1. ERDC Knowledge Core
2. Pre - Engineer Research and Development Center (ERDC)
3. Soils and Pavements Laboratory - (8/1/1972 - 4/16/1978)
4. Publication
5. Miscellaneous Paper

Title:	Effect of variation in conventional soil properties on dynamic constrained modulus for several glacial tills
Authors:	Mississippi State University. Department of Civil and Environmental Engineering Taylor, Hugh M.
Keywords:	Constitutive relations Glacial till Ground shock Soil dynamics Soil properties Soil mechanics Soil tests Soil testing Geology North Dakota Montana
Publisher:	Soils and Pavements Laboratory (U.S.) Engineer Research and Development Center (U.S.)
Description:	Miscellaneous Paper Abstract: This report presents the results of an effort to analyze and correlate data from tills to determine if the dynamic constitutive relations needed for ground shock code input are predictable from simple index and seismic tests. Data from glacial tills at seven sites in the northern United States were used successfully to correlate secant constrained moduli with percent saturation and percent air in a unit volume of soil. These correlations indicated trends distinctive enough to use either of the correlations to approximately predict, for a till, the loading portion of the UX stress-strain curve to a stress of about 500 psi. Predictions using these correlations should be made with due consideration of the validity and amount of saturation and percent air data. In addition, some qualitative consideration should be given to the unit weight and seismic velocity ffata, the depth of weathering, and the location of the groundwater table. For the tills investigated in this study, dry density, UU strength, and Young's modulus taken from the static UU stress-strain curve cannot generally be used to predict the secant constrained moduli to the stress levels of interest.
Rights:	Approved for public release; distribution is unlimited.
URI:	http://hdl.handle.net/11681/20744
Appears in Collections:	Miscellaneous Paper