(Received 29 November 2007; accepted 18 May 2008)
Published Online: 2008
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The foam index test can be useful for predicting air-entraining admixture (AEA) dosage in concrete or for evaluating AEA interaction with other mixture ingredients. The test is sensitive to several factors including total water content, water-cementitious materials ratio, ash-cementitious materials ratio, and others. This study isolates several key factors and examines their influence on foam index test results. Recommendations for a standard test are proposed.
Harris, Nathan J.
Engineer, Exponent Failure Analysis Associates, Menlo Park, CA
Hover, Kenneth C.
Professor, School of Civil and Environmental Engineering, Cornell University, Ithaca, NY
Folliard, Kevin J.
Associate Professor, Department of Civil Engineering, University of Texas, Austin, TX
Ley, M. Tyler
Assistant Professor, Civil and Environmental Engineering, Oklahoma State University, Stillwater, OK
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