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Author: C. W. Kaplar Publisher: ISBN: Category : Frost heaving Languages : en Pages : 32
Book Description
Experiments conducted at USA CRREL in recent years indicate that the two weeks or so required for the frost susceptibility testing of soils with previous procedures can be shortened considerably. Results of these experiments show that useful frost heaving data can be obtained in a matter of 2 or 3 days by a more rapid freezing technique. Results of experiments in which soil specimens were exposed to a constantly maintained temperature are presented. Data show that heave rate in laboratory experiments is a variable, not a constant, of a soil and is strongly dependent upon the heat extraction rate. The important role of frost susceptibility testing and soil evaluation for highway design is discussed. The suitability of equipment for use in conducting frost-heaving tests is also discussed. (Author).
Author: C. W. Kaplar Publisher: ISBN: Category : Frost heaving Languages : en Pages : 32
Book Description
Experiments conducted at USA CRREL in recent years indicate that the two weeks or so required for the frost susceptibility testing of soils with previous procedures can be shortened considerably. Results of these experiments show that useful frost heaving data can be obtained in a matter of 2 or 3 days by a more rapid freezing technique. Results of experiments in which soil specimens were exposed to a constantly maintained temperature are presented. Data show that heave rate in laboratory experiments is a variable, not a constant, of a soil and is strongly dependent upon the heat extraction rate. The important role of frost susceptibility testing and soil evaluation for highway design is discussed. The suitability of equipment for use in conducting frost-heaving tests is also discussed. (Author).
Author: C. W. Kaplar Publisher: ISBN: Category : Soil freezing Languages : en Pages : 46
Book Description
The report presents a description of the equipment and procedures used in the laboratory test of the relative frost susceptibility of different soils on Corps of Engineers construction projects and includes typical results of freezing tests of natural soils. The test uses a slow unidirectional freezing of a 6-in. high, remolded or undisturbed soil specimen with water available at the base (open system). The heaving rate measured during the test is used as the basis for classification of the frost susceptibility potential of the soil. This type of test, which measures heaving rate, is considered most versatile and adaptable for evaluating the effects of numerous soil parameters on frost heave. (Author).
Author: Stuart A. Harris Publisher: CRC Press ISBN: 1351681621 Category : Science Languages : en Pages : 766
Book Description
This book provides a general survey of Geocryology, which is the study of frozen ground called permafrost. Frozen ground is the product of cold climates as well as a variety of environmental factors. Its major characteristic is the accumulation of large quantities of ice which may exceed 90% by volume. Soil water changing to ice results in ground heaving, while thawing of this ice produces ground subsidence often accompanied by soil flowage. Permafrost is very susceptible to changes in weather and climate as well as to changes in the microenvironment. Cold weather produces contraction of the ground, resulting in cracking of the soil as well as breakup of concrete, rock, etc. Thus permafrost regions have unique landforms and processes not found in warmer lands. The book is divided into three parts. Part 1 provides an introduction to the characteristics of permafrost. Four chapters deal with its definition and characteristics, the unique processes operating there, the factors affecting it, and its general distribution. Part 2 consists of seven chapters describing the characteristic landforms unique to these areas and the processes involved in their formation. Part 3 discusses the special problems encountered by engineers in construction projects including settlements, roads and railways, the oil and gas industry, mining, and the agricultural and forest industries. The three authors represent three countries and three language groups, and together have over 120 years of experience of working in permafrost areas throughout the world. The book contains over 300 illustrations and photographs, and includes an extensive bibliography in order to introduce the interested reader to the large current literature. Finalist of the 2019 PROSE Awards.
Author: L. J. Heidmann Publisher: ISBN: Category : Frost heaves Languages : en Pages : 8
Book Description
Study to identify frost-susceptible soils. By using variables of bulk density, sand content and calcium, equation was constructed which accounted for 83% of total variation in heaving.
Author: L. J. Heidmann Publisher: ISBN: Category : Frost heaving Languages : en Pages : 20
Book Description
Describes phenomenon. Suggested methods of control involve lowering freezing point of soil water or restricting water flow through soil to freezing front.
Author: Kaare Senneset Publisher: ISBN: Category : Engineering Languages : en Pages : 664
Book Description
Papers on climate change and geothermal regime, regional permafrost, physics and chemistry of frozen ground, frost heave mechanism, periglacial phenomena, geocryology, site investigations, subsea permafrost, geotechnical engineering and pipeline construction.
Author: C. W. Kaplar
Author: C. W. Kaplar
Author: C. W. Kaplar
Author: C. W. Kaplar
Author: Stuart A. Harris
Author: Lawrence S. Danyluk
Author: L. J. Heidmann
Author: L. J. Heidmann
Author: 
Author: Kaare Senneset
Author: Cold Regions Research and Engineering Laboratory (U.S.)