ASTM-C123 Historical Revision Information
Standard Test Method for Lightweight Particles in Aggregate

ASTM-C123 - 2012 EDITION - SUPERSEDED
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Standard Test Method for Lightweight Particles in Aggregate (Withdrawn 2023)
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Scope

1.1 This test method covers the determination of the percentage of lightweight particles in aggregate by means of sink-float separation in a heavy liquid of suitable specific gravity.

1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. Some values have only SI units because the inch-pound equivalents are not used in the practice.

Note 1—Sieve size is identified by its standard designation in Specification E11. The alternative designation given in parentheses is for information only and does not represent a different standard sieve size.

1.3 The text of this standard references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard.

1.4 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.

Significance and Use

This test method is used to determine conformance with provisions of Specification C33 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.

Keywords

aggregate; heavy liquid; lightweight particles; Coarse aggregate; Fine aggregate; Lightweight aggregate; Sieve analysis--aggregate; Sink-float method; ICS Number Code 91.100.30 (Concrete and concrete products)

To find similar documents by ASTM Volume:

04.02 (Concrete and Aggregates)

To find similar documents by classification:

91.100.30 (Concrete and concrete products Including admixtures)

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Document Number

ASTM-C123/C123M-12

Revision Level

2012 EDITION

Status

Superseded

Modification Type

Revision

Publication Date

March 31, 2012

Document Type

Test Method

Page Count

3 pages

Committee Number

C09.20