Property and microstructure of aluminosilicate inorganic coating for concrete: Role of water to solid ratio

被引：37

作者：

Mu Song ^{[1
,2
]}

Liu Jiaping ^{[2
]}

Lin Wei ^{[1
,2
]}

Wang Yaocheng ^{[3
]}

Liu Jianzhong ^{[2
]}

Shi Liang ^{[1
,2
]}

Jiang Qian ^{[1
,2
]}

机构：

[1] Jiangsu Res Inst Bldg Sci, State Key Lab High Performance Civil Engn Mat, Nanjing 211103, Jiangsu, Peoples R China

[2] Jiangsu SOBUTE New Mat Co Ltd, Nanjing 211103, Jiangsu, Peoples R China

[3] Shenzhen Univ, Shenzhen Key Lab Civil Engn Durabil, Shenzhen 518060, Peoples R China

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2017年 / 148卷

基金：

中国国家自然科学基金;

关键词：

Inorganic coating; Metakaolin; Geopolymer; Water to solid ratio; Property; Microstructure; Mechanism; FLY-ASH; CORROSION-RESISTANCE; ACTIVATOR RATIOS; TO-LIQUID; GEOPOLYMERS; METAKAOLIN; DURABILITY; SHRINKAGE;

D O I：

10.1016/j.conbuildmat.2017.05.070

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

As a potential matrix of inorganic coating, aluminosilicate geopolymer has excellent properties of low Volatile Organic Compounds (VOC) emission, anticorrosion and long life. However, little concern has been devoted to basic parameters of the aluminosilicate geopolymer coating. The present paper investigated the influence of water to solid ratio on the property and microstructure of the coating. Results showed that as the water to solid ratio of geopolymer coating increased from 0.8 to 1.0, the hardening process was delayed significantly. The variation of autogenous shrinkage differed from that of drying shrinkage. The overall porosity measured by Mercury Intrusion Porosimetry (MIP) decreased, while a dramatic increased volume of pores with the size of 30-50 nm was detected. Besides, the Fourier Transform Infrared Spectroscopy (FTIR) results indicated that polycondensation degree was affected in an inverse manner at early and late ages of geopolymer hardening. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：846 / 856

页数：11

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