硅质尾矿对发泡水泥性能的影响

In order to explore the influence of siliceous tailings on the performance of foamed concrete, the foamed concrete samples with substitution of silicious gold tailings for fly ash in the ratios of 0%, 5%, 10%, 15%, 20%, 25% and 30% were prepared and the properties of samples were investigated. Also, the effect of the specific surface area of tailings on the compressive strength of foamed concrete was studied. Results show that the addition of tailings has significant effect on the compressive strength of foamed concrete, compared with the blank sample, 10% tailings with a specific surface area of 233m2/kg can increase the compressive strength by 84%, while 10% tailings with a specific surface area of 1161m2/kg can increase the compressive strength by 133%. After the substitution of fly ash with an appropriate amount of tailings, the pore size of the foamed concrete was reduced and the roundness of the pores and the density of the pores were improved.