Shotcrete is a type of struc-ture material that commonly used in composite lining of tunnel engineering, its quality wil di-rectly influence the whole tunnel’s structure stress, safety and durability.Therefore,to control the shotcrete construction quality in the tunnel is con-ducive to better meet the technical characteristics oftunnelengineering.Shotcreteconstructionquality, mainly depends on the strength of shotcrete, the injection of strata and the bond strength, depth and smoothness etc.
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