prEN 13055

SLOVENSKI STANDARD
01-junij-2012
Lahki agregati za beton, malto, injekcijsko malto, bitumenske zmesi, površinske
prevleke ter za uporabo v nevezanih in vezanih mešanicah
Lightweight aggregates for concrete, mortar, grout, bituminous mixtures, surface
treatments and for unbound and bound applications
Leichte Gesteinskörnungen für Beton, Mörtel, Einpressmörtel, bitumengebundene
Mischungen, Oberflächenbehandlungen und für ungebundene und gebundene
Anwendungen
Granulats légers pour bétons, mortiers, mélanges hydrocarbonés, enduits superficiels et
pour utilisation en couches traitées et non traitées
Ta slovenski standard je istoveten z: prEN 13055
ICS:
91.100.15 Mineralni materiali in izdelki Mineral materials and
products
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
DRAFT
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2012
ICS 91.100.15 Will supersede EN 13055-1:2002, EN 13055-2:2004
English Version
Lightweight aggregates for concrete, mortar, grout, bituminous
mixtures, surface treatments and for unbound and bound
applications
Granulats légers pour bétons, mortiers, mélanges Leichte Gesteinskörnungen für Beton, Mörtel,
hydrocarbonés, enduits superficiels et pour utilisation en Einpressmörtel, bitumengebundene Mischungen,
couches traitées et non traitées Oberflächenbehandlungen und für ungebundene und
gebundene Anwendungen
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, Romania, 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 NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2012 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 13055:2012: E
worldwide for CEN national Members.

Contents Page
Foreword .3
1 Scope .4
2 Normative references .4
3 Terms and definitions .6
4 Symbols and abbreviations .7
5 Requirements .7
6 Testing . 13
7 Evaluation of conformity . 14
8 Designation, supply marking and labelling . 14
Annex A (normative) Source materials considered in the development of EN 13055 and their
status in respect of the scope of the standard. . 16
Annex B (normative) Standards covering other applications of lightweight aggregates . 18
Annex C (normative) Determination of bulk crushing resistance . 19
Annex D (informative) Guidance on how to convert quantities by mass to quantities by volume . 23
Annex E (informative) Guidance on the effects of some chemical constituents of lightweight
aggregates on the durability of concrete, mortar and grout in which they are incorporated . 24
Annex F (informative) Factory production control . 26
Annex ZA (informative) Clauses of this European Standard addressing the provisions of the EU
Construction Products Directive . 32

Foreword
This document (prEN 13055:2012) 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 EN 13055-1:2002, EN 13055-2:2004.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association, and supports essential requirements of EU Directive(s).
For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document.
Annexes A, B and C are normative. Annexes D, E and F are informative.
Requirements for other aggregates will be specified in the following European Standards:
EN 12620, Aggregates for concrete,
EN 13043, Aggregates for bituminous mixtures and surface treatments for roads, airfields and other trafficked
areas,
EN 13139, Aggregates for mortar,
EN 13242, Aggregates for unbound and hydraulically bound materials for use in civil engineering work and road
construction,
EN 13383-1, Armourstone - Part 1: Specification,
EN 13383-2, Armourstones - Part 2: Test methods,
EN 13450, Aggregates for railway ballast.

1 Scope
This European Standard specifies the properties of lightweight aggregates and fillers derived thereof obtained
by processing natural or manufactured materials and mixtures of these aggregates for concrete, mortar and
grout, bituminous mixtures and surface treatments and for unbound and hydraulically bound applications for
construction works.
This European Standard covers lightweight aggregates of mineral origin having particle densities not
3 3 3 3
exceeding 2000 kg/m (2,000 Mg/m ) or loose bulk densities not exceeding 1200 kg/m (1,200 Mg/m )
including:
a) natural lightweight aggregates;
b) lightweight aggregates manufactured from natural materials;
c) lightweight aggregates manufactured from by-products of industrial processes or from recycled materials;
d) lightweight aggregates as by-products of industrial processes.
A list of the source materials that have been considered and are within the scope of this standard is given in
Annex A (normative).
NOTE 1 Recycled aggregates from construction and demolition waste and Municipal Solid Waste Incinerator Bottom
Ash (MIBA) are covered by standards EN 12620, EN 13043, EN 13139 and EN 13242.
Some lightweight aggregates for specific applications are covered in separate European product standards
(Annex B, normative).
This standard incorporates a general requirement that aggregates shall not release any dangerous
substances in excess of the maximum permitted levels specified in a relevant European Standard for the
material or permitted in the national regulations of the member state of destination.

