Abstract
A new method to predict the debonding behavior of fiber-matrix interface has been proposed by applying the principles of the micromechanics of inclusion and fracture mechanics. The validity of the mathematical model is further verified by uniaxial tension tests carried out on steel fiber reinforced cementitious composite specimens by employing a digitally controlled closed-loop MTS testing machine. It is demonstrated that the debonding occurs before the bend over point and the debonded lengths are largely influenced by the sequence of the occurrence of transverse matrix cracks and the loading stage. A stable growth of debonding has been observed in the investigation. The measured debonded lengths are compared with the theoretical prediction of the proposed model. A reasonable agreement is observed.
| Original language | English (US) |
|---|---|
| Title of host publication | Interface Fracture and Bond |
| Editors | Oral Buyukozturk, Methi Wecharatana |
| Publisher | American Concrete Institute |
| Pages | 125-152 |
| Number of pages | 28 |
| ISBN (Electronic) | 9780870316548 |
| State | Published - Sep 1 1995 |
| Externally published | Yes |
Publication series
| Name | American Concrete Institute, ACI Special Publication |
|---|---|
| Volume | SP-156 |
| ISSN (Print) | 0193-2527 |
Funding
Acknowledgments: This research was supported by the National Science Foundation Center for Science and Technology of Advanced Cement-Based Materials (ACBM) through Grant DMR-9120002. Partial support from Air Force Office of Scientific Research under grant F49620-92-J-0319 was also acknowledged.
Keywords
- Cracking (fracturing)
- Debonding: fiber reinforced concretes: fluorescence
- Fracture mechanics
- Interface: mathematical models
- Microscopy
- Tension
ASJC Scopus subject areas
- Civil and Structural Engineering
- Building and Construction
- General Materials Science