通过对正交试验样本的极差分析得到最优配比，并基于最优配比，对试样中的矿渣采用钢渣进行取代，测试试样的抗压强度、吸水性能和膨胀收缩性能，重点分析了钢渣取代量对复合充填胶凝材料物理力学性能的影响。研究表明：钢渣取代量对试样的物理力学性能有显著影响，随着钢渣取代量的提高，试样的抗压强度逐渐降低，吸水量逐渐升高，收缩率逐渐减小；随着钢渣取代量的提高，试样水化产物中的托勃莫来石、硬硅钙石、水铝钙石和C-S-H逐渐减少，直至消失，而板状的氢氧钙石等水化产物逐渐增多。
The optimal ratio was obtained by range analysis of orthogonal test , and based on the optimal ratio, the content of GGBS was substituted by different content of steel slag , and those samples were characterized by compressive strength test , water absorption test and expansion-contraction test , the influence of steel slag substitution on the physical and mechanical properties of samples were analyzed . Studies have shown that:steel slag substitution have a significant impact on the physical and mechanical properties of samples , with the substitution of steel slag increased , the compressive strength of samples gradually reduced , water absorption gradually increased , shrinkage rate decreased; with the substitution of steel slag increased , plomberite-14A, xonotlite, hydrocalumite and C-S-H gradually reduced until disappeared , while plate-shaped hydration products gradually increased .
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