Polymer cement waterproof coatings: testing properties, methods, instruments
Polymer cement waterproof coating is a kind of waterproof coating based on polymer and cement as the main raw materials, with good waterproof performance and durability. Its application fields are wide, including basement, bridge, water conservancy engineering, sewage treatment plant and other construction engineering fields, as well as subway, tunnel and other transportation infrastructure fields.
Key performance and equipment
| Key performance | Instruments and equipment |
|---|---|
| Strength of bond | Tensile testing machine |
| Water resistance | Water immersion test chamber |
| Resistance to alkali | Alkalinity meter |
| Durability of life | Pirelli testing machine |
| Resistance to permeability | Water pressure tester |
| Resistance to weather | Constant temperature and humidity box |
| Performance of construction | Rheological meter |
Polymer cement waterproof coatings: testing properties, methods, instruments
Step of detection
Specific testing steps of polymer cement waterproof coating:
Bond strength: The paint sample is coated on the appropriate substrate, and after it is dried, the tensile test is carried out using a tensile testing machine to obtain the bond strength parameters of the sample.
Water resistance: SOAK the coating sample in water and observe the changes, such as peeling, foaming and other phenomena indicate poor water resistance.
Alkali resistance: Use the alkalinity meter to measure the coating sample, and get its alkali resistance in alkaline environment.
Polymer cement waterproof coatings: testing properties, methods, instruments
Durability: Put the coating sample into the Pirelli testing machine, conduct the simulated performance aging test, observe the performance change, to evaluate its durability.
Impermeability: Use a hydraulic tester to test the permeability of the coated sample to evaluate its impermeability.
Weather resistance: Put the coating sample in a constant temperature and humidity box to conduct a simulated performance aging test, observe its performance changes, to evaluate its weather resistance.
Construction performance: A rheometer is used to test the coating sample and obtain its rheological performance parameters, such as viscosity and shear modulus, to evaluate its construction performance.