1. Deterioration and Failure Mechanisms
Asphalt Pavement
Deterioration and Failure Mechanisms
April 5, 2018

2. About Me
West Virginia University
Graduate Research Focus- Asphalt Technology
Aviation Civil Associate- Michael Baker International

3. Laboratory Performance Testing1
Primary Distresses: Rutting and Fatigue Cracking 2
Performance Tests: APA, Dynamic Modulus, Flow Number, Fatigue 3
Proprietary Blend of Polyolefin and Aramid Fibers

4. Rutting
Consolidation of Mix
Lateral movement of Aggregate

5. Full Depth- Fatigue
Block Cracking
Causes
Environment
Loading

6. Top- Down Fatigue
Longitudinal- Wheel- Path Cracking
Transverse Cracking

7. Top- Down Fatigue

8. Asphalt Pavement Analyzer

9. Asphalt Mixture Performance Tester- AMPT
All- in- One Testing Device
Tests Performed
Dynamic Modulus
Flow Number
Fatigue

10. Forta- Fi® Polyolefin and Aramid Fibers 400,000 psi Tensile Strength
¾” long monofilament
50% longer pavement life

11. Our Results- West Virginia University
APA- No significant Difference

12. Dynamic Modulus
No Significant Difference

13. Flow Number
No Significant DIfference

14. Fatigue

15. Fatigue

16. Arizona State Research

17. Arizona State University Testing
Flow Number Testing

18. Arizona State University Testing
Fatigue Testing

19. More work needs to be done
Conclusion
Primary Distresses
Rutting
Fatigue
More work needs to be done

20. QUESTIONS?