Comparison of methods for evaluating bond strength between concrete substrate and repair materials

被引：379

作者：

Momayez, A

Ehsani, MR ^{[1
]}

Ramezanianpour, AA

Rajaie, H

机构：

[1] Univ Arizona, Dept Civil Engn & Engn Mech, Tucson, AZ 85721 USA

[2] Amirkabir Univ Technol, Dept Civil Engn, Tehran, Iran

来源：

CEMENT AND CONCRETE RESEARCH | 2005年 / 35卷 / 04期

关键词：

bond strength; surface layer; tensile properties; silica fume; concrete;

D O I：

10.1016/j.cemconres.2004.05.027

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This investigation was aimed at studying the effect of test methods on bond strength between concrete substrate and repair material. Four test methods with cementitious or modified-cementitious repair materials, and two surface roughnesses were studied. The methods used were pull-off, slant shear, splitting prism and a new direct shear named Bi-Surface shear test. While the coefficient of variation (COV) for each type of test was acceptable, the bond strengths from some tests were up to eight times larger than those obtained from others. It is imperative that the bond tests be selected such that they represent the state of stress the structure is subjected to in the field. The new test method was easy to carry out and had reasonable results and can be developed by further investigations. (c) 2004 Elsevier Ltd. All rights reserved.

引用

页码：748 / 757

页数：10