Material Testing and Initial Pavement Design Modeling.

• Main Authors: Bigi, Susan R., Berg, Richard L.
• Other Authors: COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH
• Format: Text
• Language: English
• Published: 1996
• Subjects: Civil Engineering; *PAVEMENTS; TEST AND EVALUATION; INPUT; POSITION(LOCATION); ARMY RESEARCH; PARAMETERS; MATERIALS; FACILITIES; ASPHALT; COLD REGIONS; SEASONAL VARIATIONS; FREEZING; CONSTRUCTION; ROAD TESTS; FROST; ROADS; PRODUCTIVITY; WATER TABLE; MINNESOTA; Cold Regions Research and Engineering Laboratory
• Online Access: http://www.dtic.mil/docs/citations/ADA321629; http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA321629

Between January 1990 and December 1994, a study verified and applied a Corps of Engineers-developed mechanistic design and evaluation method for pavements in seasonal frost areas as part of a Construction Productivity Advancement Research (CPAR) project between the Minnesota Department of Transportation (Mn/DOT) and the U.S. Army Cold Regions Research and Engineering Laboratory (CRREL). The study involved four primary components. Mn/DOT constructed a full scale pavement test facility adjacent to Interstate 94, referred to as the Minnesota Road Research Project (Mn/ROAD). CRREL performed extensive laboratory tests on the base and subgrade materials from Mn/ROAD to characterize them and their behavior under seasonal frost conditions. Laboratory tests provided the input parameters necessary for the study's third component, modeling with the CRREL Mechanistic Pavement Design and Evaluation Procedure. The modeling effort was conducted in three phases, which investigated the effects of freeze season characteristics, water table position, asphalt model and subgrade characteristics on the predicted performance of selected Mn/ROAD test sections. Delays in construction on the Mn/ROAD facility prevented the completion of the study's fourth component-using performance data from Mn/ROAD to validate the mechanistic pavement design and evaluation procedure. The report details results from the other three components.