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

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

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