1Department of Civil Engineering, Jan Nayak Ch. Devi Lal Memorial College of Engineering, Sirsa1, India
2Department of Civil Engineering, Thapar University, Patiala, India
Thousands of reinforced concrete structures are constructed annually and a large number of these deteriorate or become unsafe before their design life. As a matter of fact, such unserviceable structures require immediate attention, enquiry into the cause of distress and suitable remedial measures, so as to bring the structures back to their functional use again. Various retrofitting techniques are used in the field for the purpose and out of them plate bonding technique is considered as the most appropriate. In this technique, the plates of different materials viz. CFRP, GFRP, Ferrocement etc. can be bonded to the surface of a structural member to increase its strength. Ferrocement sheets are most commonly used as retrofitting material these days due to their easy availability, economy, durability, and property of being cast to any shape without needing significant formwork. In the present investigation, the effect of the strength of ferrocement jackets for initially damaged exterior RC beam-column joints has been presented. In total three reinforced concrete BC joints were loaded to ultimate loading designated as control specimens and then these damaged specimens retrofitted using ferrocement jackets. The wire meshes was provided in the joint region. The experimental observation showed improvement in ultimate load, yield load carrying capacity with increase in stiffness of the ferrocement jacketed joints in comparison to control joint.
Beam-Column joints, Retrofitting, Ferrocement, strength, Ductility, Stiffness
