Significance and Use
This test method is used to determine conformance with provisions of Specification C 33 pertaining to the amount of lightweight material in fine and coarse aggregates. A heavy liquid with a specific gravity of 2.0 is used to separate particles which may be classified as coal or lignite. Heavier liquids are to be used to check the percentages of other lightweight particles such as chert and shale having a specific gravity less than 2.40.
The test method is useful in identifying porous aggregate particles in research activities or in petrographic analyses.
1. Scope
1.1 This test method covers the determination of the percentage of lightweight pieces in aggregate by means of sink-float separation in a heavy liquid of suitable specific gravity.
1.2 The values given in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For a specific hazard statement, see 6.1.4.
2. Referenced Documents
C1005 Specification for Reference Masses and Devices for Determining Mass and Volume for Use in the Physical Testing of Hydraulic Cements
C125 Terminology Relating to Concrete and Concrete Aggregates
C127 Test Method for Density, Relative Density (Specific Gravity), and Absorption of Coarse Aggregate
C128 Test Method for Density, Relative Density (Specific Gravity), and Absorption of Fine Aggregate
C33 Specification for Concrete Aggregates
C702 Practice for Reducing Field Samples of Aggregate to Testing Size
D3665 Practice for Random Sampling of Construction Materials
D75 Practice for Sampling Aggregates
E100 Specification for ASTM Hydrometers
E11 Specification for Wire Cloth and Sieves for Testing Purposes
Index Terms
aggregate; heavy liquid; lightweight particles; ICS Number Code 91.100.30
DOI: 10.1520/C0123-04
ASTM International is a member of CrossRef.
Citing ASTM Standards
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