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ASTM C40 / C40M - 20
Standard Test Method for Organic Impurities in Fine Aggregates for Concrete
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Significance and Use
4.1 This test method is used in making a preliminary determination of the acceptability of fine aggregates with respect to the requirements of Specification C33/C33M that relate to organic impurities.
4.2 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 C87/C87M.
1. Scope
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
ASTM Standards
C33/C33M Specification for Concrete Aggregates
C87/C87M Test Method for Effect of Organic Impurities in Fine Aggregate on Strength of Mortar
C125 Terminology Relating to Concrete and Concrete Aggregates
C702/C702M Practice for Reducing Samples of Aggregate to Testing Size
D75/D75M Practice for Sampling Aggregates
D1544 Test Method for Color of Transparent Liquids (Gardner Color Scale)
ICS Code
ICS Number Code 91.100.30 (Concrete and concrete products)
Referencing This Standard
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DOI: 10.1520/C0040_C0040M-20
Citation Format
ASTM C40 / C40M-20, Standard Test Method for Organic Impurities in Fine Aggregates for Concrete, ASTM International, West Conshohocken, PA, 2020, www.astm.org
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