Air void clustering : [technical summary].

PDFBriefK-TRAN: KSU-13-6KansasKansas. Dept. of TransportationRiding, Kyle A.Esmaeily, AsadVosahlik, JanKansas State University. Transportation CenterUS Transportation CollectionAir void clustering around coarse aggregate in concrete has beenidentified as a potential source of low strengths in concrete mixes byseveral Departments of Transportation around the country. Researchwas carried out to (1) develop a quantitative measure of air voidclustering around aggregates; (2) investigate whether air void clusteringcan be reproduced in a laboratory environment; (3) determine if airvoid clustering contributes to lower compressive strengths in concretemixes; and (4) identify potential factors that may cause clustering