摘要
针对水泥浆液黏度、析水率、结石体抗压强度等主要性能指标,选择P.O42.5、P.O52.5两种标号普通硅酸盐水泥,0.5∶1~1.2∶1六个水灰比等级和塑化剂、速凝剂两种外加剂进行全面组合试验,研究了水泥标号、水灰比和外加剂对水泥浆液基本性能的影响效果。试验表明,在水泥浆液中添加1%的塑化剂,能够显著降低浆液黏度,在保证良好可注性的前提下大幅降低水灰比,从而提高结石体强度。
In order to get the cement slurry performance parameters such as viscosity, bleeding rate, solidification body compressive strength, this paper selects two grade of ordinary portland cement-P · O42.5,P · O52.5 ,six water cement ratio -0.5- 1.2 and two kinds of cement admixture-water reducer and setting accelerator to conduct a comprehensive combination test. And it studies the grade of cement, water cement ratio and cement admixture on cement slurry performance improvements. The test results show that,the cement slurry containing 1% water reducer, can significantly reduce the viscosity, and in the premise of good groutability it substantially reduces the water cement ratio, thereby improving compressive strength of cement grout solidification body.
出处
《中国矿业》
北大核心
2013年第3期83-86,共4页
China Mining Magazine
基金
国家自然科学基金项目资助(编号:51174002)
深井采场覆岩破裂与冲击地压孕育机制及预警方法项目资助(编号:51274008)
急倾斜厚煤层综采工作面采动围岩破坏演化规律与成灾机理项目资助
关键词
水泥浆液
黏度
析水率
抗压强度
优化配比
cement slurry
viscosity
bleeding rate
compressive strength
optimal scheme