NOTE 2 Requirements for the declaration of the potential of aggregates to release regulated dangerous substances
are currently under development. Until such time as these are finalised attention should be paid to requirements at the
place of use.
This standard also specifies that a quality control system is in place for use in factory production control and it
provides for the evaluation of conformity of the products to this European Standard.

The requirements specified in this standard may not be equally relevant to all types of lightweight aggregates.
For particular applications the requirements and tolerances can be adapted for the end use.

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.
prEN 1367-x, Tests for thermal and weathering properties of aggregates – Part X: Determination of resistance
to freezing and thawing of lightweight aggregates.

prEN 1097-y, Tests for mechanical and physical properties of aggregates – Part Y: Determination of
compressibility and confined compressive strength of lightweight aggregates.
prEN 1367-z, Tests for thermal and weathering properties of aggregates – Part Z : Determination of resistance
to disintegration of lightweight aggregates.
EN 932-1, Tests for general properties of aggregates — Part 1: Methods for sampling.
EN 932-2, Tests for general properties of aggregates — Part 2: Methods for reducing laboratory samples.
EN 932-5, Tests for general properties of aggregates — Part 5: Common equipment and calibration.
EN 933-1, Tests for geometrical properties of aggregates — Part 1: Determination of particle size distribution —
Sieving method.
EN 933-2, Tests for geometrical properties of aggregates — Part 2: Determination of particle size distribution —
Test sieves, nominal size of apertures.
EN 933-5, Tests for geometrical properties of aggregates — Part 5: Determination of percentage of crushed and
broken surfaces in coarse aggregate particles.
EN 933-10, Tests for geometrical properties of aggregates — Part 10: Assessment of fines – Grading of filler
aggregates (air jet sieving).
EN 1097-1, Tests for mechanical and physical properties of aggregates — Part 1: Determination of the
resistance to wear (micro-Deval)
EN 1097-2, Tests for mechanical and physical properties of aggregates — Part 2: Methods for the
determination of resistance to fragmentation
EN 1097-3, Tests for mechanical and physical properties of aggregates — Part 3: Determination of loose bulk
density and voids.
EN 1097-4, Tests for mechanical and physical properties of aggregates — Part 4: Determination of the voids of
dry compacted filler.
EN 1097-5, Tests for mechanical and physical properties of aggregates — Part 5: Determination of the water
content by drying in a ventilated oven.
EN 1097-6:2011, Tests for mechanical and physical properties of aggregates — Part 6: Determination of
particle density and water absorption.
EN 1097-8, Tests for mechanical and physical properties of aggregates — Part 8: Determination of the
polished stone value.
EN 1097-9, 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, Tests for mechanical and physical properties of aggregates — Part 10: Determination of water
suction height.
EN 1367-5, Tests for thermal and weathering properties of aggregates — Part 5: Determination of resistance
to thermal shock.
EN 1744-1:2009, Tests for chemical properties of aggregates — Part 1: Chemical analysis.

