Title: Evaluation of corrosion-resistant basalt-fiber-reinforced polymer bars and carbon-fiber-reinforced polymer grid reinforcement to replace steel in precast concrete underground utility vaults
Date Published: September-October 2016
Volume: 61
Issue: 5
Page Number: 69-76
Authors: Paul Archbold and Gobithas Tharmarajah
https://doi.org/10.15554/pcij61.5-02
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Abstract
Underground utility vaults are widely used to house utilities and are conventionally designed using steel reinforcement. These structures are often designed with thicker cover concrete in an attempt to prevent the corrosion of steel that is exposed to corrosive environments. Replacing steel with corrosion-resistant fiber-reinforced-polymer materials is beneficial both for production and maintenance. Ultimate and service load behaviors of panels reinforced with basalt-fiber-reinforced polymer (BFRP) and carbon-fiber-reinforced-polymer (CFRP) grid are discussed in this paper. Failure load and failure mode were used to evaluate the ultimate load behavior; deflection and crack width were used to examine the service load behavior of the tested panels. Test results show that corrosion-resistant reinforcing materials, such as BFRP and CFRP grid, can replace steel in underground utility vaults. Test results are compared with test results from conventional steel-reinforced panels and unreinforced panels and verified against design code recommendations.
References
American Composites Manufacturers Association. 2005. “Overview of the FRP Composites Industry—A Historical Perspective.” China FRP Info Net. Accessed July 4, 2016. http://www.cnfrp.net/english/1/echo.php?id=5.
Taerwe, L., and S. Matthys. 1999. “FRP for Concrete Construction: Activities in Europe.” Concrete International 21 (10): 33–36.
ACI (American Concrete Institute) Committee 440. 2007. Report on Fiber-Reinforced Polymer (FRP) Reinforcement for Concrete Structures. ACI 440R-07. Farmington Hills, MI: ACI.
Garden, H. 2004. “Use of Advanced Composites in Civil Engineering Infrastructure.” Proceedings of the Institution of Civil Engineers – Structures and Buildings 157 (6): 357–368.
Nanni, A., T. Okamoto, M. Tanigaki, and M. Henneke. 1992. “Hybrid (FRP + Steel) Reinforcement for Concrete Structures.” In Materials: Performance and Prevention of Deficiencies and Failures, Proceedings of the Materials Engineering Congress, August 10–12, 1992, Atlanta, GA. New York, NY: American Society of Civil Engineers.
El-Salakawy, E., and B. Benmokrane. 2004. “Serviceability of Concrete Bridge Deck Slabs Reinforced with Fiber-Reinforced Polymer Composite Bars.” ACI Structural Journal 101 (5): 727–736.
Tharmarajah, G., S. E. Taylor, D. J. Cleland, and D. Robinson. 2014. “Corrosion-Resistant FRP Reinforcement for Bridge Deck Slabs.” Proceedings of Institution of Civil Engineers – Bridge Engineering 168 (3): 208–217.
Fouad, H. F., A. M. Shalaby, S. G. Palmer, R. Albanese, and M. Gallow. 2015. “FRP-Reinforced Spun Concrete Poles in Flexure.” PCI Journal 60 (1): 87–97.
CEN (European Committee for Standardization). 2004. Eurocode 2: Design of Concrete Structures—Part 1-1 General Rules and Rules for Buildings. EN 1992-1-1. Brussels, Belgium: CEN.
CEN. 2006. Testing Hardened Concrete. Compressive Strength of Test Specimens. EN 12390-3. Brussels, Belgium: CEN.
ACI Committee 440. 2006. Guide for the Design and Construction of Structural Concrete Reinforced with FRP Bars. ACI 440.1R‐06. Farmington Hills, MI: ACI.