Effect of blended cements on effectiveness of internal curing in HPC

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Journal titleACI SP-256-9, Internal Curing of High-Performance Concrete: Lab and Field Experiences, Eds.: B.J. Mohr and D.P. Bentz
Pages116; # of pages: 16
SubjectHigh performance / High strength concrete
AbstractThe effects of internal curing, type of blended cement and coarse aggregate size on early-age expansion, autogenous shrinkage and strength of high-performance concrete were investigated. To do so, twelve high-performance concrete mixtures were developed and tested under sealed and room temperature conditions. The results were statistically analyzed using the paired comparison design method. It was shown that internal curing of HPC with pre-saturated porous lightweight aggregate allowed significant autogenous expansion and resulted in considerable reduction in net autogenous shrinkage. The type of cement used in concrete, which was either ordinary Portland cement, silica fume blended cement, or slag/silica fume blended cement, had a strong effect on early-age expansion, autogenous shrinkage, and the effectiveness of internal curing. For instance, the concrete specimens made with silica fume blended cement, which yielded the largest autogenous shrinkage strains under sealed conditions, obtained the best reductions in autogenous shrinkage when tested under an internal curing condition.
Publication date
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
NRC number51280
NPARC number20374944
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Record identifier41860934-618a-4ed7-9a64-222c848f51e2
Record created2012-07-23
Record modified2016-05-09
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