study presents the experimental results of fracture properties of lightweight concrete made with cold-pelletized aggregates , 2 % and 3 % incorporating three steel concentrations, 1 % of cement weight respectively. Experimental results showed that the increase of fiber amount…
study presents the experimental results of fracture properties of lightweight concrete made with cold-pelletized aggregates , 2 % and 3 % incorporating three steel concentrations, 1 % of cement weight respectively. Experimental results showed that the increase of fiber amount increased compressive, splitting tensile and strengths, toughness of concrete. Compressive strengths of ¢ 100x200 mm cylindrical concrete specimen at 28 days ranged from 33. 9 fiber) to 37.72 MPa (3% fiber). means of size effect law, it was that the fracture energy increased from Gf = 37 .2 Nim (no fiber) to 62.7 Nim (3% fiber), respectively. Predictions of structural response on the three-point bending specimen from R-curves were also presented.