Influence of temperature and carbonation of concrete on rate of corrosion of reinforcing bar in concrete containing chloride ion

被引：0

作者：

Kakegawa, Masaru ^{[1
]}

Masuda, Yoshihiro ^{[2
]}

Matsubayashi, Yuji ^{[1
]}

Kage, Tadatsugu ^{[3
]}

机构：

[1] R and D Lab., Taiheiyo Materials Corporation

[2] Dept. of Design and Engineering for Global Environment, Utsunomiya University

来源：

Journal of Structural and Construction Engineering | 2012年 / 77卷 / 682期

关键词：

Accelerated test; Carbonation; Corrosion loss; Rate of corrosion; Sodium chloride content; Water- cement ratio;

D O I：

10.3130/aijs.77.1809

中图分类号：

学科分类号：

摘要：

This paper reports the results of accelerated test (20°C, 40°C, 60°C and 80°C , moist condition) on the rate of corrosion of reinforcing bar in concrete which contains chloride ion. The factor of experiment are sodium chloride content (0∼1.0%/sand), water-cement ratio (50∼65%), and thickness of concrete cover (10∼30mm). It is concluded as follows, The corrosion loss of reinforcing bar in accelerated test increases in proportion to square root of test period. Rate of corrosion of reinforcing bar in carbonated concrete containing sodium chloride is larger than the rate of corrosion of reinforcing bar in un-carbonated concrete containing sodium chloride. The estimation equation of the rate of corrosion of reinforcing bar in concrete are proposed by sodium chloride content and water- cement ratio.

引用

页码：1809 / 1818

页数：9