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ASTM C441-05

Current Revision

Standard Test Method for Effectiveness of Pozzolans or Ground Blast-Furnace Slag in Preventing Excessive Expansion of Concrete Due to the Alkali-Silica Reaction

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1.1 This test method covers the determination of the effectiveness of pozzolans or slag in preventing the excessive expansion caused by reaction between aggregates and alkalies in portland cement mixtures. The evaluation is based on the expansion developed in mortar bars by a combination of portland cement and a pozzolan or slag, made with reactive aggregates (borosilicate glass), during storage under prescribed conditions of test.

1.2 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.


This test method may be used as a preliminary or screening test to evaluate the relative effectiveness of a number of different materials being considered for use to prevent excessive expansion due to alkali-silica reaction.

This test method may also be used to evaluate materials proposed for use on a particular job to prevent excessive expansion due to alkali-silica reaction, by testing in the quantity and in combination with the cement or cements to be used on the job.

This test method does not assess the suitability of pozzolans or slag for use in concrete. These materials should comply with Specification C 618, Specification C 989 or Specification C 1240.

SDO ASTM: ASTM International
Document Number C441
Publication Date May 1, 2005
Language en - English
Page Count 3
Revision Level 05
Supercedes
Committee C09.26
Publish Date Document Id Type View
May 1, 2005 C0441-05 Revision
Dec. 10, 2002 C0441-02A Revision
Aug. 10, 2002 C0441-02 Revision
June 10, 1997 C0441-97E01 Revision