煤矿安全2025，Vol.56Issue(4)：136-145,10.DOI:10.13347/j.cnki.mkaq.20240303
水泥-水玻璃双液注浆材料性能与微观特性研究
Study on properties and micro-properties of cement-sodium silicate double-liquid grouting material
摘要
Abstract
In order to explore the internal relationship between the microstructure and macroscopic properties of cement-sodium silicate double-liquid grouting materials,Portland cement was used as the base cementing material and sodium silicate as the admix-ture.The effects of low sodium silicate content(mass fraction of 0%,1%,2%and 3%)on physical density,fluidity,water bleeding,setting time,stone rate and compressive strength of cement-sodium silicate double-liguid were investigated.The results show that with the increase of the amount of water glass,the flow and density of the cement slurry continues to decrease,the condensation time is significantly shortened,the bleeding water rate decreases,the stability of the slurry is increased,the stones are increased;the com-pressive strength increased first and then decreased,especially when the content of sodium silicate was 1%,the compressive strength of the stone body reached the best(12.48 MPa)at 28 days,which was 10.4%higher than that of the cement slurry without sodium silicate.XRD,FTIR and SEM confirm that the content of sodium silicate will affect the size and quantity of pores inside the cement matrix,and the appropriate content of sodium silicate can effectively promote hydration reaction,improve the density of stone body,and then improve the slurry performance and mechanical strength of grouting materials.关键词
硅酸盐水泥/水玻璃/凝结时间/抗压强度/注浆材料Key words
Portland cement/sodium silicate/setting time/compressive strength/grouting material分类
矿业与冶金引用本文复制引用
李秋利,赵光明,王艳芬,曾熙文,程详,李英明,孟祥瑞..水泥-水玻璃双液注浆材料性能与微观特性研究[J].煤矿安全,2025,56(4):136-145,10.基金项目
国家自然科学基金资助项目(52204082,5197400,52174102) （52204082,5197400,52174102）
安徽省高校优秀青年科研资助项目(2023AH030040) （2023AH030040）
安徽省科技重大专项资助项目(202203a07020011) （202203a07020011）
