Call number:
ZSP-201-76/21
In:
CRREL Report, 76-21
Description / Table of Contents:
The effects of snow temperature and initial density on the stress vs density and stress vs deformation relationships were investigated for shallow compacted snow in the density range of 0.28 to 0.76 g/cu m, for stress range of 0.5 to 72 bars and a temperature range of -1 to -34 C at a deformation rate of 40 cm/s. A decrease in temperature increases the resistance to stress, the effect increasing with applied stress. For any stress, an increase in the initial density results in an increase in the resulting density, the effect decreasing with an increase in stress. The approximate yield envelopes, which define the stress required to initiate any deformation of snow of a particular density and temperature, were determined. Rapid compaction of snow results in extensive recrystallization, significantly different from that of naturally compacted snow. At a stress of 72 bars, transformation to ice occurs only at temperature above -10C.
Type of Medium:
Series available for loan
Pages:
vi, 47 Seiten
,
Illustrationen
Series Statement:
CRREL Report 76-21
URL:
https://cdm16021.contentdm.oclc.org/digital/collection/p266001coll1/id/6184/rec/1
Language:
English
Note:
CONTENTS
Abstract
Preface
Nomenclature
Introduction
Description of study
Sample preparation
Test equipment and procedure
Discussion of results
Stress-density relationship
Stress-deformation relationship
Summary and conclusions
Microstructural examination of artifically compacted snow
Analytical techniques
Results and discussion
Conclusions
Literature cited
Appendix: Photographs of oscilloscope traces
Location:
AWI Archive
Branch Library:
AWI Library
