Results 181 to 190 of about 6,675,201 (223)
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The development of frost heave testing equipment
Matériaux et Constructions, 1973The paper presents details of the development of a deep freeze cabinet and of a cold room for carrying out the Road Research Laboratory frost heave test and the results obtained in the two testing facilities are compared. The majority of the tests reported were undertaken on burnt and on unburnt colliery shale, both in their natural state and when ...
R. J. Kettle, R. I. T. Williams
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FIELD TESTS ON FROST HEAVING CHARACTERISTICS OF GROUND
Doboku Gakkai Ronbunshu, 1991地下水位を1mと0.5mに制御した屋外凍上実験土槽を用いて, 冬期間における凍上量および直径15cmの円板に加わる凍上力の測定を行った. 得られた結果の主なものは次のとおりである. (1) 両土槽の地表面凍上量には明らかな違いが認められ, その違いは主として地表面にごく近い層 (深さ0~5cm) での凍上で現れる. (2) 凍結深さがある程度以上になると発生凍上量は比較的小さくなるが, 円板に加わる凍上力は非常に大きくなる.
Teruyuki SUZUKI +2 more
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TESTING SOILS TO PREDICT THEIR SUSCEPTIBILITY TO FROST HEAVING OF ALFALFA
Canadian Journal of Plant Science, 1973not available
E. A. GRANT, G. R. SAINI
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Aspects on the laboratory frost heave testing procedure
2011In this paper, some general features of freezing behaviour of frost susceptible soils are presented and discussed to improve the compatibility between field and laboratory characteristics. As an engineering approach, a theory for establishing frost-heave parameters is a modified segregation potential theory.
Gustavsson, H., Saarelainen, S.
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The Test Analysis on Frost Heave Characteristics of Carbonated Saline Soil
Applied Mechanics and Materials, 2012In order to study the frost heave characteristics of the carbonated saline soil, we have selected the carbonated saline soil sample of Da-An area in western Jilin province as the research object and analyzed the influence to the frost heave rate caused by the temperature, water content, compaction degree of soil sample, salt content, etc by indoor ...
Wen Hua Wang, Wen Ding Zhao, Zhang Wang
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Modified porosity rate frost heave model and tests verification
SPIE Proceedings, 2008To avoid the complexity of modeling frost heave from microscope, porosity rate function has been used in predication of frost heave phenomenon. The approach explored in this paper is based on frost heave tests and the concept of the segregated potential which has been widely accepted by researchers in order to find the proper form of the porosity rate ...
Zhi-qiang Ji, Xue-yan Xu
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Improvements in Frost Heave Laboratory Testing of Fine-Grained Soils
Journal of Cold Regions Engineering, 2008We present a laboratory system designed for studying frost heave in fine-grained soil. The system consists of: a modified refrigerator, a frost heave test cell, a laser for measuring heave, a differential pressure transducer for measuring water intake, and platinum resistance temperature detectors for measuring pedestal temperatures.
Margaret M. Darrow +3 more
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Application of PIV Technique in Model Test of Frost Heave of Unsaturated Soil
Journal of Cold Regions Engineering, 2020Abstract Frost heave of soil is a highly nonuniform problem, in which the local deformation is much more severe and meaningful compared with the overall deformation.
Meng Wang +4 more
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Research on Hydraulic Soil Slope Frost Heaving Damage Model Test
Applied Mechanics and Materials, 2012Frost heaving damage of water conservancy project is widespread. In order to research the failure problems of hydraulic soil slope in dark seasonal frozen soil region, laboratory model test is carried out combined with field test section practical situation, which is the prototype of this model test.
Hua Zhong, Xiu Fen Wang, Bin Zhang
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Simple frost heave testing method using a temperature-controllable cell
Cold Regions Science and Technology, 2019Abstract The characteristics of frost heave have been evaluated with experimental results based on individual testing apparatus and methods even though frost heave testing methods have already been standardized in Japan and the U.S., such as through JGS 0172 and ASTM 5918.
Hyun Woo Jin +3 more
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