Calcine and mill kaolin were used under agreeable technological conditions to generate matakaolin(MK).The autogenous shrinkage performance of high performance concrete added with MK was researched.It is shown that MK has an effective inhibitory action to early autogenous shrinkage of cement concrete,and the inhibitory action increases with the increase of MK.The autogenous shrinkage values from 24 hours after placement to 56 days are all higher than those of the contrasted concrete,among which,the value of the concrete with 5%MK is the highest.But the total shrinkage values in 56 days are all less than those of the contrasted test pieces.The total contraction after 24 h of placement decreases as the increase of MK,moreover, it is greatly less than that of the contrasted ones.
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机译:Understanding the LEED program benefits contractors and their clients.<英文作者一>Peter Wagner<英作者单位一>=is a frequent contributor to Concrete Surfaces and is owner of Concrete Flooring Solutions
机译:materialmodell没有。 72 foer Betong:Erfarenheter fran en Experimentell och Numberisk studie(material modell no.72 for concrete-Experience from a Experimental and Numerical study)。