What does AASHTO stand for in aggregate testing?

AASHTO stands for the American Association of State Highway and Transportation Officials. This organization is vital in the field of transportation and highway engineering, and it plays a significant role in developing standards and guidelines for various materials and methods, including those related to aggregate testing.

AASHTO's standards are widely used across the United States and provide a framework for testing aggregates to ensure they meet necessary specifications for use in construction projects. This ensures that the aggregates will perform adequately in their intended applications, contributing to the safety and durability of transportation infrastructure.

The other options do not accurately represent the organization involved in aggregate testing, leading to a misunderstanding of the entity's focus and scope in the transportation sector.