Compressive strength of natural sea ice in horizontal loading

Samples of natural sea ice obtained from shorefast ice were loaded in compression, in the horizontal direction, both parallel and perpendicular to the C-axis, at a constant strain rate of 10 power in -3 sec power in -1. The average compressive strength parallel to the C-axis was 7.23 MPa at 10°C and...

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Bibliographic Details
Main Authors: Lehmus, Eila, Kärnä, Tuomo, Tanabe, Akio, Yoshizawa, Minoru, Ishibashi, Yoshitsugu, Sackinger, William
Other Authors: Chung, Jin S.
Format: Other Non-Article Part of Journal/Newspaper
Language:English
Published: International Society of Offshore and Polar Engineers ISOPE 1996
Subjects:
natural sea ice
compressive strength
horizontal loading
parallel to c-axis
strain rate
laboratory tests
Sea ice
Online Access:https://cris.vtt.fi/en/publications/75cc5880-13ca-4688-9f2d-d2f756c583af
Description
Summary:Samples of natural sea ice obtained from shorefast ice were loaded in compression, in the horizontal direction, both parallel and perpendicular to the C-axis, at a constant strain rate of 10 power in -3 sec power in -1. The average compressive strength parallel to the C-axis was 7.23 MPa at 10°C and 6.77 MPa at -20°C. This is in fair agreement with published values; the smaller strength at 20°C is attributed to the formation of internal microcracks upon thawing of the sodium chloride dihydrate in the brine inclusions, and the annealing of the microcracks prior to testing at the higher temperature.

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