Fracture properties of multi-layered steel fiber-reinforced concrete
Fiber-reinforced concrete has recently been used as a way to increase the energy absorption capacity and toughness of concrete. The fibers that are used can be made of materials like steel, polypropylene, or polyethylene. The fibers are randomly mixed into concrete mixture, and make up less than one percent of the mixture by volume. This study uses steel crimped fibers as an additive to a concrete mixture. Multi-layered steel fiber reinforced concrete beams, measuring 700 mm long, 150 mm high, and 80 mm deep, were tested using the two-parameter fracture model test after seven days of curing. Results showed that the steel fiber reinforced concrete increased fracture energy of the beams. On average, the specimen configuration which had the Steel Fiber Reinforced Concrete (SFRC) layer on top of the plain concrete layer had a total fracture energy that was about 3.3 times greater than the plain concrete beams.
School:
California State Univeristy Northridge
Department:
Civil Engineering
Research Advisor:
Jeffrey Roesler
Department of Research Advisor:
Civil and Environmental Engineering
Year of Publication:
2005