Results 191 to 200 of about 906 (240)

Development of a Frost-Heave Testing Apparatus with a Triple Cell

International Journal of Civil Engineering, 2021
In this study, the first frost-heave testing apparatus with a triple cell was developed that can measure the amount of frost-heave and heaving pressure, as well as achieve high-accuracy temperature control. The performance of the apparatus was validated by a series of frost-heave tests, which were conducted in a closed system with saturated sandy soil ...
Kean Thai Chhun, Kyoung-Jea Jun, Chan-Young Yune   +2 more
openaire   +1 more source

Test Methods for Frost Heave and Thaw Weakening Susceptibility of Soils

, 2008
D18 Committee
  +6 more sources

Aspects on the laboratory frost heave testing procedure

, 2011
In 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.
Seppo Saarelainen, Henry Gustavsson, Ono T.   +2 more
openalex   +4 more sources

Tests of the Concept of Secondary Frost Heaving

Soil Science Society of America Journal, 1975
Abstract Heaving tests were conducted with 2–4, 4–8, and 8–16 µm soil fractions in special apparatus in which sliding friction (during heaving) was eliminated by confining the specimen as in standard triaxial test apparatus. Maximum pressures developed by heaving exceeded those computed by a primary heaving model (
J. P. G. Loch, R. D. Miller
openaire   +1 more source

The development of frost heave testing equipment

Matériaux et Constructions, 1973
The 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
openaire   +1 more source

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, Seigo SAWADA, Takayosi ONAKA   +2 more
openaire   +1 more source

TESTING SOILS TO PREDICT THEIR SUSCEPTIBILITY TO FROST HEAVING OF ALFALFA

Canadian Journal of Plant Science, 1973
not available
E. A. GRANT, G. R. SAINI
openaire   +1 more source

Modified porosity rate frost heave model and tests verification

SPIE Proceedings, 2008
To 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
openaire   +1 more source

Application of PIV Technique in Model Test of Frost Heave of Unsaturated Soil

Journal of Cold Regions Engineering, 2020
Abstract 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, Xu Li, Zhenya Liu, Jiankun Liu, Dan Chang   +4 more
openaire   +1 more source

Improvements in Frost Heave Laboratory Testing of Fine-Grained Soils

Journal of Cold Regions Engineering, 2008
We 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, Scott L. Huang, Yuri Shur, Satoshi Akagawa   +3 more
openaire   +1 more source