 16/20 mm ali 8/10 mm.

General Information

Status
Published
Public Enquiry End Date
29-Sep-2015
Publication Date
13-Mar-2017
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
21-Feb-2017
Due Date
28-Apr-2017
Completion Date
14-Mar-2017

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SLOVENSKI STANDARD
SIST EN 1766:2017
01-april-2017
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SIST EN 1766:2002
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Products and systems for the protection and repair of concrete structures - Test methods

- Reference concretes for testing
Produkte und Systeme für den Schutz und die Instandsetzung von Betontragwerken -
Prüfverfahren - Referenzbetone für Prüfungen

Produits et systèmes pour la protection et la réparation des structures en béton -

Méthodes d'essais - Bétons de référence pour essais
Ta slovenski standard je istoveten z: EN 1766:2017
ICS:
91.080.40 Betonske konstrukcije Concrete structures
91.100.30 Beton in betonski izdelki Concrete and concrete
products
SIST EN 1766:2017 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 1766:2017
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SIST EN 1766:2017
EN 1766
EUROPEAN STANDARD
NORME EUROPÉENNE
February 2017
EUROPÄISCHE NORM
ICS 91.080.40 Supersedes EN 1766:2000
English Version
Products and systems for the protection and repair of
concrete structures - Test methods - Reference concretes
for testing

Produits et systèmes pour la protection et la réparation Produkte und Systeme für den Schutz und die

des structures en béton - Méthodes d'essais - Bétons de Instandsetzung von Betontragwerken - Prüfverfahren -

référence pour essais Referenzbetone für Prüfungen
This European Standard was approved by CEN on 4 December 2016.

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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,

Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels

© 2017 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 1766:2017 E

worldwide for CEN national Members.
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SIST EN 1766:2017
EN 1766:2017 (E)
Contents Page

European foreword ....................................................................................................................................................... 3

1 Scope .................................................................................................................................................................... 4

2 Normative references .................................................................................................................................... 4

3 Principle ............................................................................................................................................................. 4

4 Equipment ......................................................................................................................................................... 4

4.1 Concrete mixer (forced action pan mixer) ............................................................................................. 4

4.2 Moulds ................................................................................................................................................................. 4

4.3 High frequency vibrating table .................................................................................................................. 4

4.4 Grit blasting equipment ................................................................................................................................ 5

4.5 Surface roughness measuring equipment ............................................................................................. 5

5 Materials ............................................................................................................................................................. 5

5.1 Aggregates ......................................................................................................................................................... 5

5.2 Mixing water ..................................................................................................................................................... 6

5.3 Cement ................................................................................................................................................................ 6

5.4 Admixtures ........................................................................................................................................................ 6

5.5 Grit for surface preparation by blasting ................................................................................................. 6

5.6 Silica sand for measuring roughness ....................................................................................................... 6

6 Reference concrete mixes ............................................................................................................................ 6

6.1 General ................................................................................................................................................................ 6

6.2 Reference concrete with 16 mm or 20 mm aggregate ....................................................................... 6

6.2.1 Compositions and properties (see Table 1) .......................................................................................... 6

6.3 Reference concrete with 8 mm or 10 mm aggregate .......................................................................... 7

6.3.1 Compositions and properties (see Table 1) .......................................................................................... 7

6.4 Specimen preparation ................................................................................................................................ 10

6.5 Concrete curing and storage .................................................................................................................... 10

7 Surface preparation and roughness index determination ............................................................ 10

7.1 Surface preparation .................................................................................................................................... 10

7.2 Measurement of the Roughness index .................................................................................................. 10

8 Report ............................................................................................................................................................... 12

Annex A (informative) Grading curves .............................................................................................................. 13

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SIST EN 1766:2017
EN 1766:2017 (E)
European foreword

This document (EN 1766:2017) has been prepared by Technical Committee CEN/TC 104 “Concrete and

related products”, the secretariat of which is held by DIN.

