再生矿渣胶结料稳定混合料强度研究

Study on Strength of Stable Mixture of Recycled Slag Cement

对再生骨料替换率为60%、80%和100%的矿渣和水泥胶结料稳定混合料进行强度试验研究。结果表明,与同条件的水泥相比,使用矿渣胶结料的再生混合料7 d的无侧限抗压强度可提高75%以上,间接拉伸强度可提高50%以上;在矿渣胶结料用量为4.0%时,再生骨料为100%的试件强度可达到5.1 MPa,满足高速公路和一级公路路面基层重交通强度要求。

A strength test study was carried out on the stable mixture of slag and cement binder with replacement rates of 60%,80%and 100%of recycled aggregate.The results show that the unconfined compressive strength and the indirect tensile strength of the recycled mixture using slag cement can be increased by more than 75%and 50%,respectively,compared with those of the cement under the same condition.When the amount of slag cement is 4.0%,the strength of the specimen with 100%recycled aggregate can reach 5.1 MPa,which meets the requirements of heavy traffic intensity of highway and first-class highway pavement.