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APPLICATION OF EXPANSIVE AGENT (EA) TO PRODUCE POST TENSIONING FORCE IN FRP JACKETS FOR LATERAL RETROFITTING OF RC COLUMNS

Publish Year: 1388
Type: Conference paper
Language: English
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ICCD03_061

Index date: 11 October 2008

APPLICATION OF EXPANSIVE AGENT (EA) TO PRODUCE POST TENSIONING FORCE IN FRP JACKETS FOR LATERAL RETROFITTING OF RC COLUMNS abstract

Repair and strengthening of RC structures using FRP materials is one of the new and effective techniques ever used. With this respect, strengthening of structural elements by external lateral confinement can lead to increased strength and ductility. In this way, using an efficient and optimized method for lateral confinement is of great importance. A novel, economic and simple technique for the repair and strengthening of RC members by means of expansive agent(EA) to produce post tensioning force, has been proven to perform well following experimental work undertaken at the University of Sheffield. The aim of the technique is to ensure the enhancement of the member strength and ductility by localized strengthening. The above technique is equivalent to increasing the effectiveness of the composite confinement and it becomes possible to strengthen large columns with smaller amounts of composites, which are utilized earlier at much higher strengths. In addition, the level of axial strain achieved at failure is improved significantly. The paper will present details of experimental work with different types of confining material (glass and carbon), amounts of reinforcement and levels of initial prestressing.

APPLICATION OF EXPANSIVE AGENT (EA) TO PRODUCE POST TENSIONING FORCE IN FRP JACKETS FOR LATERAL RETROFITTING OF RC COLUMNS Keywords:

APPLICATION OF EXPANSIVE AGENT (EA) TO PRODUCE POST TENSIONING FORCE IN FRP JACKETS FOR LATERAL RETROFITTING OF RC COLUMNS authors

A.A Mortazavi

Associate professor, Power and Water University of Technology, Tehran, Iran

M Jalal

M.Sc. Student, Dept of civil Engg. School of Engg Razi University, Kermanshah, Iran

M.M Khodaparast

B.Sc., Power and Water University of Technology, Tehran, Iran

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Mortazavi A., ،، S trengthening, ductility and repair of RC ...
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Pilakoutas K., *Ductility design of reinforced concrete members?, 16th European ...
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