Lightweight aggregates

This document specifies the characteristics of lightweight aggregates (LWA) and LWA fillers and mixtures of them intended to be used in concrete, mortar and grout, bituminous mixtures, surface treatments and for unbound and hydraulically bound applications in construction works.
This document covers LWA and LWA fillers from mineral materials having particle densities less or equal to 2000 kg/m3 (2,000 Mg/m3) or loose bulk densities less or equal to 1200 kg/m3 (1,200 Mg/m3).
With regard to the aggregate size, this document covers LWA: fine lightweight aggregate (see 3.1.7), coarse lightweight aggregate (hereafter called coarse LWA) (see 3.1.8), all-in lightweight aggregate (hereafter called all-in LWA) (see 3.1.9) and LWA fillers (see 3.1.10).
With regard to the material source and production technique, this document covers LWA and LWA fillers:
a)   of natural origin (see 3.1.2),
b)   manufactured from natural materials (see 3.1.3),
c)   manufactured from by-products of industrial processes (see 3.1.4) or from recycled source materials (see 3.1.5), and
d)   as by-products of industrial processes (see 3.1.4).
Limits given to densities are related to some test methods which might not be applicable to some lightweight aggregates and lightweight aggregate fillers. This limitation is purely based on technical reasons and not to exclude any products from the market.
This document also specifies procedures for assessment and verification of constancy (AVCP) of performance of characteristics of LWA and LWA fillers.
This document does not cover LWA and LWA fillers of recycled aggregates from construction and demolition waste and Municipal Solid Waste Incinerator Bottom Ash (MIBA) (covered by prEN 17555-1:2021).

Leichte Gesteinskörnungen

Dieses Dokument legt die Eigenschaften von leichten Gesteinskörnungen (LWA, en: lightweight aggregates) und leichten Füllern sowie Mischungen davon fest, die für Beton, Mörtel und Einpressmörtel, bituminöse Gemische, Oberflächenbehandlungen sowie für ungebundene und hydraulisch gebundene Anwendungen in Bauwerken verwendet werden.
Dieses Dokument erfasst leichte Gesteinskörnungen und leichte Füller aus mineralischem Material mit einer Rohdichte von höchstens 2 000 kg/m3 (2,000 Mg/m3) oder einer Schüttdichte von höchstens 1 200 kg/m3 (1,200 Mg/m3).
Im Hinblick auf die Korngruppe erfasst dieses Dokument folgende leichte Gesteinskörnungen: feine leichte Gesteinskörnungen (siehe 3.1.7), grobe leichte Gesteinskörnungen (nachfolgend grobe LWA genannt) (siehe 3.1.8), kombinierte leichte Gesteinskörnungen (nachfolgend kombinierte LWA genannt) (siehe 3.1.9) und leichte Füller (siehe 3.1.10).
Im Hinblick auf den Ursprung des Materials und das Herstellungsverfahren erfasst dieses Dokument leichte Gesteinskörnungen und leichte Füller
a)   natürlichen Ursprungs (siehe 3.1.2);
b)   hergestellt aus natürlichem Material (siehe 3.1.3);
c)   hergestellt aus Nebenprodukten aus industriellen Prozessen (siehe 3.1.4) oder aus Recycling Ausgangsmaterialien (siehe 3.1.5); und
d)   als Nebenprodukte aus industriellen Prozessen (siehe 3.1.4).
Die Grenzwerte der Dichten stehen in Zusammenhang mit einigen Prüfverfahren, die auf einige leichte Gesteinskörnungen und leichte Füller nicht anwendbar sein könnten. Diese Begrenzung ist rein technisch bedingt und beabsichtigt nicht, Produkte vom Markt auszuschließen.
Dieses Dokument legt darüber hinaus Verfahren zur Bewertung und Überprüfung der Leistungsbeständigkeit (AVCP) der Eigenschaften leichter Gesteinskörnungen und leichter Füller fest.
Dieses Dokument erfasst keine leichten Gesteinskörnungen und leichten Füller aus rezyklierten Gesteinskörnungen aus Bau  und Rückbauabfällen sowie aus Hausmüllverbrennungsasche (HMV Asche) (erfasst von prEN 17555-1:2021).

