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Article

Fiber Reinforced Polymer and Polypropylene Composite Retrofitting Technique for Masonry Structures

1
Department of Civil and Environmental Engineering, College of Engineering, King Faisal University, Al-Ahsa 31982, Saudi Arabia
2
International Center for Urban Safety Engineering, Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan
*
Author to whom correspondence should be addressed.
Academic Editors: Alper Ilki and Masoud Motavalli
Polymers 2015, 7(5), 963-984; https://doi.org/10.3390/polym7050963
Received: 25 March 2015 / Accepted: 18 May 2015 / Published: 22 May 2015
(This article belongs to the Collection Fiber-Reinforced Polymer Composites in Structural Engineering)
In the current research work, an attempt is made to increase the seismic capacity of unreinforced masonry (URM) structures by proposing a new composite material which can improve shear strength and deformation capacity of URM wall systems. Fiber Reinforced Polymer (FRP) having high tensile and shear stiffness can significantly increase in-plane and out-of-plane strength of masonry walls, but, inherently, FRP strengthened wall systems exhibit brittle failure under extreme seismic loading. Polypropylene (PP-band) is a low cost material with sufficient ductility and deformation capacity. Keeping in view the behavior of FRP and PP-band, a composite of FRP and PP-band is proposed for retrofitting of URM walls. Mechanical behavior of the proposed composite material is assessed by carrying out an in-plane diagonal compression test and an out-of-plane bending test on twenty-five 1/4-scaled masonry wall panels. Experimental plan for each panel, URM, PP-band retrofitted, FRP retrofitted and FRP + PP-band retrofitted masonry, is diagonal compression test and three-point bending test. Experimental results have determined that FRP + PP-band composite increased, not only the initial peak strength, but also the ductility, deformation capacity and residual strength of URM wall systems. View Full-Text
Keywords: rehabilitation; masonry; composite materials; polypropylene; fiber reinforced polymer rehabilitation; masonry; composite materials; polypropylene; fiber reinforced polymer
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MDPI and ACS Style

Umair, S.M.; Numada, M.; Amin, M.N.; Meguro, K. Fiber Reinforced Polymer and Polypropylene Composite Retrofitting Technique for Masonry Structures. Polymers 2015, 7, 963-984. https://doi.org/10.3390/polym7050963

AMA Style

Umair SM, Numada M, Amin MN, Meguro K. Fiber Reinforced Polymer and Polypropylene Composite Retrofitting Technique for Masonry Structures. Polymers. 2015; 7(5):963-984. https://doi.org/10.3390/polym7050963

Chicago/Turabian Style

Umair, Saleem M., Muneyoshi Numada, Muhammad N. Amin, and Kimiro Meguro. 2015. "Fiber Reinforced Polymer and Polypropylene Composite Retrofitting Technique for Masonry Structures" Polymers 7, no. 5: 963-984. https://doi.org/10.3390/polym7050963

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