Local bond strength of vitreous enamel coated rebar to concrete

被引：33
|
作者：
Wu, Chenglin [1 ]
Chen, Genda [1 ]
Volz, Jeffery S. [1 ]
Brow, Richard K. [2 ]
Koenigstein, Michael L. [3 ]
机构：
[1] Missouri Univ Sci & Technol, Dept Civil Architectural & Environm Engn, Rolla, MO 65409 USA
[2] Missouri Univ Sci & Technol, Dept Mat Sci & Engn, Rolla, MO 65409 USA
[3] Properma Engn Coatings, Rolla, MO 65401 USA
来源：
CONSTRUCTION AND BUILDING MATERIALS | 2012年 / 35卷
基金：
美国国家科学基金会;
关键词：
Vitreous enamel coated rebar; Rebar-to-concrete bond; Normal strength concrete; Pullout test;
D O I：
10.1016/j.conbuildmat.2012.04.067
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
In this paper, the bond strength between vitreous enamel coated rebar and concrete is characterized through testing of 96 pullout cylinder specimens. Key parameters investigated include rebar diameter, coating condition, confinement condition, concrete cover-to-rebar diameter ratio, and concrete strength. The unconfined and confined cylinders fail in concrete splitting with crushing zones distributed at rib fronts and concrete splitting plus shearing off, respectively. The enamel coating reduces the crushing angle and increases the crushing length of concrete. Within the test ranges of various parameters, the overall increase in bond strength of the enamel coated rebar in normal concrete is approximately 15%. Confinement or reduction of rebar size can increase the effect of enamel coating on the bond strength by 2-4%. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：428 / 439
页数：12
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