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

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.