Advanced Testing and Characterization of Iowa Soils and Geomaterials

Project Details
STATUS

In-Progress

PROJECT NUMBER

TR-730

START DATE

11/30/17

END DATE

10/31/20

FOCUS AREAS

Infrastructure

RESEARCH CENTERS InTrans, PROSPER
SPONSORS

Iowa Department of Transportation
Iowa Highway Research Board

Researchers
Principal Investigator
Bora Cetin
Co-Principal Investigator
Halil Ceylan

Director, PROSPER

About the research

Most pavement designs and road infrastructure performance predictions are made based on the laboratory characterization of the materials that are used during pavement construction. However, these designs made with material properties tested with standard test methodologies do not typically fulfill their predicted service life and often require early and more frequent maintenance practices. Moreover, field and laboratory performance of pavement materials do not usually agree well with each other which adds more complexity to the pavement designs. The main reason for these problems is the standard test methods used to characterize the strength and stiffness of materials used in pavement designs. Standard testing methods do not incorporate the anisotropic behavior and stress dependency of materials and do not simulate climate conditions (cold and hot temperature) on materials.

The objectives of the research are to build an advanced geomaterial testing and characterization device to evaluate the anisotropic behavior of materials under dynamic/static load conditions, material performance under different climatic conditions, and pore pressure change in all directions.

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