ASTM-C40 › Historical Revision Information
Standard Test Method for Organic Impurities in Fine Aggregates for Concrete
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Scope
1.1 This test method covers two procedures for an approximate determination of the presence of injurious organic impurities in fine aggregates that are to be used in hydraulic cement mortar or concrete. One procedure uses a standard color solution and the other uses a glass color standard.
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 problems, 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.
Significance and Use
This test method is used in making a preliminary determination of the acceptability of fine aggregates with respect to the requirements of Specification C 33
The principal value of this test method is to furnish a warning that injurious amounts of organic impurities may be present. When a sample subjected to this test produces a color darker than the standard color it is advisable to perform the test for the effect of organic impurities on the strength of mortar in accordance with Test Method C 87
Keywords
colorimetric test; fine aggregate; organic impurities
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-C40-04
Revision Level
2004 EDITION
Status
Superseded
Modification Type
Revision
Publication Date
Jan. 1, 2004
Document Type
Test Method
Page Count
2 pages
Committee Number
C09.20