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Resilient Modulus Characterization of Alaskan Granular Base Materials
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2010-08-01
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[PDF-843.96 KB]
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Alternative Title:Project title: Impact of Fines Content on Resilient Modulus Reduction of Base;Courses during Thawing;
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Edition:Final project report.
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Abstract:Resilient modulus (MR) of base course material is an important material input for
pavement design. In Alaska, due to distinctiveness of local climate, material source,
fines content and groundwater level, resilient properties of D-1 granular base course
materials are significantly affected by seasonal changes. The presence of fines (P200)
affects frost susceptibility of base materials and controls the aggregates’ ability to
support vehicular load, especially during the spring-thaw period. To systematically
evaluate the impact of fines content on the resilient properties of D-1 base course
materials with varied fines content, gradation, moisture content and temperature
during thawing and provide regression coefficients ki which are required for the
flexible pavement design, a laboratory investigation was conducted on D-1 materials
from Northern, Central, and Southeast Regions of Alaska Department of
Transportation and Public Facilities (AKDOT&PF) at different temperatures,
moisture and fines contents.
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