CFRP strengthening material and strengthening techniques

If the map of Turkey earthquake is examined, we can see that the 42 percent of our country?s survey is on the first degree seismic belt. In our country the structures have to designed as earthquake-resistant because of the important earthquake risk. The aim is here, the structures should supply expectations during and after earthquake ( which is considering the magnitude of the earthquake will ocur).A large part of the existing reinforced concrete structure during various research projects eximaning the concrete compressive strength is lower than predicted value that on the project, and transverse; longitudinal reinforcements are far from ensuring the conditions stipulated on today?s regulations. Axial loads of the vertical bearing elements, shear forces, bending moment carrying capacities and ductilies are adversely affected because of these deficiences. As a result of this, structures behaviours, which against to earthquake, are much more fail than predicted.For these situations, different strenthening methods had enhanced, to increase and strenght them in order to protect their original form.In this study, there are some informations about these strenthening methods and especially CFRP ( carbon fiber reinforced polymer ) strenthening method. For a better understanding of this method, an existing building had solved with performance analysis and found elements which should be strengthed. The elements which should be strengthed had solved and analyzed with CFRP ( carbon fiber reinforced polymer ) and the results were presented in reports.Keywords: CFRP, strenthening, earthquake, performance analysis, ACI 440.