Keywords: fortification

CREATING GROUND CONCRETE AND STRENGTHENING SUBSTRATES USING MINING WASTE

https://doi.org/10.58224/2618-7183-2022-5-3-35-44
Abstract
The study examines the theoretical aspects of the structure formation of reinforced cohesive soils. The analysis of the most promising methods of chemical strengthening of soils with mining waste has been carried out. The paper provides information on the selection of the composition of a complex binder based on lime-clay soil. The relevance of the study is due to the fact that the construction industry needs areas suitable for development. This paper describes the methods of mineralogical and chemical analysis, X-ray diffraction analysis, electron microscopic examination and fluorescence analysis, and also shows a new technology for strengthening clay soils with lime, simplified compared to the mechanical activation method. In the course of the research, it was possible to determine the optimal composition of soil concrete. This work also confirms the possibility of using these compounds in 3D technology in construction.
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STUDY OF PHYSICAL AND MECHANICAL CHARACTERISTICS OF VARIOUS TYPES OF SOIL STRENGTHENED BY CLINKER WASTE

https://doi.org/10.34031/2618-7183-2018-1-3-43-50
Abstract
The specificity of the construction of roads is the use of a huge amount of various stone materials - sand, gravel, etc. To reduce the cost of road pavements, it is possible to replace stone materials with local soils. Such materials do not need to be transported by road or rail. It is known that most soils cannot be used in the construction of the road bed (sandy loam and loam are light dusty and heavy dusty, clay dusty and oily), as their use leads to the appearance of various deformations of the upper layers of road pavement. This problem can be solved by strengthening the soil with various types of binders, in particular, clinker waste. When conducting experimental studies to assess the effectiveness of the use of waste clinker production to strengthen the soil the following compositions without using: soil and 9% waste; soil and 18% waste; soil and 27% waste were investigated. As a result of the research, the main dependences of the changes in the physical and mechanical parameters of the soil concrete on the amount of waste clinker production introduced into the composition of various types of soils were identified. It was found that the use of waste clinker production to strengthen the loam allowed to obtain a reinforced soil brand M20. Strengthening sand with clinker production without the addition of cement is not practical, as the samples do not gain even minimal strength for 180 days, which allows them to be classified by brand, in addition, such samples have extremely low resistance.
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