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Change to Poster Presentation at the Conference, with Full Paper in Conference Proceedings

Highway & Airfield Pavement Numerical Modeling and Analytics

Session: Meet the Author - Poster Session PS-3

1374230 - Performance Prediction Comparison of Unreinforced and Fiber Reinforced Asphalt Mixtures for Airfield Pavements

Friday, June 16, 2023
8:30 AM – 10:00 AM CST
Room: Governor's Grand Ballroom
Salon ABC
TRACK: Poster Presentation with a Paper in the Proceedings
Fiber-reinforced asphalt mixes (FRAM) showed better laboratory fatigue and rutting performance for highway pavements compared to unreinforced mixes. However, the predicted performance of FRAM for airport pavements for various climates is still unknown. To address the issue, four fiber types (carbon 0.16%, glass 0.16%, basalt 0.16%, polyolefin/ aramid (PFA) 0.05%) and two binders’ grades (PG76-22 for the warm region and PG58-28 for the cold region) were used to simulate different climates. Typically, performance models used in airport pavement designs do not account for temperature variations during the service life of pavements. Discrete Laboratory measured dynamic modulus (|E*|) values and was selected according to the climatic conditions of NJ and Alaska. Discrete modulus values were incorporated into PCASE software at different seasons to determine minimum pavement thickness. The calculated minimum thickness was analyzed in the FAARFIELD software to determine the recently developed Pavement Classification Rating (PCR) and Cumulative Damage Factor (CDF) for unreinforced and reinforced mixtures. Higher PCR indicates the better load-carrying capacity of pavements, and lower CDF indicates lower fatigue damage to asphalt pavements. The results showed that FRAM mixtures have shown higher PCR and lower CDF values, illustrating better strength and fatigue life. FRAM fatigue performance is much better in a cold climate.

Learning Objectives:

Attendees can expect to learn the following from this session:
  • predicted performance of FRAM for airport pavements for various climates
  • load-carrying capacity of pavements
  • fatigue performance is much better in a cold climate