Evaluation of sub-microstructure in concrete with low water-binder ratio by SEM-BSE image analysis
作者： Chunxiang Qian , Mingfang Ba , Xingun Guo , Xiangyan Han
DOI: 10.1007/S11595-010-0070-7
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摘要: The coarse pore system, interfacial transition zone (ITZ) between aggregate and paste matrix volume fraction of unhydrated cement in concrete (w/c=0.3) containing mineral admixtures were quantitatively characterized by the scanning electron microscope-backscattered (SEM-BSE) image analysis technique. experimental results show that compound addition slag fly ash decreases porosity from 10.17% to 3.74% threshold diameter size 345 μm 105 compared with (w/c=0.30) without admixtures; Moreover slag, proportion is reduced 30%, maximum amount pores ITZ 13.11% 5.57% thickness 37%, admixtures.
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