Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/25247
Title: Experimental investigation on reinforced concrete interior beam-column joints rehabilitated by ferrocement jackets
Authors: Li, B
Lam, ESS 
Wu, B
Wang, YY
Keywords: Beam-column joints
Diagonal reinforcements
Ferrocement jackets
Rehabilitation
Reinforced concrete
Shear strength
Issue Date: 2013
Publisher: Pergamon Press
Source: Engineering structures, 2013, v. 56, p. 897-909 How to cite?
Journal: Engineering structures 
Abstract: In this study, a method for rehabilitating reinforced concrete interior beam-column joints using ferrocement jackets with embedded diagonal reinforcements is proposed. It improves seismic performance of substandard beam-column joints and repairs deteriorated concrete cover without increasing the dimensions of the joints. Ferrocement, comprising mortar and wire mesh, was applied to replace concrete cover to enhance shear strength of the joints. Diagonal reinforcements were installed to reduce the forces transferred to the joint core. Four 2/3 scale interior beam-column joints, including one control specimen and three strengthened specimens, were prepared and tested under quasi-static cyclic loading. Three types of mortars were considered for each strengthened specimen. Test results have indicated that the proposed rehabilitation method can improve seismic performance of interior beam-column joints using ferrocement with high strength mortar. Strength of mortar is the vital factor affecting the performance of strengthened specimens. Anchor bolts installed at the interface between ferrocement and concrete substrate improve bonding and overall performance. Finally, a method for predicting the shear strength of joints rehabilitated by ferrocement jackets with embedded diagonal reinforcements is proposed.
URI: http://hdl.handle.net/10397/25247
ISSN: 0141-0296
EISSN: 1873-7323
DOI: 10.1016/j.engstruct.2013.05.038
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