ANCHORAGE ANDSTRENGTHENED DESIGN OF REINFORCED CONCRETE ELEMENTS BY COMPOSITE MATERIALS

Abstract

In European practice, carbon fiber materials of the Swiss company Sika, in particular SikaCarbodur tape and Sika Wrap canvas, which can be used to strengthen both inclined and normal sections of bending reinforced concrete structures, have become widely used.  In addition, Sika Wrap can also be used to anchor SikaCarbodur tapes. Its advantage, which differs from all other methods - is simplicity and extremely low complexity. Usually there are two main reasons for strengthening structures at the same time. This is an unsatisfactory technical condition of the object, and an increase in the level of various types of loads acting on the object and exceeding the value of bearing capacity.Strengthening the structure is almost always a task that requires an individual approach from a technical and economic point of view.

Re in for cement of structures with the help of composite tapes based on carbon fibers is a universal method. It is effective in strength hening, concrete, wood, metal, stone and other structures. Separation with composite materials is a competitive method. In general, a significant reduction in the cost of rein for cement is achieved by reducing the time of execution of works, due to the simpli city of rein for cement

The load-bearing capacity of normal and inclined sections of the element reinforced by the Sika system can be provided by arranging the required shear resistance between the beam body and the reinforcement system. If it is not possible to provide the required shear resistance by gluing the composite directly to the concrete surface of the structure, additional anchor devices must be installed. Therefore, it is important and weighty to anchor the tape with a canvas. Comparison, systematization and determination of the optimal option of anchoring the tape with a canvas will facilitate the design of reinforcement structures and simplify their calculation.