Experimental research of three sizes of large beams made of steel fibre reinforced concrete SFRC has been carried out at the CTU, Prague. The beams were subjected to four point bending. The ultimate load of the beams is proportional to…
Experimental research of three sizes of large beams made of steel fibre reinforced concrete SFRC has been carried out at the CTU, Prague. The beams were subjected to four point bending. The ultimate load of the beams is proportional to their size, which means that no size effect has been observed at the ultimate load. The descending branch of the load deflection diagram is steeper at large beams than that at small beams. The large beams are more brittle, the descending branch is size dependent. A simple numerical model based on the discrete crack approach has been developed. Experimental and numerical results showed a good agreement.