What does GMM stand for in asphalt terminology?

GMM stands for "Gravity mixture maximum" in asphalt terminology. This term is used to describe the maximum specific gravity of asphalt mixtures, which is an important measurement in the design and quality control of asphalt pavements. The GMM value provides insight into the density of the compacted asphalt mixture and helps engineers determine how much air voids are present within the mixture.

Understanding the GMM is critical for ensuring that the asphalt has the appropriate properties for durability and performance. It directly informs decisions on asphalt mixture design and helps to achieve optimum performance in real-world conditions, considering factors such as load-bearing capacity and resistance to deformation. This measurement is essential in adhering to specification requirements and facilitating effective quality assurance processes in asphalt paving projects.