Road structure – process – or apparatus – Process
Patent
1980-08-08
1984-04-03
Byers, Jr., Nile C.
Road structure, process, or apparatus
Process
404 17, 404 83, E01C 306
Patent
active
044405200
ABSTRACT:
A method and apparatus for constructing an ice aggregate structure, such as a road, at all sub-freezing temperatures likely to be encountered at high latitudes, including below -45.degree. F. Initially, ice is mined, crushed and then stripped of substantially all "fines", i.e., ice particles smaller than approximately 0.1 inch. The resulting crushed ice aggregate is then distributed and placed to the desired grade without requiring surface work or compaction. The upper thickness of the crushed ice aggregate is then bonded by spraying heated water thereon during single or multiple passes. Apparatus is provided to prevent evaporative cooling of the spray water prior to its contact with the crushed ice surface, which preferably comprises an enclosure or flexible skirt which extends around the spray nozzles downwardly to the ice aggregate surface. Substantially immediately following the final spray pass, normal wheeled traffic, such as machines utilized to form the ice aggregate road and to transport crushed ice and bond water, can be permitted to traverse the bonded crushed ice aggregate.
A preferred embodiment of a crushed ice placement and bonding machine is disclosed which permits a smooth ice aggregate surface to be constructed over uneven terrain. The machine is capable of changing grade as may be required to ramp-on or ramp-off a structure or to clear a natural obstruction, and includes means for incorporating super-elevation (banking) into road curves. The machine is totally self-contained and self-sufficient, and permits construction, on a continuous flow basis, of roads and other civil structures over natural terrain without any machinery contact with the terrain. That is, the machine is capable of operating from the surface that it constructs.
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Adam, Kenneth M., Building and Operating Winter Roads in Canada and Alaska, Minister of Supply Services, Canada 1978, pp. 59-61.
Proceedings of the Symposium: Surface Protection Through Prevention of Damage (Surface Management): Focus: The Arctic Slope, Mar. 1978, Anchorage, Alaska, pp. 176-189.
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Fisher, Edwin N., Ice Aggregate Road Construction, Alaskan Gas Study Company, Fairbanks Field Test Interim Report, 2/22/77-3/8/77.
Fisher, Edwin N., Development of the Ice Aggregate Construction System, Alaskan Arctic Gas Study Company, Aug. 1977.
Atlantic Richfield Company
Byers Jr. Nile C.
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