机制砂砂浆开裂敏感性评价指标探讨  

Discussion on Evaluation Index of Cracking Sensitivity of Manufactured-sand Mortar

作　　者：胡晓曼[1,2] 董献国[1,2] 

机构地区：[1]安徽省.水利部淮河水利委员会水利科学研究院,蚌埠233000 [2]安徽省建筑工程质量监督检测站,合肥230088

出　　处：《混凝土与水泥制品》2015年第2期25-28,共4页China Concrete and Cement Products

摘　　要：通过ISO标准砂与机制砂椭圆环开裂时间测试以及干缩与质量损失关系的分析,提出评价砂浆开裂敏感性的指标,即砂浆初始开裂时间和干缩-质量损失率双参数法,这不仅适用于河砂砂浆开裂敏感性的判定,对机制砂砂浆亦同样有效。Through the testing of ellipse-ring cracking time on river-sand and manufactured- sand mortar, and the analysis of relationship between dry shrinkage and mass loss, the index is put forward to elevate the cracking sensitivity of mortar, namely the double parameter method of initial cracking time and dry shrinkage-mass loss rate, which is not only suitable for river-sand mortar to determine cracking sensitivity of mortar, but also manufactured-sand mortar is equally effective.

关 键 词：机制砂砂浆 开裂敏感性 开裂时间 干缩-质量损失 

分 类 号：TQ177.6[化学工程—硅酸盐工业]