Abstract
The problem of rapid drying arises when determining moisture, ash and organic matter content, as well as during many other soil tests. For highly-organic and organo-mineral peat soils the problem of advanced measurement of moisture content is of special importance, since after reweighing the dry sample increase in mass may be observed. The article examines the methods in determining the moisture content in peat and organic soils via microwave radiation, which will greatly speed up the process, simplify the complexity and cost of laboratory tests. The paper presents a detailed review of the methods determining moisture content in soils and characteristics, as well as application scope. The work contains the research results on moisture organic soils: drying in a microwave oven and the current domestic standards.
Highlights
The problem of rapid soil drying arises when determining moisture, ash and organic content as well as many other types of soil tests
The article examines the methods in determining the moisture content in peat and organic soils via microwave radiation, which will greatly speed up the process, simplify the complexity and cost of laboratory tests
The research objectives include: an overview of foreign and domestic scientific works on the testing techniques of moisture content in soils; sampling and laboratory tests to classify the indicators of composition and physical properties of peats and peat soils; measurement and comparison of their moisture by microwave and convection drying; measurement of organic matter loss after drying; development of brief instructions in using of microwave ovens for rapid drying of organic soils
Summary
The problem of rapid soil drying arises when determining moisture, ash and organic content as well as many other types of soil tests. For organic and organo-mineral peat soils, advanced moisture determination is of particular importance, since reweighing demonstrates the sample mass increase. Due to this fact, it is required to determine the smallest mass which is relevant to GOST 5180 [4]. The aim of this work is to study drying process in microwave ovens to determine the moisture content of organic and organo-mineral soils. The research objectives include: an overview of foreign and domestic scientific works on the testing techniques of moisture content in soils; sampling and laboratory tests to classify the indicators of composition and physical properties of peats and peat soils; measurement and comparison of their moisture by microwave and convection drying; measurement of organic matter loss after drying; development of brief instructions in using of microwave ovens for rapid drying of organic soils
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