The Development of the Method and Determination of the Relative Abrasiveness of Bulk Substances

This article touches upon the preliminary results of determining the coefficient of relative abrasiveness of various bulk materials. An experimental setup for determining the abrasiveness of various bulk materials is described, which makes it possible to set the abrasiveness of a material with different physical properties and fractions of the frayed material.It is noted that during experiments it is necessary to ensure the stability of fractions. It is scheduled to determine the critical speed of movement of bulk solids, which eliminates the change in fraction size through grinding when the test material is abraded by samples. It is emphasized that the abrasiveness of the test material is determined on the material recognized as a reference.

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Investigation of the Influence of the Physical Properties of Landfill Soils on the Stability of Slopes in the Context of Solving Civil Security Problems

Materials Science Forum ◽

10.4028/www.scientific.net/msf.1038.407 ◽

2021 ◽

Vol 1038 ◽

pp. 407-416

Author(s):

Nina Rashkevich ◽

Roman Shevchenko ◽

Ihor Khmyrov ◽

Alexandr Soshinskiy

Keyword(s):

Physical Properties ◽

Gradual Increase ◽

Laboratory Studies ◽

Domestic Waste ◽

Solid Domestic Waste ◽

Angle Of Internal Friction ◽

Stability Of Slopes ◽

The Stability ◽

The Mathematical Model

The paper presents the results of laboratory studies of the influence of the physical properties of landfill soils on the stability of slopes, namely, the determination of mechanical properties – the angle of internal friction, specific adhesion, and the shear angle of experimental landslide blocks under conditions of different humidity, density and temperature; determination of physical properties – humidity, temperature and density on the fact of shear of the experimental blocks, taking into account the gradual increase in humidity. The results of laboratory tests are processed using the classical statistical method. This made it possible to confirm the reliability of the mathematical model, which includes the solution of individual tasks for assessing the physical properties of landfill soils, and the corresponding methodology developed on its basis for preventing emergencies associated with shear of landfill soils at potentially hazardous burial sites for solid domestic waste.

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