OasisLMS

A growing trend in the concrete industry is to provide less prescriptive and more performance-based concrete mixture specifications to allow contractors more workable materials and methods to meet concrete placement and performance expectations. Advantages and disadvantages of using performance-based concrete mixture specifications will be presented. As part of the discussion of performance-based specifications, some examples of concrete bridge deck placements from 2004 to 2014 using both performance-based and prescriptive-based concrete mixture specifications are discussed to compare and contrast the pros and cons of using either type of specification in bridge deck construction.

The contents of this course include three recorded presentations from the ACI 2018 Fall Convention:
• Eliminating Prescriptive Requirements for Concrete is an Easy First Step, by Colin Lobo, NRMCA
• Performance Requirements for Ready Mixed Concrete in North America—Are We There Yet? by Oscar Antommattei, Kiewit Engineering Group
• Prescription to Performance, by Joshua Edwards, AVR Inc.

1. Discuss the goals of performance-based concrete mixture specifications.
2. Compare and contrast prescriptive-based and performance-based specifications and explain how prescriptive specifications may lead to less economical, less durable concrete.
3. Recall methods to implement performance-based concrete mixture specifications.
4. Describe the advantages of performance-based concrete specifications when producing the many different examples of bridge deck construction projects.

Study the materials included in this module. Then, complete and pass the corresponding 10-question quiz with a score of 80% or higher to receive a certificate for 0.1 CEU (1.0 PDH).
Continuing Education Credit: 0.1 CEU (1.0 PDH)
Approved AIA and ICC
Access Period: 30 days