RESILIENT PROPERTIES OF SUBGRADE SOILS
Equipment and laboratory testing procedures for evaluating the resilient properties of fine-grained soils were developed. Those soil properties that control and resilient properties of fine-grained soils were identified and quantified. Resilient properties of 50 typical Illinois soils were evaluated. Soil resilient properties can be related to soil characteristics (texture, plasticity, organic carbon content, AASHTO group index). Current classification procedures do not group fine-grained soils into groups with distincitive resilient properties. Moisture-density conditions and degree of saturation significantly influence the resilient properties of fine-grained soils. Average resilient properties for various soil classification groups were determined. Regression equations were developed for estimating resilient properties based on soil characteristics, degree of saturation, and volumetric water content. The utilization of resilient properties in pavement design were considered. The stress-dependent resilient properties of subgrade soils should be incorporated into the Illinois flexible pavement design procedure. CBR does not adequately evaluate the repeated load behavior of fine-grained soils.
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- This study was sponsored by Illinois DOT and was conducted in cooperation with DOT, Federal Highway Administration.
University of Illinois, Urbana-ChampaignDepartment of Civil and Environmental Engineering
205 North Mathews Avenue
Urbana, IL USA 61801-2352
- Thompson, M R
- Robnett, Q L
- Publication Date: 1976-6
- Features: Appendices; Figures; Tables;
- Pagination: 59 p.
- TRT Terms: Fine grained soils; Flexible pavements; Laboratory tests; Pavement design; Percent saturation; Properties of materials; Resilience; Soils; Subgrade (Pavements); Swelling index
- Uncontrolled Terms: Soil properties
- Old TRIS Terms: Soil characteristics
- Subject Areas: Geotechnology; Highways; Materials; Pavements;
- Accession Number: 00149343
- Record Type: Publication
- Source Agency: National Technical Information Service
- Report/Paper Numbers: FHWA-IL-UI-160 Final Rpt., FCP 45C2-152
- Files: TRIS
- Created Date: May 31 1977 12:00AM