AASHTO M 358

Purpose: AASHTO M 358 provides a framework for balanced mix design of asphalt mixtures.
What it covers: The specification combines volumetric criteria with performance tests selected to address rutting, cracking, and other agency priorities.
Why it matters: Balanced design helps teams confirm that a mixture is not strong against one distress while becoming vulnerable to another.
Important detail: Agencies select the performance tests, conditioning, thresholds, and approval process. The required equipment depends on the chosen methods.
This overview is a simple introduction. Use the current AASHTO M 358 standard, applicable test methods, and state DOT and project requirements when developing a balanced mix design.
Related methods: AASHTO M 320, AASHTO M 323, AASHTO M 325, AASHTO M 339, Browse all test methods