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Author: Gunars Abele
Publisher:
ISBN:
Category : Civil engineering
Languages : en
Pages : 112
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Book Description
Author: Gunars Abele
Publisher:
ISBN:
Category : Civil engineering
Languages : en
Pages : 112
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Book Description
Author: Gunars Abele
Publisher:
ISBN:
Category : Ice crossings
Languages : en
Pages : 0
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Book Description
Author: Gunars Abele
Publisher:
ISBN:
Category : Ice
Languages : en
Pages : 48
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Book Description
Dynamic tests were performed to determine the Young's modulus of sea ice, derived from longitudinal wave velocities measured with a soniscope. Static tests consisted of standard ring tensile strength and simple beam or flexural strength tests. The strength data were plotted on a base of the brine volume for each test. The test results indicate that the annual sea ice at McMurdo Sound is capable of supporting cargo type aircraft. Snow runways capable of supporting a C-130 aircraft on wheels and providing marginal support to a C-121 can be constructed either with the Peter plow or with the pulvimixer. However, the runway would be reliable only during comparatively low temperatures (
Author: Albert F. Wuori
Publisher:
ISBN:
Category : Compacting
Languages : en
Pages : 20
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Book Description
A stdy of methods of stabilizing snow for roads and runways was conducted on the Greenland Ice Cap during the summer of 1959. Ten test lanes were constructed to determine the effect of various machine speeds, cutting, and compaction techniques; 7 lanes were dry-processes, 3 lanes dry- and heat-processed. The dry-processing methods included use of Snowblast and Peter miller rotary plows followed by leveling and compaction with a D-8 low ground pressure tractor. A T-5 Snow Packer was used in the heat-processing tests. Tests showed that dry processing produced a pavement structure capable of supporting certain types of wheeled cargo aircraft after 3 weeks of age hardening. Apparently heat processing of a thin surface layer is required to support aircraft with tire pressures exceeding 100 psi. (Author).
Author: Gunars Abele
Publisher:
ISBN:
Category :
Languages : en
Pages : 74
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Book Description
Author: United States. National Technical Information Service
Publisher:
ISBN:
Category : Ice prevention and control
Languages : en
Pages :
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Book Description
Author: United States. National Technical Information Service
Publisher:
ISBN:
Category : Ice prevention and control
Languages : en
Pages : 154
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Book Description
Author: United States. National Technical Information Service
Publisher:
ISBN:
Category : Roads
Languages : en
Pages : 202
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Book Description
Author: Kent Gustafson
Publisher:
ISBN:
Category : Ice prevention and control
Languages : en
Pages : 60
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Book Description
Author: G. E. Sherwood
Publisher:
ISBN:
Category : Runways (Aeronautics)
Languages : en
Pages : 26
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Book Description
Techniques and equipment have been developed to utilize clean, undisturbed snow as a building material for emergency and temporary roads, runways, and skiways in polar regions. However, these routes are often needed in areas where the snow is contaminated. During Deep Freeze 65, a compacted-snow runway was constructed in an area of contaminated snow near McMurdo, Antarctica. The area had been contaminated by oil spillage, soot, and debris from previous operations. Physical property tests were conducted on the compacted snow near the end of Deep Freeze 65 and during Deep Freeze 66. It was concluded that contaminated snow can be processed to produce load-carrying material capable of supporting C-130 aircraft and other heavy loads at temperatures below 20F; however, because of the extra work involved to clear and process such snow, its marginal load-carrying capabilities at temperatures above 20F, and the possibility of low-strength areas, its use is not recommended where clean snow is available. New processing techniques resulted in improved quality control of compacted snow, and it was recommended that effort be continued to improve processing techniques. (Author).
