PCM (polymer self-adhesive rubber asphalt composite waterproofing membrane) Polymer self-adhesive rubber asphalt composite waterproofing membrane is a new waterproof material developed on the basis of self-adhesive rubber asphalt waterproofing membrane. It uses polymer sheets of polymer resin (HPPE, LDPE, EVA, PVC, ECB, DTPO) as the main waterproof layer, and a layer of rubber asphalt self-adhesive material with creep function is coated on or under it, and then a layer of polymer self-adhesive waterproof coiled material made of silicon foil anti-adhesive isolation film is covered. The composite polymer waterproof material can be formed by reinforcing the composite fabric on the polymer sheet as required. Based on the characteristics of high strength, high elongation and anti-aging, this material has the functions of self-adhesive bonding, self-sealing healing and strengthening anti-load protection, which combines the unique properties of polymer sheets with the properties of self-adhesive rubber asphalt materials. It has the advantages of polymer waterproofing membrane and self-adhesive membrane, and solves the defect that the overlapping parts of the existing similar membranes are easy to leak. The pre-laid anti-adhesion technology is adopted to ensure good adhesion between the coil and the base. According to the different use conditions, the longitudinal and transverse lap joints of PCM polymer composite self-adhesive waterproofing membrane can be overlapped or fully welded. PCM polymer composite self-adhesive waterproofing membrane is a perfect combination of polymer membrane and self-adhesive membrane, which integrates reliability, practicability, economy and safety. It is an effective waterproof product and technical barrier for exposed waterproofing projects with root water retention, complex environment and high fortification level. It is an ideal waterproof material for tunnels, caves, subways and basements.