Firstly, the characteristics of epoxy resin anti-corrosion steel pipes
The paint film of epoxy resin anti-corrosion steel pipes after curing is tough, water resistant, non-toxic, and non polluting to water. Strong adhesion, with good adhesion between paint films. Excellent rust and water resistance, using excellent rust resistant raw materials to ensure its rust resistance. It has excellent mechanical strength, tough paint film, and wear and impact resistance. High solid content and thick coating. Cure at room temperature to form a film. No need for large-scale baking equipment.
Epoxy resin anti-corrosion steel pipe
Secondly, repair the damaged anti-corrosion layer of epoxy resin anti-corrosion steel pipe piles
(1) High construction quality. The anti-corrosion coating for repairing damaged steel pipe piles has certain requirements for layer bonding strength, coating appearance, and film thickness in terms of construction quality. Special acceptance should be conducted for these three different aspects.
(2) The construction environment is poor and there are dangerous factors. As a strong current water area, Hangzhou Bay has its own high waves, high currents, large tidal ranges, and other factors that make repair work more difficult. Repair work is carried out without support points, and there are many dangerous factors during the operation process. At the same time, it is also necessary to prevent damage caused by the repair construction process.
(3) About 36.1% of the piles are damaged, while 79.2% of the pile cap units are damaged. So the construction workload is high.
(4) The repair section of the steel pipe pile is located at an elevation of -2.0m on the bottom surface of the bearing platform, and this section needs to be repaired with tide water. Based on the tidal water level in Hangzhou Bay, operations can only be carried out during spring tides, which means that construction operations can be carried out for half a month, and during this half month, there is only one low tide level per day, and the effective operation time at the tide level does not exceed two hours. So the homework deadline is short.