United States Department of Transportation
i
Long-Term benefits of stabilizing soil subgrades.
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2002-06-01
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[PDF-1.97 MB]
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Abstract:The main intent of this study was an attempt to address questions concerning bearing strengths, longevity, durability, structural credit, economics, and performance of pavements resting on soil subgrades mixed with chemical admixtures. In-depth field and laboratory studies were performed at fourteen roadway sites containing twenty different treated subgrade sections. Ages of the sites range from about 8 to 15 years. About 455 boring were made at the various sites. Air. instead of water, was used as the drilling media. In-situ CBR tests were performed on the treated subgrades and the untreated subgrades lying directly below the treated layers. Falling weight deflectormeter (FWD) tests were performed.
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