The domestic first ultra-long multi-span continuous viaduct-312 National Highway ultra-long multi-span continuous viaduct is under intensive construction.

The reconstruction and expansion project of this section of National Highway 312 is a super-long multi-span concrete continuous elevated, the span layout is 42.22+3×41.5+12×39+40+65+40+43+42.98m, the total length is 864.98m, and the standard section bridge width 33m, the maximum width of the variable width section is 51.87m, the standard beam height is 2.5m, the lower part adopts double-column piers, the column size is 2.4×2.4m, the lateral spacing is 10.4m, and the foundation adopts 12 D1.5m bored piles.

As a key project in Wuxi City, the 312 National Road Reconstruction and Expansion Project has advanced and strict industry standards in the selection of anticorrosive coatings for steel box beams. ZINDN's water-based cold spray zinc coating has stood out among many suppliers, helping to build China's first ultra-long multi-span continuous viaduct.

ZINDN has tailored anti-corrosion solutions for the steel box girder in the 312 national road reconstruction and expansion project. The outer surface is equipped with water-based cold spray zinc➕epoxy mica intermediate paint➕fluorocarbon topcoat, and the inner surface is equipped with water-based cold spray zinc➕cold spray Zinc seal paint (customized) helps the project to maximize the asset life cycle in terms of anti-corrosion and extend the maintenance cycle.

ZINDN water-based cold spray zinc continues the high anti-corrosion performance of cold spray zinc. The coating zinc content is ≥92%, the zinc purity is ≥99.995%, double protection, and the corner welds are not rusty. Zinc shield water-based cold spray zinc technology has created the original "H-inhibition" patent technology, which delays the hydrogen evolution reaction of zinc powder to a greater extent, so that the water-based single-component cold spray zinc can be stored stably. It has good workability and solves the problems of difficulty in construction and poor performance of water-based anticorrosive coatings in the past.

ZINDN water-based cold spray zinc is a kind of paint that uses water as the dissolving medium. It has the advantages of non-toxic and environmentally friendly, odorless, minimal volatile, non-flammable and non-explosive, and is a green and environmentally friendly product that does not use organic solvents as diluents. At present, the zinc shield water-based industrial paint technology is very mature and has been applied to many fields such as bridges, containers, and construction machinery.