Bond performance of deformed steel bars in concrete produced with coarse recycled concrete aggregate

被引：41

作者：

Fathifazl, Gholamreza ^{[1
,2
]}

Razaqpur, A. Ghani ^{[3
]}

Isgor, O. Burkan ^{[2
]}

Abbas, Abdelgadir ^{[2
,4
]}

Fournier, Benoit ^{[5
,6
]}

Foo, Simon ^{[7
]}

机构：

[1] Adjeleian Allen Rubeli Ltd, Ottawa, ON K1P 5E7, Canada

[2] Carleton Univ, Dept Civil & Environm Engn, Ottawa, ON K1S 5B6, Canada

[3] McMaster Univ, Dept Civil Engn, Hamilton, ON L8S 4L8, Canada

[4] Amec Amer, Calgary, AB T2P 3W3, Canada

[5] Univ Laval, Dept Geol & Geol Engn, Laval, PQ G1V 0A6, Canada

[6] CANMET MTL, Ottawa, ON K1A 0G1, Canada

[7] Publ Works & Govt Serv Canada, Gatineau, PQ K1A 0S5, Canada

来源：

CANADIAN JOURNAL OF CIVIL ENGINEERING | 2012年 / 39卷 / 02期

基金：

加拿大自然科学与工程研究理事会;

关键词：

beam-end bond strength; development length; mix proportioning; recycled concrete; deformed steel reinforcement; SUBSTITUTION;

D O I：

10.1139/L11-120

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Results of an experimental study on the bond performance of deformed steel rebars in concrete made with coarse recycled concrete aggregate (RCA) are presented. The distinctive feature of the study is the new mix proportioning method for RCA concrete that results in the strength to elastic modulus ratio (f'(c)/E-c) similar to a conventional concrete having the same amount of total mortar and coarse aggregate. In this method, the properties and volume fractions of natural aggregate and residual mortar in RCA are quantitatively included as part of the total aggregate and total mortar content of the RCA concrete. Twelve beam-end bond specimens were prepared and tested according to ASTM A944-99 standard. The test variables comprised mix proportioning method, bar size, and aggregate type. The results showed that the bond strength between the reinforcing steel bars and the RCA concrete proportioned by the new method is comparable to their bond strength with regular concrete but 18% to 33% higher than their strength with RCA concrete proportioned by conventional methods.

引用

页码：128 / 139

页数：12

共 26 条

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