丙烯酸钙改性集料对砂浆性能影响的研究  

Effects Study of Calcium Acrylate Modified Aggregate on Performances of Mortar

作　　者：石运中[1] 王琦[1] 贾丽莉[1] 

机构地区：[1]济南大学材料科学与工程学院,250022

出　　处：《混凝土与水泥制品》2011年第9期25-27,共3页China Concrete and Cement Products

基　　金：山东省自然科学基金(ZR2010EM057);山东省高等学校科技计划项目(J10LD06)

摘　　要：通过对集料表面包覆丙烯酸钙及水泥,使集料和水泥浆体之间形成连接紧密且有一定强度的界面过渡区,来改善原有的集料-水泥浆体界面薄弱区。研究发现,丙烯酸钙的掺入可以改善界面过渡区的力学性能和抗蚀性能,当丙烯酸钙的包覆量为0.5%时1d抗折强度提高了71.75%,28d抗压强度提高了13.44%;当丙烯酸钙包覆量为2.0%时抗蚀系数提高到了1.184。Through coating calcium acrylate and cement on the surface of aggregates,the compact interface transition zone with certain strength is formed between aggregates and cement pastes to improve the former weak interface transition zone.The results indicate that adding calcium acrylate can not only optimize the mechanical property but also improve the corrosion resistance of interface transition zone.When the content of calcium acrylate is 0.5%,the flexural strength of 1 day can improve 71.75% and compressive strength of 28 days can improve 13.44%.When the content of calcium acrylate is 2.0%,the corrosion resistance coefficient can rise to 1.184.

关 键 词：集料改性 丙烯酸钙 界面过渡区 抗蚀性能 

分 类 号：TU528[建筑科学—建筑技术科学]