Influence of hydrochloric acid etching on bond strength between concrete substrate and repair materials
- 作者：Xiong ; Guangjing ; Cui ; Yuqing ; Chen ; Liqiang ; Jiang ; Hao
- 关键词：Interface zone ; Etching ; Micro-roughness ; Specific surface ; Bond strength
- 刊名：Cement and Concrete Composites
- 出版年：2004
- 期刊代码：11_09589465
- 类别：ms
- 出版时间：January, 2004
- 卷：26
- 期：1
- 页码：41-45
- 文件大小：380 K
摘要
A comparison of experimental research into the influence of etching concrete substrate on bond strength between concrete substrate and repair materials was carried out. The test results showed that washing a concrete substrate with a hydrochloric acid solution with an appropriate consistency for a suitable period, resulted in a significant increase of the number of 10–50 μm pores, micro-cracks and a reduction in fine sand particles, leading to a noticeable increase in micro- and fine roughness of the concrete substrate. As a result, the bond strength between concrete substrate and repair materials obtained a noticeable increase.