不同水灰比水泥硬化浆体受软水溶蚀作用后的微结构变化差异  

Difference between microstructure variation of hardened cement pastes with different water-to-cement ratios leached by soft water

作　　者：刘仍光[1,2] 王强[1] 阎培渝[1] 唐爱民[3] 

机构地区：[1]清华大学土木工程系,北京100084 [2]青岛农业大学建筑工程学院,山东青岛266109 [3]中国建筑股份有限公司,北京100000

出　　处：《混凝土》2012年第12期9-10,14,共3页Concrete

摘　　要：利用MIP、TGA等试验方法对不同水灰比的水泥硬化浆体在软水溶蚀作用下进行研究。结果表明:水泥硬化浆体遭受软水溶蚀后,表现出一定程度的质量损失和微观结构劣化。而低较水灰比的水泥硬化浆体抗软水溶蚀的能力明显强于高水灰比的水泥硬化浆体。高水灰比的水泥硬化浆体在软水溶蚀作用下的质量损失大、Ca(OH)2含量降低快、孔结构劣化明显。The hardened cement pastes leached by soft water were investigated by MIP and TGA.The results showed that the mass of hardened pastes reduced and its microstructure deteriorates after leaching of soft water.The results showed that cement hardened paste with high water-to-ce- ment ratio had a weaker ability to resist leaching than cement hardened paste with low water-to-cement ratio.The cement hardened paste with high water-to-cement ratio after leached showed a great mass and Ca（OH ）2 content loss, and obvious pore structure deterioration.

关 键 词：水灰比 硬化浆体 溶蚀 氢氧化钙 孔结构 

分 类 号：TU528.062[建筑科学—建筑技术科学]