1 Scope
This Part of GB/T 17431 specifies the general requirements and sampling for test methods for lightweight aggregates as well as the test methods for grain composition (sieve analysis), bulk density, apparent density, void ratio, intensity of cylinder pressure, intensity label, water absorption, softening coefficient, grain shape coefficient, silt and clay lump content, mass loss on boiling, loss on ignition, sulfide and sulfate content, organic content, etc.
This Part is applicable to the quality inspection of lightweight aggregates used for concrete. Other types of lightweight aggregates and those for other purposes may make reference to this Part.
2 Normative References
The following normative documents contain provisions which, through reference in this Part of GB/T 17431, constitute provisions of this Part. For dated reference, subsequent amendments to, or revisions of, any of these publications do not apply. However, all parties coming to an agreement according to this Part are encouraged to study whether the latest editions of these documents are applicable. For undated references, the latest edition of the normative document referred to applies.
1 Scope 1
2 Normative References 1
3 General Requirements 2
4 Sampling 2
5 Grain Composition (Sieve Analysis) 3
6 Bulk Density 5
7 Apparent Density 6
8 Void Ratio 6
9 Intensity of Cylinder Pressure 7
10 Intensity Label 9
11 Water Absorption 12
12 Softening Coefficient 13
13 Grain Shape Coefficient 14
14 Silt and Clay Lump Content 14
15 Mass Loss on Boiling 16
16 Loss on Ignition 17
17 Sulfide and Sulfate Content 18
18 Organic Content 19
19 Chloride Content 21
20 Radioactivity 21
