Experimental test of corrosion-induced concrete cover cracking pattern

被引：1
作者：
Niu, Ditao [1 ]
Song, Hua [2 ]
机构：
[1] Xian Univ Architecture & Technol, Minist Educ, Key Lab Seism & Struct Engn, Xian 710055, Peoples R China
[2] Qingdao Univ Technol, Sch Civil Engn, Qingdao 266033, Peoples R China
来源：
SUSTAINABLE DEVELOPMENT OF URBAN ENVIRONMENT AND BUILDING MATERIAL, PTS 1-4 | 2012年 / 374-377卷
关键词：
concrete cover; corrosion induced cracking; cracking pattern; electrochemical acceleration; REINFORCEMENT CORROSION;
D O I：
10.4028/www.scientific.net/AMR.374-377.1969
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
The study of cover cracking pattern can provide scientific basis for the durability assessment and maintanence of concrete structures. In this paper, corrosion induced cover cracking pattern was investigated by accelerated corrosion test. The cover thickness c, bar diameter d and bar spacing s were considered in the test. Test results showed that the cracking pattern of cover concrete mainly included four typies, that is longitudinal cracks including wedge and vertical, parallel cracks, spalling and delamination. When the bar spacing was small enough, the delamination of cover concrete occurred which had nothing to do with the ratio c/d. When c/d <= 1, the corrosion of side bar mainly induced the vertical cracks and the corrosion of corner bar induced both vertical and wedge cracks. While c/d>l, the corrosion of corner bar mainly induced wedge cracks.
引用
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页码：1969 / +
页数：2
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