On-Demand Course: Why Slabs Curl Part 1 & 2

Price: $ 39.00 USD

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INSTRUCTIONS: 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 (equivalent to 1.0 PDH). This online course is not approved for credit with the Florida Construction Industry Licensing Board (CILB).

Continuing Education Credit: 0.1 CEU (1 PDH)

Access Period: 30 days


This module is based on articles from Concrete International magazine. They are intended to provide design and construction professionals with basic information about curling in concrete slabs. The articles present information about moisture and temperature gradients, shrinkage and expansion mechanisms, recommendations to reduce or control curling, and much more.


Document Details

Publication Year: 2008


Categories: Slabs

Formats: Online Learning

Table of Contents

Learning Objectives:

1. Understand how subbase conditions affect curling;

2. Recognize how slabs respond to relative humidity;

3. Describe how slab construction can affect moisture-sensitive floor coverings; and

4. Explain why the method and duration of curing of concrete slabs is important.


Any applicable errata are included with individual documents at the time of purchase. Errata are not included for collections or sets of documents such as the ACI Collection. For a listing of and access to all product errata, visit the Errata page.

Return/Exchange Policy

Printed / Hard Copy Products: The full and complete returned product will be accepted if returned within 60 days of receipt and in salable condition. A 20% service charge applies. Return shipping fees are the customer’s responsibility.

Electronic /Downloaded Products & Online Learning Courses: These items are not eligible for return.

Subscriptions These items are not eligible for return.

Exchanges: Contact ACI’s Customer Services Department for options (+1.248.848.3800 – ACICustomerService@concrete.org).