Granulats légers

Le présent document spécifie les caractéristiques relatives aux granulats légers (GL), aux fillers légers et aux mélanges de ces produits pour les applications béton, mortier, coulis, mélanges hydrocarbonés et traitements de surface et pour les matériaux traités et non traités aux liants hydrauliques pour les travaux de construction
Ce document couvre les granulats légers et les fillers légers élaborés à partir de matériaux minéraux dont les particules solides présentent une masse volumique réelle n’excédant pas 2000 kg/m3 (2,00 Mg/m3) ou une masse volumique en vrac n’excédant pas 1200 kg/m3 (1,20 Mg/m3).
En ce qui concerne la classe granulaire, ce document couvre les granulats légers suivants : les sables légers fins (voir 3.1.7), les gravillons légers (voir 3.1.8), les graves légères (voir 3.1.9) et les fillers légers (voir 3.1.10).
En ce qui concerne la matière première et la technique de production, le présent document couvre les granulats légers et fillers légers :
a)   d’origine naturelle (voir 3.1.2),
b)   artificiels issus de matériaux naturels (voir 3.1.3),
c)   artificiels issus de résidus de processus industriels (voir 3.1.4) ou de matériaux recyclés (voir 3.1.5), et
d)   comme résidus de processus industriels (voir 3.1.4).
Les limites indiquées pour les masses volumiques sont liées à certaines méthodes d’essai qui ne sont pas nécessairement applicables à certains granulats légers et à certains fillers légers. Cette limitation est purement basée sur des raisons techniques et ne vise pas à exclure des produits du marché.
Le présent document spécifie également les procédures d’Évaluation et de vérification de la constance des performances (EVCP) des caractéristiques des granulats légers et des fillers légers.
Ce document ne couvre pas les granulats légers et fillers légers fabriqués à partir de granulats recyclés issus des débris de construction, de démolition et des Mâchefers d’incinération des déchets non dangereux (MIDND) (couverts par la prEN 17555-1:2021).

Lahki agregati

General Information

Status
Not Published
Public Enquiry End Date
01-Sep-2021
Technical Committee
Current Stage
4020 - Public enquire (PE) (Adopted Project)
Start Date
10-Jun-2021
Due Date
28-Oct-2021
Completion Date
24-Aug-2021

Relations

Effective Date
24-Jun-2020
Effective Date
18-Jan-2023
Effective Date
19-Jan-2023

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Standards Content (Sample)

SLOVENSKI STANDARD
oSIST prEN 13055:2021
01-september-2021
Lahki agregati
Lightweight aggregates
Leichte Gesteinskörnungen
Granulats légers
Ta slovenski standard je istoveten z: prEN 13055
ICS:
91.100.15 Mineralni materiali in izdelki Mineral materials and
products
oSIST prEN 13055:2021 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 13055:2021

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oSIST prEN 13055:2021


DRAFT
EUROPEAN STANDARD
prEN 13055
NORME EUROPÉENNE

EUROPÄISCHE NORM

June 2021
ICS 91.100.15 Will supersede EN 13055:2016
English Version

Lightweight aggregates
Granulats légers Leichte Gesteinskörnungen
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 154.

If this draft becomes a European Standard, 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.

This draft European Standard was established by CEN 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, Turkey and
United Kingdom.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.


EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATIO N

EUROPÄISCHES KOMITEE FÜR NORMUN G

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 13055:2021 E
worldwide for CEN national Members.

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oSIST prEN 13055:2021
prEN 13055:2021 (E)
Contents Page
European foreword . 5
1 Scope . 7
2 Normative references . 7
3 Terms, definitions, symbols and abbreviations . 9
3.1 Terms and definitions . 9
3.2 Symbols and abbreviations . 10
4 Characteristics . 11
4.1 Fineness, particle shape, size and density . 11
4.1.1 Loose bulk density . 11
4.1.2 Particle density of LWA . 11
4.1.3 Particle density of LWA fillers . 11
4.1.4 Aggregate size . 11
4.1.5 Grading . 11
4.1.6 Particle shape . 11
4.2 Cleanliness . 12
4.3 Water absorption and suction . 12
4.3.1 Water absorption of LWA . 12
4.3.2 Water content of LWA . 12
4.3.3 Water suction height of coarse LWA . 12
4.4 Resistance to fragmentation and crushing . 12
4.4.1 Bulk crushing resistance of coarse LWA . 12
4.4.2 Resistance to fragmentation of coarse LWA . 12
4.4.3 Compressibility and confined compressive strength of LWA . 12
4.4.4 Cyclic load shear strength of LWA . 12
4.5 Volume stability of coarse LWA . 12
4.6 Resistance to polishing, abrasion and wear . 12
4.6.1 Resistance to polishing . 12
4.6.2 Resistance to wear by abrasion from studded tyres . 13
4.6.3 Resistance to wear . 13
4.7 Resistance to thermal shock . 13
4.8 Stiffening properties . 13
4.9 Porosity and volume of voids . 13
4.10 Affinity to bituminous binders . 13
4.11 Water solubility . 13
4.12 Composition and content . 13
4.12.1 Content of chloride . 13
4.12.2 Content of acid-soluble sulphate . 13
4.12.3 Total sulphur content . 13
4.13 Loss on ignition . 14
4.14 Durability against freeze and thaw of coarse LWA . 14
5 Testing, assessment and sampling methods . 14
5.1 Sampling and sample reduction . 14
5.2 Quantity of test specimens . 14
5.3 Loose bulk density . 14
2

