Nonlinear Fracture Behaviour Of Fiber Reinforced Self Compacting Concrete Using “R - Curve” Article Swipe
YOU?
·
· 2023
· Open Access
·
· DOI: https://doi.org/10.21012/fc11.0923101
· OA: W4390652114
In this paper the non-linear fracture behavior of plain and fiber-reinforced concrete is presented using R-Curve.Geometrically similar beam specimens of different sizes with (steel fibers and glass fibers) and without fibers were tested under three-point bending in a closed loop servocontrolled machine with crack mouth opening displacement control with a rate of opening of 0.0005 mm/sec.The non-linear fracture mechanics parameters such as, fracture energy (Gf ), length of process zone (cf), brittleness number (β), mode I fracture toughness (KIC), critical crack tip opening displacement (CTODC) and size of fracture process zone (l0) are determined for different PSCC, GFRSCC and SFRSCC using the size effect method.The crack growth resistance curve (R-curve) is also developed for specimens with and without fibers.These properties are required for two main reasons: firstly the fracture behaviour of FRSCC could be understood in comparison with PSCC and secondly these properties serve as input parameters in fracture mechanics based analysis of structures having fibers in SCC.
