Title:
Tech Spotlight: An Economical Solution for Strengthening Concrete Columns
Author(s):
Mo R. Ehsani
Publication:
Concrete International
Volume:
45
Issue:
2
Appears on pages(s):
33-37
Keywords:
laminate, strength, retrofit, capacity
DOI:
10.14359/51738527
Date:
2/1/2023
Abstract:
Reinforced concrete columns in older buildings may require strengthening because of loss of capacity due to corrosion of reinforcing steel or poor quality of the original construction. This article describes a method for enhancing both the axial and flexural capacity of such columns using a fiber-reinforced polymer laminate and provides examples of two retrofit options.
Related References:
1. Saadatmanesh, H., and Ehsani, M.R., “Fiber Composite Plates Can Strengthen Beams,” Concrete International, V. 12, No. 3, Mar. 1990, pp. 65-71.
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3. Ehsani, M.R., “Reinforcement and Repair of Structural Columns,” U.S. Patent No. US 9,890,546 B2, Feb. 13, 2018, 13 pp.
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6. ACI Committee 440, “Guide for the Design and Construction of Externally Bonded FRP Systems for Strengthening Concrete Structures (ACI 440.2R-17),” American Concrete Institute, Farmington Hills, MI, 2017, 112 pp.
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