The contents of this course include two recorded presentations from the ACI 2016 Fall Convention:
• Development of Test Methods to Address Various Mechanisms of Sulfate Attack, R. Doug Hooton, University of Toronto, Toronto, Ontario, Canada
• The Effects of Supplementary Cementitious Materials and Exposure Temperature on External Sulfate Attack by Ashlee Allison, GEMTEC Limited, University of New Brunswick
INSTRUCTIONS: 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)
Approved AIA and ICC
Access Period: 30 days
This course explores deterioration of concrete due to sulfate attack, a complex process characterized by multiple manifestations including volume expansion, cracking, spalling, softening of the cementitious matrix creating mushy concrete. Sulfate attack can be classified as internal or external to the cementitious matrix. The underlying damage of sulfate attack can be chemical or physical deterioration. The course scope involves theoretical and experimental aspects of different forms of sulfate attack as well as case studies. This course is an effort to compile current developments in research and standards, and educate practitioners and researchers about this concrete durability issue and its underlying mechanisms. This course also explains the effects of supplementary cementitious materials on mitigating external sulfate attack on concrete exposed to sulfates.
Table of Contents
1. Identify laboratory tests – concrete specimen or mortar bar tests – that measure volume expansion in specimens in sulfate environments over different time periods—short-term and long-term tests.
2. Describe mechanisms that initiate internal and external sulfate attack that cause deterioration or expansion in concrete.
3. Explain the characteristics of different sulfate attacks—ettringite sulfate attack, physical sulfate attack, and thaumasite sulfate attack.
4. Describe effects of tested blended cement mortar bars and cements with supplementary cementitious materials including fly ash, silica fume, metakaolin, and cement slag, with regards to sulfate attack deterioration over long-term testing.
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.
Exchanges: Contact ACI’s Customer Services Department for options (+1.248.848.3800 – ACICustomerService@concrete.org).