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oSIST prEN 13055:2021
prEN 13055:2021 (E)
5.4 Particle density of LWA . 14
5.5 Particle density of LWA fillers . 14
5.6 Aggregate size . 14
5.7 Grading of LWA . 14
5.8 Grading of LWA fillers . 14
5.9 Particle shape . 15
5.10 Cleanliness . 15
5.11 Water absorption of LWA . 15
5.12 Water content of LWA . 15
5.13 Water suction height of coarse LWA . 15
5.14 Bulk crushing resistance of coarse LWA . 15
5.15 Resistance to fragmentation of coarse LWA . 15
5.16 Compressibility and confined compressive strength of LWA . 15
5.17 Cyclic load shear strength of LWA . 15
5.18 Resistance to disintegration of coarse LWA . 15
5.19 Resistance to polishing . 15
5.20 Resistance to wear by abrasion from studded tyres . 15
5.21 Resistance to wear . 16
5.22 Resistance to thermal shock . 16
5.23 Stiffening properties . 16
5.24 Porosity and volume of voids . 16
5.25 Affinity to bituminous binders. 16
5.26 Water solubility . 16
5.27 Content of chloride . 16
5.28 Content of acid-soluble sulphate . 16
5.29 Total sulphur content . 16
5.30 Loss on ignition . 16
5.31 Durability against freeze and thaw of coarse LWA . 16
6 Assessment and verification of constancy of performance - AVCP . 17
6.1 General . 17
6.2 Assessment of performance . 17
6.2.1 General . 17
6.2.2 Test samples, testing and assessment criteria . 18
6.3 Verification of constancy of performance . 19
6.3.1 Factory production control (FPC) . 19
6.3.2 Initial inspection of factory and of FPC . 23
6.3.3 Continuous surveillance of FPC . 23
7 Product designation. 23
7.1 Lightweight aggregates codes, sources and products . 23
7.2 Designation . 25
8 Marking, labelling and packaging . 25
Annex A (normative) Standards covering other applications of LWA . 26
Annex B (normative) Determination of bulk crushing resistance . 27
B.1 Principle . 27
B.2 Apparatus . 27
B.3 Preparation of test specimens . 28
B.4 Procedure . 28
B.4.1 Procedure 1. 28
3

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oSIST prEN 13055:2021
prEN 13055:2021 (E)
B.4.2 Procedure 2 . 28
B.4.3 Procedure 3 . 28
B.5 Calculation and expression of results . 29
B.6 Test report . 29
Annex C (normative) Mass conversion . 33
C.1 Background . 33
C.2 Calculation . 33
Annex ZA (informative) Relationship of this European Standard with Regulation (EU)
No 305/2011 . 34
ZA.1 Scope and relevant characteristics . 34
ZA.2 System of Assessment and Verification of Constancy of Performance (AVCP) . 41
ZA.3 Assignment of AVCP tasks . 41
Bibliography . 44

