CEM I型水泥和易性和力学性能的改善  

Improvement of workability and mechanical properties of CEM I cement

作　　者：赵鹏[1] 黄涛 曹忠露[1] 李沛[1] ZHAO Peng;HUANG Tao;CAO Zhong-lu;LI Pei(CCCC Tianjin Port Engineering Institute Co.,Ltd.,Tianjin 300222,China;CCCC First Harbor Engineering Co.,Ltd.,Tianjin 300461,China)

机构地区：[1]中交天津港湾工程研究院有限公司,天津300222 [2]中交第一航务工程局有限公司,天津300461

出　　处：《中国港湾建设》2018年第11期37-40,共4页China Harbour Engineering

摘　　要：结合英标中CEM I型水泥在安哥拉卡宾达卡约新港口项目的应用情况,阐明了CEM I型水泥在单掺矿粉或双掺矿粉和粉煤灰下的和易性和力学性能,确定了矿物掺合料的最优掺量。研究结果表明,矿粉和粉煤灰均能改善CEM I型水泥胶砂的和易性,且粉煤灰对其和易性的改善效果要优于矿粉,矿粉对其强度的增长作用优于粉煤灰。单掺矿粉时,最优掺量宜为40%～55%,最大掺量可达65%;双掺矿粉和粉煤灰时,总掺量宜为55%～60%,最大掺量可达65%,其中粉煤灰掺量宜为15%～20%。Based on the application of CEM I portland cement specified by BS standard in the project of the new port of Caio in Cabinda,Republic of Angola,we investigated and clarified the workability and mechanical properties of CEM I Portland cement that was mixed with ground granulated blast furnace slag(GGBS)or/and fly ash(FA),and confirmed the optimum mixing amount.The results indicate that both GGBS and FA can improve the workability of CEM I cement mortar,FA is more effective than GGBS to improve the workability,but GGBS has greater contribution than FA to the strength increasing.When mixed only with GGBS,its optimum mixing amount is 40%~55%and the maximum mixing amount may reach to 65%.When mixed with GGBS and FA,the optimum mixing amount is 55%~60%and the maximum mixing amount may reach to 65%,and the mixing amount of FA should be 15%~20%.

关 键 词：CEMI型硅酸盐水泥 和易性 强度 减水剂 

分 类 号：U654.15[交通运输工程—港口、海岸及近海工程]