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 August 2017, and conflicting national standards shall

be withdrawn at the latest by November 2018.

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 1766:2000.

The main technical changes that have been made in this new edition are as follows:

a) Definition of 3 new reference MC concretes;

b) Definition of thresholds for the tensile bond strength for reference concretes C(0,40); C(0,45);

C(O,70) and new MC concretes.

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, Former Yugoslav Republic of Macedonia,

France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,

Netherlands, Norway, Poland, Portugal, Serbia, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and the United Kingdom.
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SIST EN 1766:2017
EN 1766:2017 (E)
1 Scope

This European Standard specifies the composition, characteristics and preparation procedure for

reference concrete substrates, which are to be used in the test methods to measure performances of

products and systems for the repair and protection of concrete structures.

The provisions of this Standard are applicable to concrete with a maximum aggregate size of 16 mm or

20 mm or with a maximum aggregate size of 8 mm or 10 mm.
2 Normative references

The following documents, in whole or in part, are normatively referenced in this document and are

indispensable for its application. For dated references, only the edition cited applies. For undated

references, the latest edition of the referenced document (including any amendments) applies.

EN 197-1, Cement - Part 1: Composition, specifications and conformity criteria for common cements

EN 206, Concrete — Specification, performance, production and conformity

EN 933-2, Tests for geometrical properties of aggregates - Part 2: Determination of particle size

distribution - Test sieves, nominal size of apertures

EN 934-2, Admixtures for concrete, mortar and grout — Part 2: Concrete admixtures — Definitions,

requirements, conformity, marking and labelling

EN 1008, Mixing water for concrete - Specification for sampling, testing and assessing the suitability of

water, including water recovered from processes in the concrete industry, as mixing water for concrete

EN 1542, Products and systems for the protection and repair of concrete structures - Test methods -

Measurement of bond strength by pull-off

EN 12390-3, Testing hardened concrete - Part 3: Compressive strength of test specimens

EN 12620, Aggregates for concrete
3 Principle

Reference concrete test specimens with reproducible surface texture and appropriate strength are cast

to enable the resistance against physical or chemical exposure of repair materials to be evaluated.

The required surface roughness is obtained by grit blasting the surface of the hardened concrete.

4 Equipment
4.1 Concrete mixer (forced action pan mixer)
4.2 Moulds

Moulds for producing concrete specimens, of non-absorbent, rigid material, not attacked by cement

paste, of a size 300 mm × 300 mm × 100 mm or other sizes specified in individual test method

standards, corresponding to the property to be tested, shall be used.
4.3 High frequency vibrating table
Or vibration rod suitable for compaction of the concrete in the moulds.
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SIST EN 1766:2017
EN 1766:2017 (E)
4.4 Grit blasting equipment
It shall comply with the following:
a) air pressure approximately 0,5 MPa;
b) nozzle diameter 8 mm to 12 mm;

c) the spread angle of the nozzle shall be sufficient to prevent the jet from cutting deeply into the

concrete surface. This shall be demonstrated by preliminary test.

NOTE As alternative, high pressure water-blasting equipment, capable of operating with or without the

addition of grit, can be used subject to preliminary tests to confirm that the required surface texture can be

achieved.
4.5 Surface roughness measuring equipment

a) Measuring cylinder, of (25 ± 1) ml total capacity and 20 mm maximum internal diameter;

b) disc, comprising a flat wooden disc (65 ± 5) mm in diameter with a hard rubber disc of the same

diameter (1,5 ± 0,5) mm thick stuck to one face, the reverse face being provided with a handle (see

Figure 1).
Dimensions in millimetre
Key
1 wooden disk
2 handle
3 rubber disk
Figure 1 — Disk for surface roughness measurement
5 Materials
5.1 Aggregates

Aggregates according to EN 12620 shall be natural and silica-based with low water absorption (less

than 2 % by mass). The aggregate grading, measured according to EN 933-2, shall conform to th

...

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