COMPARISON IN STRENGTHENING OF RCC CONCRETE COLUMN USING FERROCEMENT AND POLYPROPYLENE FIBER ROPE

Year 2021, Volume: 2 Issue: 1, 18 - 24, 03.06.2021

Al Amin Md. Asaduzzaman Pial Mahfuz Ahmad Md. Jobaer Ahamed

Abstract

Extreme loading and severe environmental exposures can cause deterioration of ferroconcrete (RC) columns, this research investigates the performance of external confinement on reinforced concrete short columns subjected to axial loading. Defects, failure and general distress in the structures can be the result of structural deficiency caused by erroneous design, poor workmanship or overloading of the structure. The effectiveness of confinement is achieved by comparing the behavior of retrofitted samples with that of controlled samples. Confining materials are used Ferrocement with wire mesh and polypropylene fiber rope in synthetic rubber adhesive like STAR bond which are easily available. Rectangular short columns having dimension of 150 mm × 150 mm × 900 mm has been cast and tested. The ultimate load carrying capacity for partial confinement (300 mm bottom and top of the column), single layer confinement, double layer confinement with Ferrocement and polypropylene fiber rope confinement are showed to improvement of 31.97%, 56.23%, 59.35% and 30.61% respectively over the control samples. The research results showed that, the confined samples can enhance the ultimate column capacity under concentric loading and improve failure characteristics.

Keywords

Retrofitting, , Ferro cement, confinement, Polypropylene fiber, synthetic adhesive

References

• S. T. Smith, and J. G. Teng, “FRP-strengthened RC beams. I: review of debonding strength models,” Engineering structures, 24(4), 385-395, 2002.
• P. Rochette, and P. Labossiere, “Axial testing of rectangular column models confined with composites,” Journal of Composites for Construction, 4(3), 129-136, 2000.
• A. B. M. A. Kaish, M. R. Alam, M. Jamil, M. F. M. Zain, and M. A. Wahed, “Improved ferrocement jacketing for re-strengthening of square RC short column”, Journal of Construction and Building Materials; 36, 228–237, 2012.
• B. Kondraivendhan, and B. Pradhan, “Effect of ferrocement confinement on behavior of concrete,” Construction and Building Materials, 23(3), 1218-1222, 2009.
• N. M. Apandi, A. Z. Awang, N. J. Hau, L. W. Haur, C. K. Ma, W. Omar, and S. C. S. Yung,”Repair and rehabilitation of concrete structures using confinement: A review,” Journal of Construction and Building Materials; 133, 502–515, 2017.
• T. C. Rousakis, “Elastic Fiber Ropes of Ultrahigh-Extension Capacity in Strengthening of Concrete through Confinement”, Journal of Materials Civil Engineering; 26:34-44, 2014.
• G. J. Xiong, X. Y. Wu, F. F. Li, and Z. Yan, “Load carrying capacity and ductility of circular concrete columns confined by ferrocement including steel bars”, Journal of Construction and Building Materials; 25, 2263–68, 2011
• T. C. Rousakis, “Elastic fiber ropes of ultrahigh-extension capacity in strengthening of concrete through confinement,” Journal of Materials in Civil Engineering, 26(1), 34-44, 2014.