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本文用硅酸盐水泥、矿渣硅酸盐水泥、高铝水泥并采用7种水灰比(0.2—0.5),以石英和石灰石为集料,制成26种粘结试体,以直接测定水泥浆体和集料界面抗剪及抗拉粘结强度的方法,通过回归分析确定了水泥浆体和集料界面的抗拉或抗剪粘结强度,发现两者均与水灰比线性负相关。实验表明,石灰石-水泥浆体的界面粘结强度大于石英-水泥浆体的界面粘结强度;硅酸盐水泥浆体-集料的界面粘结强度大于矿渣硅酸盐水泥浆体-集料的界面粘结强度。以熟料作集料可显著提高界面粘结强度。
In this paper, we used Portland cement, slag portland cement, and high-alumina cement, and used seven kinds of water-cement ratio (0.2-0.5), quartz and limestone as aggregates, made 26 kinds of bonded test bodies to directly determine the cement The shear and tensile bond strengths at the interface between the slurry and the aggregate were determined by regression analysis to determine the tensile or shear bond strength at the interface between the cement paste and the aggregate, and it was found that both are linearly negatively related to the water-cement ratio. . Experiments show that the interfacial bond strength of limestone-cement paste is greater than that of quartz-cement paste; the interface bond strength of Portland cement paste-aggregate is greater than that of slag Portland cement paste-aggregate The interface bond strength. The use of clinker as aggregate can significantly increase the interfacial bond strength.