1. Improvement of compressive strength of reinforced cement concrete elements using cfrp wrapping
Authors : Raviprasad Penda, Madhusudana Reddy B
Pages : 73-79
Keywords : Distressed, Strengthening, CFRP wrapping, Retrofitting, Rehabilitation etc. Abstract :
Experiments were conducted on the distressed reinforced cement concrete compressive elements and on the same after they have been retrofitted for rehabilitation. Presently, FRP materials are also been started use in construction field in the form of wrapping to enhance the load carrying capacity, shear and flexural strengths as well as ductility. This is an experimental based project which deals with strengthening and load – deformation relationship of reinforced cement concrete compressive elements of square cross section using carbon fibre reinforced polymer (CFRP) wrapping. Mix design is done for M 20 grade of concrete as per IS: 10262-2009 for preparation of structural elements. Compressive test has been conducted on the fresh and distressed compressive elements for obtaining the load carrying capacity of the elements and the load – deformation relationship. From the results it is noticed that, there is an increase in load carrying capacity of the compressive elements having square cross section due to the CFRP wrapping when compared with the elements without CFRP wrapping. Further, it is observed that larger deformations in case of CFRP wrapped reinforced cement concrete compressive elements.