NRMCA Publication 2PE004, Guide to Improving Specifications for Ready Mixed Concrete, was published in 2009 based on NRMCA review and recommendations to specifications used in practice. This document has been revised in June 2015 and covers the requirements in the recently released ACI 318-14, Building Code Requirements for Structural Concrete. The document follows the format used in typical Office Master Specification, Section 03300, and only includes those sections pertinent to ready mixed concrete. The document suggests specification language and includes notes or information to the architect/engineer as rationale and to support the suggested language.

The document has been developed, reviewed and approved by the NRMCA Research Engineering and Standards (RES) Committee. The intent of this document is to minimize prescriptive provisions used in actual specifications; make them more consistent with industry standards and to evolve toward performance-based specifications. NRMCA members are encouraged to provide copies of this document to design firms that they work with for their consideration. Suggestions to improve this document for future revisions are welcome and should be directed to the NRMCA Engineering Division.