矿渣硫铝酸盐水泥混凝土热学与力学性能研究  

Research on Thermal and Mechanical Properties of Slag Sulfoaluminate Cement Concrete

作　　者：康雪彤 周健 徐名凤 李辉 喻庆华 翟朝阳 林松涛[4] 仲晓林[4] KANG Xuetong;ZHOU Jian;XU Mingfeng;LI Hui;YU Qinghua;ZHAI Chaoyang;LIN Songtao;ZHONG Xiaolin(School of Civil and Transportation Engineering,Hebei University of Technology,Tianjin 300401,China;Jiahua Special Cement Co.,Ltd.,Leshan 614003,China;Tangshan Polar Bear Building Material Co.,Ltd.,Tangshan 063705,China;Central Research Institute of Building and Construction Co.,Ltd.,MCC Group,Beijing 100088,China)

机构地区：[1]河北工业大学土木与交通学院,天津300401 [2]嘉华特种水泥股份有限公司,四川乐山614003 [3]唐山北极熊建材有限公司,河北唐山063705 [4]中冶建筑研究总院有限公司,北京100088

出　　处：《工业建筑》2022年第4期158-162,185,共6页Industrial Construction

基　　金：国家自然科学基金项目(51702082)。

摘　　要：通过等温量热、绝热温升和抗压强度试验对比分析了矿渣硫铝酸盐水泥(S-SAC)与普通硅酸盐水泥(OPC)的热学和力学性能差异。结果表明:7 d时S-SAC水泥水化热总量比OPC水泥的低33.5%,其28 d混凝土抗压强度比OPC混凝土的高36.4%;不同水胶比下,S-SAC混凝土比OPC混凝土后期强度增幅高50%;同一配比下S-SAC混凝土绝热温升是OPC混凝土的49%;双掺粉煤灰和粒化高炉矿渣粉可在保持S-SAC混凝土早期强度的同时,提高后期强度增长率;粉煤灰掺量越高,S-SAC混凝土放热速度越慢,绝热温升越低。与OPC混凝土相比,S-SAC混凝土具有低热高后期强度增长率的优点。The thermal and mechanical properties of slag sulfoaluminate cement(S-SAC)and ordinary Portland cement(OPC)were compared and analyzed by isothermal calorimetry,adiabatic temperature rise and compressive strength tests.The results showed that the total hydration heat of S-SAC cement was 33.5%lower than that of OPC cement at 7 days,and the 28 days compressive strength of S-SAC concrete was 36.4%higher than that of OPC concrete.With different water-binder ratios,the later strength of S-SAC concrete was 50%higher than that of OPC concrete,and the adiabatic temperature rise of S-SAC concrete was 49%of that of OPC concrete at the same ratio.Adding fly ash and granulated blast furnace slag powder could not only maintain the early strength of S-SAC concrete,but also increase the growth rate of later strength;the higher the content of fly ash,the slower the heat release rate of S-SAC concrete,and the lower the adiabatic temperature rise.Compared with OPC concrete,S-SAC concrete showed the advantages of low heat and high strength growth rate in the later stage.

关 键 词：矿渣硫铝酸盐水泥 大体积混凝土 水化放热规律 绝热温升 力学性能 

分 类 号：TU528[建筑科学—建筑技术科学]