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等强混凝土界面过渡区的纳米压痕表征  ( EI收录)   被引量:9

Nanoindentation Characteristics of Interfacial Transition Zones in Concrete under Equal Compressive Strength

文献类型:期刊文献

中文题名:等强混凝土界面过渡区的纳米压痕表征

英文题名:Nanoindentation Characteristics of Interfacial Transition Zones in Concrete under Equal Compressive Strength

作者:何智海[1];钱春香[2];张异[2];赵飞[2]

机构:[1]绍兴文理学院土木工程学院;[2]东南大学材料科学与工程学院

年份:2014

卷号:17

期号:6

起止页码:1082

中文期刊名:建筑材料学报

外文期刊名:Journal of Building Materials

收录:CSTPCD、、北大核心2011、EI(收录号:20150200409137)、Scopus(收录号:2-s2.0-84920275155)、北大核心、CSCD、CSCD2013_2014

基金:国家重点基础研究发展计划(973计划)项目(2009CB623200)

语种:中文

中文关键词:等强混凝土;背散射电子图像分析;纳米压痕;界面过渡区;弹性模量

外文关键词:concrete under equal compressive strength; backscattered electron image analysis; nanoindent- ation; interracial transition zone; elastic modulus

中文摘要:通过背散射电子图像分析结合纳米压痕技术研究了等强混凝土界面过渡区性能.结果表明:矿物掺合料不同程度改善了等强混凝土界面过渡区性能,同时也增加了其非匀质性.双掺偏高岭土和石灰石粉可减小等强混凝土界面过渡区的厚度,明显降低其弹性模量增长幅度,但提高了基体的弹性模量,而粉煤灰仅仅降低了等强混凝土界面过渡区弹性模量的增长幅度.

外文摘要:The performances of interracial transition zones (ITZ) in concrete under equal compressive strengths were studied quantitatively by the backscattered electron image analysis and nanoindentation. The results indicate that mineral admixtures improve the performances of ITZ to the different degree, also increase the heterogeneities; a mixture of metakaolin(MK) and limestone powder(LP) can decrease the thickness of ITZ, and reduce the increase value of elastic modulus remarkably, and meanwhile it improves the elastic modulus in matrix; however, the improving function of fly ash(FA) on ITZ shows the decrease of the increase value of elastic modulus only.

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