Polymer cement-based waterproof rubber powder (special rubber powder for polyethylene polypropylene membrane) Polyethylene polypropylene waterproof membrane uses polyethylene, high-strength polypropylene non-woven fabric, antioxidants, anti-aging agents, and ultraviolet frequency shielding Agents and other polymer raw materials undergo physical and chemical changes and are made by one-time composite processing on automated production lines. Composition structure: The middle layer is a waterproof layer and an anti-aging layer, and the upper and lower sides are reinforced bonding layers (polypropylene filament non-woven fabric). Its characteristics include high tensile strength, good waterproof and impermeability properties, and simple construction. It is one of the best waterproof materials in the domestic and foreign markets. Polymer cement-based waterproof rubber powder is a special rubber powder matched with polyethylene polypropylene membrane. The rubber powder has good bonding and waterproof properties. The main ingredients include: dispersible polymer powder, methyl cellulose ether, polyacrylate, water retaining agent, etc. Its ratio is: rubber powder: cement: water = 1:10:3, mixed together to form a polymer cement waterproof binder. The above two products and special waterproof construction technology are combined to form a polyethylene polypropylene membrane-polymer cement composite waterproofing system. The waterproofing project that has been done in this way can ensure the quality of the project without leakage. This is one of the main factors, because the adhesive material itself is a waterproof layer. Operation process 1. Clean the base surface: Clean the base surface. If the base surface is dry, , must be moistened, but no open water. 2. Preparation of polymer cement binding material: The materials for preparing polymer cement binding material include polymer cement-based waterproof rubber powder, water and 32.5# ordinary Portland cement. The preparation ratio is rubber powder: cement: water = 1: 10:3 (weight ratio). Preparation method: During preparation, first dry-mix a bag of rubber powder (5Kg) and a bag of cement (50Kg), then add it to 15kg of water while stirring. The amount of water can be adjusted appropriately according to the on-site conditions. Stir until there are no lumps or precipitation before use. Stir with an electric mixer or manual bamboo rake. The prepared cement adhesive should be used within 4 hours. 3. Node treatment: Before large-scale construction, additional layers should be made at the nodes to strengthen the local waterproof function.