AASHTO R 42-06 (2020) PDF Download

AASHTO R 42-06 (2020) is a standard practice that outlines the procedures and requirements for developing a quality assurance plan for hot-mix asphalt (HMA). This plan is crucial for ensuring the control, verification, and acceptance of HMA pavement. The standard covers both quality control and acceptance aspects of HMA production and placement.

The quality control plan outlined in this standard establishes minimum requirements and activities for a contractor's quality control system. It specifies the necessary inspections and tests to confirm the conformity of materials and products to the specifications. The use of the Superpave gyratory compactor and the evaluation of the volumetric properties of the mix are highlighted as important methods of field quality control.

Additionally, this standard practice provides a framework for an agency's acceptance plan for HMA projects. It sets out the requirements for assessing and accepting an HMA project, ensuring that it meets the necessary standards.