NSM FRP reinforcement for strengthening reinforced concrete beams-overview

Joint Authors

Abd Allah, Avin Hasib
Abd al-Qadir, Muhammad Rauf

Source

ZANCO Journal of Pure and Applied Sciences

Publisher

Salahaddin University-Erbil Department of Scientific Publications

Publication Date

2016-06-30

Country of Publication

Iraq

No. of Pages

23

Main Subjects

Civil Engineering

English Abstract

Several classical methods for strengthening have been used in the past such as jacketing for reinforced columns, addition of steel plates at locations of tensile stresses and pre-stressing certain locations to improve the strength of the member.

Recently fibre reinforced polymers have replaced steel plates and emerged as a better material for externally applied strengthening material for beams to increase their shear and flexural capacity and for columns as best material for warping and confinement.

ACI committee 440-R-08 [1] has presented a guideline for design and construction of externally FRP method for strengthening of concrete structures.

The most recent advanced strengthening technique is near surface mounted fibre reinforced polymer.

NSM FRP is applied to the tension region of the beams inside pre prepared grooves.

Debonding failure modes which restrict the full exploitation of FRP are the most occurring type of failure for externally bonded FRP.

While in NSM technique, the existence of bars or the strip inside grooves would provide better bond between the FRP and the concrete.

In this paper methods of strengthening RC beams are reviewed with emphasis on the latest development of NSM FRP as the best emerged technology for strengthening reinforced concrete members for shear and flexure.

Recommendation for future trend of research in this area is also given.

Data Type

Conference Papers

Record ID

BIM-786739

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