Next Article in Journal
Warpage Analysis of Electroplated Cu Films on Fiber-Reinforced Polymer Packaging Substrates
Next Article in Special Issue
Interlaminar Fracture Toughness of CFRP Laminates Incorporating Multi-Walled Carbon Nanotubes
Previous Article in Journal
Biopolymer Blends Based on Poly (lactic acid): Shear and Elongation Rheology/Structure/Blowing Process Relationships
Previous Article in Special Issue
Residual Axial Capacity Comparison of CFFT and RC Bridge Columns after Fire
Article Menu

Export Article

Open AccessArticle
Polymers 2015, 7(5), 963-984;

Fiber Reinforced Polymer and Polypropylene Composite Retrofitting Technique for Masonry Structures

Department of Civil and Environmental Engineering, College of Engineering, King Faisal University, Al-Ahsa 31982, Saudi Arabia
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
Received: 25 March 2015 / Accepted: 18 May 2015 / Published: 22 May 2015
Full-Text   |   PDF [4883 KB, uploaded 22 May 2015]   |  


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

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

Share & Cite This Article

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.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Polymers EISSN 2073-4360 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top