混凝土电通量与抗蚀系数及抗盐结晶侵蚀系数的相关性分析  

Correlation analysis about concrete flux and resist corrosion coefficient and resist erosion of salt crystallization coefficient

作　　者：黄星 黄维蓉[2] 余平 

机构地区：[1]重庆通洋公路工程有限公司,重庆400067 [2]庆交通大学山区道路结构与材料重庆市重点实验室,重庆400074 [3]安徽省科兴交通建设工程监理有限公司,安徽合肥230051

出　　处：《混凝土》2011年第8期34-36,共3页Concrete

基　　金：西藏交通厅科技攻关项目(2008005)

摘　　要：通过对多元矿物掺合料、引气剂及聚丙烯纤维复掺混凝土的耐久性试验研究,分析"控制pH值流动循环溶液侵蚀"和"不控制pH值静止溶液侵蚀"两种侵蚀方法下混凝土的抗硫酸盐侵蚀及抗干湿循环性能。试验结果表明多元矿物掺合料复掺对混凝土抗硫酸盐侵蚀及抗干湿循环性能有良好的改善效果;在某一范围内,混凝土抗硫酸盐侵蚀及抗干湿循环性能随引气剂和聚丙烯纤维掺量的增加而增强;混凝土6 h电通量与混凝土抗蚀系数及抗盐结晶侵蚀系数间有较好的相关性,均可作为评价混凝土耐久性的指标。Through the durability test research on multiple mineral admixtures,air entraining agent and polypropylene fiber re-mixed concrete,analysis under this two erosion methods：＂Control of solution pH value of the current erosion cycle＂and＂Do not control the pH value of the sta-tionary solution attack＂Sulphate resistance and anti-dry cycle performance of concrete.The test results show that multiple complex mixed mineral admixtures has a good improvement effect on sulfate resistance and wet and dry cycle performance of concrete;in a range resistance to sulfate at-tack and anti-wet cycling performance of concrete increased with air entraining agent and polypropylene fiber content increase;A good correlation between concrete 6 hours of electric flux,salt corrosion coefficient and concrete erosion coefficient of crystalline,may be an indicator for evaluat-ing the durability of concrete.

关 键 词：硫酸盐侵蚀 干湿循环 多元矿物掺合料 引气剂 聚丙烯纤维 

分 类 号：TU528.01[建筑科学—建筑技术科学]