Abstract
This work is aimed at establishing the fracture characteristics of sisal fibre reinforced concrete, using a model similar to the one proposed by Visalvanich and Naaman for the fracture characterization of steel fibre reinforced concrete. A theoretical fracture model equation, requiring as imput experimental data obtained from tests on notched tensile specimens, is developed to predict the crack resistance curve for sisal fibre concrete. This model can predict the steady state fracture energy Gc, using as input parameters the volume fraction of the fibre Vf, the length of the fibre Lf and the fibre diameter φ. In order to confirm the validity of the theoretical model, experimental data for computation of fracture energy was obtained from several fracture tests using double cantilever beam specimens. Close correlation is seen between the fracture energy curve as obtained from test measurements and the proposed theoretical model. It is also shown that the concept of critical crack opening angle (CCOA) as a fracture criterion is applicable to sisal fibre reinforced concrete, and is found to be a function of the fibre reinforcing parameter, VfLf/φ.
| Original language | English |
|---|---|
| Pages (from-to) | 157-168 |
| Number of pages | 12 |
| Journal | International Journal of Cement Composites and Lightweight Concrete |
| Volume | 9 |
| Issue number | 3 |
| DOIs | |
| State | Published - Aug 1987 |
Keywords
- Fibre cement composites
- compliance (elasticity)
- crack propagation
- cracking (fracturing)
- critical crack opening
- fracture (materials)
- fracture energy
- fracture tests
- mathematical models
- sisal
ASJC Scopus subject areas
- General Materials Science
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