Comparative study methods for flexural strengthening design of reinforced concrete beam using NSM-FRP material approach ACI 440.2R-08 and ISIS (Canada)
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Keywords:
Near-surface-mounted
fiber reinforced polymer
flexural resistance
external bonded
flexural strengthening
Abstract
Flexural strengthening of concrete beam using near surface mounted (NSM) FRP method has solved existing problems of external bonded (EB) method because FRP materials are better protected from external environment. The article presents analysis and comparison from two design guidelines for flexural strengthening concrete beam using NSM method as ACI 440.2R-08(America) [3] and ISIS (Canada) [13]. The output analysis shows that ACI 440.2R-08approaches provide results of flexural resistance after strengthening higher than those by ISIS from about 31,1% to 42,6%. In addition, when comparing economic efficiency of two strengthening methods NSM-FRP and EB-FRP approach ACI 440.2R-08guidelines, NSM-FRP method shows lower cost than EB-FRP method from about 13,7% to 58,2% with equivalent flexural strength.
References
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Published
Nov 30, 2018
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How to Cite
Trần Văn Huy*; ThS. Nguyễn Văn Ngôn; Lê Thanh Phong, Phạm Trường Hiếu. “Comparative Study Methods for Flexural Strengthening Design of Reinforced Concrete Beam Using NSM-FRP Material Approach ACI 440.2R-08 and ISIS (Canada)”. The University of Danang - Journal of Science and Technology, vol. 11, no. 132.1, Nov. 2018, pp. 45-49, https://jst-ud.vn/jst-ud/article/view/1312.
