Accession Number : ADA146410
Title : Ice Segregation and Frost Heaving.
Descriptive Note : Final rept. 1 Sep 83-30 Jun 84,
Corporate Author : NATIONAL RESEARCH COUNCIL WASHINGTON DC POLAR RESEARCH BOARD
Report Date : Jan 1984
Pagination or Media Count : 85
Abstract : Major engineering projects have focused attention on problems created by the freezing of water in earth materials. These problems received detailed attention during the design of the Alaska Natural Gas Transportation System. They also have received attention in the design and construction of pipelines in Siberia and Canada. The problems arise from the tendency of ice to form in segregated from the surrounding soil. As these lenses grow, they are capable of generating large pressures that disturb the surface of the ground. The term frost heaving is used to describe this phenomenon. Efforts to design roadways, airfields, buildings, powerlines, and other structures to prevent damage from frost heaving date from the early 1900s. Because of the seriousness of the problem, much time and money have been expended in searching for methods of predicting and controlling ice segregation and frost heaving. Unfortunately, misunderstanding and controversy have developed due to inadequate knowledge of the physical processing involved, and due to the widely differing backgrounds of scientists and engineers who have been working on the problem.
Descriptors : *ICE FORMATION , *FROST HEAVE , SOILS , LENSES
Subject Categories : Snow, Ice and Permafrost
Distribution Statement : APPROVED FOR PUBLIC RELEASE