Cut hair when you cut hair in order not to damage the underlying structure, and demanded that the cut hair machine drill bit operations must have a high frequency cut wool cleaning purpose is to improve the stability of interlayer and the shear capacity, prevent water infiltration and the strength of the corrosion of the steel structure. Pavement surface treatment before the seal before the preventive maintenance of asphalt pavement, namely in the fog seal, seal of emulsified asphalt, modified asphalt sealing layer, gravel layer mask before, must be conducted on the original asphalt surfaces clean up in order to increase the surface roughness, improve the seal cover surface and the bonding degree of the original at the grass-roots level.

1. Other buildings cut hair both Bridges, piers, or components before casting hinge joints and bridge deck pavement maurer, fractures and notches or cement concrete dam, power plant, ports, docks, tunnels, hydropower station, the pier concrete or reinforcement of construction projects such as the projects, cut hair of the objective is to make between new and old cement concrete to form a whole.

2. The road characteristics, improve friction, make the moving vehicles and landing the plane can run smoothly and safely; Steel box bridge deck chisel Mao Gang box bridge deck in the need to cut hair before laying membrane cleaning. As a result, not only to remove the surface after being gouge laitance should also form concave and convex pits, rather than a smooth hair surface. Only in this way can the new and old concrete bonding as a whole.