โ Scribed by L.I. Finborud; A.-L. Berggren
No coin nor oath required. For personal study only.
This paper gives a brief account of the results of a series of oedometer tests and triaxial creep tests on frozen soils.
The oedometer tests are performed on artificially frozen sand, silt and clay. The tests also include ice as a reference material. The results are given by parameters describing the tangent deformation modulus and the time resistance against creep.
The triaxial creep tests are carried out on the artificially frozen clay, and on a permafrost clay from Spitsbergen. The data are interpreted in accordance with Hult's theory. The artificially frozen clay shows much higher creep resistance than the permafrost clay.
In addition to deformation moduli and creep parameters the routine data of the materials tested are also included.
๐ SIMILAR VOLUMES
Consideration of the creep characteristics of frozen soil is required when it is used for the construction of retaining walls. It is generally accepted that there are three kinds of frozen soils, i.e., frozen soil without ice lenses, frozen soil with layers of ice lenses and frozen soil with needle-
The paper introduces structural pressure values as separation "points" between elastic and plastic states of any soil (including collapsible soils) subjected to loading. Collapsibility of soils is identified as a non-elastic deformation. The collapse of soils starts when the applied stress exceeds s
Tsytovich, N.A. and Kronik, Ya.A., 1979 . Interrelationship of the principal physicomechanical and thermophysical properties of coarse-grained frozen soils. Eng. Geol., 13: 163--167. The results of physical, mechanical and thermomechanical investigations of frozen coarse-grained soils with sandy c