EN 1744-3, Tests for chemical properties of aggregates — Part 3: Preparation of eluates by leaching of
aggregates.
EN 12664, Thermal performance of building materials and products - Determination of thermal resistance by
means of guarded hot plate and heat flow meter methods - Dry and moist products of medium and low
thermal resistance.
EN 12667, Thermal performance of building materials and products - Determination of thermal resistance by
means of guarded hot plate and heat flow meter methods - Products of high and medium thermal resistance.
EN 12697-11, Bituminous mixtures - Test methods for hot mix asphalt - Part 11: Determination of the affinity
between aggregate and bitumen.
EN 13179-1, Tests for filler aggregate used in bituminous mixtures - Part 1: Delta ring and ball test.
EN 13286-7, Unbound and hydraulically bound mixtures - Part 7: Cyclic load triaxial test for unbound mixtures.
EN ISO 10456, Building materials and products – Hygrothermal properties - Tabulated design values and
procedures for determining declared and design thermal values.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply
3.1
aggregate
granular material used in construction. Aggregate can be natural, manufactured, by-product or recycled
3.2
lightweight aggregate
3 3
aggregate of mineral origin having a particle density not exceeding 2000 kg/m (2,000 Mg/m ) or a loose bulk
3 3
density not exceeding 1200 kg/m (1,200 Mg/m )
3.3
natural aggregate
aggregate from mineral sources which has been subjected to nothing more than mechanical processing
3.4
manufactured aggregate
aggregate of mineral origin resulting from an industrial process involving thermal or other modification
3.5
by-product aggregate
aggregate of mineral origin from an industrial process which subsequently has been subjected to nothing
more than mechanical processing
3.6
recycled aggregate
aggregate resulting from processing of inorganic material previously used in construction
3.7
fine lightweight aggregate
designation given to the smaller aggregate size with d equal to or greater than 0 mm and D less than or equal
to 4 mm
3.8
coarse lightweight aggregate
designation given to the larger aggregate size with d equal to or greater than 2 mm and D greater than 4 mm
3.9
all in lightweight aggregate
designation given to the aggregate size with d equal to or greater than 0 mm and D greater than 4 mm
3.10
lightweight filler aggregate
filler derived from lightweight aggregate, from which most passes a 0,063 mm sieve and 100 % passes a
0,125 mm sieve
3.11
grading
particle size distribution expressed as the percentage by mass passing a specified number of sieves
3.12
aggregate size
designation of aggregate in terms of lower sieve (d) and upper sieve (D) sizes expressed as d/D
Note 1 to entry: The designation accepts the presence of some particles which are retained on the upper sieve
(oversize) and some particles which pass the lower sieve (undersize).
3.13
constant mass
successive weighings after drying and conditioning at least 1 h apart not differing by more than 0,1 %
4 Symbols and abbreviations
d  lower sieve
D  upper sieve
LWA  lightweight aggregate(s)

PSV  polished stone value
5 Requirements
5.1 General
The necessity for testing and declaring all properties specified in this clause shall be limited according to the
particular application at end use or origin of the aggregate. When required, the tests specified shall be carried
out to determine appropriate properties.
5.2 Density
5.2.1 Loose bulk density
Loose bulk density shall be declared. It shall be determined in accordance with EN 1097-3. The values shall
3 3
be in the range of ± 15 % with a maximum of ± 100 kg/m (0,100 Mg/m ) of the declared value.
NOTE The container should be filled using a standard scoop held centrally over the container and without touching it.
5.2.2 Particle density
When required the particle density shall be determined in accordance with EN 1097-6, Annex C and E and
3 3
recorded. It shall be in the range of ± 15 % with a maximum of ± 150 kg/m (0,150 Mg/m ) of the declared
value.
5.3 Aggregate size
5.3.1 General
Aggregate sizes shall be designated using a pair of sieve sizes selected from the basic set, or the basic set
plus set 1, or the basic set plus set 2 specified in Table 1.
NOTE This designation accepts the presence of some particles which will be retained on the upper sieve (sometimes
referred to as (D)) and some which will pass the lower sieve (sometimes referred to as (d)).
Table 1 — Sieve sizes for specifying aggregate sizes
Basic set Basic set plus set 1 Basic set plus set 2
(mm) (mm) (mm)
0 0 0
0,25 0,25 0,25
0,5 0,5 0,5
1 1 1
2 2 2
- 2,8 (3) 3,15 (3)
4 4 4
- 5,6 (5) -
- - 6,3 (6)
8 8 8
- - 10
- 11,2 (11) -
- - 12,5 (12)
- - 14
16 16 16
- - 20
- 22,4 (22) -
31,5 (32) 31,5 (32) 31,5 (32)
- - 40
- 45 -
63 63 63
NOTE Figures in parenthesis can be used to provide simplified descriptions of aggregate sizes.

