Accession Number : ADA322864

Title :   A Check on Scaling Laws for Physical Modelling of Geotechnical Freeze-Thaw Effects Using the Centrifuge.

Descriptive Note : Final rept.,

Corporate Author : MARYLAND UNIV COLLEGE PARK DEPT OF CIVIL ENGINEERING

Personal Author(s) : Goodings, Deborah J.

PDF Url : ADA322864

Report Date : 1996

Pagination or Media Count : 9

Abstract : Experimental data collected support the theorized scaling laws that predict that frost heave and thaw settlement in soil developing over one winter can be physically simulated over a matter of hours by freezing and thawing soil while rotating it on the arm of a geotechnical centrifuge. Different soils, ground water levels, and temperature regimes have been physically modelled at different scales. Comparison of an existing Army numerical model of heave in simple soil profiles has shown physical model results to be valuable to calibrate these numerical models for surface heave in silt, but to be less useful for clayey soil. Frost penetration, in contrast, is not predicted well. Tests simulating heave and settlement developing over several years of freezing and thawing, both with and without a buried element have also been conducted.

Descriptors :   *FROST HEAVE, *GEOLOGIC MODELS, EXPERIMENTAL DATA, CENTRIFUGES, FREEZING, SCALING FACTOR, THAWING, TIME COMPRESSION.

Subject Categories : Geology, Geochemistry and Mineralogy

Distribution Statement : APPROVED FOR PUBLIC RELEASE