Application examples of PU foam in transportation

Application examples of PU foam in the transportation field mainly include road repair and maintenance. In foreign countries, polyurethane foam is widely used in highway maintenance, especially in the maintenance of highways. When the road surface is sunken or damaged, the traditional repair method usually requires closing the road, digging out the damaged part, and re-paving concrete or asphalt, which is not only time-consuming and labor-intensive, but also has a serious impact on traffic. The use of polyurethane foam greatly simplifies this process. Construction workers only need to drill a hole in the sunken road surface and inject polyurethane foam into it. The foam will expand rapidly and fill the hole, and then solidify within 15 minutes to form a solid repair layer. This repair method is not only fast, but also the repaired road surface has high strength and strong pressure resistance, and will not deform even if a vehicle passes by.