Axial Double-Ball Test Versus the Uniaxial Unconfined Compression Test for Measuring the Compressive Strength of Freshwater and Sea Ice

Axial double-ball load tests were made on freshwater ice and first- year and multiyear sea ice. From this simple test method the apparent unconfined compressive strength of the ice was determined. These strength results were compared with those obtained from the complex and costly uniaxial unconfine...

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Bibliographic Details
Main Author: Kovacs, Austin
Other Authors: COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH
Format: Text
Language:English
Published: 1993
Subjects:
Snow
Ice and Permafrost
*ICE MECHANICS
*ICE
*SEA ICE
*COMPRESSIVE STRENGTH
TEST AND EVALUATION
COMPRESSION
POROSITY
STRAIN RATE
AXIAL LOADS
FAILURE(MECHANICS)
FRESH WATER
STRENGTH(MECHANICS)
DENSITY
TEST METHODS
Ice
permafrost
Sea ice
Online Access:http://www.dtic.mil/docs/citations/ADA277025
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA277025
Description
Summary:Axial double-ball load tests were made on freshwater ice and first- year and multiyear sea ice. From this simple test method the apparent unconfined compressive strength of the ice was determined. These strength results were compared with those obtained from the complex and costly uniaxial unconfined compression test made on similar ice at a strain rate of 10-3 s-1. The scatter in the test data and the average ice strength obtained from both test methods were similar. The findings indicate that the expedient axial double-ball load test is well suited for determining the unconfined compressive strength of ice, especially in the field where the demanding sample preparation requirements needed for unconfined compression test samples cannot be met. Compressive strength, Ice, Sea ice, Freshwater ice, Ice strength.

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