AASHTO R 18-18 PDF Download

AASHTO R 18-18 is a standard recommended practice that provides a comprehensive framework for establishing and implementing a quality system for construction materials testing laboratories. It sets out the criteria and guidelines that CMT laboratories should adhere to in order to ensure the accuracy, reliability, and repeatability of their testing procedures.

The standard specifically applies to testing areas such as soil, aggregate, asphalt binder, cutback asphalt, emulsified asphalt, asphalt mixtures, hydraulic cement, Portland cement concrete, unit masonry, metals, plastic pipe, and sprayed fire-resistive material. It outlines the essential elements of a quality management system that laboratories should have in place, including quality policies, organizational structure, document control, and personnel qualifications.

The goal of AASHTO R 18-18 is to promote consistency and standardization in construction materials testing by providing a systematic approach to quality assurance. By implementing the practices outlined in the standard, CMT laboratories can enhance their capabilities, improve customer satisfaction, and ensure compliance with relevant regulations and industry best practices.