On-Demand Course: Chemical Admixtures for Concrete: Shrinkage-Reducing, Shrinkage-Compensating, and Permeability-Reducing Admixtures

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)

Approved by AIA and ICC

Access Period: 30 days


This module is based on Chapters 12 and 15 from ACI 212.3R-16, “Report on Chemical Admixtures for Concrete.” Chapter 12 addresses the use of shrinkage-reducing admixtures (SRAs) and shrinkage-compensating admixtures (SCAs) to help mitigate shrinkage cracking in concrete. This chapter also covers material composition of SRAs and SCAs and the applications for which they are ideally suited. Dosing suggestions and effects on fresh and hardened concrete are also addressed.

Chapter 15 covers the use of permeability-reducing admixtures (PRAs) to improve concrete durability through controlling moisture movement, reducing chloride ion permeability, and enhancing autogenous sealing. This chapter also describes the various material categories of PRAs, and discusses the selection of appropriate PRAs and proportioning recommendations for specific service conditions and applications.


Document Details

Publication Year: 2017


Categories: Admixtures, Cracking, Durability

Formats: Online Learning

Table of Contents

Learning objectives:

1. Describe how shrinkage-reducing admixtures (SRAs) and shrinkage-compensating admixtures (SCAs) work to mitigate shrinkage cracking.

2. Explain the effects of SRAs and SCAs on fresh and hardened concrete.

3. Recognize ideal SRA dosing recommendations to obtain a desired level of shrinkage without adverse effects.

4. Describe how permeability-reducing admixtures (PRAs) can work to reduce water transmission through concrete.

5. Describe the exposure categories of PRAs and in which conditions they are best suited.

6. Identify test methods used to evaluate PRAs.


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).