掺合料对混凝土抗硫酸盐侵蚀性能的影响  

Influences brought by admixtures to the sulfate corrosion of concrete

作　　者：刘俊[1] 牛荻涛[1] 宋华[1] 

机构地区：[1]西安建筑科技大学土木工程学院,陕西西安710055

出　　处：《混凝土》2014年第3期79-83,共5页Concrete

基　　金：国家杰出青年科学基金(50725824);"十一五"国家科技支撑计划课题(2006BAJ03A02-03)

摘　　要：在普通混凝土中单独或复合掺入粉煤灰、矿渣和硅灰,配制出不同种类掺合料混凝土试块,进行若干次干湿循环硫酸盐侵蚀试验后,通过对试块外观变化的记录,质量损失、抗压强度、饱和面吸水率的测试,考察和研究不同掺合料对混凝土抗硫酸盐侵蚀性能的影响。结果表明:多种掺合料合理配合使用,能明显提高混凝土抗硫硫酸盐侵蚀性能。By adding fly ash, slag and silica fume into concrete solely or multiply different types of test blocks are prepared for the wet- ting-drying cycles experiment in the condition of sulfate corrosion.In associate with the changes happened on the surface of these test blocks,their mass loss, compressive strength loss and water absorption of the saturated surface will be tested to study the infulences brought by different admixtures on the sulfate corrosion of concrete.The test leads to the conclusion that by suitably employing the proportion of multiple admixtures, the durability of concrete under sulfate corrosive environment can be enhanced greatly.

关 键 词：掺合料 混凝土 硫酸盐侵蚀 干湿交替 SEM 

分 类 号：TU528.041[建筑科学—建筑技术科学]