5.3.2 Undersize
The quantity of the undersize passing the lower sieve (d) shall not exceed 15 % by mass.
5.3.3 Oversize
The quantity of the oversize retained on the upper sieve (D) shall not exceed 10 % by mass. When required
the sieve through which 100 % of the aggregate passes shall be declared.
5.4 Grading
The particle size distribution shall be determined in accordance with EN 933-1 without washing.
NOTE Care should be taken with friable aggregates to prevent degradation.
5.5 Fines content in LWA
When required the content of fines in LWA shall be determined in accordance with EN 933-1 without washing.
NOTE Care should be taken with friable aggregates to prevent degradation.
5.6 Grading of lightweight filler aggregate
When required the particle size distribution of lightweight filler aggregate shall be determined in accordance
with EN 933-10.
5.7 Particle shape
When required particle shape shall be described.
NOTE Test methods for normal weight aggregates are not applicable.
5.8 Water content
When required the water content of the LWA shall be determined in accordance with EN 1097-5.
NOTE In many cases constant mass can be achieved after a test portion has been dried for a pre-determined period
in a specified oven at (110 ± 5) °C. Test laboratories can determine the time required to achieve constant mass for specific
types and sizes of sample dependent upon the drying capacity of the oven used.
5.9 Water absorption
When required the water absorption of coarse LWA shall be determined in accordance with EN 1097-6 Annex
C and E
5.10 Bulk crushing resistance
When required the bulk crushing resistance of LWA shall be determined in accordance with Annex C.
NOTE 1 There is no simple relationship between the bulk crushing resistance of LWA and the properties at its end use.
NOTE 2 The bulk crushing resistance is intended only for factory production control and quality documentation.
5.11 Percentage of crushed particles
When required the percentage of crushed particles of LWA shall be determined in accordance with EN 933-5.
NOTE This test method may not be applicable to all LWA having a bulk density of less than 150 kg/m (0,150
Mg/m ).
5.12 Resistance to disintegration
When required the resistance to disintegration for LWA shall be determined in accordance with prEN 1367-z.
NOTE This test method may not be applicable to all LWA having a bulk density of less than 150 kg/m (0,150
Mg/m ).
5.13 Freezing and thawing resistance
When required the resistance to freezing and thawing of LWA used in exposed hydraulically and unbound
applications having a particle size of not less than 4 mm and a bulk density of not less than 150 kg/m
(0,150 Mg/m ) shall be determined in accordance with prEN 1367-x.
When the resistance to freezing and thawing of aggregates of 4 mm or less (e.g. fine LWA or LWA fillers) or a
3 3
density of less than 150 kg/m (0,150 Mg/m ) is required in the end use situation, it shall be derived from a
freeze-thaw test on the final product in accordance with the provisions valid at the place of use.
Alternatively aggregates can be assessed on the basis of satisfactory service record of performance or test on
the final product.
5.14 Water suction height
When required the water suction height of LWA shall be determined in accordance with EN 1097-10.
5.15 Compressibility and confined compressive strength
When required the compressibility and confined compressive strength of LWA shall be determined in
accordance with prEN 1097-y.
3 3
NOTE This test method developed for LWA having a bulk density of not less than 150 kg/m (0,150 Mg/m ) has not
been fully evaluated with all types of lightweight aggregates.
5.16 Resistance to cyclic compressive loading
When required the resistance to cyclic compressive loading of LWA shall be determined in accordance with
EN 13286-7.
3 3
NOTE This test method may not be applicable to all LWA having a bulk density of less than150 kg/m (0,150 Mg/m ).
5.17 Stiffening properties
When required the stiffening properties of lightweight filler aggregate in bituminous mixtures shall be
determined in accordance with EN 13179-1.
5.18 Voids of dry compacted lightweight filler aggregate
When required the voids of dry compacted lightweight filler aggregate shall be determined in accordance with
EN 1097-4.
NOTE The test method developed primarily for normal weight aggregates has not been evaluated for its suitability for
LWA to establish a pattern of use.
5.19 Resistance to thermal shock
When required the resistance to thermal shock of LWA shall be determined in accordance with EN 1367-5.
NOTE The test method developed primarily for normal weight aggregates has not been evaluated for its suitability for
LWA to establish a pattern of use.
5.20 Resistance to polishing (PSV)
When required the polished stone value (PSV) of coarse LWA shall be determined in accordance with EN
1097-8.
NOTE The test method developed primarily for normal weight aggregates has not been evaluated for its suitability for
LWA to establish a pattern of use.
5.21 Resistance to wear by abrasion from studded tyres of coarse LWA in surface
treatments (Nordic test)
When required the resistance to abrasion from studded tyres (Nordic test) shall be determined in accordance
with EN 1097-9.
NOTE The test method developed primarily for normal weight aggregates has not been evaluated for its suitability for
LWA to establish a pattern of use.
5.22 Affinity between LWA and bitumen
When required the affinity between LWA and bitumen shall be determined in accordance with EN 12697-11.
NOTE The test method developed primarily for normal weight aggregates has not been evaluated for its suitability for
LWA to establish a pattern of use.
5.23 Resistance to fragmentation (Los Angeles)
When required the resistance to fragmentation of coarse LWA shall be determined in accordance with EN
1097-2
NOTE The test method developed primarily for normal weight aggregates has not been evaluated for its suitability for
LWA to establish a pattern of use.
5.24 Resistance to wear (micro Deval)
When required the resistance to wear of coarse LWA shall be determined in accordance with EN 1097-1.
NOTE The test method developed primarily for normal weight aggregates has not been evaluated for its suitability for
LWA to establish a pattern of use.
5.25  Chemical requirements
5.25.1 General
The necessity for testing and declaring all properties in this clause is limited to particular application at end
use or origin of the aggregate. When required the tests specified in this clause shall be carried out to
determine the appropriate chemical content by mass. If comparing a determination to a limiting value the
chemical content by mass shall be converted to a comparison value in accordance with the following equation:
loose bulk density
V =V ⋅
c m
where:
V is the comparison value;
c
V is the value measured in accordance with EN 1744-1;
m
1500 is the assumed nominal loose bulk density of normal weight aggregate.
NOTE Further guidance is given in Annex D.
5.25.2 Water solubility
When required the water solubility of lightweight filler aggregate used in bituminous mixtures shall be
determined in accordance with EN 1744-1.
5.25.3 Chloride
When required the water-soluble chloride ion content shall be determined in accordance with EN 1744-1.

