水泥比表面积与石膏的匹配对硫铝酸盐水泥膨胀性能的影响及机理  

Effect of match of specific surface area of cement with gypsum on expansion property of sulpho-aluminate cement and mechanism analysis

作　　者：肖忠明[1] 郭俊萍[1] 

机构地区：[1]中国建筑材料科学研究总院,北京100024

出　　处：《水泥》2016年第10期8-10,共3页Cement

基　　金：国家科技支撑计划项目(2014BAB15B02-01)

摘　　要：本文对不同比表面积、不同石膏掺量的硫铝酸盐水泥的膨胀性能进行了研究。结果表明,硫铝酸盐水泥的比表面积、比表面积/石膏掺量的比值影响着硫铝酸盐水泥的膨胀性能,比表面积越大、比表面积/石膏掺量比值越大,硫铝酸盐水泥的膨胀率越小。其机理在于比表面积、比表面积/石膏掺量的比值控制了钙矾石的生成速度、生成量以及形貌。The expansion property of sulpho-aluminate cement that with different specific surface area and gypsum addition percentages were studied. The results showed that the specific surface area and the ratio of specific surface area to gypsum addition percentage affect expansion property of sulpho-aluminate cement. The expansion rate of sulpho-aluminate cement would decrease with increasing of specific surface area and ratio of specific surface area to gypsum addition percentage. It was because of the specific surface area and ratio of specific surface area to gypsum addition percentage controling the formation speed, formation amount and morphology of ettringite.

关 键 词：硫铝酸盐水泥 比表面积 石膏掺量 膨胀性能 机理 

分 类 号：TQ172.74[化学工程—水泥工业]