矿物掺合料和水胶比对混凝土抗硫酸盐侵蚀性能的影响  

The Effect of Mineral Admixture and Water-binder Ratio on Concrete to Sulphate Attack

作　　者：岳公冰[1] 孙同春 李秋义[1] 卜小霞[1] 

机构地区：[1]青岛理工大学土木工程学院,山东青岛266033 [2]青岛市建筑工程质量监督站,山东青岛266071

出　　处：《中国包装科技博览（混凝土技术）》2012年第7期10-13,共4页China Science and Technology Review

摘　　要：本实验采用硅酸盐水泥、粉煤灰、S95矿粉和聚羧酸高效减水剂，通过单掺粉煤灰、粉煤灰和S95矿粉（1：1）复掺制备出多系列混凝土，系统研究矿物掺合料和水胶比对混凝土抗硫酸盐侵蚀性能的影响。研究结果表明，采用高效减水剂和矿物掺合料配制的高性能混凝土抗硫酸盐侵蚀均达到KS150等级，其中水胶比对混凝土抗硫酸盐侵蚀性能影响显著，经150次干湿循环，水胶比为0．36的混凝土耐蚀系数为97．71％，水胶比为0．28的耐蚀系数为108．11％。The experiment prepared a series of concrete by Portland cement, flyash and S95 mineral powder and Polycarboxylate superplasticizer, through only mixing flyash and fly ash and S95 powdered ore （ 1 ： 1 ） combined, systematacially studying the effect of mineral admixture and water-binder ratio on concrete to sulphate attack. The study results indicates that the sulphate-corrosion resistance of high performance concrete prepared by superplasticizer and mineral admixtures all reached KS150 level, the effect of water-binder ratio was appreciable specially. After withstanding 150 times of dry-wet cycle, the concrete corrosion resistance coefficient of water-binder ratio of 0.36 was 97.71% while corrosion resistant coefficient of water-binder ratio of 0.28 was 108.11%.

关 键 词：混凝土 矿物掺合料 硫酸盐侵蚀 耐蚀系数 

分 类 号：TU528.31[建筑科学—建筑技术科学]