NOTE Further guidance is given in Annex E.
5.25.4 Sulphur containing compounds
5.25.4.1 Acid-soluble sulphate
When required the acid-soluble sulphate content shall be determined in accordance with EN 1744-1.

5.25.4.2 Total sulphur
When required the total sulphur content shall be determined in accordance with EN 1744-1.

5.25.5 Loss on ignition (for ashes only)
The loss on ignition shall be determined in accordance with EN 1744-1.

5.25.6 Water-soluble constituents
When required the water-soluble constituents shall be determined in accordance with EN 1744-3.
5.25.7 Organic contaminators
When required harmful components in natural lightweight aggregates i.e., those which alter the rate of setting
and hardening of concrete, mortar and grout shall be determined in accordance with EN 1744-1:2009 (see
15.3).
NOTE Further guidance is given in Annex E.
5.25.8 Alkali-silica reactivity of natural lightweight aggregates
When required, the alkali-silica reactivity of natural lightweight aggregates shall be assessed in accordance
with the provisions valid in the place of use.
NOTE Guidance on the effects of alkali-silica reactivity is given in Annex E.
5.26 Thermal conductivity
5.26.1 General
When required the thermal conductivity of LWA (including air voids) shall be determined in the air dry
condition in accordance with EN 12664 or EN 12667 in the case of dry LWA with a thermal conductivity value
less than 0,15 W/(mK).
5.26.2 Correction for moisture
Design values shall be obtained by correcting measured values in accordance with EN ISO 10456.
6  Testing
6.1 Sampling and sample reduction
Sampling and sample reduction shall be carried out in accordance with EN 932-1, and if required in
accordance with EN 932-2.
NOTE To ensure a representative sample care should be taken to minimize segregation and degradation.
6.2 Quantity of test specimens
The test specimen quantity specified in any test method shall, if not taken into account for LWA, be corrected
on the basis of loose bulk density (see example in Annex D).
6.3 Preparation of test specimens for thermal conductivity testing
6.3.1 Drying
Test specimens shall be dried in accordance with EN 1097-5.
6.3.2 Conditioning after drying
Allow the test specimen to cool to room temperature. When required allow the test specimen to condition to
moisture equilibrium at (23 ± 5)°C and (50 ± 10) % relative humidity.
6.3.3 Preparation of test specimens
Care shall be taken to avoid excessive segregation and crushing when placing material in the apparatus. The
density of the specimen shall be determined and declared, based on the mass of the specimen and the
dimensions of the specimen enclosure.
6.3.4 Thickness of test specimens
Test specimens shall be at least 10 times as thick as the mean aggregate size in the sample.
NOTE Test specimens with a thickness of five times the mean aggregate size are permitted if it can be shown that
the required testing accuracy is obtained.
7 Evaluation of conformity
7.1 General
The producer shall undertake initial type testing (see 7.2) and Factory Production Control (see 7.3) to ensure
that the product conforms to this European Standard and to declared values as appropriate.
7.2 Initial type testing
Initial type testing relevant to the intended end use shall be carried out to check compliance with specified
requirements in the following circumstances:
a) a new source of aggregates is to be used;
b) there is a major change in the nature of the raw materials or in the processing conditions, which may
affect significantly the properties of the aggregates.
The results of the initial testing shall be documented as the starting point of the factory production control for
that material.
7.3 Factory production control
The producer shall have in place a system of factory production control that complies with the principles of
Annex F.
The records held by the producer shall indicate what control procedures are in operation during the production
of the aggregate.
NOTE The form of control applied to any aggregate depends upon its manufacturing process, its intended use and
the regulations relating to that use.
8 Designation, supply marking and labelling
8.1 Designation
LWA shall be identified in the following terms:
a) name of producer/supplier or trademark;
b) product type (see table A.2);
c) aggregate size;
d) loose bulk density;
e) reference to this standard;
f) any additional information needed to identify the particular lightweight aggregate.
8.2 Supply
8.2.1 The supply of material shall be by volume or mass.
8.2.2 All the material shall be protected against contamination.
8.3 Marking and labelling
Every consignment of lightweight aggregates shall be identified by a numbered delivery note containing the
following information:
a) designation;
b) source or place of manufacture;
c) date of dispatch from the suppliers works;
d) quantity;
e) customer’s name and address.
NOTE For CE marking and labelling see Annex ZA.3.