4

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oSIST prEN 13055:2021
prEN 13055:2021 (E)
European foreword
This document prEN 13055 has been prepared by Technical Committee CEN/TC 154 “Aggregates”, the
secretariat of which is held by BSI.
This document is currently submitted to the CEN Enquiry.
This document will supersede the withdrawn harmonized standards:
EN 13055-1:2002, Lightweight aggregates — Part 1: Lightweight aggregates for concrete, mortar and
grout;
EN 13055-2:2004, Lightweight aggregates — Part 2: Lightweight aggregates for bituminous mixtures and
surface treatments and for unbound and bound applications.
This document will also supersede the non-harmonized standard:
— EN 13055:2016, Lightweight aggregates.
For information, EN 13055:2016 was published, but this version has failed to be cited in the OJEU.
This document has been prepared under a standardization request given to CEN by the European
Commission and the European Free Trade Association, and supports essential requirements of EU
Regulation(s).
For relationship with Regulation (EU) No 305/2011 on construction products (CPR), see informative
Annex ZA, which is an integral part of this document.
In comparison with the previous editions (2002, 2004 and 2016), the following technical modifications
have been made:
a) Merging of the former two parts, changing the title and clarifying the scope of the standard;
b) Reorganization, alignment and revision of terminology and text according to the Construction
Product Regulation, templates for harmonized standards, AVCP clauses and Annex ZA and in line
with the CEN/TC 154 approach for all aggregate product standards;
c) All normative references are made dated references;
d) Common terms and definitions are in accordance with prEN 17555-1:2021 Aggregates for
construction works — Part 1: Characteristics;
e) Previous Table 1 with sieve sized for specifying aggregate size replaced by a normative reference to
EN 933-2:2020;
f) Percentage of crushed particles is deleted as a characteristic and shall no longer be determined. (This
is in accordance with the revised answer to the mandate);
g) Deleting the clauses related to thermal conductivity;
h) Essential characteristics without a European test method have no longer been considered;
i) Replacement of 3 former test method annexes with normative references to separate EN test method
standards;
5

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oSIST prEN 13055:2021
prEN 13055:2021 (E)
j) Information from the previous annex on test frequencies for factory production control are now
included in new Clause 6 on AVCP;
k) The previous annex on source material is deleted, see Bibliography;
l) The previous annex on chemical constituents and organic components is deleted. Text on chlorides
(because it is a concrete matter), alkali aggregate reaction and sulphates is deleted.
m) Referring certain LWA for specific applications to other aggregate standards in a normative Annex A
Standards covering other applications of LWA;
n) Annex B Determination of bulk crushing resistance includes a new procedure 3 for factory production
control of material up to 63 mm;
o) New normative Annex C on mass conversion;
p) Deleting previous annex on Determination of water absorption for fine LWA as a result of the ongoing
revision of prEN 1097-6:2020;
Characteristics for other aggregates are specified in the following European Standards:
— prEN 13383-1:2021, Armourstone — Part 1: Characteristics;
— prEN 13450-1:2021, Aggregates for railway ballast — Part 1: Characteristics;
— prEN 17555-1:2021, Aggregates for construction works — Part 1: Characteristics.
Some LWA for specific applications are covered in separate European product Standards, see normative
Annex A.
6

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oSIST prEN 13055:2021
prEN 13055:2021 (E)
1 Scope
This document specifies the characteristics of lightweight aggregates (LWA) and LWA fillers and mixtures
of them intended to be used in concrete, mortar and grout, bituminous mixtures, surface treatments and
for unbound and hydraulically bound applications in construction works.
This document covers LWA and LWA fillers from mineral materials having particle densities less or equal
3 3 3 3
to 2000 kg/m (2,000 Mg/m ) or loose bulk densities less or equal to 1200 kg/m (1,200 Mg/m ).
With regard to the aggregate size, this document covers LWA: fine lightweight aggregate (see 3.1.7),
coarse lightweight aggregate (hereafter called coarse LWA) (see 3.1.8), all-in lightweight aggregate
(hereafter called all-in LWA) (see 3.1.9) and LWA fillers (see 3.1.10).
With regard to the material source and production technique, this document covers LWA and LWA fillers:
a) of natural origin (see 3.1.2),
b) manufactured from natural materials (see 3.1.3),
c) manufactured from by-products of industrial processes (see 3.1.4) or from recycled source materials
(see 3.1.5), and
d) as by-products of industrial processes (see 3.1.4).
Limits given to densities are related to some test methods which might not be applicable to some
lightweight aggregates and lightweight aggregate fillers. This limitation is purely based on technical
reasons and not to exclude any products from the market.
This document also specifies procedures for assessment and verification of constancy (AVCP) of
performance of characteristics of LWA and LWA fillers.
This document does not cover LWA and LWA fillers of recycled aggregates from construction and
demolition waste and Municipal Solid Waste Incinerator Bottom Ash (MIBA) (covered by
prEN 17555-1:2021).
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 932-1:1996, Tests for general properties of aggregates — Part 1: Methods for sampling
EN 932-2:1999, Tests for general properties of aggregates — Part 2: Methods for reducing laboratory
samples
1
EN 932-5:2012 , Tests for general properties of aggregates — Part 5: Common equipment and calibration
EN 933-1:2012, Tests for geometrical properties of aggregates — Part 1: Determination of particle size
distribution — Sieving method
EN 933-2:2020, Tests for geometrical properties of aggregates — Part 2: Determination of particle size
distribution — Test sieves, nominal size of apertures

