Study on High Temperature Performance of Shield Tunnel Segment Concrete Containing Mineral Additive
MA Bao-guo,MU Song,GAO Ying-li,WANG Yao-cheng
DOI:10.11835/j.issn.1674-4764.2008.01.031
Received June 30, 2007,Revised September 30, 2007, Accepted , Available online July 01, 2015
Volume ,2008,Pages 125-128135
- Abstract
Through many tests and standard analysis, the effects of solution concentration and temperature on rate of concrete sulfate attack were investigated. The test results show that when solution concentration and temperature are lower than certain value, the speed of attack is accelerated with increasing concentration and temperature, however, higher temperature and concentration of solution may decrease the rate of attack. The speed of attack of sodium sulfate is faster than the one of attack of magnesium sulfate under various factors. It is suitable to adopt the coefficient of tensile as the accelerated assessing criterion for the attack of sodium sulfate. The coefficient of tensile and compressive strength should be considered together for the attack of magnesium sulfate.