Improving the Performance of Concrete with Internal Curing (Part 2)

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Internal curing is a method of curing the concrete from the inside by “hiding” water in the lightweight aggregates. The benefits of internal curing include a well distributed network of water to cure as needed throughout the mixture. A long term benefit is the potential extension of the concrete’s service life. Mixture proportioning for concrete designed with internal curing is as simple as replacing a portion of the sand with prewetted, fine lightweight aggregate. Part 2 includes the presentation covering “Shrinkage and Shrinkage Cracking.”

1. Understand how shrinkage relates to stress development and how stress development relates to cracking.
2. Identify the different types of shrinkage and their causes.
3. Explain why low w/cm are prone to cracking.
4. Describe how IC can reduce the potential for cracking.

Read and 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 by AIA (LU/HSW) and ICC
Access Period: 30 days