Dr. Daniel has research interests in the area of asphalt concrete. Specifically, her research has dealt with the constitutive modeling of asphalt concrete using viscoelasticity and continuum damage mechanics. Research topics also include investigating the rheological properties of asphalt mixtures containing Reclaimed Asphalt Pavement (RAP) and general asphalt concrete and asphalt pavement topics.

Selected Research Projects

Properties of Asphalt Mixtures Containing RAP

This project evaluates the effect of including RAP on the overall properties of asphalt concrete. The project will examine how properties change as different percentages of RAP are added and the variation in these properties if different sources of RAP and virgin materials are used. Rheological properties such as dynamic modulus, phase angle, and creep compliance will be evaluated as a function of testing time or frequency and temperature to develop master curves. These rheological properties are needed as input parameters for the AASHTO 2002 Design Guide. Additionally, the properties required for the Simple Performance Test will be measured to predict the field performance of the mixtures.

Selected Publications

Daniel, J.S., and Y.R. Kim, "Development of a Simplified Fatigue Test and Analysis Procedure using a Viscoelastic Continuum Damage Model," accepted for publication in the Journal of the Association of Asphalt Pavement Technologists, 2002.

Daniel, J.S., and Y.R. Kim, "Laboratory Evaluation of Fatigue Damage Growth and Healing of Asphalt Concrete Mixtures Using the Impact Resonance Method," ASCE Journal of Materials in Civil Engineering, Vol. 13, No.6, Nov/Dec 2001, pp. 434-440.

Lee, H.J., J.S. Daniel, and Y.R. Kim, "Continuum Damage Mechanics-Based
Fatigue Model of Asphalt Concrete," ASCE Journal of Materials in Civil
Engineering, Vol. 12, No. 2, May 2000, pp. 105-112.

Daniel, J.S., Y.R. Kim, and H.J. Lee, "Effects of Aging on Viscoelastic Properties of Asphalt-Aggregate Mixtures," Transportation Research Record 1630, TRB, National Research Council, Washington, D.C., 1998, pp. 21-27.

Daniel, J.S., and Y.R. Kim, "Relationships Among Rate-Dependent Stiffnesses of Asphalt Concrete Using Laboratory and Field Test Methods," Transportation Research Record 1630, TRB, National Research Council, Washington, D.C., 1998, pp. 3-9.

Selected Research Grants

"Properties of Asphalt Mixtures Containing RAP," Recycled Materials Resource Center, 6/02 to 12/03, $68,765.

"Mechanistic Properties of Asphalt Mixtures Containing Recycled Asphalt Pavement," Graduate School Summer Faculty Fellowship, UNH 2002, $4625.

"Changes in Asphalt Mixture Properties with the Addition of Recycled Asphalt Pavement Material," Vice President for Research and Public Service Discretionary Research Fund, UNH 2002, $6850.

Teaching Interests

CiE 681, Classical Structural Analysis, Fall 2001
CiE 529, Mechanics of Materials, Spring 2002
CiE 723/823, Bituminous Materials and Mixtures, Spring 2002
CiE 525, Statics, Fall 2002

Bio

Ph.D., Civil Engineering, North Carolina State University, May 2001.
M.S., Civil Engineering, North Carolina State University, August 1996.
B.S., Civil Engineering, University of New Hampshire, May 1994.

Current Graduate/Undergraduate Students

Dr. Daniel is currently working with three students:

• Aaron Lachance (grad)
• Erin Luckhardt (undergrad)
• Ross Wood (undergrad)