硅酸盐通报2026，Vol.45Issue(7)：2237-2249,13.DOI:10.16552/j.cnki.issn1001-1625.2025.1317
赤泥基复合水化晶种对硅酸盐水泥砂浆性能的影响
Effects of Red Mud-Based Composite Hydration Seeds on Properties of Portland Cement Mortar
摘要
Abstract
To enhance the efficient resource utilization of red mud in cement-based materials,this study prepared red mud-based composite hydration seeds(RM-CAW)via acid leaching pretreatment combined with hydrothermal synthesis,and incorporated them into cement mortar to systematically investigate their effects on cement hydration behavior,microstructure,and mechanical properties.Mechanical performance tests together with X-ray diffraction(XRD),thermogravimetric analysis(TG),scanning electron microscopy(SEM),and specific surface area and pore size distribution analyses were conducted to elucidate the strengthening mechanism of RM-CAW.The results indicate that the incorporation of RM-CAW significantly improves the mechanical properties of cement mortar at both 7 and 28 d.In particular,compared with reference cement mortar,the mortar with 5.0%(mass fraction)RM-CAW(HARM-5.0)specimen exhibits increases of 11.1%and 6.9%in flexural strength and compressive strength at 28 d,respectively.The addition of RM-CAW promotes the formation of hydration products such as calcium silicate hydrate(C-S-H),has a pronounced improvement in the interfacial transition zone and an overall densification of the matrix,and promotes pore structure refinement and a reduction in the proportion of large pores.关键词
赤泥/赤泥基复合水化晶种/普通硅酸盐水泥/腐殖酸/水热合成/资源化利用Key words
red mud/red mud-based composite hydration seed/ordinary Portland cement/humic acid/hydrothermal synthesis/resource utilization分类
化学化工引用本文复制引用
李富云,黄胜晶,焦威力,邓孝炜,陈春恒,韦驰,赖芳,李晶..赤泥基复合水化晶种对硅酸盐水泥砂浆性能的影响[J].硅酸盐通报,2026,45(7):2237-2249,13.基金项目
"大学生创新创业训练计划"项目(S202410593112) （S202410593112）
广西自然科学基金会(2025GXNSFDA069049) （2025GXNSFDA069049）
