A novel waterproof, fast setting and high early strength repair material derived from metakaolin geopolymer

被引：90
作者：
Duan, Ping [1 ,2 ,3 ]
Yan, Chunjie [1 ,2 ,3 ]
Luo, Wenjun [1 ]
机构：
[1] China Univ Geosci, Fac Mat Sci & Chem, Wuhan 430074, Peoples R China
[2] China Univ Geosci, Minist Educ, Engn Res Ctr Nanogeomat, Wuhan 430074, Peoples R China
[3] China Univ Geosci, Zhejiang Res Inst, Hangzhou 311305, Zhejiang, Peoples R China
来源：
CONSTRUCTION AND BUILDING MATERIALS | 2016年 / 124卷
基金：
中国博士后科学基金;
关键词：
Geopolymer; Waterproof; Metakaolin; Repair; POTENTIAL APPLICATION; PROTECTION COATINGS; CONCRETE; MORTAR; CEMENT;
D O I：
10.1016/j.conbuildmat.2016.07.058
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
In this work, a novel waterproof, fast setting geopolymer repair material with hydrophobic surface and high compressive strength and bonding strength was proposed. The experimental results showed that surface hydrophobic modification was completely achieved due to the increasing contact angle on the surface of geopolymer from 21 to 122, the floating of specimens on the water surface and low water adsorption of about 0.5% after 28 days of exposure. This newly developed geopolymer repair material has short setting time of 24 min, high flow of 212 mm and high early compressive strength and bonding strength of the interfacial bonding zone as indicated by the dense microstructure. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：69 / 73
页数：5
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