Annex A
(normative)
Source materials considered in the development of EN 13055 and their
status in respect of the scope of the standard.
A.1 General
The source types listed in this Annex have been considered in the preparation of this standard. Their status
within the standard is indicated in Table A.2. Source materials not described here are outside the scope of EN
13055.
NOTE 1 CEN/TC 154 intends to keep this inventory under continual review. Any relevant information to assist in the
updating of this annex including any proposal for the inclusion of new source material types can be submitted to the
secretariat of CEN/TC 154.
Sources with no history of use, according to one or more of the intended uses specified in Table A.1, are
outside the scope of the standard.
Sources with a positive history of use and no identification of the need for additional requirements are fully
within the scope of the standard.
Sources with a positive history of use and where the need for additional requirements has been identified are
provisionally within the scope pending the inclusion of suitable requirements and test methods.
NOTE 2 In situations where the need for additional requirements has been identified, such materials, when placed on
the market as aggregates, comply fully with this standard but may also be required to comply with specific relevant
additional requirements at the place of use. Additional characteristics and requirements may be specified on a case-by-
case basis depending upon experience of use of the product, and defined in specific contractual documents.
In all cases there is an obligation to control the potential release of regulated dangerous substances (RDS) in
accordance with Member State requirements at the place of use.
NOTE 3 Under an extension to its mandate, M/125, CEN/TC 154 is currently developing requirements for the
declaration of the potential of aggregates to release regulated dangerous substances under Essential Requirement No. 3.
It is anticipated that the source classifications in this Annex will be used as the basis of families for the collation of data
and the development of source specific requirements for regulated dangerous substances. Any input to this process can
be made through the secretariat of CEN/TC 154.

Table A.1 — Intended uses according to mandate M/125 for
EN 13055 lightweight aggregates (LWA)
Bituminous
Unbound and hydraulically
Mortar and mixtures and
Intended uses Concrete bound mixtures (other than
grout surface
concrete, mortar and grout)
treatments
Codes in Table A.2 U1 U2 U3 U4

