Many people may say when they see spraying waterproof coating, spraying coating is very simple and does not require any explanation at all. But is it really so?
Bridge deck waterproofing construction is mainly divided into two parts: bridge deck cleaning and bridge deck waterproofing coating spraying.
The first part of the cleaning is divided into shot blasting (roughening) of the bridge deck and base cleaning. Let’s not talk about this topic for now.

Spraying waterproof coating is divided into two steps: spraying bridge deck waterproof coating and local painting.
When spraying the bridge deck waterproof coating for the first time, a certain amount of surfactant solution should be added to the coating for dilution to promote the penetration of the coating into the capillary pores of the base layer and improve the bonding strength and shear strength of the waterproof coating. When spraying the second, third, and fourth coats of paint, wait until the previous coat of paint is completely dry before spraying.
Partial painting is to prevent the paint from contaminating the anti-collision wall. When spraying the bridge deck waterproof coating, someone must hold a cloth to protect the anti-collision wall. Recommendation: Due to the waterproof layer at the bottom of the anti-collision wall, it is generally recommended to use manual painting for partial painting.
How about the construction technology of spraying bridge deck waterproof coating? After reading the above content, do you still think it is a simple job?