铁质渣球超高强高耐磨混凝土材料的研究

Research on ultra-high strength and high wear resisting concrete material with iron slag

研究铁质渣球的物理、力学性质;通过正交试验设计,确定了超高强、高耐磨混凝土最佳配比:铁质渣球与胶凝材料的体积比掺量(Ai/B)为0.5、高效减水剂(液体)掺量为3%、钢纤维掺量(体积率)为4%、硅灰掺量(占胶凝材料总量)为10%、水胶比0.18。通过多元回归分析确定模型方程,并进行方差分析,经过试验优化,得到28d抗压强度为129.3MPa、抗折强度为28.87MPa、弹性模量最高可达53GPa、断裂能可达3198J/m2的超高强、高耐磨混凝土。

Study has been made on physical and mechanical properties of iron slag.By orthogonal experimental design determine the optimum mix ratio of ultra-high strength and high wear resistant concrete: volume ratio of iron slag and binding material Ai/B=0.5;amount of superplasticizer (liquid) 3%;incorporation of 4 percent steel fiber (volume ra-tio);volatilized silica amount to 10% (of the total weight of binding material) and water-binder ratio of 0.18.By multiple regression analysis,model equation is determined and variance analysis is made.After experiment optimization,obtain ultra-high strength and high wear resistant concrete with 28d compressive strength 129.3 MPa,28 d flexural strength 28.87 MPa,elastic modulus up to 53 GPa and fracture energy to 3198 J/m2.