Table A.2 — Inventory list with classification codes for source materials for
EN 13055 lightweight aggregates (LWA)
Additional
Positive
Specific
requirements
Nr. Source material Subnr. Specific LWA material requirements
history of
identified for
a)
in standard
intended uses
inclusion
LA1 Pumice U1,U2, U4 Yes No
LA Natural LWA LA2 Scoria U1 Yes No
LA3 Tuff U1, U4 Yes No
LB1 Expanded clay U1, U2, U3, U4 No No
LB2 Expanded shale U1, U2, U3, U4 No No
Manufactured LWA
LB from natural source LB3 Expanded slate U1, U2, U3, U4 No No
materials
LB4 Expanded perlite U1, U2, U3, U4 No No
LB5 Exfoliated vermiculite U1, U2, U3, U4 No No
LC1 Sintered pulverised fly ash U1, U2, U3, U4 No No
Cold bonded pulverised fly
LC2 U1, U2, U4 Yes No
ash
Manufactured LWA
Foamed blast furnace
from by-products of
LC3 U1, U2, U4 No No
(iron-) slag
LC industrial processes or
recycled source
Expanded pelletized blast
LC4 U1, U2, U4 No No
materials
furnace (iron-) slag
LC5 Expanded glass U1, U2 No Yes
LC6 Foamed glass U1, U4 No Yes
LD1 Furnace clinker U1, U2, U4 Yes No
LWA as by-products of Furnace bottom ash (BA,
LD LD2 b) U1, U2, U4 Yes No
industrial processes FBA)
b)
LD3 Coal fly ash (FA, PFA) U1, U2, U3, U4 Yes No
a) Intended uses/applications as defined in Table A.1.
b) From coal fired power generation

NOTE Bibliography: CEN/TC 154/N502, Mandate M/125 (1999) and CEN/TC 154/SC5/N529, EuroLightCon, R15.

Annex B
(normative)
Standards covering other applications of lightweight aggregates
This standard does not apply to expanded clay, expanded perlite or exfoliated vermiculite for loose-fill thermal
insulation applications or to expanded clay for civil engineering applications. Requirements for these
lightweight aggregates and applications are covered by the following standards:
EN 14063-1, Thermal insulation material products – In-situ formed expanded clay lightweight aggregate
products (LWA) — Part 1: Specification for the loose-fill products before installation
prEN 14063-2, Thermal insulation products for buildings – In-situ formed expanded clay lightweight aggregate
products — Part 2: Specification for the installed products
EN 14316-1, Thermal insulation products for buildings – In-situ thermal insulation formed from expanded
perlite (EP) products — Part 1: Specification for bonded and loose-fill products before installation
EN 14316-2, Thermal insulation products for buildings – In-situ thermal insulation formed from expanded
perlite (EP) products — Part 2: Specification for the installed products
EN 14317-1, Thermal insulation products for buildings – In-situ thermal insulation formed from exfoliated
vermiculite (EV) products — Part 1: Specification for bonded and loose-fill products before installation
EN 14317-2, Thermal insulation products for buildings – In-situ thermal insulation formed from exfoliated
vermiculite (EV) products — Part 2: Specification for the installed products
EN 15599-1, Thermal insulation products for building equipment & industrial installations – In-situ thermal
insulation formed from expanded perlite (EP) products — Part 1: Specification for the bonded and loose-fill
products before installation
EN 15599-2, Thermal insulation products for building equipment & industrial installations – In-situ thermal
insulation formed from expanded perlite (EP) products — Part 2: Specification for the installed products
EN 15600-1, Thermal insulation products for building equipment & industrial installations – In-situ thermal
insulation formed from exfoliated vermiculite (EV) products — Part 1: Specification for the bonded and loose-
fill products before installation
EN 15600-2, Thermal insulation products for building equipment & industrial applications – In-situ thermal
insulation formed from exfoliated vermiculite (EV) products — Part 2: Specification for the installed products
prEN 15732, Lightweight fill and thermal insulation products for civil engineering applications (CEA) –
Expanded clay lightweight aggregate products (LWA)
Annex C
(normative)
Determination of bulk crushing resistance
C.1 Principle
A prepared sample of lightweight aggregate is placed in a specified steel cylinder and compacted by vibration.
A piston is then forced under pressure into the cylinder for a given distance, and the force required is
measured and expressed as the resistance to crushing.

Two test procedures are specified. Procedure 1 is normally applicable to lightweight aggregate in the size
3 3
range 4 mm to 22 mm and with a bulk density above 150 kg/m (0.150 Mg/m ). Procedure 2 is normally
3 3
applicable to a lightweight aggregate with a bulk density of 150 kg/m (0.150 Mg/m ) and below.
C.2 Apparatus
C.2.1 All apparatus, unless stated below, shall conform to the general requirements of EN 932-5.
C.2.2 Steel test cylinder and piston, as shown in Figure 1 for procedure 1 and Figure 2 for procedure 2.

