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Dynamic Response of Retrofitted Masonry Walls for Blast Loading |
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| Authors: | Girum S Urgessa Arup K Maji |
| Affiliation: | 1Assistant Professor, Dept. of Civil, Environmental, and Infrastructure Engineering, George Mason Univ., 4400 University Dr. MS 6C1, Fairfax, VA 22030 (corresponding author). E-mail: gurgessa@gmu.edu 2Professor and Chair, Dept. of Civil Engineering, Univ. of New Mexico, MSC01-1070, Albuquerque, NM 87131. E-mail: amaji@unm.edu |
| Abstract: | A full-scale blast test was conducted on eight masonry walls reinforced with two and four layers of carbon fibers and two types of polymer matrices. The walls were then subjected to a 0.45-kg pentolite booster suspended from the ceiling of a test structure. The pressure-time history caused by the blast and the resulting displacement response were measured during the test. This paper presents a summary of the test program and the corresponding results from a nonlinear single degree of freedom analysis. The results provide a basis for determining effective means of retrofitting existing masonry walls and designing new structures to withstand blast loads. The paper also outlines a fiber-reinforced polymer retrofit design procedure for walls subjected to blast loading. |
| Keywords: | Blast loads Concrete Masonry Finite element method Fiber reinforced polymers Full-Scale tests Walls |