水泥强度对蒸养混凝土掺合料活性指数影响的研究  

Study on the Influence of Contrast Cement Strength and Admixture Activity Index of Steam Curing Concrete

作　　者：蒋元海[1] 明维 许国林 刘程旭 吴建锋 Jiang yuanhai;Ming wei;Xu Guolin;Liu Chengxu;Wu Jianfeng(Jiaxing University,Jiaxing 314001,China;Ningbo Zhongchun Hi Tech Co.,Ltd,Ningbo 315100,China)

机构地区：[1]嘉兴学院,浙江嘉兴314001 [2]宁波中淳高科股份有限公司,浙江宁波315100

出　　处：《水泥工程》2023年第1期90-93,共4页Cement Engineering

摘　　要：研究了采用P·II 52.5和P·O 42.5两种对比水泥,测定了4个不同品种的蒸养混凝土掺合料在不同龄期的胶砂试件抗折强度、抗压强度,计算了4个不同品种掺合料不同龄期的活性指数。发现了掺合料活性指数测定值与选用的对比水泥强度等级有关,采用P·O 42.5对比水泥时测定的掺合料活性指数较采用P·II 52.5对比水泥时测定值高25.6%~29.9%。Two kinds of contrast cement,P·II 52.5 and P·O 42.5,were studied.The flexural strength and compressive strength of four admixtures cement samples were measured at different ages.The activity index of admixtures was calculated at different ages.It is found that the admixture activity index is related to the selected contrast cement strength grade.The admixture activity index measured by P·O 42.5 was 25.6%~29.9% higher than that measured by P·II 52.5.

关 键 词：蒸养掺合料 对比水泥 基准水泥 活性指数 国家标准 

分 类 号：TQ172.6[化学工程—水泥工业]