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Fig. 16: Shows a completed section that needed to look like the original old structure Photo by Rick Conrow Ray Schallom III is a shotcrete application specialist and President of RCS Consulting & Construction Co. Inc. He has 40 years of experience as a Project Manager, Owner, and Superintendent. Schallom works with state DOT departments on their shotcrete specifications and trains engineering company inspectors in the field of shotcrete. He is a Past President of the American Shotcrete Association; past Chair of the ASA Education Committee; and a member of the ASA Publications, Underground, Marketing, Sustainability, and Pool & Recreational Shotcrete Committees. He is also a member of ACI Committee 506, Shotcrete; C660, Shotcrete Nozzleman Certification; and several ACI 506 Subcommittees: Qualification of Shotcrete for Special Projects, Specifications, Evaluation, Guide, Underground Specification, Fiber Reinforced, and Pools. With over 36 years of shotcrete nozzling experience in wet- and dry-mix handheld and robotic applications, Schallom is a retired ACI Certified Nozzleman in the wet- and dry-mix process for vertical and overhead applications, as well as an ASA-approved Shotcrete Educator, ASA-approved Shotcrete Underground Educator, and an ACI-approved Shotcrete Examiner for wet and dry applications. He is also a member of ASTM Committee C09, Concrete and Concrete Aggregates, and Subcommittee C09.46, Shotcrete. Jessi Meyer received her BS in chemistry and business from the University of Wisconsin-Eau Claire, Eau Claire, WI, and has over 17 years of experience in the construction and corrosion industries. During that time, she has held positions in technical service, sales, and is currently a Vice President of Sales at Cortec Corporation. Meyer holds six patents in the field of corrosion inhibitors used in the concrete/construction market. She has authored several technical papers through NACE International and other technical forums. She is also a member of the International Concrete Repair Institute (ICRI) and the American Concrete Institute (ACI). Julie Holmquist is a Content Writer at Cortec Corporation, where she studies and writes about corrosion-inhibiting technology and its applications in industry. Her work has been published in numerous industry magazines since joining Cortec in 2015. Prior to that, she did freelance and educational writing on a variety of topics for print and online publications. Development Company and the shotcrete contractor was KHM INC. of Binghamton, NY. CONCLUSIONS Migrating corrosion inhibitor technology has been an important discovery in the protection of reinforced concrete from corrosion. It is compatible with both form-and-pour or shotcreted concrete, increasing the convenience of applying corrosion inhibitors to specialized structures or in special repair situations. The technology includes bio-based options and offers compatibility with CP and potable water structures. Migrating corrosion inhibitors have been used in a variety of shotcrete applications and have even shown advantages for achieving required concrete strength in contrast to alternative corrosion inhibitors. Most importantly, they protect reinforced shotcrete structures from corrosion at a very low dose without affecting important concrete properties such as strength and freezing-and-thawing durability. References 1. Miksic, B.A., Improving Durability of Infrastructure with Migratory Corrosion Inhibitors (MCI®) Handbook, Cortec Corporation, Saint Paul, MN, 2014, pp. 7-8, 10. 2. ASTM C1582/C1582M, “Standard Specification for Admixtures to Inhibit Chloride-Induced Corrosion of Reinforcing Steel in Concrete,” ASTM International, West Conshohocken, PA. 3. Schaefer, G., “Admixture to Inhibit Chloride-Induced Corrosion of Reinforcing Steel in Concrete (ASTM C1582) Concrete Properties Testing Final Report,” TCG # 09145, Tourney Consulting Group, Kalamazoo, MI, Feb. 8, 2011. 4. Abed, K.; Nagi, M.; Meyer, J.; and Pynn, C., “Evaluation of Interactions between Cathodic Protection and Corrosion,” Presentation at NACE Concrete Service Life Extension Conference, New York City, NY, June 27-29, 2017. 5. American Engineering Testing, Inc., “Report of Concrete Corrosion Inhibitor Testing,” Aug. 13, 2003, 10 pp. 6. MBT Australia Pty Limited, “Repair of Crib Point Jetty,” ICRI 2001 Project Award Winner, International Concrete Repair Institute, St. Paul, MN, https://icri. site-ym.com/?AOE01_CribPointJetty. (last accessed July 3, 2017) www.shotcrete.org Summer 2017 | Shotcrete 17


2017SummerShotcreteEMag
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