GB/T 30805-2014 《Thermal insulating products for building applications—Determination of short term water absorption by partial immersion》 Related products

GB/T 30805 - 2014 Specifies the determination of short-term water absorption of thermal insulation products for buildings. It uses the partial immersion method to simulate the scene of partial contact with water in the actual use of thermal insulation products. The standard specifies the test equipment, such as suitable sinks and weighing devices. Detailed sample preparation, including dimensional measurement and initial mass recording. During the test, the immersion depth, time and water temperature are specified. Short-term water absorption is calculated by periodic measurement of sample mass changes. The standard provides a basis for evaluating the water resistance of thermal insulation products, which helps to select thermal insulation materials with good waterproof performance in construction projects, avoid reducing the thermal insulation effect due to water absorption, and ensure the long-term effective operation of building thermal insulation systems.