Design against premature peeling failure of R.C. beams with externally bonded steel or FRP plates

Hassanen, M.A.H. and Raoof, M. (2001) Design against premature peeling failure of R.C. beams with externally bonded steel or FRP plates. Magazine of Concrete Research, 53 (4). pp. 251-262. ISSN 0024-9831 (http://dx.doi.org/10.1680/macr.53.4.251.51366)

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Abstract

The salient features are presented of a recently reported semi-empirical model for predicting the lower/upper bounds to plate peeling loads of simply supported RC beams strengthened in flexure by gluing external steel or fibre reinforced plastic (FRP) plates to their soffits. The original model was, however, computer based, and involved certain iterative procedures. This potential drawback is overcome in the present paper, which reports details of some simplified (but still reasonably accurate) procedures for predicting the lower bound (i.e. safe) steel or FRP plate peeling loads, with the proposed formulations being amenable to hand calculations, using a pocket calculator, hence, of value to busy practising engineers.

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