Test Background
Waterproof membrane is mainly used in building walls, roofs, tunnels, highways, landfills, etc. It is a flexible building material product that can be rolled into a roll to resist external rainwater and groundwater leakage. As a leak-free connection between the project foundation and the building, it is the first barrier to waterproofing of the entire project and plays a vital role in the entire project.
The impact resistance test of building waterproofing membranes can determine the impact resistance of building waterproofing membranes. Zhongke Testing Reliability Experiment Center has the capability of reliability testing of various building waterproofing membranes, and provides professional impact resistance testing services for building waterproofing membranes.
Scope of tests
1. According to the main composition materials, it is divided into asphalt waterproof membrane, polymer modified asphalt waterproof membrane and synthetic polymer waterproof membrane.
2. According to the different carcasses, they are divided into carcassless rolls, paper carcass rolls, glass fiber carcass rolls, glass cloth carcass rolls and polyethylene carcass rolls.
Test method
The upper surface of the specimen is impacted by a free-falling weight, and there is a prescribed puncture tool at the lower end of the weight. When the impact energy is kept constant, the cylindrical diameters of the piercing tools vary.
The supports are made of expanded polystyrene. The impact resistance is expressed by the diameter of the puncture tool. At least 4 of the 5 test specimens of the waterproof membrane have no leakage.
Test standard:
GB/T 328.24-2007 Test methods for construction waterproofing membranes Part 24: Asphalt and polymer waterproofing membranes Impact resistance
EN 12691: 2001 Flexible waterproofing membranes Roofing waterproofing bitumen, plastic and rubber membranes Impact determination
GB/T 328.1 Test methods for construction waterproofing membranes Part 1: Sampling rules for asphalt and polymer waterproofing membranes
