Effect of the combination of fly ash and silica fume on water resistance of Magnesium-Potassium Phosphate Cement

被引：166

作者：

Zheng, Deng-Deng ^{[1
]}

Ji, Tao ^{[1
]}

Wang, Can-Qiang ^{[1
]}

Sun, Chun-Jing ^{[1
]}

Lin, Xu-Jian ^{[1
]}

Hossain, Khandaker Muhammed Anwar ^{[1
,2
]}

机构：

[1] Fuzhou Univ, Coll Civil Engn, Fuzhou 350116, Fujian Province, Peoples R China

[2] Ryerson Univ, Dept Civil Engn, Toronto, ON M5B 2K3, Canada

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2016年 / 106卷

关键词：

Magnesium-Potassium Phosphate Cement; Fly ash; Silica fume; Water resistance; Strength retention ratio; RAPID REPAIR; CONCRETE;

D O I：

10.1016/j.conbuildmat.2015.12.085

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The effect of the combination of fly ash and silica fume on the water resistance of Magnesium-Potassium Phosphate Cement (MKPC) was investigated, and the improvement mechanism was discussed based on the micro-analysis of XRD, FSEM and pore structure. The results indicate that, the physical effect of the combination of fly ash and silica fume on MKPC is dominated compared with the chemical effect because of the optimization of pore structure. The combination of fly ash and silica fume leads to higher density and later-age compressive strength of MKPCs compared to those without fly ash and silica fume under air curing and water curing, respectively. The strength retention ratios (namely water resistance) of MKPCs with the combination of fly ash and silica fume at 56 days are found to be significantly higher than those without fly ash and silica fume. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：415 / 421

页数：7

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