大体积混凝土工程用高等级抗裂、抗蚀混凝土制备及其性能研究  

Study on the preparation and performance of high grade crack resistance and corrosion resistance concrete for mass concrete engineering

作　　者：何健辉 薛铖 刘晓敏 骆平 吕民望 杨露[1] 王发洲[1,2] HE Jianhui;XUE Cheng;LIU Xiaomin;LUO Ping;LYU Minwang;YANG Lu;WANG Fazhou(State Key Laboratory of Silicate Materials for Architectures,Wuhan University of Technology,Wuhan 430070,China;School of Materials Science and Engineering,Wuhan University of Technology,Wuhan 430070,China;China Construction Sixth Engineering Bureau Co.,Ltd.,Tianjin 300451,China)

机构地区：[1]武汉理工大学硅酸盐建筑材料国家重点实验室,湖北武汉430070 [2]武汉理工大学材料科学与工程学院,湖北武汉430070 [3]中国建筑第六工程局有限公司,天津300451

出　　处：《混凝土》2024年第9期204-209,共6页Concrete

基　　金：国家自然科学基金(52172025,51925205)。

摘　　要：对比了高铁相硅酸盐水泥与普通硅酸盐水泥制备出的C45和C60混凝土材料抗压强度、水化放热量、化学结合水含量、自收缩变形及抗氯离子渗透性能差异。结果表明:以高铁相硅酸盐水泥为关键材料,辅以高掺量粉煤灰和矿粉复合矿物掺合料等方法,制备出的C45和C60高铁相水泥混凝土抗裂和抗蚀性能优异。C45高铁相水泥混凝土3d绝热温升仅为19.41℃,28d与56d化学结合水含量分别为20.91%、25.66%,较普通硅酸盐水泥混凝土,28d自收缩低17.74%,56d氯离子扩散系数低36.71%,56d电通量低1.99%;C60高铁相水泥混凝土3d绝热温升仅为23.00℃,28d与56d化学结合水含量分别为20.06%29.05%,较普通硅酸盐水泥混凝土,28d自收缩低11.21%,56d氯离子扩散系数低15.60%,56d电通量低3.36%。高铁相水泥混凝土胶凝材料后期水化更加充分,提升了高等级大体积混凝土的抗裂、抗蚀性能。It compares the compressive strength,accumulative hydration heat,non-evaporable water content,auto-shrinkage deformation and resistance to chloride penetration of C45 and C60 concrete materials prepared by high ferrite Portland cement and ordinary Portland cement.The results showed that the crack and corrosion resistance of C45 and C60 high ferrite cement concrete prepared with high ferrite Portland cement as the key material,supplemented with high content of fly ash and slag composite mineral admixture,have excellent performance.The adiabatic temperature rise of C45 high ferrite cement concrete in 3 d was only 19.41℃,and the non-evaporable water contents of 28 d and 56 d were 20.91%and 25.66%respectively.Compared with ordinary Portland cement concrete,the auto-shrinkage in 28 d was reduced by 17.74%,the chloride diffusion coefficient in 56 d was reduced by 36.71%,and the electric flux in 56 d is 1.99%lower.The adiabatic temperature rise of C60 high ferrite cement concrete was only 23.00℃in 3 d,and the non-evaporable water contents in 28 d and 56 d were 20.06%and 29.05%respectively.Compared with ordinary Portland cement concrete,the 28 d auto-shrinkage was reduced by 11.21%,the chloride diffusion coefficient in 56 d was reduced by 15.60%,and the 56 d electric flux was reduced by 3.36%.The cementitious materials of high ferrite cement concrete are more fully hydrated in the later period,which improves the crack and corrosion resistance of high grade mass concrete.

关 键 词：高铁相硅酸盐水泥 大体积混凝土工程 水化温升 抗裂 抗蚀 

分 类 号：TU528.01[建筑科学—建筑技术科学]