The effect of recycled concrete aggregate properties on the bond strength between RCA concrete and steel reinforcement

被引：361

作者：

Butler, L. ^{[1
]}

West, J. S. ^{[1
]}

Tighe, S. L. ^{[1
]}

机构：

[1] Univ Waterloo, Fac Engn, Dept Civil & Environm Engn, Waterloo, ON N2L 3G1, Canada

来源：

CEMENT AND CONCRETE RESEARCH | 2011年 / 41卷 / 10期

关键词：

Mechanical properties (C); Mixture proportioning (A); Aggregate (D); Bond strength(C); Recycled aggregate concrete; MECHANICAL-PROPERTIES; BEHAVIOR; BARS;

D O I：

10.1016/j.cemconres.2011.06.004

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The purpose of this study was to investigate the influence that replacing natural coarse aggregate with recycled concrete aggregate (RCA) has on concrete bond strength with reinforcing steel. Two sources of RCA were used along with one natural aggregate source. Numerous aggregate properties were measured for all aggregate sources. Two types of concrete mixture proportions were developed replacing 100% of the natural aggregate with RCA. The first type maintained the same water-cement ratios while the second type was designed to achieve the same compressive strengths. Beam-end specimens were tested to determine the relative bond strength of RCA and natural aggregate concrete. On average, natural aggregate concrete specimens had bond strengths that were 9 to 19% higher than the equivalent RCA specimens. Bond strength and the aggregate crushing value seemed to correlate well for all concrete types. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：1037 / 1049

页数：13

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