1
As impacted by corrigendum EN 932-5:2012/AC:2014.
7

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oSIST prEN 13055:2021
prEN 13055:2021 (E)
EN 933-10:2009, Tests for geometrical properties of aggregates — Part 10: Assessment of fines — Grading
of filler aggregates (air jet sieving)
EN 1097-1:2011, Tests for mechanical and physical properties of aggregates — Part 1: Determination of
the resistance to wear (micro-Deval)
EN 1097-2:2020, Tests for mechanical and physical properties of aggregates — Part 2: Methods for the
determination of resistance to fragmentation
EN 1097-3:1998, Tests for mechanical and physical properties of aggregates — Part 3: Determination of
loose bulk density and voids
EN 1097-4:2008, Tests for mechanical and physical properties of aggregates — Part 4: Determination of
the voids of dry compacted filler
EN 1097-5:2008, Tests for mechanical and physical properties of aggregates — Part 5: Determination of
the water content by drying in a ventilated oven
prEN 1097-6:2020, Tests for mechanical and physical properties of aggregates — Part 6: Determination of
particle density and water absorption
prEN 1097-7:2020, Tests for mechanical and physical properties of aggregates — Part 7: Determination of
the particle density of filler — Pyknometer method
EN 1097-8:2020, Tests for mechanical and physical properties of aggregates — Part 8: Determination of
the polished stone value
EN 1097-9:2014, Tests for mechanical and physical properties of aggregates — Part 9: Determination of
the resistance to wear by abrasion from studded tyres — Nordic test
EN 1097-10:2014, Tests for mechanical and physical properties of aggregates — Part 10: Determination of
water suction height
EN 1097-11:2013, Tests for mechanical and physical properties of aggregates — Part 11: Determination of
compressibility and confined compressive strength of lightweight aggregates
EN 1367-5:2011, Tests for thermal and weathering properties of aggregates — Part 5: Determination of
resistance to thermal shock
EN 1367-7:2014, Tests for thermal and weathering properties of aggregates — Part 7: Determination of
resistance to freezing and thawing of Lightweight aggregates
EN 1367-8:2014, Tests for thermal and weathering properties of aggregates — Part 8: Determination of
resistance to disintegration of Lightweight Aggregates
EN 1744-1:2009+A1:2012, Tests for chemical properties of aggregates — Part 1: Chemical analysis
EN 12697-11:2020, Bituminous mixtures — Test methods — Part 11: Determination of the affinity between
aggregate and bitumen
EN 13179-1:2013, Tests for filler aggregate used in bituminous mixtures — Part 1: Delta ring and ball test
EN 13286-7:2004, Unbound and hydraulically bound mixtures — Part 7: Cyclic load triaxial test for
unbound mixtures
8

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oSIST prEN 13055:2021
prEN 13055:2021 (E)
3 Terms, definitions, symbols and abbreviations
3.1 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1.1
lightweight aggregate
3
granular material of mineral origin having a particle density less or equal to (≤) 2000 kg/m (2,000
3 3 3
Mg/m ) or a loose bulk density less or equal to (≤) 1200 kg/m (1,200 Mg/m )
3.1.2
natural lightweight aggregate
aggregate from mineral sources which has been subjected to nothing more than mechanical processing
and sometimes washing
[SOURCE: prEN 17555-1:2021, 3.1.2]
3.1.3
manufactured lightweight aggregate
aggregate of mineral origin resulting from an industrial process involving thermal or other modification
[SOURCE: prEN 17555-1:2021, 3.1.3, modified — Note to entry has been deleted.]
3.1.4
by-product lightweight aggregate
aggregate of mineral origin from an industrial process which subsequently has been subjected to nothing
more than mechanical processing
3.1.5
recycled source material
raw material of inorganic or mineral origin from waste sources for use in manufactured LWA
3.1.6
recycled aggregate
aggregate resulting from processing of inorganic or mineral material previously used in construction
3.1.7
fine lightweigh
...

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