风积沙掺量对水泥砂浆力学性能和微观结构的影响  

Influence of Aeolian Sand Dosage on Mechanical Property and Microstructure of Cement Mortar

作　　者：何静[1] 申向东[1] 董伟[1] 秦淑芳[1] 高矗 俞婷婷[1] 

机构地区：[1]内蒙古农业大学水利与土木建筑工程学院,呼和浩特010018

出　　处：《硅酸盐通报》2015年第9期2609-2613,共5页Bulletin of the Chinese Ceramic Society

基　　金：高等学校博士学科点专项科研基金(20121515110002);内蒙古自治区应用与研究开发科技计划项目(20130425);内蒙古自治区自然科学基金项目(2013MS0720)

摘　　要：以普通砂作为细骨料,通过内掺风积沙替代同等质量的普通砂配制水泥砂浆,研究不同掺量风积沙对水泥砂浆各龄期抗压强度的影响,并借助电镜扫描仪细致观察水泥砂浆微观形态结构。结果表明:风积沙掺量为15%时,风积沙水泥砂浆各龄期力学性能较优;风积沙可加速水泥早期水化,提高水泥石基体密实度。With natural river sand as fine aggregate, by mixing different mass fraction of aeolian sand to replace the same weight of river sand to configure cement mortar, the influence of the different dosage of aeolian sand on the cement mortar compressive strength was studied. The microstructure of cement mortar was analysed with the aid of scanning electron microscope. The experimental results show that mechanical properties of the cement mortar can be largely improvedby mixing 15% mass fraction of aeolian sand. Aeolian sand can accelerate the early hydration of cement, increase cement matrix compactness.

关 键 词：水泥砂浆 风积沙 力学性能 微观结构 

分 类 号：TQ172[化学工程—水泥工业]