NOTE The test cylinder should be tightened to the vibration table during the vibration to ensure the same amplitude
of the cylinder and aggregates as for the table.
C.2.3 Hydraulic press, or similar device capable of providing sufficient pressure for the test and measuring
the pressure to an accuracy of ± 5 %.

C.2.4 Vibrating table, operating at approximately 3000 oscillations per minute (50 Hz ± 1 Hz) and amplitude
(0,5 ± 0,05) mm with the equipment used during vibration in place.

NOTE It is important that the vibrating table is levelled horizontally, otherwise the vibration amplitude maybe uneven
for the aggregates inside the cylinder in addition to unnecessary wear of the test equipment.
C.2.5 Steel straightedge, of a suitable length.

C.2.6 Scoop, of suitable size to fill the test cylinder.

C.2.7 Thermostatically controlled ventilated drying oven, capable of a temperature of (110 ± 5)˚C.
C.3 Preparation of test specimens
Samples shall be taken in accordance with EN 932-1. The samples shall be dried to constant weight in
accordance with EN 1097-5. The samples are divided in accordance with EN 932-2 into three test specimens
of a volume of 1,2 – 1,5 litres each after removal of undersize and oversize.
C.4 Procedure
C.4.1 Procedure 1
Place the cylinder with lower and upper part on the vibrating table, and gently fill the whole test specimen into
the cylinder. Vibrate for 6 s to 120 s. Remove the top rail (upper part of the cylinder) and level the surface of
the lightweight aggregates using the straight edge. Alternatively only the lower part of the cylinder can be
used. Vibrate then twice 3 to 60 seconds and refill between the two vibrations.
NOTE If both cylinder parts are used, they should be securely fixed together to ensure equal amplitude of vibration of
the two parts.
Position the top rail on the cylinder and place the piston on the surface of the compacted lightweight
aggregates. Adjust the distance between the contact ring and the top rail to 20 mm and place the test
assembly in the hydraulic press.

Increase the force on the piston to reach a compression of 20 mm in approximately 100 s, and record the
force in newtons. Repeat the procedure with the remaining two test specimens.

C.4.2 Procedure 2
Place the cylinder on the vibrating table and gently fill to overflowing by discharging the test specimen using a
scoop, taking care to minimize the segregation of the lightweight aggregates. Vibrate the cylinder for 3 s and
fit the flanged collar on the test cylinder. Add additional lightweight aggregates to fill the collar and vibrate for a
further 3 s.
Remove the collar and level the lightweight aggregate and place the test assembly in the hydraulic press.

Increase the force on the piston to reach a compression of 50 mm in approximately 100 s, and record the
force in newtons.
Repeat the procedure with the remaining two test specimens.
C.5 Calculation and expression of results
Calculate the crushing resistance (C or C ) for each test specimen using the following equation:
a b
L+ F
C or C = N/mm
a b
A
where
C is the crushing resistance, in newtons per square millimetre, determined in
a
accordance with procedure 1;
C is the crushing resistance, in newtons per square millimetre, determined in
b
accordance with procedure 2;
L is the force exerted by the piston in newtons;
F is the compression force in newtons;
A is the area of the piston in square millimetres.

Calculate the mean value of the three results, and give the results with at least two significant figures.

C.6 Test report
The test report shall include the following information:

a) reference to this European Standard;
b) test carried out in accordance with procedure 1 or procedure 2;
c) identification of the test specimen;
d) identification of the test laboratory;
e) date of test;
f) mean crushing resistance (C or C );
a b
g) range of the three test results;
h) duration of vibration.
112,9  0,1 ±
112,8  0,1
±
113  0,1±
113  0,1±
Key
1 Adjustable height ring
2 Piston
3 Upper cylinder
4 Lower cylinder
5 Base
Figure C.1 — Test apparatus for procedure 1

18 100,5 100
20 60
100 118,5
76,2
96,2
Key
1 Mark 50 mm
2 Piston
3 Collar
4 Cylinder
5 Base
Figure C.2 — Test apparatus for procedure 2

75 10
Annex D
(informative)
Guidance on how to convert quantities by mass to quantities by volume
D.1 Background
Limiting values of chemical contents are based on normal weight aggregates with a loose bulk density of
3 3
approximately 1500 kg/m (1,500 Mg/m ).

Chemical contents determined in accordance with EN
...