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Florida Atlantic University
College of Engineering & Computer Science
Announces the
Ph.D. Dissertation Defense
of
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Jamie Polidora
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for the Degree of
Doctor of Philosophy (Ph.D.)
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DISSERTATION TITLE: "Fracture and Fatigue Behavior of Geosynthetic Reinforced Asphalt Concrete for Pavement Overlays"
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Mon., Oct. 2 at 12 p.m.
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Florida Atlantic University
777 Glades Road, EW 187
Boca Raton Campus
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DEPARTMENT: Ocean and Mechanical Engineering
CHAIR OF THE CANDIDATE’S PH.D. COMMITTEE: Khaled Sobhan, Ph.D.
PH.D. SUPERVISORY COMMITTEE:
George Q. Cai, Ph.D.
Javad Hashemi , Ph.D.
Dronnadula V. Reddy, Ph.D.
Chi-Tay Tsai, Ph.D.
Yan Yong, Ph.D.
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ABSTRACT OF DISSERTATION
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Asphalt pavements are an integral part of the world today spanning 2.7 miles of roadways in the United States with 94% of those roads being asphalt pavement. In most resurfacing or rehabilitation project, the existing asphalt pavement is milled and an overlay is placed. The average time between resurfacing projects varies depending on the level of pavement deterioration which is significantly accelerated when soft soils and poor subgrade conditions are encountered. Use of geoynthetics in the overlay may provide an effective near surface strategy to mitigate premature deterioration. However, some mixed reviews about the performance of the geosynthetic overlay have been found in the literature.
Therefore, the current laboratory investigation was undertaken to evaluate the fatigue, fracture and permanent deformation behavior of a geosynthetic reinforced asphalt overlay material. This mechanical behavior is tied directly to the cracking and rutting behavior of flexible pavement overlay in the field. In addition, the efforts are made to determine the optimum location of the geosynthetic within the overlay system.
Lessons learned from the laboratory investigations are used to model and analyze a pavement reconstruction case study involving a reinforced asphalt overlay under poor subgrade conditions in southeast Florida. Some design guidelines are provided on the use of geosynthetics for optimum performance of asphalt overlays.
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BIOGRAPHICAL SKETCH
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- Born in South Florida.
- B.S. 2007, Florida Atlantic University, Boca Raton, Florida
- M.S. 2008, Florida Atlantic University, Boca Raton, Florida
- Ph.D. 2017, Florida Atlantic University, Boca Raton, Florida
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CONCERNING PERIOD OF PREPARATION & QUALIFYING EXAMINATION
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Time in Preparation: 2011—2017
Qualifying Examination Passed: Summer 2011
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777 Glades Road, EE 308, Boca Raton, FL 33431-0991•
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