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Without a frantic jumble that major repair material area switch sleeper embedded frantic jumble that tao is the major repair material and Labour tools project name note materials polymer cement base material for concrete crack surface closed low viscosity resin material for concrete cracks without pressure grouting low pressure grouting repair material for concrete crack elastic polyurethane material is used for low pressure grouting mortar or concrete expansion joint repair resin polymer modified cement mortar for concrete defect repair