Title:
Concrete Q&A: Epoxy-Coated Reinforcement and Cryogenic Temperatures
Author(s):
Publication:
Concrete International
Volume:
42
Issue:
5
Appears on pages(s):
68
Keywords:
DOI:
10.14359/51725800
Date:
5/1/2020
Abstract:
I’m designing a foundation to support a liquefied natural gas (LNG) tank in a marine environment, and I want to use epoxy-coated reinforcement (ECR). In case of a major spill, the pier will be exposed to LNG at cryogenic temperatures. However, per Section 4.7.1 of ACI 376-11,1 deformed reinforcement at service temperatures equal or greater than 0°F (–18°C) must be uncoated. How can I meet the code and protect the reinforcement?
Related References:
1. ACI Committee 376, “Code Requirements for Design and Construction of Concrete Structures for the Containment of Refrigerated Liquefied Gases (ACI 376-11) and Commentary,” American Concrete Institute, Farmington Hills, MI, 2011, 149 pp.
2. ASTM A706/A706M-16, “Standard Specification for Deformed and Plain Low-Alloy Steel Bars for Concrete Reinforcement,” ASTM International, West Conshohocken, PA, 2016, 7 pp.
3. CAN/CSA G30.18-M92 (R2007), “Billet-Steel Bars for Concrete Reinforcement,” CSA Group, Canada, 1992. (withdrawn, superseded by G30.18-09)
4. “Technical Data Sheet from Arbed,” Krybar, Jan. 1981.
5. “Production and Properties of Low Carbon 25Mn 5Cr 1Ni Austenitic Steel,” Nippon Research Report, Nippon Steel Corporation, 1980, pp. 1-19.
6. “Technical Document No. 221-037,” Nippon Kokan Corporation, Ltd., 1980.
7. Dodge, E., “How Dangerous Is LNG?,” Dec. 22, 2014. Breaking Energy website: https://breakingenergy.com/2014/12/22/how-dangerous-is-lng/. Accessed Mar. 27, 2020.