疏水剂对水泥浆体早期水化和吸水性能的影响  

Effects of Water Repellent on the Early Hydration of Cement Paste and Water Absorption Properties

作　　者：黄平[1] 何真[2] 王宽[2] 

机构地区：[1]四川乐山职业技术学院材料系,乐山614000 [2]武汉大学水资源与水电工程科学国家重点实验室,武汉430072

出　　处：《武汉理工大学学报》2010年第15期30-34,共5页Journal of Wuhan University of Technology

基　　金：国家自然科学基金(50972109);教育部博导基金(20090141110021)

摘　　要：利用不同材料体系的电阻率随时间变化关系和吸水率实验,研究了掺入疏水剂后水泥基材料的微结构形成与疏水特性。结果表明掺入疏水剂后会使水泥基材料的抗折强度与强度随掺量增加而降低,掺入疏水剂很好的改善了水泥胶砂和FA胶砂早期的吸水性能。显示2种疏水剂内掺后对浆体早期水化过程和吸水性能将产生不同影响。The relationship between resistivity of various materials systems and water absorption was analyzed,and the microstructure and hydrophobicity of a cement-matrix material were investigated.The results show that,after the water repellent is added,the flexual strength and the compressive strength of the material decrease,however,the water absorption of cement paste and FA paste is improved,revealing that adding two kinds of water repellents has different effects on the early hydration process and water absorption.

关 键 词：水泥 疏水剂 强度 吸水率 电阻率 

分 类 号：TU528[建筑科学—建筑技术科学]