Influence of freeze-thaw cycles on properties of asphalt-modified epoxy repair materials

被引:33
作者
Wang, Yanping [1 ,2 ]
Ye, Jiaofeng [2 ]
Liu, Yanhua [2 ]
Qiang, Xiaohu [2 ]
Feng, Libang [1 ,2 ]
机构
[1] Lanzhou Jiaotong Univ, Key Lab Rd Bridge & Underground Engn Gansu Prov, Lanzhou 730070, Peoples R China
[2] Lanzhou Jiaotong Univ, Sch Mechatron Engn, Lanzhou 730070, Peoples R China
基金
中国国家自然科学基金;
关键词
Epoxy resin; Asphalt; Freeze-thaw resistance; Water resistance; Chemical resistance; COMPOSITE; BEHAVIOR; PERFORMANCE; COATINGS; STEEL; FTIR;
D O I
10.1016/j.conbuildmat.2012.12.056
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
A high performance repair materials for concrete is prepared using epoxy resin as a base resin and asphalt as a modifier, respectively. The influence of the asphalt content, freeze-thaw circles, and chemicals on the structure and properties of the repair materials is investigated in detail in this work. Results show that the epoxy repair materials modified with 10 phr of asphalt has the excellent mechanical property, and the compressive strength and tensile shear strength can reach 56.6 MPa and 5.9 MPa, respectively. The compressive strength further increases while the weight change for all samples is below I wt% when the repair materials suffer 30 freeze-thaw circles and chemicals soakage at 80 degrees C for 2 weeks, indicating that the asphalt-modified epoxy repair materials have the outstanding water, acid, and alkaline resistance and salt tolerance. Therefore, a kind of asphalt-modified epoxy repair materials with excellent freeze-thaw resistance is developed in this research. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码:580 / 585
页数:6
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