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ASTM C688-22

Current Revision

Standard Specification for Functional Additions for Use in Hydraulic Cements

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1.1 This specification covers methods to investigate the effectiveness of a material to beneficially change the properties of hydraulic cements when the material is incorporated during manufacture of the cement.

1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.3 The effect of additions in cement may markedly change properties other than those they are intended to modify. This specification is designed to test for such changes. Table 1 sets forth values for those properties of cement pastes and mortars that would permit a judgment of the changes effected by an addition. Likewise, Table 2 sets forth similar criteria for concrete. Certain additions may be found effective for more than one purpose as indicated in 3.1.4 and 3.1.5.

1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.


This specification covers methods to investigate the effectiveness of a material to beneficially change the properties of hydraulic cements when the material is interground with the clinker during manufacture of the cement. Cement, mortar, and concrete shall be tested and the individual grades shall conform to specified values of autoclave expansion, drying shrinkage, normal consistency, standard consistency, setting time, compressive strength, false set, water content, flexural strength, bond to steel, volume change, resistance to freezing and thawing, and bleeding. Accelerating addition, retarding addition, set-control addition, water-reducing addition, water-reducing and accelerating addition are detailed.


SDO ASTM: ASTM International
Document Number C688
Publication Date Dec. 15, 2022
Language en - English
Page Count 5
Revision Level 22
Supercedes
Committee C01.20
Publish Date Document Id Type View
Dec. 15, 2022 C0688-22 Revision
Feb. 1, 2014 C0688-14 Revision
Dec. 1, 2008 C0688-08E01 Revision
Dec. 1, 2008 C0688-08 Revision
June 10, 2000 C0688-00 Revision
July 1, 2005 C0688-00R05 Reaffirmation