外加剂对硫铝酸盐水泥的影响  

Influence of Admixtures on Sulfoaluminat Concrete Structure and Performance

作　　者：张德成[1] 肖传明[2] 张云飞[2] 程新[1] 

机构地区：[1]武汉理工大学材料学院,武汉430070 [2]济南大学材料科学与工程学院,济南250022

出　　处：《硅酸盐通报》2007年第4期816-820,共5页Bulletin of the Chinese Ceramic Society

基　　金：济南市科技攻关计划(编号051085);山东省博士基金(编号2005bs04005)

摘　　要：针对硫铝酸盐水泥混凝土塌落度损失大、凝结时间不易控制以及浆体不均匀等问题,通过净浆、砂浆试验研究了缓凝剂、减水剂和复合掺合料对硫铝酸盐水泥浆体的凝结时间、浆体流动度及早期、后期强度的影响。结果表明:适当掺量缓凝剂可以有效的控制混凝土塌落度损失、改善施工性能,并可适当提高硬化浆体强度;恰当掺量的减水剂可以在不影响浆体硬化强度的基础上大大提高其流动性;合适比例的粉煤灰和矿渣复掺有利于后期强度的增长并改善其微观结构。There exist many problems in sulfoaluminate concrete, such as slump loss, setting time and paste non-homogeneous etc. Compared with the influence of retarder, mineral admixture and superplasticizer to the setting time, fluidity and＇ compressive strength of SAC by paste and mortar experiment. The result shows that with appropriate amounts of retarder, the slump loss, workability and strength of the concrete can be improved. And the appropriate amounts of superplasticizer can improve the fluidity of paste, which has less influence on the compressive strength. The suitable ratio of fly ash and slag is advantage to the later strength increasing and improving microstructure.

关 键 词：硫铝酸盐水泥 复合掺合料 缓凝剂 

分 类 号：TQ172[化学工程—水泥工业]