Accession Number:

ADA275446

Title:

Toward A Molecular Scale Understanding of Frost Heaving: Phase 1

Descriptive Note:

Final rept. 15 Apr 90-30 Sep 93,

Corporate Author:

PURDUE RESEARCH FOUNDATION LAFAYETTE IN

Personal Author(s):

Report Date:

1993-12-13

Pagination or Media Count:

15.0

Abstract:

A fundamental understanding of the physical and chemical basis for frost heaving is of utmost importance for improving the design of structures for use in cold regions The research reported here represents a multidisciplinary effort to develop a molecular-scale understanding of this cold region phenomena. Propagation of the molecular-scale information to a field scale is also important and the scale-up problem has also been addressed. A multiphase, multicomponent hybrid theory of mixtures approach was used to scale up information. Equilibrium and nonequilibrium statistical mechanical tools were developed and employed to examine nonlocal diffusion and dispersion. Phase transition were studied with MC and MD methods. New techniques were developed to compute the chemical potential of the vicinal phase. Interfacial tension was studied using GCEMC. Anomalous diffusion in monolayer films was analyzed via MD, scaling arguments and fractal Brown motion.

Subject Categories:

  • Soil Mechanics
  • Snow, Ice and Permafrost
  • Thermodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE