STRENGTHENING OF REINFORCED CONCRETE SQUARE COLUMNS BY MEANS OF FERRO CEMENT JACKET

Elsibaey, Mohamed. O.; Awadallah, Zakaria. H.; Zakaria, Mohamed; Farghal, Omar. A.

doi:10.21608/jesaun.2020.118571

STRENGTHENING OF REINFORCED CONCRETE SQUARE COLUMNS BY MEANS OF FERRO CEMENT JACKET

Document Type : Research Paper

Authors

¹ Civil Engineering Department, Aswan University, Egypt

² Structural Engineering Department, Al-Azhar University, Qena, Egypt

³ Civil Engineering Department, Assiut University, Egypt

10.21608/jesaun.2020.118571

Abstract

This paper presents an experimental investigation to clarify the behaviour of reinforced concrete square columns strengthened using ferrocement jacket. Strengthening using ferrocement jacket is relatively a new technique, which has a high strength/weight ratio, good resistance to cracking and impact loading, acceptable resistance to fire, and more resistance to corrosion than traditional materials. Ten reinforced concrete short columns with nominal cross-sectional dimensions of 200 × 200 mm with a total length of 1200 mm were cast and tested under axial loading until failure. The main parameters in this study were the number of layers of wire mesh, type of wire mesh, and the cement mortar strength. The results showed the effectiveness of the ferrocement jacket in improving the column capacity and reducing the vertical and lateral deformation. The results from the experiment were compared with the theoretical results obtained from the modified ECP 203 and modified ACI 318 equation codes.

Keywords

Main Subjects

Civil Engineering: structural, Geotechnical, reinforced concrete and steel structures, Surveying, Road and traffic engineering, water resources, Irrigation structures, Environmental and sanitary engineering, Hydraulic, Railway, construction Management.

References

[1] Abdullah and Takiguchi, K. (2003), "An investigation into the behaviour and strength of reinforced concrete columns strengthened with ferrocement jackets". Cement & Concrete Composites, vol. 25: pp 233–242.

[2] Abeer M. E, Hossam H. A, Bishoy A. M, and Taha A. El-Sayed, (2019)," Structural Performance of Eccentric Ferrocement Reinforced Concrete Columns" Nanoscience and Nanotechnology journal, Volume 11, SP 1213- EP 1225.

[3] A.B.M.A. Kaish, M. Jamil, S.N. Raman, M.F.M. Zain, L. Nahar, "Ferrocement composites for strengthening of concrete columns": A review Construction and Building Materials, 160 (2018), pp. 326-340

[4] A. B. M. A. Kaish, (2016), "An approach to improve conventional square ferrocement jacket for strengthening application of Short Square RC column. Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia.

[5] American Concrete Institute (ACI), (1988). "Guide for the Design, Construction, and Repair of Ferrocement". ACI 549, Detroit, American Concrete Institute.

[6] American Concrete Institute (ACI), (2008). "Building Code Requirements for Structural Concrete" (ACI 318-08) and Commentary (ACI 318R-05). Detroit, American Concrete Institute.

[7] Afaf H Abdallah, Abeer M. Erfan, Taha A. El-Sayed, (2019,) Experimental and analytical analysis of lightweight ferrocement composite slabs. Engineering Research Journal (ERJ), Vol. 1, No. 41 July 2019, pp. 73-85.

[8] Egyptian Code for Design and Construction of Reinforced Concrete Structures) ECP 203- 2007)) - ECP 203- 2018(.

[9] El-Sayed, T.A. and Erfan, A.M. (2018), "Improving shear strength of beams using ferrocement composite". Construction and Building Materials, 172, pp.608–617.

[10] Jianqi Wang, (2013), "Behavior of ferrocement columns under static and cyclic loading" Doctor of Philosophy, in the Faculty of Manchester for Engineering and Physical Sciences.

[11] Ornela Lalaj, (2015), “Recent perspectives for ferrocement" Res. Eng. Struct. Mat. Vol. 1 Iss.1 (2015) 11-23.

[12] Kaish, A. B. M. A, Alam, M. R., Jamil, M. & Waheed, M. A., (2013). "Ferrocement Jacketing for restrengthening of Square Reinforced Concrete Column under Concentric Compressive Load". Procedia Engineering, 54 (0), 720-728.

[13] Kim, J.-K. & Lee, S.-S., (2000). "The behaviour of reinforced concrete columns subjected to axial force and biaxial bending". Engineering Structures, 22 (11), 1518-1528.

[14] Mansur, M. & Paramasivam, P., (1985). "Ferrocement under combined bending and axial loads. International Journal of Cement Composites and Lightweight Concrete, 7 (3), 151-158.

[15] Mourad, S. & Shannag, M., (2012). "Repair and strengthening of reinforced concrete square columns using ferrocement jackets". Cement and Concrete Composites, 34 (2), 288-294.

[16] Nedwell, P., Ramesht, M. & Rafei-Taghanaki, S. (1994)" Investigation into the repair of short square columns using ferrocement, FERROCEMENT INTERNATIONAL SYMPOSIUM, 1994. 277-285.

[17] Paramasivam, P., Lim, C. T. E., & Ong, K. C. G. (1998). "Strengthening of RC beams with ferrocement laminates". Cement and Concrete Composites, 20(1), 53-65.

[18] Sayan Sirimontree, Boonsap Witchayangkoon and Krittiya Lertpocasombut, (2015)." Strengthening of Reinforced Concrete Column via Ferrocement Jacketing". American Transactions on Engineering & Applied Sciences. Volume 4 No.1 ISSN 2229-1652 eISSN 2229-1660, pp 39-47.