Making use of admixture selection tools
Service life demands continue to increase as customers realize the importance of building lasting structures for economic, safety, and environmental reasons. While there are multiple approaches to boost service life, one of the most economical methods continues to be corrosion inhibiting admixtures. Ultimately, evaluating project priorities, understanding admixture characteristics with the help of industry guidelines, and comparing service life prediction results are excellent tools to help engineers specify the right corrosion inhibiting admixture for the job.
Notes
1 Read the article by Kayla Hanson, PE, “Understanding Carbonation.” Precast Inc. Magazine, July-August (Carmel, IN: National Precast Concrete Association, 2015).
2 Refer to the guide, “ACI PRC-222-19: Guide to Protection of Metals in Concrete Against Corrosion” (Farmington Hills, MI: American Concrete Institute, 2019).
3 Refer to the guide, “ACI 212.3R-16: Report on Chemical Admixtures for Concrete,” (Farmington Hills, MI: American Concrete Institute, March 2016): page 35-41.
4 See the standard, “ASTM C1582/C1582M-11(2017)e1 Standard Specification for Admixtures to Inhibit Chloride-Induced Corrosion of Reinforcing Steel in Concrete.” (West Conshohocken, PA: ASTM International, July 28, 2017).
5 Refer to ACI 212.3R-16, page 36.
6 Refer to ACI 212.3R-16, page 36.
7 Refer to ACI 212.3R-16, page 37.
8 Refer to ACI 212.3R-16, page 36-37.
9 See Table 13.3 on ACI 212.3R-16, page 39.
10 MCI®-2005; learn more and browse the product catalog at www.biopreferred.gov/BioPreferred/.
11 Consult the American Engineering Testing, Inc. “Report of Concrete Corrosion Inhibitor Testing,” AET Report 05-01171 for Cortec Corporation (St. Paul, MN: August 13, 2003).
12 Refer to the document by Xu Yongmo, She Hailong, and Boris A. Miksic. “Comparison of Inhibitors MCI and NaNo2 in Carbonation Induced Corrosion.” Materials Performance (Houston, TX: NACE International, January 2004), page 42-46.
13 Refer to ACI 212.3R-16, page 38.
14 Refer to ACI 212.3R-16, page 40.
15 Find STADIUM prediction modeling software at simcotechnologies.com/what-we-do/stadium-technology-portfolio/.
16 Find CASLE prediction modeling software at www.wje.com/expertise/services/detail/corrosion-assessment-and-service-life-evaluation-casle.
17 Find LIFE-365 prediction modeling software at www.life-365.org/.
18 See the research by Nagi, Mohamad, PE, Ph.D. “Report on the corrosion threshold of MCI-2005 in normal concrete reinforced with black steel based on ASTM G109 results.” (American University in Dubai, December 17, 2012).
19 Consult the American Engineering Testing, Inc. “Report of Corrosion Inhibitor Testing,” AET Report 05-00777 for Cortec Corporation (St. Paul, MN: August 8, 2011).
20 For instructions on MCI inputs for LIFE-365, see www.cortecmci.com/wp-content/uploads/2017/09/LIFE-365-Inputs-for-MCI2c-5.27.15.pdf
21 Read the article by Julie Holmquist, Andrea Moore, and Casey Heurung, “Bio-based Corrosion Inhibitors: Building for resiliency in marine environments,” The Construction Specifier (September 2019), page 18-24.
Julie Holmquist has been writing content for Cortec Corporation since November 2015. She enjoys learning about the science behind corrosion prevention and the many industries affected. She can be reached via email at jholmquist@cortecvci.com.
Ash Hasania is the Migrating Corrosion Inhibitors (MCI) technical sales and market manager for Cortec Corporation. He is a civil, water, and environmental engineer who has been focusing on the use of MCI for concrete since 2013. He can be reached via email at ahasania@cortecvci.com.
Lisa Marston is a regional technical service engineer at Cortec Corporation, specializing in MCI for concrete. Marston holds a BSE in chemical engineering. She can be reached at Lmarston@cortecvci.com.
