Accession Number : AD0291698

Title :   POINT BARROW TRIALS - FY 1960; FREE FLOODED AND ICE-AGGREGATE-FILL

Descriptive Note : Final rept.

Corporate Author : NAVAL CIVIL ENGINEERING LAB PORT HUENEME CALIF

Personal Author(s) : DYKINS,J.E. ; STEHL,N.S. ; GRAY,K.O.

Report Date : 23 NOV 1962

Pagination or Media Count : 74

Abstract : During the winter of 1959-60, trials were conducted at Point Barrow, Alaska to further develop techniques for increasing the bearing strength of ice sheets by increasing their thickness and to observe the behavior of the ice types during the rising temperatures of an arctic pring. For comparison, one confined flooded test plot was constructed concurrently with the free flooded plot and one was constructed concurrently with the ice-aggregate plots. Temperature, salinity, density and strength of the various types of constructed sea ice and the natural sea ice were compared. Free flooding was the simplest construction technique. Both types of aggregate used in the dry-fill method (fractured young sea ice and chipped natural sea ice) proved difficult to handle and much of the equipment was too large for the small plots. Placement of the aggregate fill influence the temperature of the underlying natural ice less than did the flood construction. Approximately one week after completi n f construction the average ice temperatures of all plots were within a few degree of each other. Of the 7 iceaggregate-fill plots, 4 had lower strength values than the flooded ice, and 3 had higher values. During the thaw period, the aggregate-fill ice deteriorated faster than the free flooded or the confined flooded ice. (Author)

Descriptors :   *ICE, CLIMATE, DEGRADATION, DENSITY, POLAR REGIONS, SEA WATER, SHEETS, STRUCTURES, TEMPERATURE, TENSILE PROPERTIES, THICKNESS

Distribution Statement : APPROVED FOR PUBLIC RELEASE