The field of research in the frames of this paper will be Application of Innovative Materials for Repair and Strengthening of RC Buildings in seismic active regions. Within the frames of this paper, special emphasis will be put on RC buildings where, during construction, the built-in concrete has not achieved the designed concrete class. In these cases, it is necessary to take measures for repair and strengthening of both individual structural elements and whole structures using traditional and Innovative Materials.

To present the possibilities and the benefits of use of these innovative construction materials in strengthening of structural elements of buildings and integral building structures, ample laboratory research for definition of the characteristics of these materials with different technologies of strengthening by CFRP (Carbon Fiber Reinforced Polymers) materials are carried out at the Institute of earthquake Engineering and Engineering Seismology – IZIIS, Skopje and Institute of Material Testing-ZIM-AD Skopje.

In this paper, technology of strengthening of RC columns with traditional materials as well as characteristics and types of innovative materials are introduced. Results from laboratory research of RC concrete specimens-cylinders with different technologies of strengthening by CFRP are presented.