Fracture Mechanics of Concrete Structures
Proceedings FRAMCOS-3
AEDIFICATIO Publishers, D-79 l 04 Freiburg, Germany
MODE I FRACTURE BEHAVIOR OF NATURAL FIBER REINFORCED CONCRETE
S. Ishiguro
Faculty of Bioresources, Mie University, Tsu, Japan
Abstract
The load-displacement diagrams of sisal fiber reinforced concrete (0.38%,0.76% and 1.14% v/v of 30 mm long sisal fibers), were determined by notched cubic specimens and wedge splitting procedures. From the load - displacement diagrams, the fracture mechanics properties and softening diagrams were derived. Softening diagrams derived using the poly linear approximation analysis method for sisal fiber reinforced concrete are presented and compared to those of an unreinforced control concrete. The observed differences in fracture behavior between sisal and steel fiber reinforced concretes are also. analyzed and discussed. Key words: Fiber reinforced concrete, softening diagram, natural fiber