... primitive plastic and dry shrinkage cracks in the concrete. PAN cement fiber can enhance the toughness and impact resistance, in the ... , such as frost resistance, impermeability, and so on. PAN cement fiber is widely applied in the construction of road, bridge, tunnel ... /m³)Crack resistance,Anti-seepageDam slab, beam, wall and floor panel, , etc.0.5-1.0Impact and abrasion resistanceDam floodway, ...