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Structural behaviour of ferrocement channels slabs for low cost housing

Yousry B. I. Shaheen, Essam A. Eltehawy


DOI: https://doi.org/10.20528/cjcrl.2017.02.002

Abstract


This paper presents a new pre cast U-shape ferrocement forms reinforced with various types of metallic and non-metallic mesh reinforcement. This research was designed to investigate the feasibility and effectiveness of employing various types of reinforcing meshes in the construction of structural slabs incorporating permanent U-shape ferrocement forms as a viable alternative for conventional reinforced concrete slabs. Fiber glass meshes reinforcement was used for durability and protection against corrosion of reinforcing steel. To accomplish this objective, an experimental program was conducted. The experimental program comprised casting and testing ten slabs having the total dimensions of 500x100x2500 mm incorporating 40 mm thick U-shape permanent ferrocement forms. Series A consists of two conventionally reinforced concrete slabs were cast and tested and used as control slab without fibers and with fibers, volume fraction, 2.05 % and 2.177 %. Series B comprises of two slabs reinforced with one and two layers of expanded steel mesh, volume fraction 2.09 and 2.42% respectively. Series C comprises two slabs reinforced with two and four layers of welded galvanized steel mesh, having volume fraction 2.05 and 2.189% respectively. Series D Consists of two slabs reinforced with one layer and two layers of fiber glass meshes, having volume fraction 2.107 and 2.277% respectively. Series E comprises two slabs reinforced with 2 layers expanded steel mesh and one layer expanded steel mesh, having volume fraction 1.357 and 2.750 % respectively. The test specimens were tested as simple slabs under four-line loadings condition on a span of 2300mm. The performance of the test slabs in terms of strength, stiffness, strains, cracking behavior, ductility, and energy absorption properties was investigated. The behavior of the developed slabs was compared to that of the control slabs. The experimental results showed that high ultimate and serviceability loads, better crack resistance control, high ductility, and good energy absorption properties could be achieved by using the proposed slabs and low cost compared with control specimen.


Keywords


ferrocement channels; deformation characteristics; serviceability load; cracking behaviour; ductility; energy absorption

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References


Abdel Tawab A (2006). Development of Permanent Formwork for Beams Using Ferrocement Laminates. Ph.D thesis, Menoufia University, Shebin El-Kom, Egypt.

Abdul Kadir MR, Jaafar MSH (1993). Ferrocement in situ permanent formwork. Journal of Ferrocement, 23(2), 125-133.

Abdul Kadir MR, Abdul Samad AA, Che Muda Z, Ali AAA (1997). Flexural Behavior of Composite Beam with ferrocement Permanent Formwork. Journal of Ferrocement, 27, 209 - 214.

ACI 549-1R-88 (1998). Guide for the Design, Construction, and Repair of Ferrocement, Manual of Concrete Practice. American Concrete Institute, Farmington Hill, Michigan, USA.

Ayoub STAE (2005). Flexural Behavior of High Strength Concrete Beams Reinforced with Advanced Composite Materials. M.Sc thesis, Menoufia University, Shebin El-Kom, Egypt.

Channi AS (2009). Effect of Percentage of Reinforcement on Beams Retrofitted with Ferrocement Jacketing. M.Sc thesis, Thapar University, Patiala, India.

El-Halfawy EMAF (2003). Flexural Behavior of Ferrocement Deck Bridges. M.Sc thesis, Menoufia University, Shebin El-Kom, Egypt.

ElMohimen HMRA (2005). Structural Behaviour of Ribbed Ferrocement Plate. B.Sc thesis, Menoufia University, Shebin El-Kom, Egypt.

El-Sakhawy YME (2007). Structural Behaviour of Ferrocement Roof Elements. M.Sc thesis, Menoufia University, Shebin El-Kom, Egypt.

Fahmy EH, Shaheen YBI (1991). Strengthening and repairing of reinforced concrete tanks. Fourth Arab Structural Engineering Conference, United Arab Emirates, 18-21.

Fahmy EH, Shaheen YBI, El-Dessouki WM (1995). Application of ferrocement for construction of radial gates. Journal of Ferrocement, 25(2), 115-121.

Fahmy EH, Shaheen YBI, Korany YS (1997a). Repairing reinforced concrete beams by ferrocement. Journal of Ferrocement, 27(1), 19-32.

Fahmy EH, Shaheen YBI, Korany YS (1997b). Use of ferrocement laminates for repairing reinforced concrete slabs. Journal of Ferrocement, 27(3), 219-232.

Fahmy EH, Shaheen YBI, Korany YS (1999). Repairing reinforced concrete columns using ferrocement laminates. Journal of Ferrocement, 29(2), 115-124.

Fahmy EH, Shaheen YBI, Abou Zeid MN (2004). Development of ferrocement panels for floor and wall construction. 5th Structural Specialty Conference of the Canadian Society for Civil Engineering, Canada.

Housing and Building Research Center (HBRC) (2001). The Egyptian Code for Design and Construction of Concrete Structures, Cairo, Egypt.

Mansur MA, Paramasivam P (1990). Ferrocement short columns under axial and eccentric compression. ACI Structural Journal, 87(5), 523-529.

Mays GC, Barnes RA (1995). Ferrocement permanent formwork as protection to reinforced concrete. Journal of Ferrocement, 25(4), 331-345.

Naaman AE, Shah SP (1971). Tensile tests of ferrocement. ACI Journal, 68(9), 693-698.

Rajagoplan K, Parameswaran VS (1975). Analysis of ferrocement beams. Journal of Structural Engineering, 2(4), 155-164.

Ramesht MH, Vickridge I (1996). A computer program for the analysis of ferrocement in flexure. Journal of Ferrocement, 26(1), 21- 31.

Rao PK, Rao VJ (1987). Development and application of composite precast ferrocement and concrete roofing/flooring system. Proceedings of the First International Conference on Structural Science and Engineering, India.

Rosenthal I, Bljuger F (1985). Bending behavior of ferrocement – reinforced concrete composite. Journal of Ferrocement, 15(1), 15-24.

Sandowicz M, Grabowski J (1985). Application of ferrocement channel elements to housing. Proceedings of the Second International Symposium on Ferrocement, International Ferrocement Information Center, Bangkok. 493- 505.

Shaheen YBI, Eltaly B, Henish A (2014). Experimental and FE simulations of ferrocement domes reinforced with composite materials. Concrete Research Letters, 5(4), 837-887.

Shaheen YBI, Mahmoud AM, Refat HM (2016). Structural performance of ribbed ferrocement plates reinforced with composite materials. Structural and Engineering Mechanics, 60(4), 567-594.

Singh G, Bennett EW, Fakhri NA (1988). Influence of reinforcement on fatigue of ferrocement. The International Journal of Cement Composites and Lightweight Concrete, 8(3), 151-164.

Sutherland WM (1972). Ferrocement Boats: Service Experience in New Zealand. FAO Seminar on the Design and Construction of Ferrocement Fishing Vessels, Wellington, 14 (Also, Fishing News, West Byfleet, Surrey).

Swamy RN, Abboud MI (1988). Application of ferrocement concept to low cost lightweight concrete sandwich panels. Journal of Ferrocement, 18(3), 285-292.

Tomar A (2006). Retrofitting of Shear Deficient RC Beams using Ferrocement Laminates. M.Sc thesis, Thapar Institute of Engineering and Technology (Deemed University), Patiala, India.

Wrigley RG (2001). Permanent Formwork in Construction. Construction Industry Research & Information Association (CIRIA), London.


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