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1
CRACKING OF SHCC DUE TO
REINFORCEMENT CORROSION
B. Šavija, M. Luković, J. Pacheco, E.Schlangen
2
• Introduction
• X-ray CT
• Nanoindentation
• Modelling
• Conclusion
8 weeks!
28 days?
3
• Introduction
• X-ray CT
• Nanoindentation
• Modelling
• Conclusion
4
Scan 1
Scan 3
Scan 2
Scan 5
Scan 4 Scan 1
Scan 2
Scan 3
Scan 4
• Introduction
• X-ray CT
• Nanoindentation
• Modelling
• Conclusion
5
• Introduction
• X-ray CT
• Nanoindentation
• Modelling
• Conclusion
6
• Introduction
• X-ray CT
• Nanoindentation
• Modelling
• Conclusion
7
• Introduction
• X-ray CT
• Nanoindentation
• Modelling
• Conclusion
8
Average rust E
modulus:
67.9 GPa, 64.3
GPa, 49.4 GPa
• Introduction
• X-ray CT
• Nanoindentation
• Modelling
• Conclusion
9
Average rust E
modulus:
Lower!
• Introduction
• X-ray CT
• Nanoindentation
• Modelling
• Conclusion
10
• Introduction
• X-ray CT
• Nanoindentation
• Modelling
• Conclusion
11
Šavija et al. (2014), CBM
• Introduction
• X-ray CT
• Nanoindentation
• Modelling
• Conclusion
12
• X-ray computed tomography successfully used to study
corrosion induced cracking
• (dissolved) Corrosion products clearly “migrate” into voids and
open cracks, thereby relieving some of the expansion pressure
• SHCC showed superior resistance to corrosion induced cracking
compared to the control mixture
• Young modulus of rust is not a constant value, and depends on
the level of confinement! It decreases with the increase of
damage, thereby decreasing expansion pressure!
• The process can be simulated using the Delft lattice model
• Introduction
• X-ray CT
• Nanoindentation
• Modelling
• Conclusion
13
b.savija@tudelft.nl

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Framcos-9

  • 1. 1 CRACKING OF SHCC DUE TO REINFORCEMENT CORROSION B. Šavija, M. Luković, J. Pacheco, E.Schlangen
  • 2. 2 • Introduction • X-ray CT • Nanoindentation • Modelling • Conclusion 8 weeks! 28 days?
  • 3. 3 • Introduction • X-ray CT • Nanoindentation • Modelling • Conclusion
  • 4. 4 Scan 1 Scan 3 Scan 2 Scan 5 Scan 4 Scan 1 Scan 2 Scan 3 Scan 4 • Introduction • X-ray CT • Nanoindentation • Modelling • Conclusion
  • 5. 5 • Introduction • X-ray CT • Nanoindentation • Modelling • Conclusion
  • 6. 6 • Introduction • X-ray CT • Nanoindentation • Modelling • Conclusion
  • 7. 7 • Introduction • X-ray CT • Nanoindentation • Modelling • Conclusion
  • 8. 8 Average rust E modulus: 67.9 GPa, 64.3 GPa, 49.4 GPa • Introduction • X-ray CT • Nanoindentation • Modelling • Conclusion
  • 9. 9 Average rust E modulus: Lower! • Introduction • X-ray CT • Nanoindentation • Modelling • Conclusion
  • 10. 10 • Introduction • X-ray CT • Nanoindentation • Modelling • Conclusion
  • 11. 11 Šavija et al. (2014), CBM • Introduction • X-ray CT • Nanoindentation • Modelling • Conclusion
  • 12. 12 • X-ray computed tomography successfully used to study corrosion induced cracking • (dissolved) Corrosion products clearly “migrate” into voids and open cracks, thereby relieving some of the expansion pressure • SHCC showed superior resistance to corrosion induced cracking compared to the control mixture • Young modulus of rust is not a constant value, and depends on the level of confinement! It decreases with the increase of damage, thereby decreasing expansion pressure! • The process can be simulated using the Delft lattice model • Introduction • X-ray CT • Nanoindentation • Modelling • Conclusion