EXPERIMENTAL INVESTIGATION OF THE FRACTURE BEHAVIOUR OF REINFORCED ULTRA HIGH STRENGTH CONCRETE

摘要

In the last fifteen years new types of cement based materials have been developed in Denmark at the Aalborg Portland Cement Factory. These types of new materials are characterized by a very high strength even when mixed at room temperature and using conventional mixing techniques. In this paper the structural behaviour of a very high strength cement based material with and without steel fibres is investigated. A simple structural geometry has been tested, namely a beam subjected to three point bending. The results show that the increase of ductility of the material also gives a more ductile behaviour of the beam. In some cases even the structural failure modes change from shear failure to bending failure.