摘要
Thecoarseporesystem,interfacialtransitionzone(ITZ)betweenaggregateandpastematrixandvolumefractionofunhydratedcementinconcrete(w/c=0.3)containingmineraladmixtureswerequantitativelycharacterizedbythescanningelectronmicroscope-backscatteredelectron(SEM-BSE)imageanalysistechnique.Theexperimentalresultsshowthatcompoundadditionofslagandflyashdecreasesthecoarseporosityfrom10.17%to3.74%andthethresholddiameterofcoarseporesizefrom345μmto105μmcomparedwithconcrete(w/c=0.30)withoutmineraladmixtures;Moreoverwithcompoundadditionofflyashandslag,thevolumeproportionofunhydratedcementinpastematrixisreducedby30%,themaximumamountofcoarseporesintheITZbetweenaggregateandpastedecreasesfrom13.11%to5.57%andthethicknessofITZisreducedby37%,comparedwithconcretewithoutmineraladmixtures.
出版日期
2010年04月14日（中国期刊网平台首次上网日期，不代表论文的发表时间）
