The Expansion Test as a Measure of Alkali-Aggregate Reaction


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Title: The Expansion Test as a Measure of Alkali-Aggregate Reaction

Author(s): R. F. Blanks and H. S. Meissner

Publication: Journal Proceedings

Volume: 42

Issue: 4

Appears on pages(s): 517-540

Keywords: none

Date: 4/1/1946

Following the discovery that some aggregates are acted on by cement of inordinate alkali content it has become popular to make expansion measure: ments on s ecimens incorporating the offending materials, subjected to curing in closed, moisiure-laden containers. From the inherent limitations of such a test and the variety of ways in which it has been conducted, there has accumulated much conflicting data, the differences of which are discussed and recommendations given for greater tolerance in the interpretation of results. A procedure is proposed for appraising the reactive potentiality of prospective aggregates.