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通过普通混凝土试样、10%粉煤灰混凝土试样、20%粉煤灰混凝土试样和煤矸石混凝土试样进行28 d抗压强度和抗剪强度试验。试验结果表明:10%粉煤灰混凝土试样、20%粉煤灰混凝土试样和煤矸石混凝土试样相比于普通混凝土试样28 d抗压强度分别下降了45.25%、55.89%、17.11%;4种混凝土试样抗剪强度与剪切角关系分别采用线性拟合和指数拟合,普通混凝土试样、10%粉煤灰混凝土试样和20%粉煤灰混凝土试样抗剪强度随剪切角衰减变化符合指数模型,煤矸石混凝土抗剪强度随剪切角衰减变化符合线性模型。
The 28-day compressive strength and shear strength tests were carried out on ordinary concrete specimens, 10% fly ash concrete specimens, 20% fly ash concrete specimens, and coal gangue concrete specimens. The test results show that the compressive strengths of 10% fly ash concrete specimens, 20% fly ash concrete specimens and gangue concrete specimens have decreased by 45.25%, 55.89%, and 17.11%, respectively, compared with that of ordinary concrete specimens. The relationship between shear strength and shear strength of four concrete specimens was linearly and exponentially fitted, and the shear strength of ordinary concrete specimens, 10% fly ash concrete specimens, and 20% fly ash concrete specimens were varied. The change of shear angle attenuation accords with the exponential model, and the shear strength of coal gangue concrete decreases with the shear angle, which is consistent with the linear model.