集料特性对改性薄层砂浆早期失水规律影响的研究  

Research on water-loss laws at early age of modifying thin layer mortar on aggregate properities

作　　者：邓嫔[1] 蹇守卫[2] 郅真真 孔维 何桂海 孙孟琪[2] 

机构地区：[1]中国建筑材料集团有限公司,北京100036 [2]武汉理工大学硅酸盐建筑材料国家重点实验室,湖北武汉430070 [3]中交武汉港湾工程设计研究院有限公司,湖北武汉430040

出　　处：《砖瓦》2015年第10期8-11,共4页Brick-tile

基　　金："十二五"国家科技支撑计划(2011BAJ04B01)

摘　　要：利用改进过的滤纸法和环境模拟法,系统研究了砂子粒径、砂浆厚度对水泥砂浆早期失水率的影响规律。研究结果表明:砂子粒径对砂浆失水率的影响因砂浆物理状态不同而有所差别;砂浆失水率随砂浆厚度的增大有所增加。Dehydration is the main reason causing early plastic shrinkage of thin mortar. In this paper, Using im?proved filter paper and environmental simulation method to study the influence of the sand particle size and the thickness of the cement mortar on the mortar rate of early period water loss. The results show that:the impact of mor?tar sand particle size on the rate of water loss changed with the different mortar physical state;mortar dehydration rate increased with the thickness of the mortar increasing.

关 键 词：纤维素醚 水泥砂浆 砂子粒径 水化速率 

分 类 号：TU578.1[建筑科学—建筑技术科学]