Computer-aided strengthening of masonry walls using fibre-reinforced polymer strips

10.1617/14116 ◽  
2004 ◽  
Vol 38 (275) ◽  
pp. 93-98 ◽  
Author(s):  
T. D. Krevaikas
Keyword(s):  
Masonry Walls ◽  
Reinforced Polymer ◽  
Computer Aided ◽  
Fibre Reinforced Polymer

Computer-aided strengthening of masonry walls using fibre-reinforced polymer strips

2005 ◽  
Vol 38 (1) ◽  
pp. 93-98 ◽  
Author(s):  
T. D. Krevaikas ◽  
T. C. Triantafillou
Keyword(s):  
Masonry Walls ◽  
Reinforced Polymer ◽  
Computer Aided ◽  
Fibre Reinforced Polymer

Experimental Study on Seismic Behavior of Masonry Walls with Window Openings Strengthened with Sprayed GFRP

2015 ◽  
Vol 744-746 ◽  
pp. 113-117
Author(s):  
Cheng Fang Sun ◽  
Chun Ming Chen ◽  
Qian Gu
Keyword(s):  
Seismic Behavior ◽  
Critical Role ◽  
Masonry Walls ◽  
Cfrp Sheets ◽  
Reinforced Polymer ◽  
Glass Fibre Reinforced Polymer ◽  
Carbon Fibre Reinforced Polymer ◽  
Fibre Reinforced Polymer ◽  
Glass Fibre Reinforced ◽  
Hysteresis Response

A contrast investigation of the seismic behavior of unreinforced masonry walls with window openings strengthened with Carbon Fibre Reinforced Polymer (CFRP) sheets and sprayed Glass Fibre Reinforced Polymer (GFRP) is presented. Three wall specimens in the scale of 1/2 were tested by the horizontal cyclic loading combined with constant gravity loads. The seismic strengthening effects by two different FRP retrofitting schemes are compared in aspect of the hysteresis response, deterioration of rigidity and ability of energy dissipation. The experimental results indicate that the increasing degree of the improvement of seismic behavior of the SGFRP-strengthened wall are significantly superior to that of the wall strengthened with epoxy-based CFRP; and the overcoat of sprayed GFRP can bond tightly and work well together with the masonry to play a critical role in earthquake resistance.

Strengthening of a concrete masonry wall subject to lateral load with sprayed glass-fibre-reinforced polymer

2010 ◽  
Vol 37 (10) ◽  
pp. 1315-1330 ◽  
Author(s):  
M. A. Haddad ◽  
E. Shaheen ◽  
G. A. Parsekian ◽  
D. Tilleman ◽  
N. G. Shrive
Keyword(s):  
Glass Fibre ◽  
Lateral Load ◽  
Masonry Wall ◽  
Masonry Walls ◽  
Reinforced Polymer ◽  
Concrete Masonry ◽  
Glass Fibre Reinforced Polymer ◽  
Fibre Reinforced Polymer ◽  
Glass Fibre Reinforced ◽  
Failure Line

Unreinforced hollow concrete masonry walls could be used to construct basements if strengthened to resist the lateral load. Two face-shell-bedded concrete masonry walls were constructed, 3 m high by 6 m long. As a simple strengthening technique, one wall was sprayed with glass-fibre-reinforced polymer (GFRP) on one side to a nominal average thickness of 5 mm. The walls were subjected to distributed point loading simulating increasing pressure from top to bottom of the wall. Support conditions were applied to simulate the walls being part of a basement. The plain wall failed with a failure line cracking pattern at a lateral load of 44 kN. The sprayed wall failed in a much more brittle fashion when the load reached 330 kN. The GFRP suffered a mode III tear at the bottom course. The results indicate that spraying a plain masonry wall with GFRP increases its ability to resist lateral load considerably, and that the process could be improved in terms of both the thickness of the layer and the area of wall covered to achieve a specific target. The two walls were analyzed using the yield-line, fracture-line, and failure-line methods. The failure-line method was improved by accounting for the stiffness orthotropy of masonry and gave the most accurate prediction of these plastic design methods. A finite element model of the masonry provided the most accurate prediction of capacity.

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