DEFORMATIONS IN THE SHORT-TERM PROCESS ON SELF-COMPACTING CONCRETE FOR REPAIRED BEAMS

Based on the very good properties for putting on the work of self-compacting concrete, today in the world has increased its use in the construction of high-rise buildings. Self-compacting concrete has very good viscosity which makes it suitable for pumping and at the same time compacting. Based on the fact that self-compacting concrete does not have the same content of its constituent components as normal concrete, then we can say that both mechanical characteristics and deformations in concrete as in the short time process as well as deformations in the long process can not be same. To verify the difference in the results of the information from the action of loads in the short time process as well as from the action of loads in the long process we conducted an experiment on beams from normal concrete, beams from self-compacting concrete and beams repaired with self-compacting concrete. To determine the mechanical characteristics in the laboratory, laboratory samples were prepared in cubic, cylindrical and prismatic forms for the determination of compressive strength, tensile spliting strength, flexural strength and modulus of elasticity. In this paper will be given the results of deformations in concrete as well as the results of deformations in reinforcement in beams from normal concrete, selfcompacting concrete, and in repaired beams with self-compacting concrete. The test was performed by the action of the loads on the loading and unloading process by loading the beams up to the load (g + p), the unloading up to the level of the load g and then the loading up to the fracture (the load action is applied incrementally). Some of the results for certain mechanical characteristics in the laboratory will also be given in samples from normal concrete and from self-compacting concrete.