Guide to Improving Specifications for Ready Mixed Concrete was developed by the National Ready Mixed Concrete Association and its members through the Research, Engineering and Standards (RES) Committee. The document evolved based on comments developed while reviewing actual project specifications used in the concrete construction industry.

Written as a guide for ready mixed concrete or contractor personnel who are responsible for compliance with project specifications, the guide is also suitable for design professionals who develop project specifications. This document proposes specification clauses and includes accompanying commentary as guidance, which emphasizes the fundamental concepts of specifications for ready mixed concrete as addressed in industry standards published by ACI or ASTM International. Provisions of ACI 318-14 (Building Code Requirements for Structural Concrete) are incorporated, relating to requirements concerning concrete ingredients and materials, mixture design, production, and delivery.

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