AASHTO Publications Concrete Series: Incompatibility in Concrete Pavement Systems (1 PDH) TC3MS006-15-T1

This course offers professional development hours (PDHs). You will see the PDHs on your course completion certificate, which also serves as documentation of your attendance. PDH requirements vary, therefore, it is up to you to determine whether or not this particular course qualifies under your State or board requirements. Course overview: The materials used in portland cement concrete (PCC) play an extremely valuable role in the performance of the concrete. This training covers the incompatibilities of materials used in PCC. Although certain materials may be perfectly acceptable on their own, when they are combined they are not compatible with each other. This can cause early stiffening, retardation, cracking, and the lack of a quality of air void system. This module is part of a curriculum from the "Integrated Materials and Construction Practices for Concrete Pavement" manual developed through the National Concrete Pavement Technology Center at Iowa State University. The other Web-based training modules include: • Design of Pavement (TC3MS003-15-T1) • Hardened Concrete Properties – Durability (TC3MS004-15-T1) • Fundamentals of Materials Used for Concrete Pavements (TC3MS005-15-T1) • Mix Design Principles (TC3MS007-15-T1) • Early Age Cracking (TC3MS008-15-T1) • Basics of Cement Hydration (TC3MS009-15-T1) • Fresh Concrete Properties (TC3MS010-15-T1) • Construction of Concrete Pavements (TC3MS011-15-T1) • QCQA for Concrete Pavements (TC3MS012-15-T1) • Troubleshooting for Concrete Pavements (TC3MS013-15-T1) Training level: This training is recommended for the Transportation Curriculum Coordination Council levels I and II. Target audience: This training is designed for agencies and their industry counterparts involved in the process to assure that the materials used in PCC meet specification requirements and are compatible to provide good, durable concrete. It is applicable to anyone desiring a better understanding of the materials used in PCC. Learning outcomes: Upon completion of the course, participants will be able to: • Identify the causes of incompatible conditions leading to early stiffening or setting and occasional early age cracking; • Recognize the importance to use the correct air void system; and • Describe test methods used to identify incompatibilities.