改性石灰石粉与高炉矿渣协同对混凝土性能及微结构的影响  

Synergistic effect of modified LP and GGBFS on the properties and microstructure of concrete

作　　者：丁庆军[1] 廖庆尧 王君[1] 马雪婷 DING Qingjun;LIAO Qingyao;WANG Jun;MA Xueting(State Key Laboratory of Silicate Materials for Architectures,Wuhan University of Technology,Wuhan 430070,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

出　　处：《混凝土》2025年第3期1-5,11,共6页Concrete

基　　金：国家重点研发计划“大宗工业固废协同制备低成本胶凝材料及应用技术”(SQ2019YFC190453)。

摘　　要：为研究改性石灰石粉(LP)与高炉矿渣(GGBFS)协同对混凝土性能及微结构的影响,研究了改性石灰石粉与高炉矿渣的比例及掺量对混凝土宏观性能的影响,并通过XRD、热分析、热分析微观测试手段研究了改性LP与GGBFS协同对混凝土水化产物和孔结构的影响。结果表明:改性LP与GGBFS协同优化了胶凝材料的粒径,混凝土结构更紧密,提高了混凝土的抗压强度。相较于单掺改性LP,改性LP与GGBFS复掺促进了胶凝体系的水化反应,使水化速率和水化程度得到提高,细化了混凝土的孔结构,提升了混凝土整体性能。In order to study the synergistic effect of modified limestone powder(LP)and granulated blast furnace slag powder(GGBFS)on the properties and microstructure of concrete,the ratio and dosage of modified LP and GGBFS were studied on the macroscopic properties of concrete.The synergistic effect of modified LP and GGBFS on the hydration products and pore structure of concrete was studied through XRD,thermal analysis,and heat analysis of microscopic testing methods.The results indicate modified LP and GGBFS double mixed synergistically optimize the particle size of the cementitious material,make the concrete structure more compact,and improve the compressive strength of the concrete.Compared to the single addition of modified LP,the combination of modified LP and GGBFS promotes the hydration reaction of the cementitious system,improves the hydration rate and degree,refines the pore structure of concrete,and improves the overall performance of concrete.

关 键 词：石灰石粉 高炉矿渣 水化产物 孔结构 

分 类 号：TU528.01[建筑科学—建筑技术科学]