USE of Composite Materials in Seismic Retrofitting of RC Shear Wall
Sanjivan Mahadik1, S. R. Bhagat2

1S. N. Mahadik, Department of Civil Engineering, Ph.D. Scholar, DBATU, Lonere, (Maharashtra), India.
2S. R. Bhagat, Department of Civil Engineering, Associate Professor, Department of Civil Engineering, DBATU Lonere, (Maharashtra), India.

Manuscript received on 20 January 2016 | Revised Manuscript received on 30 January 2016 | Manuscript published on 30 January 2016 | PP: 47-51 | Volume-4 Issue-6, January 2016 | Retrieval Number: F1526014616©BEIESP
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Abstract: A majority of the structures throughout the world are constructed of reinforced concrete. Reinforced concrete has good compressive strength but it shows brittle failure at joints or connections when subjected to bending moment due to seismic load. Some seismic load resisting system is essential to minimize the effect of seismic load to avoid failure of structures. The most common lateral load resistance systems found in many reinforced concrete structures is shear walls. Shear walls have been widely accepted as effective alternatives to moment resistant frames in seismic design of concrete structures. The main purpose of providing shear walls is to resist wind and earthquake forces in addition to gravity force. Many existing buildings which have been constructed without proper provisions of seismic resisting aid but these structures have RC walls around the stair blocks and elevator or along the structure perimeter. These elements are often reinforced to resist the vertical loads only, without considering the seismic actions. In few cases, the elements may be reinforced to resist horizontal wind loads but this provided reinforcement may be insufficient and effective against the design seismic actions recommended by the latest standards. In order to transform the existing RC walls into seismic resistant shear walls, different retrofit materials and techniques are traditionally proposed. Several composite materials have been tried by researchers to improve the behaviour of concrete used in different structural members and shear walls to improve their strength either for retrofitting or repair. Transformation of the existing RC walls into anti-seismic shear walls is often preferred due to simplicity and having no drawbacks. Structural members including shear wall requires retrofitting or repair due to change in codal provisions or changes in structure due to functional requirement or due to any other reason. Several composites available in market can be easily utilized for the purpose with different technique. This paper covers review of these methods and technique used in retrofitting RC shear wall.
Keywords: Composite materials, Seismic retrofitting, Base isolation, Strength, Stiffness, Ductility.

Scope of the Article: Composite Materials