1. Improving the quality of reinforcing steel works remarkably:
Compared with the traditional manual binding of steel bars, the welded mesh has the advantages of high stength, good elasticity and even spacing.
When pouring concrete, the steel bar is not easy to bend locally, and the thickness of concrete protective layer is easy to control and uniform. In the bridge deck pavement, the qualified rate of welding net protective layer is more than 95%.
2. Improving the construction speed obviously:
A large number of construction practices at home and abroad show that the use of welded mesh greatly reduces the site installation time and saves the steel bar processing site. With the same amount of reinforcement, it takes about 4 man-hours for 1000kg welding net to be laid by single layer, 6 man-hours for double layer net and 22 man-hours for second-hand binding, which can save about 50%-70% of man-made binding time compared with manual binding time.
3. Strengthening the crack resistance of concrete:
Artificial steel wire bonded intersection is easy to slip, steel bar and concrete bonding force is weak, easy to produce cracks, and welded mesh solder joint can not only withstand pressure, but also bear shear force. Longitudinal and transverse reinforcing bars form a network structure to act as bonding and anchorage. When welded reinforcing bars adopt smaller diameter and denser spacing, the increase of welded joints per unit area is more conducive to strengthening the crack resistance of concrete, which can reduce the occurrence of cracks by more than 75%.
4. It has better comprehensive economic benefits:
Save time: The use of welding net saves a lot of manual binding and construction site, can achieve civilized construction, so that the quality of steel engineering is significantly improved. Because welding net is prefabricated in advance in the factory, the site does not need to be reprocessed, there is no steel waste, because the construction cycle is shortened, thus reducing the cost of hoisting machinery.
Save steel: Compared with grade I steel bar, the design strength of ribbed steel bar net is about 70% higher than grade I steel bar. Considering some structural requirements, steel can still be saved by more than 25%.