Standard Test Method for Effect of Organic Impurities in Fine Aggregate on Strength of Mortar
Standard Test Method for Effect of Organic Impurities in Fine Aggregate on Strength of MortarC0087-05ASTM|C0087-05|en-USStandard Test Method for Effect of Organic Impurities in Fine Aggregate on Strength of MortarStandardC87 Standard Test Method for Effect of Organic Impurities in Fine Aggregate on Strength of Mortar>newBOS Vol. 04.02 Committee C09
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Significance and Use
This test method is of significance in making a final determination of the acceptability of fine aggregates with respect to the requirements of Specification C 33 concerning organic impurities.
This test method is applicable to those samples which, when tested in accordance with Test Method C 40, have produced a supernatant liquid with a color darker than standard color plate No. 3 or color solution.
Many specifications provide for the acceptance of fine aggregate producing a darker color in the Test Method C 40 test, when testing by this test method indicates the strength of the mortar cubes prepared with the unwashed fine aggregate is comparable to the strength of mortar cubes made with the washed fine aggregate.
Scope
1.1 This test method covers the determination of the effect on mortar strength of the organic impurities in fine aggregate, whose presence is indicated using Test Method C 40. Comparison is made between compressive strengths of mortar made with washed and unwashed fine aggregate.
1.2 The SI values shown are to be regarded as the standard. The inch-pound values shown in parentheses are provided for information purposes 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.(Warning—Fresh hydraulic cementitous mixtures are caustic and may cause chemical burns to exposed skin and tissue upon prolonged exposure.)²
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