Fracture Property of Mass Concrete with Inclusion of Fibers
In order to obtain the effect of fibers on fractural property of mass concrete, it had investigated physical performance, elastic modulus and bending toughness of mass concrete with the presence of steel fiber and polypropylene fiber(PPF). Results showed that the inclusion of PPF caused a slight decrease in initial cracking strength, flexural strength and elastic modulus, yet resulted in small increase in equivalent flexural strength, capacity-carrying loading variation coefficient and toughness.The presence of steel fiber was of significance to increase initial-cracking strength, flexural strength and equivalent flexural strength, and produced a slight increase in elastic modulus and significant improvement in capacity-carrying variation coeffecient and flexural toughness. Overall, the inclusion of steel fiber is rated better than PPF in improving ductility and crack resistance of concrete.
Jingtao Han, Zhengyi Jiang and Sihai Jiao
H. Q. Yang et al., "Fracture Property of Mass Concrete with Inclusion of Fibers", Advanced Materials Research, Vols. 156-157, pp. 534-539, 2011