通过析水率、黏度、结石体强度、耐久性等试验,对普通水泥与超细水泥这两种注浆材料进行了材料性能对比研究.结果表明:超细水泥有更好的稳定性,在水灰比大于0.8时,有更低的黏度,其结石体的强度更高,有致密的结构,耐久性好.在黄土的模拟注浆试验中,对注浆的效果进行总结,两种注浆材料劈裂土体形态类似,验证符合力学规律.通过对土体进行土工试验,超细水泥挤密土体的效果更好,其土体抗剪强度提高、压缩性降低比普通水泥注浆土体明显,结果表明超细水泥有着更适合的黄土注浆前景.
Through the analysis of water separating rate, viscosity, stone body strength, durability and other tests on the two kinds of grouting materials of Portland cement and superfine cement, the experimental results show that the superfine cement has better stability and lower viscosity when the water cement ratio is greater than 0.8.The strength of the stone body is higher and the density of the stone has a compact structure and good durability.In the simulated grouting test of loess, the effect of grouting is summarized.The two kinds of grouting materials are similar to splitting soil in shape, to verify compliance with the laws of mechanics.Through soil mechanics experiment, the superfine cement squeeze better density of soil than Portland cement.It''s obvious that the shear strength of the soil is improved, and the compression ratio is lower than that of the Portland cement grouting soil.The results show that the superfine cement is more suitable for the prospect of grouting loess.
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