Effect of Cement Content on Durability of Fly Ash-Carbide Slag Residue Concrete

Abstract

Through the indoor experiments of the bending strength and the compressive strength at different contents and ages, the optimal cement and fly ash-carbide slag content were determined. The durability of optimal cement content residue concrete and pure residue concrete were systematically studied by related experiments and scanning electron microscopy (SEM). Combined with the actual construction in Three Gorges reservoir area, the durability was verified. The results show that when the optimal cement content is 150kg/m3 and the fly ash —carbide slag content is 350kg/m3, the impermeability, the frost resistance, the erosiveness resistance and the wear resistances of residue concrete are obviously improved, which can meet the pavement surface requirements of rural roads in the Three Gorges reservoir region. It also offers a valuable reference for environmental protection and rural road construction.