Authors :
Frajitha Franklin, Jayaprakash Jain K. G.
Volume/Issue :
Volume 4 - 2019, Issue 6 - June
Google Scholar :
https://goo.gl/DF9R4u
Scribd :
https://bit.ly/2L0PIj0
Abstract :
Brittleness in concrete is one of the main disadvantage which increases with increase in the grade of concrete thereby increasing the formation of cracks. Fibres can be used to arrest the formation of cracks. Fracture mechanics is used in analysis of crack propagation in structures. In this study, notched beams were used to determine fracture parameters by conducting four point bending test. Beams with optimum percentage of basalt fibre, steel fibre and combination of basalt and steel fibre content respectively were used and fracture parameters were compared. Experimental results were used to validate the results obtained from numerical study using ABAQUS software. The fracture parameters like fracture energy, toughness, energy release rate, intrinsic brittleness and effective crack length increased with increase in percentage fibre content. Beams with basalt fibre content were found to have better fracture properties than beams with steel fibre content.
Brittleness in concrete is one of the main disadvantage which increases with increase in the grade of concrete thereby increasing the formation of cracks. Fibres can be used to arrest the formation of cracks. Fracture mechanics is used in analysis of crack propagation in structures. In this study, notched beams were used to determine fracture parameters by conducting four point bending test. Beams with optimum percentage of basalt fibre, steel fibre and combination of basalt and steel fibre content respectively were used and fracture parameters were compared. Experimental results were used to validate the results obtained from numerical study using ABAQUS software. The fracture parameters like fracture energy, toughness, energy release rate, intrinsic brittleness and effective crack length increased with increase in percentage fibre content. Beams with basalt fibre content were found to have better fracture properties than beams with steel fibre content.
