Surface Modifying of Copper-Plated Steel Fibers and Its Corrosion Resistance and Bond Behavior with Cement Mortar

被引：0
作者：
Zhong S. [1 ]
Fu J. [1 ]
机构：
[1] Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education, Tongji University, Shanghai
来源：
Jianzhu Cailiao Xuebao/Journal of Building Materials | 2019年 / 22卷 / 04期
关键词：
Bond strength; Cement mortar; Chemical bonding; Copper-plated steel fiber; Corrosion resistance; Silane coupling agent; Surface treatment;
D O I：
10.3969/j.issn.1007-9629.2019.04.015
中图分类号：
学科分类号：
摘要：
In order to improve the bond strength between copper-plated steel fibers and cement motar and enhance the corrosion resistance of fibers, the fibers were treated with silane coupling agents 3-methacryloxy-propyl-trimethoxy-silane(MPS) and 3-mercapto-propyl-trimethoxy-silane(MPTS),and the fibers were tested with infrared spectrum, scanning electron microscope(SEM), corrosion in NaCl solution and single fiber pull-out experiments. The results indicate that the MPTS is chemically bonded to the fibers; the surface roughness of the fibers treated with coupling agents is greatly improved; the integration of absorbance of the NaCl solutions in which MPS fibers and MPTS/MPS fibers are soaked is only 91% and 45% of that of the untreated fibers; the treatment of the agents greatly enhances the energy demanded for MPS fibers and MPTS/MPS fibers to be pulled out of the cement mortar with an increase of 43% and 224% respectively in comparison with the untreated fibers, as well as enhances the bond strength between fibers and cement mortar. © 2019, Editorial Department of Journal of Building Materials. All right reserved.
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页码：606 / 610
页数：4
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