碳化钢渣对低碳胶凝材料自流平砂浆的性能影响研究  

Study on the Effect of Carbonized Steel Slag on the Performance of Low Carbon Cementitious Material Self-leveling Mortar

作　　者：张亚鹏[1] 王一茗 王会涛 桑志文 ZHANG Yapeng;WANG Yiming;WANG Huitao;SANG Zhiwen(School of Civil Engineering,Hebei University of Engineering,Handan 056038,China;Xingtai Xiangjian Construction Engineering Co.Ltd.,Xingtai 054001,China)

机构地区：[1]河北工程大学土木工程学院,河北邯郸056038 [2]邢台襄建建设工程股份有限公司,河北邢台054001

出　　处：《石家庄铁道大学学报(自然科学版)》2025年第1期64-70,共7页Journal of Shijiazhuang Tiedao University(Natural Science Edition)

摘　　要：试验采用新型低碳胶凝材料,以钢渣砂等体积替代部分机制砂,制备钢渣低碳胶凝材料自流平砂浆,分析钢渣碳化及其掺量对自流平砂浆工作性能、力学性能和体积稳定性的影响。结果表明,碳化处理24 h可显著改善钢渣砂安定性不良的问题,碳化处理生成碳酸钙在钢渣表面形成的致密外壳提升了碳化钢渣砂浆的宏观性能;当碳化后钢渣砂掺量为45%时,砂浆24 h及28 d的抗压、抗折强度最高,分别提高了12.4%、9.3%和11.6%、6.5%。与用全机制砂制备的砂浆相比,采用碳化钢渣砂替代部分机制砂制备的自流平砂浆具有强度高及生产成本低等优点。The steel slag low carbon cementitious material self-leveling mortar was prepared by adopting a new type of low-carbon cementitious material,and partially replacing machine-made sand with steel slag sand in equal volume in this test.The effect of carbonization and replacement rate of steel slag on the workability,mechanical properties and volume stability of low carbon cementitious material self-leveling mortar was investigated.The results show that the carbonization treatment for 24 h can significantly enhance the poor soundness of steel slag sand and the dense calcium carbonate shell formed on the surface after carbonization improves the macro performance of carbonized steel slag mortar.When the proportion of carbonized steel slag sand is 45%,both compressive strength and flexural strength of mortar at 24 h and 28 d achieve their peak values,increasing by 12.4%,9.3% and 11.6%,6.5%,respectively.In comparison to mortar prepared with entirely machine-made sand,the self-leveling mortar formulated using carbonized steel slag sand instead of partially mechanized sand has the advantages of high strength and low production cost.

关 键 词：钢渣 碳化 自流平砂浆 力学性能 

分 类 号：TU528[建筑科学—建筑技术科学]