Abstract
The article deals with the techniques of soil water content determination using microwave radiation. Its practical application would allow solving the problems of resource efficiency in geotechnical survey due to reduction of energy and resource intensity of laboratory analysis as well as its acceleration by means of decreasing labour intensity and, as a result, cost reduction. The article presents a detail analysis of approaches to soil water content determination and soil drying, considers its features and application. The study in soil of different composition, typical for Western Siberia including organic and organic-mineral ones, is a peculiarity of the given article, which makes it rather topical. The article compares and analyzes the results of the investigation into soil water content, which are obtained via conventional techniques and the original one developed by the authors, consisting in microwave drying. The authors also give recommendation on microwave technique application to dry soil.
Highlights
When developing modern economy the most urgent task is to increase the resource efficiency in all branches of industry
Household microwave ovens are widely used to dry soil, which reduces the time of soil water content determination, test and facility cost
A comparative analysis of water content determination of clay and organic soils in microwave and drying ovens is of particular interest
Summary
When developing modern economy the most urgent task is to increase the resource efficiency in all branches of industry. One of the main trends in solving this problem is time reduction of soil tests and increase in field and laboratory work efficiency due to rapid dry of disperse soils when determining water content, preparing samples for grading test, water permeability test, natural slope angle determination, solid particles density and other tests. A comparative analysis of water content determination of clay and organic soils in microwave and drying ovens is of particular interest. The tasks include: review of domestic and foreign literature dealing with methods of soil water content tests; identification and description of specific features of clay and organic soil drying, laboratory test to determine the identification indicators of soil composition and physical properties, determination and comparison of their water content when drying in microwave and convection ovens, developing brief recommendations on using microwave oven to dry finely dispersed soils rapidly
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