Out-of-Plane Behavior of Masonry Walls Strengthened with Ferrocement

Abstract:

Un-reinforced masonry (URM) structures may fail and collapse under out-of-plane loads generated by seismic forces or explosions. Adding a ferrocement overlay onto the URM walls is an effective solution in increasing the ultimate load capacity and ductility. This paper deals with the numerical and experimental studies on the out-of-plane behavior of un-reinforced masonry walls strengthened with ferrocement. The material parameters considered are the volume fraction of reinforcement and the loading area. A numerical model was proposed to simulate the experimental results. The employed material model for masonry wall is based on the theory of Drucker-Prager plasticity taking into account the tension softening behavior, while the ferrocement is modeled as a composite material with linear strain hardening followed by ideal plasticity. The proposed model simulates the load-deflection behavior of the strengthened wall well.

• Periodical: Advanced Materials Research (Volumes 163-167)
• Pages: 3545-3550
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.163-167.3545
• Online since: December 2010
• Authors: Sheng Ping Chen
• Keywords: Ferrocement, Masonry Wall, Numerical Simulation, Out-of-Plane Loads, Strengthening

References

[1] Tan KH, and Patoary MKH. Strengthening of masonry walls against out-of-plane loads using fiber-reinforced polymer reinforcement. J. of Composites for Construction, Vol. 8 (2004), pp.79-87.

DOI: 10.1061/(asce)1090-0268(2004)8:1(79)

[2] Turco V, Galati N, Tumialan G, and Nanni A. Flexural strengthening of URM walls with FRP systems, in Fiber-Reinforced Polymer Reinforcement for Concrete Structures, FRPRCS-6, K.H. Tan (ed. ), World Scientific, Singapore, 2003, 1219-1228.

DOI: 10.1142/9789812704863_0117

[3] ACI Committee 549. State-of-the-Art Report on Ferrocement, ACI 549-R97, in Manual of Concrete Practice, American Concrete Institute, Farmington Hills, Michigan, (1997).

[4] Kazemi MT, and Morshed R. Seismic shear strengthening of R/C columns with ferrocement jackets. Cement and Concrete Composites, 2005, Vol. 27 (2005), pp.834-842.

DOI: 10.1016/j.cemconcomp.2005.03.011

[5] Naaman AE. Ferrocement and Laminated Cementitious Composites. Ann Arbor, Michigan, Techno Press 3000, (2000).

[6] ACI Committee 549. Guide for the design, construction, and repair of ferrocement (ACI 549. 1R-93 ). America Concrete Institute, Michigan, USA, (1993).

[7] DIANA-8. 1 User's Manual, TNO Building and Construction Research, (2002).

[8] Kim JH. Analytical implications on in-plane behavior of unreinforced masonry walls, in Finite Elements in Civil Engineering Applications, Hendriks and Rots (Eds), Swets and Zeitlinger, Lisse, 2002, pp.249-255.

DOI: 10.1201/9781003211365-34

[9] Eurocode 6 (1998). Design of Masonry Structures. British Standards Institution, London.

[10] Schuber P. Modulus of elasticity of masonry, in Proceedings of the Fifth International Brick Masonry Conference, Washington, 1982, pp.139-144.