CRD-C661-06 Specification for Antiwashout Admixtures for Concrete   

Date: 
03-01-2006

This specification covers materials for use as anti-washout admixtures to be added to portland cement concrete mixtures for purposes of preventing washout of cement and other fine fractions of materials from underwater concrete. This specification stipulates tests of an antiwashout admixture either with a standard concrete, as described in 11.1 through 11.3, or with a concrete proposed for specific work (11.4). Unless specified otherwise by the purchaser, the tests shall be made using the standard concrete, as described in 11.1 through 11.3.

Note 1 - It is recommended that, whenever practicable, tests be made using the cement, pozzolan, aggregates, air-entraining admixture, and the mixture proportions, batching sequence, and other physical conditions proposed for the specific work (11.4) because the specific effects produced by chemical admixtures may vary with the properties and proportions of the other ingredients of the concrete.

Page(s): 
15
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