PREDICTION AND CONTROL OF FIELD SWELL PRESSURES OF COMPACTED MEDIUM PLASTIC CLAY
This study investigates the swelling pressure response of a medium plastic clay (AASHTO A-6) compacted both in the field and in the laboratory. Correlation was attempted to provide a prediction process for the field result. Swelling pressure was controlled by water content deviation from optimum, compactive effort, dry density, and various interactions among these terms. Regression models for laboratory and field results are different. Variability in dry density and swelling pressure was sizeable but predictable, with the field variability being larger. Prediction models were developed for expected average and maximum swelling pressure. Charts enable the engineer to select the compaction variables that will control the swelling pressure to a desired maximum value. A computer program creates tabulations allowing the prediction of maximum swelling pressure for a field soil knowing inspection testing results. (FHWA)
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Corporate Authors:
Purdue University/Indiana Department of Transportation JHRP
Purdue University, School of Civil Engineering
West Lafayette, IN United States 47907-1284Indiana State Highway Commission
Indianapolis, IN United States 46204Federal Highway Administration
1200 New Jersey Avenue, SE
Washington, DC United States 20590 -
Authors:
- Terdich, G M
- Publication Date: 1981-3-17
Media Info
- Pagination: 186 p.
Subject/Index Terms
- TRT Terms: Compacted clays; Computer programs; Dry density; Forecasting; Mathematical models; Moisture content; Plastic soils; Regression analysis; Swelling; Variables
- Uncontrolled Terms: Interaction; Swell pressure
- Old TRIS Terms: Dry density (Soils)
- Subject Areas: Data and Information Technology; Geotechnology; Highways; I42: Soil Mechanics;
Filing Info
- Accession Number: 00341483
- Record Type: Publication
- Report/Paper Numbers: FHWA/IN/JHRP-81/4 Intrm Rpt., FCP 4053-562
- Contract Numbers: 1(18) Part II
- Files: TRIS, ATRI, USDOT
- Created Date: Dec 22 1981 12:00AM