ASTM-C87 › Historical Revision Information
Standard Test Method for Effect of Organic Impurities in Fine Aggregate on Strength of Mortar
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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 C40. Comparison is made between compressive strengths of mortar made with washed and unwashed fine aggregate.
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 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.)
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 C33 concerning organic impurities.
This test method is applicable to those samples which, when tested in accordance with Test Method C40, 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 C40 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.
Keywords
aggregate; fine aggregate; organic impurities; mortar strength; Cement mortars; Fine aggregate; Impurities--concrete/aggregate/mortar; Organic impurities; Strength--cement/concrete mixtures/applications; ICS Number Code 91.100.10 (Cement. Gypsum. Lime. Mortar)
To find similar documents by ASTM Volume:
04.02 (Concrete and Aggregates)
To find similar documents by classification:
91.100.10 (Cement. Gypsum. Lime. Mortar)
To find similar documents by Federal Supply Class Code:
FSC 5610 (Mineral Construction Materials, Bulk)
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Document Number
ASTM-C87/C87M-10
Revision Level
2010 EDITION
Status
Superseded
Modification Type
Revision with Designation Change
Publication Date
Dec. 15, 2010
Document Type
Test Method
Page Count
4 pages
Committee Number
C09.20