Mechanické vlastnosti betonu a experimentální zkoušky železobetonových nosníků

Abstract

The bachelor's thesis deals with the verification of mechanical properties of fine-grained concrete with a grain size of up to 4 mm and tests of reinforced concrete beams without shear reinforcement. The theoretical part of the thesis describes a brief history of concrete, its main components (cement, water and aggregates) and a description of laboratory tests. As part of the verification of concrete properties during the practical part, compressive strength tests for cubes and cylinders were performed in several variants, followed by split tensile tests, static and dynamic modulus of elasticity. The experimental part also included tests of depth penetration of pressurized water, resistance to frost and defrosting chemicals and volume changes of concrete. The last entry of the practical part was the testing of two variants of reinforced concrete beams without shear reinforcement with different degrees of reinforcement.