The parameters of the air-void system of hardened concrete determined by the procedures described in this test method are related to the susceptibility of the cement paste portion of the concrete to damage by freezing and thawing. Hence, this test method can be used to develop data to estimate the likelihood of damage due to cyclic freezing and thawing or to explain why it has occurred. The test method can also be used as an adjunct to the development of products or procedures intended to enhance the resistance of concrete to cyclic freezing and thawing.
WJE laboratories are accredited by AASHTO (R18) and ANAB (ISO/IEC 17025) to perform testing standard ASTM C457 for Microscopical Determination of Parameters of the Air-Void System in Hardened Concrete.
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KeywordsASTM C457 - Chemical Composition - Hardened Concrete - Microscopy - Porosity - Surface Area
ICS CODE91.100.30 (Concrete and concrete products)
UNSPSC CODE30111500 (Concrete and mortars)
ASTM C457 / C457M-16, Standard Test Method for Microscopical Determination of Parameters of the Air-Void System in Hardened Concrete, ASTM International, West Conshohocken, PA, 2016, www.astm.org