化学外加剂对陈积粉煤灰加气混凝土活性激发的研究  

Study on activity of sedimentary fly ash aerated concrete with chemical admixture

作　　者：杨冬升[1] 陈燕菲[1] 谢礼兰[1] 黄和维 赵玉印 黄言佳 

机构地区：[1]贵州师范大学材料与建筑工程学院,贵州贵阳550001

出　　处：《新型建筑材料》2017年第12期140-142,共3页New Building Materials

基　　金：贵州省科技厅-贵州师范大学联合基金项目[黔科合LH字(2016)7216号];贵州省本科教学工程建设项目[2016JG16];贵州师范大学2014年博士科研启动项目;土木工程卓越工程师培养计划项目[黔教高(2014)378号];土木工程专业综合改革项目[黔教高发(2015)337号]

摘　　要：使用不同化学外加剂对贵阳电厂、清镇电厂的陈积粉煤灰加气混凝土进行活性试验,测试试件的抗压、抗折强度。试验发现:Na Cl和Na2SO4的激发效果明显;单掺化学试剂Na Al O2或者Na Al O2和石膏复掺对粉煤灰的活性激发效果都不明显,原因可能是Na Al O2导致成型时需水量增加,试件成型不致密,强度降低。The activity tests of the sedimentary, fly ash aerated concretes for Guiyang power plant and Qingzhen power plant are made by using different chemical admixtures. Meantime, the compressive and flexural strengths of specimens are tested. The results found that： activity effects of NaCl and Na2SO4 are obvious,activity effects of only mixed NaAlO2 or mixed NaAlO2 and gypsum are not obvious for the activity test of the sedimentary fly ash aerated concretes. Reason could be that ＇NaAlO2 resulting in the water demand increased during molding, so that the specimen molding is not dense,and the specimen strength is reduced.

关 键 词：加气混凝土 陈积粉煤灰 化学外加剂 活性 强度 

分 类 号：TU522.32[建筑科学—建筑技术科学]