Effective Shoulder Design and Maintenance

David White, Mohamed Mekkawy, Charles Jahren, Duane Smith, and Muhannad Suleiman
2007-06-15
Iowa State University, Iowa Highway Research Board, Iowa Department of Transportation

This report includes observations made during a field reconnaissance study, findings from an effort to stabilize the granular and subgrade layer at six shoulder test sections, and the results of a laboratory box study where a shoulder section overlying a soft foundation layer was simulated. Based on the research described in this report, the following changes are proposed to the construction and maintenance methods for granular shoulders

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