Handling Concrete Specifications,
Low Strength Problems and Mixture Submittals

PURPOSE AND BACKGROUND Dealing with concrete specifications, troubleshooting low strength problems and ensuring proper mixture submittals can be expensive and time consuming. This one-day course will get into code and specification  requirements (ACI 318, 301, ASTM C94) governing ready mixed concrete including exposure categories in the ACI Building Code 318-11. It will suggest specification revisions for all around benefits in performance and cost which is based on a specification guideline document. The guideline document is the result of review of numerous concrete specifications (Section 03300) belonging to large owners and has been reviewed and supported by the NRMCA Research Engineering and Standards Committee.

Troubleshooting low strength problems is perhaps the primary reason for back charges for a concrete company. This could be almost entirely- avoided by knowledgeable concrete technical personnel. The course will cover the analysis of strength test results to identify causes for low strength problems including technician competence and provide guidance to track compliance with specification requirements. Non-destructive testing techniques like the Rebound Hammer, core testing, evaluating core test results for acceptance and assignment of responsibility will be discussed. Another part of this course provides necessary details required for an efficient concrete mixture submittal following the ACI 318 flowchart for Selection of Concrete Mixtures. Analysis of a typical mixture submittal will be conducted as a group exercise.   

Thursday, november 2, 2017
Salt Lake City, Utah