GB/T 8813 - 2020 Specifies the compressive performance measurement of rigid foam plastics. It specifies the preparation requirements of the sample to ensure that it can represent the material characteristics, specifies the required test equipment, such as the accuracy of the Universal Testing Machine, etc. Detailed compression performance testing process, including loading speed, loading method, until the material breaks or reaches a specific compressive strain. According to this standard, the compressire strength, compressive resilience modulus and other parameters of rigid foam can be accurately determined, providing performance data for its application in construction, Encasement and other fields, and assisting product design and quality control.