高强水泥基灌浆料配合比的正交试验研究

Orthogonal test on mix proportion optimization of high-strength cement-based grouting

通过正交试验,研究了硫铝酸盐水泥、标准砂、硅灰、减水剂和膨胀剂掺量对水泥基灌浆料的流动度、3 d抗压强度和28 d抗压强度的影响。试验结果表明:硅灰掺量对灌浆料的流动度影响最大,减水剂掺量对水泥基灌浆料3 d抗压强度的影响最大,硅灰掺量对水泥基灌浆料28 d抗压强度的影响最大。通过正交试验分析优化得到高强水泥基灌浆料的配合比:硫铝酸盐水泥掺量为75%、标准砂掺量为40%、减水剂掺量为12%、硅灰掺量为2%、膨胀剂掺量为1.1%。

By the orthogonal experiment, we study the influence of content of sulphate aluminium cement, standard sand, silica fume, water reducing agent and expansive agent on 3 d compressive strength and 28 d compressive strength. The experimental result show that： the content of silica fume has the largest influence on the flowing grouting material.The content of water reducer has the largest influ- ence on the 3 d compressive strength of cement grouting material.The content of silica fume has the largest influence on the 28 d com- pressive strength of cement grouting material. We get the mix proportion of high strength cement grouting material by the analyzing and optimizing of orthogonal experiment：the content of sulphate aluminium cement is 75% ,the content of standard sand is 40% ,the content of water reducer is 12% ,he content of silica fume is 2% ,the content of swelling agent is 1.1%.