The first bid section of Tianjin Central Avenue Haihe Tunnel uses immersed tube polyurea for waterproofing. The total length of the immersed tube is 255 meters. For such an important project, polyurea is used for waterproofing construction. So, what is the principle of using poly

2024/05/3023:58:33 home 1648

The first section of Tianjin Central Avenue Haihe Tunnel uses immersed tube polyurea for waterproofing. The total length of the immersed tube is 255 meters. For such an important project, polyurea and waterproofing construction are used. Then, the immersed tube tunnel uses polyurea waterproofing construction technology principles what is it then?

Yantai Lumeng Waterproof and Anticorrosive Materials Company, as a member of the construction team at that time, used Lumeng brand LM-SPUA spray polyurea elastomer waterproof coating for construction, and won the 2015 " Construction Waterproof Engineering Jinyu Award" for this project "Gold Medal.

Spray polyurea elastomer technology is developed on the basis of polyurethane reaction injection molding technology. It combines the reaction characteristics of polyurea resin with the rapid mixing and rapid molding characteristics of RIM technology. Using this process, by adjusting the reaction The ratio of materials in the system results in coatings with different properties and different curing times, ranging from impact and wear resistance coatings with different flexibility, toughness to hardness. The curing time can be adjusted from a few seconds to a few minutes. Spray polyurea elasticity There are two key aspects to the solid technology. One is the reaction principle of polyurethane ether, liquid amine chain extender and isocyanate and its industrialization, and the other is the patented industrial equipment required for spraying.

The inherent good properties of polyurea make it a rational material for waterproofing projects in immersed tube tunnels. When sprayed with polyurea elastic waterproof coating, the coating cures quickly and does not sag during facade and top surface construction. The coating has no seams and excellent waterproof performance. ;Excellent physical properties; high elongation , no cracking after alternating hot and cold resistance; good weather resistance, no powdering, no fading. 100% solid content, no VOC, environmentally friendly.

Editor Lu Meng previously introduced the role of polyurea in tunnel construction, which also fully reflects the importance of polyurea in tunnel waterproofing.

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