Developing a more rapid test to assess sulfate resistance of hydraulic cements.

From: Journal of Research of the National Institute of Standards andTechnology | Date: September 1, 2005| Author: | Copyright information

External sulfate attack of concrete is a major problem that can appear in regions where concrete is exposed to soil or water containing sulfates, leading to softening and cracking of the concrete. Therefore, it is important that materials selection and proportioning of concrete in susceptible regions be carefully considered to resist sulfate attack. American Society for Testing Materials (ASTM) limits the tricalcium aluminate phase in cements when sulfate exposure is of concern. The hydration products of tricalcium aluminate react with the sulfates resulting in expansion and ...

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