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BS EN 933-5:2022

BS EN 933-5:2022

$142.49

Tests for geometrical properties of aggregates – Determination of percentage of crushed particles in coarse and all-in natural aggregates

Published By Publication Date Number of Pages
BSI 2022 24
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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. Examples of application of the test procedure and an example of a test data sheet are given in informative Annexes B and C.

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PDF Pages PDF Title
2 undefined
7 1 Scope
2 Normative references
3 Terms and definitions
8 4 Principle
9 5 Apparatus
6 Preparation of test portion
10 7 Procedure
7.1 Test portions consisting of one size fraction where D0 ≤ 2d0
7.2 Test portions consisting of two or more size fractions
11 8 Calculation and expression of results
8.1 Test portions consisting of one size fraction
12 8.2 Test portions consisting of two or more size fractions
9 Test report
9.1 Required data
13 9.2 Optional data
14 Annex A (informative)Guidance for estimated mass of various size fractions containing about 100 particles for aggregates with an oven-dried particle density of 2,65 Mg/m3
16 Annex B (informative)Examples of application of the test procedure
B.1 Test portion consisting of one size fraction
B.1.1 Preparation of test portion
B.1.2 Assessment of Ctc, Cc, and Ctr
17 B.1.3 Report
B.2 Test portion consisting of two or more size fractions
B.2.1 Preparation of test portion
18 B.2.2 Assessment of Ctc, Cc and Ctr
19 B.2.3 Report
20 Annex C (informative)Example of a test data sheet for a test portion consisting of one size fraction
C.1 General
C.2 Preparation of test portion d0/D0 where D0 ≤ 2d0
21 C.3 Sorting of particles in the test portion and subsequent calculation and expression of results

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BS EN 933-5:2022
$142.49