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IJSTR >> Volume 9 - Issue 2, February 2020 Edition



International Journal of Scientific & Technology Research  
International Journal of Scientific & Technology Research

Website: http://www.ijstr.org

ISSN 2277-8616



Shear Strengthening Of Steel I-Beam With Cfrp Composites

[Full Text]

 

AUTHOR(S)

P. R. Jagtap, S. M. Pore

 

KEYWORDS

Adhesive, CFRP, Deflection, I-Beam, Strengthening

 

ABSTRACT

The current study is based on the use of carbon fiber reinforced polymers (CFRP) to strengthen the structural I- Beam to its shear zone. CFRP has light-weight and high-strength, it is very flexible and thus forms all shapes, and is easy to handle during construction, so instead of using conventional methods for repair it can be used for strengthening purpose. Two sections with different cross-sectional dimensions of beams were used for this purpose. The web of the I-Beam was sand-blasted and made rust-free to attach CFRP sheets. Then carbon fiber sheets were attached in different layers using the proper adhesive. The beam with CFRP is cured and experimentation is done on UTM of 100 Ton capacity. A four-point bending test was performed on eight beams and results show that the shear capacity of a strengthened beam is increased by 17% to 40% compared with the non-strengthened beam. The deflection at mid-point of the beam is checked and it is observed that the deflection of the strengthened beam and the non-strengthened beam is the same, thus CFRP strengthening technique is the best way to improve the performance of steel sections within permissible deflection limits. So, such a technique of strengthening steel sections can be used to enhance the properties of various old structures that undergo loss of strength due to corrosion and aging.

 

REFERENCES

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