EN 932-3:1996/A1:2003
(Amendment)Tests for general properties of aggregates - Part 3: Procedure and terminology for simplified petrographic description
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- 16-Sep-2003
- 21-Jun-2022
- 91.100.15
- 305/2011
- 89/106/EEC
- CEN/TC 154
Tests for general properties of aggregates - Part 3: Procedure and terminology for simplified petrographic description
Provision for the examination of a minimum of 150 particles in the context of the scope of the standard, which is for a simple qualitative description rather than a quantitative analysis.
Prüfverfahren für allgemeine Eigenschaften von Gesteinskörnungen - Teil 3: Durchführung und Terminologie einer vereinfachten petrographischen Beschreibung
Essais pour déterminer les propriétés générales des granulats - Partie 3: Procédure et terminologie pour la description pétrographique simplifiée
Preskusi splošnih lastnosti agregatov - 3. del: Postopek in izrazje poenostavljenega petrografskega opisa
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Standards Content (Sample)
SLOVENSKI STANDARD
01-april-2004
Preskusi splošnih lastnosti agregatov - 3. del: Postopek in izrazje
poenostavljenega petrografskega opisa
Tests for general properties of aggregates - Part 3: Procedure and terminology for
simplified petrographic description
Prüfverfahren für allgemeine Eigenschaften von Gesteinskörnungen - Teil 3:
Durchführung und Terminologie einer vereinfachten petrographischen Beschreibung
Essais pour déterm
...
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This document applies to natural, manufactured, recycled or lightweight (LWA) aggregates.
NOTE This document does not apply to all types of LWA.
The reference test is performed with the addition of water. Annex B gives details of how the test can be performed without the addition of water.
Annex A specifies the method to determine the resistance to wear of aggregates for railway ballast without abrasive charge.
Annex C specifies the test performed with alternative narrow size fractions.
Annexes D and E specify methods for determining the wear of fine aggregates.
Precision data for the reference test method are given in Annex F.
Annex A is normative and Annexes B, C, D, E and F are informative.
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This document applies to coarse aggregate of sizes between 4 mm and 20 mm and to fine aggregate of size up to 2 mm. It does not apply to lightweight aggregates.
NOTE 1 For coarse aggregates between 4 mm and 20 mm, the flow coefficient is linked with the percentage of crushed or broken surfaces of an aggregate and can therefore be used in association with the method specified in EN 933-5. Shape and surface texture characteristics also influence the result.
NOTE 2 Experience of this test has been generally limited to natural aggregates.
Examples of test data sheets are given in informative Annexes A and C.
Annex B (informative) contains precision data.
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This document specifies the reference method, used for type testing and in case of dispute, for the determination of the percentages of crushed particles, totally crushed particles and totally rounded particles in coarse and all-in natural aggregates. Other methods can be used for other purposes, such as factory production control, provided that an appropriate working relationship with the reference method has been established.
NOTE 1 Examples of advanced test methods can be found in the Bibliography.
This document applies to coarse aggregates comprising particles within size fraction 4/63 mm. It does not apply to lightweight aggregates.
NOTE 2 For coarse aggregate between 4 mm and 20 mm the percentages of crushed surfaces are linked to the flow coefficient and can therefore be used in association with the test method specified in EN 933 6.
Clause 7.1 specifies the procedure for test portions consisting of one size fraction and Clause 7.2 specifies the procedure for test portions consisting of two or more size fractions.
Guidance for the estimated mass of various size fractions with about 100 particles is given in informative Annex A.
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NOTE 1 In principle, a qualified geologist (petrographer), with experience of materials used in civil engineering and aware of the composition of the deposit, has sufficient skills to sample and name the rock.
NOTE 2 For precise petrographic identification and technical requirements for specific applications, a non-exhaustive list of reference literature is given in the Bibliography.
This document applies only to natural aggregates. It is used to describe rocks and sediments. It does not apply to the description and identification of manufactured or recycled aggregates.
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This document specifies the reference methods used for type testing and in case of dispute, for the determination of particle density and water absorption of normal weight and lightweight aggregates. Other methods can be used for other purposes, such as factory production control, provided that an appropriate working relationship with the reference method has been established. For convenience, some of these other methods are also described in this document.
The reference methods for normal weight aggregates are:
- a wire basket method for aggregate particles retained on the 31,5 mm sieve (Clause 7, except for railway ballast which uses Annex B);
- a pyknometer method for aggregate particles passing the 31,5 mm sieve and retained on the 4 mm sieve (Clause 8);
- a pyknometer method for aggregate particles passing the 4 mm sieve and retained on the 0,063 mm sieve (Clause 9).
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For aggregate particles passing the 31,5 mm sieve and retained on the 4 mm sieve, the wire basket method in Clause 7 can be used as an alternative to the pyknometer method in Clause 8.
NOTE 1 The wire basket method can also be used for single aggregate particles retained on the 63 mm sieve.
NOTE 2 The pyknometer method described in Clause 8 can be used as an alternative for aggregates passing the 4 mm sieve and retained on the 2 mm sieve.
The reference methods for lightweight aggregates are:
- a pyknometer method for aggregate particles passing the 31,5 mm sieve and retained on the 4 mm sieve (Annex C). Three different particle densities (oven-dried; saturated and surface-dried; apparent) and water absorption are determined after pre-drying and a soaking period of 24 h;
- a method, using a Büchner funnel, for aggregate particles passing the 4 mm sieve (Annex D). The three particle densities and water absorption are determined using a vacuum in the range of 50 mbar to 100 mbar for at least five minutes.
Three other methods for normal weight aggregates can be used to determine the pre-dried particle density, as specified in normative Annexes A and H:
- a wire basket method for aggregate particles passing the 63 mm sieve and retained on the 31,5 mm sieve (A.3);
- a pyknometer method for aggregate particles passing the 31,5 mm sieve and retained on the 0,063 mm sieve (A.4);
- a pyknometer method for aggregate particles passing the 31,5 mm sieve, including the 0/0,063 mm size fraction (Annex H).
NOTE 3 If water absorption is less than about 1,5 %, the apparent particle density can be assessed using the pre-dried particle density method as defined in Annex A.
The quick method in normative Annex E can be used in factory production control to determine the apparent particle density of lightweight aggregates.
The method in informative Annex F can be used to determine the particle density and water absorption of aggregate particles passing the 4 mm sieve.
Data on the density of water at various temperatures is specified in normative Annex G.
Guidance on the significance and use of the various density and water absorption parameters is given in informative Annex I.
Precision data are presented in informative Annex J.
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This document specifies the nominal size of apertures for test sieves used for determination of particle size of aggregates.
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b) test sieves of metal wire cloth having aperture sizes below 4 mm down to 0,063 mm.
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This document informs users about the source materials that have been considered in the development of the aggregate standards:
- EN 12620 'Aggregates for concrete';
- EN 13043 'Aggregates for bituminous mixtures and surface treatments for roads, airfields and other trafficked are-as';
- 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: Product standard';
- EN 13450 'Aggregates for railway ballast';
- EN 13055 'Lightweight aggregates';
Only source materials with a history of use in one or more member states are included in this document. It also specifies source material with a history of use for the scope of only one specific aggregate standard.
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