Usage of ferrocement jacketing for strengthening of damaged unreinforced masonry (URM) walls

In this paper, it is presented the usage of ferrocement jacketing technique as an effective method to improve structural performance of unreinforced masonry panels. Nine diagonal compression tests were conducted on plain, pre-cracked repaired and reinforced masonry panels on six specimen with nominal dimensions of 1.2 x 1.2 x 0.25 m, built and tested in laboratory. The results of the diagonal compression tests were compared in terms of increase in shear strength, drift and the mode of failure. Additionally, finite element modelling using discrete micro-modelling and non-linear analyses were performed using midas FX+ for DIANA 9.6 commercial software to simulate the behavior of plain and reinforced panels. As a result, it was observed that ferrocement jacketing made a considerable improvement in shear strength and deformation capacity for both, repaired and reinforced masonry panels.

[1]  Mohammad Zaman Kabir,et al.  Experimental response of double-wythe masonry panels strengthened with glass fiber reinforced polymers subjected to diagonal compression tests , 2012 .

[2]  M. Shannag,et al.  Repair and strengthening of reinforced concrete square columns using ferrocement jackets , 2012 .

[3]  Ciro Faella,et al.  Shear capacity of masonry walls externally strengthened by a cement-based composite material: An experimental campaign , 2010 .

[4]  Daniel P. Abrams,et al.  Effectiveness of rehabilitation on seismic behavior of masonry piers , 2007 .

[5]  H. Kaushik,et al.  Uniaxial compressive stress-strain model for clay brick masonry , 2007 .

[6]  S. Erşahin,et al.  Assesment of clay bricks compressive strength using quantitative values of colour components , 2006 .

[7]  Giuseppe Cultrone,et al.  Durability of bricks used in the conservation of historic buildings — influence of composition and microstructure , 2003 .

[8]  A. Fernandez,et al.  Behaviour of a hemispherical dome subjected to wind loading , 2001 .

[9]  Giorgio Croci,et al.  The Conservation and Structural Restoration of Architectural Heritage (G. Croci) , 2001 .

[10]  T. Triantafillou Strengthening of Masonry Structures Using Epoxy-Bonded FRP Laminates , 1998 .

[11]  P. Lourenço Computational strategies for masonry structures : Proefschrift , 1996 .

[12]  M. Saatcioglu,et al.  Confinement of Reinforced Concrete Columns With Welded Wire Fabric , 1989 .

[13]  I. Rosenthal Precast ferrocement columns , 1986 .