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为了深入研究水泥-水玻璃速凝注浆材料的稳定性能,通过室内试验,分析了复合水泥-水玻璃注浆材料的主要性能参数。利用回归正交试验设计方法,以抗压强度、凝胶时间为主要指标,采用极差法和直观图法分析浆液的抗压强度并对配比进行了优化设计,通过腐蚀试验分析了硫酸盐、碳酸盐对强度的影响。研究结果表明,磷酸氢二钠对注浆材料的强度影响很小,作为良好的缓凝剂效果明显;影响浆材28d抗压强度的主要因素依次为水灰比、水玻璃、减水剂、磷酸氢二钠;浸泡90d,在5%的Na_2SO_4溶液中结石体的强度损失最大达44.1%,在5%的Na_2CO_3溶液中,强度损失达18.5%;选择较优配比浆液作为注浆材料,根据相应的施工工艺,为后期场地加固做好铺垫。
In order to further study the stability of cement-water glass quick-setting grouting material, the main performance parameters of composite cement-water glass grouting material were analyzed through laboratory experiments. Using regression orthogonal experimental design method, the compressive strength and gel time were taken as the main indexes. The compressive strength of the slurry was analyzed by using the range method and the direct graph method, and the optimal design of the ratio was optimized. The corrosion resistance of the sulphate , The impact of carbonate on strength. The results show that the disodium hydrogen phosphate has little effect on the strength of the grouting material and has a good effect as a retarder. The main factors affecting the compressive strength of the pulp at 28d are water-cement ratio, water glass, The strength loss of calcite in 5% Na2SO4 solution was up to 44.1% after 90 d immersion, and the strength loss was up to 18.5% in 5% Na2CO3 solution. The better proportion slurry was selected as the grouting material, According to the corresponding construction technology, to pave the way for the later site reinforcement.