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通过现场试验,比较了普通硅酸盐水泥和高贝利特水泥混凝土与基岩的抗剪(断)性能。结果表明:高贝利特水泥混凝土的抗剪断和抗剪性能优于普通硅酸盐水泥。通过线性回归得出高贝利特水泥混凝土与基岩的抗剪断应力方程为τ=1.204δ+0.278(其中,δ为剪切面上的正应力),抗剪应力方程为τ′=1.119δ+0.150。普通硅酸盐水泥混凝土与基岩的抗剪断应力方程则为τ=0.790δ+0.257,抗剪应力方程为τ′=0.683δ+0.061。对高贝利特水泥改善混凝土–基岩的抗剪和抗剪断机理进行了探讨。
Through field tests, the shear resistance (breaking) performance of ordinary portland cement and high belite concrete and bedrock are compared. The results show that the anti-shearing and shearing properties of high belite concrete are better than that of ordinary Portland cement. The shear stress equation of high belite cement concrete and bedrock obtained by linear regression is τ = 1.204δ + 0.278 (where δ is the normal stress on the shear plane) and the shear stress equation is τ ’= 1.119δ +0.150. The shear stress equation of common Portland cement concrete with bedrock is τ = 0.790δ + 0.257 and the shear stress equation is τ ’= 0.683δ + 0.061. The high belite cement to improve the concrete - bedrock shear and shear resistant mechanism are discussed.