Deterioration and Failure Mechanisms

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Presentation transcript:

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

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

Laboratory Performance Testing 1 Primary Distresses: Rutting and Fatigue Cracking 2 Performance Tests: APA, Dynamic Modulus, Flow Number, Fatigue 3 Proprietary Blend of Polyolefin and Aramid Fibers

Rutting Consolidation of Mix Lateral movement of Aggregate

Full Depth- Fatigue Block Cracking Causes Environment Loading

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

Top- Down Fatigue

Asphalt Pavement Analyzer

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

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

Our Results- West Virginia University APA- No significant Difference

Dynamic Modulus No Significant Difference

Flow Number No Significant DIfference

Fatigue

Fatigue

Arizona State Research

Arizona State University Testing Flow Number Testing

Arizona State University Testing Fatigue Testing

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

QUESTIONS?

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