Head of the project: Ing. Zahuranec Michal

Research team: doc. Ing. Koteš Peter, PhD., doc. Ing. Odrobiňák Jaroslav, PhD.

Duration: November 2019 – march 2021

The project is dealing with shear contact between original reinforced concrete and fibre concrete for using different methods of roughing surface. Concrete structures are influenced by degradation, overloading, the thawing and freezing cycles, abrasive damage, corrosion of reinforced bars etc.. All this mentioned influencing decreasing load-carrying capacity. These structures should be repaired or strengthened so fulfil ultimate limit states and serviceability limit states. Concrete structures as vertical columns are usually strengthened by using the concrete encasement of member’s. The main emphasis is put on the interaction of the original reinforced concrete and new concrete. The main factors are cohesion and adhesiveness, which are influencing the resistance of the cross-section. The member´ resistance is changed by the modification of surface. In the frame of the project will be done an experimental measurements taking into account the different methods of the modifications of surface. Subsequently, the results will be compared. The experiment will consist of 15 samples with dimensions 150x150x400mm. These samples will be encasement of the fibre concrete with thickness 35mm. So, the samples for so called push-test will be created. The pressure tests are going to be performed on the samples. The results will be treated and presented in the school round of SVOČ.