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BS EN 1097-6:2013

$198.66

Tests for mechanical and physical properties of aggregates – Determination of particle density and water absorption

Published By Publication Date Number of Pages
BSI 2013 54
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This European Standard 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 may 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 standard. The reference methods for normal weight aggregates specified 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 test sieve and retained on the 4 mm test sieve (Clause 8); – a pyknometer method for aggregate particles passing the 4 mm test sieve and retained on the 0,063 mm test sieve (Clause 9). In Clauses 7, 8 and 9, three different particle density parameters (oven-dried particle density, saturated and surface dried particle density and apparent particle density) and water absorption are determined after a soaking period of 24 h. In Annex B, the oven-dried particle density parameter is determined after soaking in water to constant mass. The wire basket method may be used as an alternative to the pyknometer method for aggregate particles passing the 31, 5 mm test sieve and retained on the 4 mm test sieve. In case of dispute, the pyknometer method described in Clause 8 should be used as the reference method. 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 but retained on the 2 mm sieve. The reference method for lightweight aggregates (Annex C) is a pyknometer method for aggregate particles passing the 31,5 mm test sieve and retained on the 4 mm test sieve. Three different particle density parameters and water absorption are determined after pre-drying and a soaking period of 24 h. Three other methods for normal weight aggregates can be used to determine the pre-dried particle density: – a wire basket method for aggregate particles passing the 63 mm test sieve and retained on the 31,5 mm test sieve (A.3); – a pyknometer method for aggregate particles passing the 31,5 mm test sieve and retained on the 0,063 mm test sieve (A.4); – a pyknometer method for aggregate particles passing the 31,5 mm test sieve, including the 0/0,063 mm size fraction (Annex G). 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 Annex E can be used in factory production control to determine the apparent particle density of lightweight aggregates. Guidance on the significance and use of the various density and water absorption parameters is given in Annex H.

PDF Catalog

PDF Pages PDF Title
8 1 Scope
9 2 Normative references
3 Terms and definitions
10 4 Principle
5 Materials
6 Apparatus
14 7 Wire basket method for aggregate particles passing the 63 mm test sieve and retained on the 31,5 mm test sieve
7.1 General
7.2 Preparation of test portion
7.3 Test procedure
15 7.4 Calculation and expression of results
8 Pyknometer method for aggregate particles passing the 31,5 mm test sieve and retained on the 4 mm test sieve
8.1 General
16 8.2 Preparation of test portion
8.3 Test procedure
17 8.4 Calculation and expression of results
9 Pyknometer method for aggregate particles passing the 4 mm test sieve and retained on the 0,063 mm test sieve
9.1 General
9.2 Preparation of test portion
18 9.3 Test procedure
9.4 Calculation and expression of results
19 10 Test report
10.1 Required data
20 10.2 Optional data
21 Annex A (normative) Determination of pre-dried particle density of aggregates
A.1 General
A.2 Principle
A.3 Wire basket method for aggregate particles passing the 63 mm test sieve and retained on the 31,5 mm test sieve
A.3.1 Preparation of test portion
A.3.2 Test procedure
22 A.3.3 Calculation and expression of results
A.4 Pyknometer method for aggregate particles passing the 31,5 mm test sieve and retained on the 0,063 mm test sieve
A.4.1 Preparation of test specimen
23 A.4.2 Calibration of the pyknometer
A.4.3 Test procedure
A.4.4 Calculation and expression of results
24 A.5 Test report
A.5.1 Required data
A.5.2 Optional data
25 Annex B (normative) Determination of particle density and water absorption of coarse aggregates saturated to constant mass
B.1 General
B.2 Preparation of test portion
B.2.1 Sampling and sample reduction
B.2.2 Single particles of aggregate
B.2.3 Railway ballast
B.3 Test procedure
26 B.4 Calculation and expression of results
B.5 Test report
B.5.1 Required data
27 B.5.2 Optional data
28 Annex C (normative) Determination of particle density and water absorption of lightweight aggregates
C.1 General
C.2 Preparation of test specimen
C.3 Calibration of the pyknometer
29 C.4 Test procedure
C.5 Calculation and expression of results
30 C.6 Test report
C.6.1 Required data
31 C.6.2 Optional data
32 Annex D (normative) Density of water
33 Annex E (normative) Quick method for the determination of the apparent particle density of lightweight aggregates using a graduated measuring cylinder and short soaking times
E.1 General
E.2 Preparation of test specimen
E.3 Procedure
E.4 Calculation and expression of results
34 E.5 Test report
E.5.1 Required data
E.5.2 Optional data
35 Annex F (informative) Guidance on the saturated and surface-dried condition of fine aggregates
37 Annex G (normative) Determination of the pre-dried particle density of aggregates passing the 31,5 mm test sieve (including the 0/0,063 mm size fraction)
G.1 General
G.2 Principle
G.3 Preparation of the test portion
G.4 Test procedure
38 G.5 Calculation and expression of results
39 G.6 Test report
G.6.1 Required data
G.6.2 Optional data
40 Annex H (informative) Guidance on the significance and use of various particle density parameters and water absorption
H.1 General
41 H.2 Characteristics of the reference methods for normal weight aggregates according to Clauses 7, 8 and 9 and Annex B
42 H.3 Characteristics of the reference method for lightweight aggregates, specified in Annex C
43 H.4 Characteristics of the methods for determination of the pre-dried particle density of normal weight aggregates, specified in Annex A and Annex G
H.5 Selection of the appropriate particle density parameter
44 H.6 Applicability of and test conditions for the various test methods in EN 1097-6
45 H.7 Relationships between different particle density parameters (notations according to the main methods, specified in Clauses 7, 8 and 9)
46 Annex I (informative) Precision
I.1 Data from National Standards
47 I.2 Data from cross testing experiments
49 Annex J (informative) List of main changes from the previous edition (EN 1097-6:2000)
BS EN 1097-6:2013
$198.66