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http://dx.doi.org/10.4334/JKCI.2010.22.1.093

Experimental Study on Blast Resistance Improvement of RC Panels by FRP Retrofitting  

Ha, Ju-Hyung (Dept. of Civil and Environmental System Engineering, Yonsei University)
Yi, Na-Hyun (Dept. of Civil and Environmental System Engineering, Yonsei University)
Kim, Sung-Bae (Dept. of Civil and Environmental System Engineering, Yonsei University)
Choi, Jong-Kwon (Material Division, Hyundai Institute of Construction Technology)
Kim, Jang-Ho Jay (Dept. of Civil and Environmental System Engineering, Yonsei University)
Publication Information
Journal of the Korea Concrete Institute / v.22, no.1, 2010 , pp. 93-102 More about this Journal
Abstract
Recently, FRP usage for strengthening RC structures in civil engineering has been increasing. Especially, the use of FRP to strengthen structures against blast loading is growing rapidly. To estimate FRP retrofitting effect under blast loading, blast tests with nine $1,000{\times}1,000{\times}150\;mm$ RC panel specimens, which were retrofitted with carbon fiber reinforced polymer (CFRP), Polyurea, CFRP with Poly-urea and basalt fiber reinforced polymer (BFRP) have been carried out. The applied blast load was generated by the detonation of 15.88 kg ANFO explosive charge at 1.5 m standoff distance. The data acquisitions not only included blast waves of incident pressure, reflected pressure, and impulse, but also included central deflection and strains at steel, concrete, and FRP surfaces. The failure mode of each specimen was observed and compared with a control specimen. From the test results, the blast resistance of each retrofit material was determined. The test results of each retrofit material will provide the basic information for preliminary selection of retrofit material to achieve the target retrofit performance and protection level.
Keywords
blast; standoff distance; CFRP; BFRP; Poly-urea;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
연도 인용수 순위
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