Author(s): Aleksey Marchenko; Nicolai Vasiliev; Artem Nesterov; Yuri Kondrashov; Aleksandr Alhimenko
Linked Author(s):
Keywords: Thermal expansion; Frozen soil; Ice; Sand; Clay; Fiber-optic sensors
Abstract: Phase transformations of ice in seasonally frozen soils are an inalienable part of the Earth's cryosphere and affect the balance of the external heat of our planet. These processes depend on natural and technogenic changes in the environment. That is why for the design of engineering structures, built in the Arctic world regions, it is necessary to have a complete conception for the formation mechanism of the stress-strain state of such soils in a wide range of thermal loads. The study of the nonstationarity of ice, as an important component of considered medium, is an actual problem. New method for measuring the temperature deformations of frozen soils using fiber-optic Bragg grating sensors can serve as a solution. In the course of the experiments, cylindrical samples of previously frozen soils saturated with water of different salinity were tested.
Year: 2018