GB/T 44357-2024 《Test methods of evaluation of performance grades for petroleum asphalt》 Related products

The GB/T 44357-2024 standard specifies the performance evaluation test method for petroleum asphalt, aiming to provide a unified test basis for solid, semi-solid and liquid asphalt for different purposes. The standard describes the test conditions, sampling, sample preparation, test methods and result evaluation in detail, covering key test techniques such as swirl/spin film heating aging and pressure heating aging. At the same time, the standard introduces definitions of relevant terms, such as composite shear modulus, phase angle, etc., providing a clear framework for research and application. Institutions using this standard are responsible for their own safety measures to ensure operational safety. This standard is of great significance for the quality control and performance evaluation of asphalt materials.