复合激发剂对大掺量粉煤灰水泥砂浆早期力学性能的影响  

Effects of compound activators on the early mechanical properties of cement mortar incorporating large volume of fly ash

作　　者：吴纯超[1,2] 杨海龙[1,2] 孔祥明[1,2] 宋常友 胡永腾 

机构地区：[1]清华大学土木工程系,北京100084 [2]清华大学土木工程安全与耐久教育部重点实验室,北京100084 [3]北京振利高新技术有限公司,北京100073

出　　处：《混凝土》2010年第8期110-112,共3页Concrete

基　　金：国家"十一五"科技支撑计划资助项目(2006BAJ05B03)

摘　　要：以硫酸钠(Na2SO4)和熟石灰(Ca(OH)2)作为粉煤灰的复合激发剂,研究了激发剂对大掺量粉煤灰水泥砂浆早期力学性能的影响。结果表明:随复合激发剂添加量的增加,大掺量粉煤灰水泥砂浆的早期力学性能变好,而随粉煤灰含量的增大,早期力学性能变差,但抗折强度较抗压强度下降缓慢,并且激发剂作用更加明显。The effects of compound activator,which consists of Na2SO4 and Ca（OH）2,on the early mechanical properties of cement mortar incorporating large volume of fly ash were investigated.The test results indicated that the early mechanical properties of cement mortar incorporating large volume of fly ash get better with increasing compound activator,and they get worse and the effects of compound activator become more pronounced with increasing volume of fly ash,but the decrease of flexural strength is slower that of compressive strength.

关 键 词：复合激发剂 粉煤灰 水泥砂浆 早期力学性能 

分 类 号：TU528.042[建筑科学—建筑技术科学]