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骨料尺寸对微区泌水及界面区结构特征的影响 被引量:9

Influence of Aggregate Size on Micro-bleeding and Microstructure of Interfacial Transition Zone
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摘要 利用显微硬度、背散射电子像以及扫描电镜能谱,研究了因微区泌水造成的混凝土不同尺寸骨料下方骨料-浆体界面过渡区性能的差异.结果表明,随着混凝土骨料尺寸的增大,其下方骨料-浆体界面过渡区中未水化水泥颗粒更少、孔隙率更大、Ca(OH)2更多. The performances of interfacial transition zone(ITZ) influenced by the micro-bleeding under different size of aggregates were investigated by micro-hardness, backscattered electron imaging and SEM-EDS.Result shows that the content of un-hydrated cement grains in ITZ decreases with the increase of aggregate size,while porosity and Ca(OH)2 content increases.
作者 董华 钱春香
出处 《建筑材料学报》 EI CAS CSCD 2008年第3期334-338,共5页 Journal of Building Materials
基金 国家自然科学基金重点项目(50539040) 教育部新世纪优秀人才支持计划(NCEF-05-0437)
关键词 骨料尺寸 微区泌水 界面过渡区 显微硬度 背散射电子像 扫描电镜能谱 aggregate size micro-bleeding ITZ micro-hardness backscattered electron imaging SEM-EDS
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参考文献11

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