粉煤灰与煤矸石混凝土压剪强度试验研究与分析

Research and Analysis on Compression Strength and Shear Strength Test of Fly Ash and Coal Gangue Concrete

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。

We study compressive strength and shear strength test of 28 d on concrete, 10% fly ash concrete, 20% fly ash concrete and coal gangue concrete; the experimental results show that the compressive strength of 10% fly ash concrete, 20% fly ash concrete and coal gangue concrete compared with ordinary concrete has fallen by 45.25%, 55.89% and 17.11%; relations between shear strength and shear angle adopt linear fitting and exponential fitting for four different types of concrete; shear strength of ordinary concrete, 10% fly ash concrete and 20% fly ash concrete changing with the shear angle conforms to exponential model, and shear strength of coal gangue concrete changing with the shear angle conforms to the linear model.