Influence of slurried silica fume on microstructure and tritiated water diffusivity of cement pastes

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• 作者：Z. Bajja^a ; ^b ; ^{bajjazineb@gmail.com} ; ^{zineb.bajja@cea.fr} ; W. Dridi^a ; A. Darquennes^b ; R. Bennacer^b ; P. Le Bescop^a ; M. Rahim^c
• 关键词：Cement paste ; Durability ; Microstructure ; Slurried silica fume ; Tritiated water diffusion
• 刊名：Construction and Building Materials
• 出版年：2017
• 出版时间：1 February 2017
• 年：2017
• 卷：132
• 期：Complete
• 页码：85-93
• 全文大小：1711 K
• 卷排序：132

文摘

The impact of using densified (DSF) and slurried silica fume (SSF) is illustrated. SSF improves the pore structure and diffusion properties of pastes compared to DSF. Adding SSF increases the total porosity but refines pores and decreases diffusion. Diffusion coefficients increase linearly with w/b ratio for pastes with and without SF. A relationship was found between diffusion coefficients and critical pore radius.