DEFINITIVE PROPERTIES OF GROUND-POLYMER COMPOSITE: METHOD OF EXPERIMENTAL RESEARCH
Journal Title: Збірник наукових праць Українського державного університету залізничного транспорту - Year 2018, Vol 182, Issue 16
Abstract
The original method of studying the deformation features of the ground-polymer composite formed as a result of injection into the clayey soil of the polyurethane material SPT® has been developed. According to this method, the soil is placed in a power cylindrical container, sealed, closed by a power cover, and injected into it by the SPT® material through the injection tube. The amount of material for injection is determined by the volume of the model and the shape. Injection should be performed at 2 points along the height of the model for dynamic tests (high model) and at 1 point for static tests. A soil with characteristics close to the soils, which were identified in the bases of emergency transport facilities, was selected as a soil for testing. After polymerization of the material, the soil-polymer composite is subjected to static and dynamic tests directly in the container. During static tests, the magnitude of the load and the corresponding readings of the deformations of the soil-polymer composite were fixed. In dynamic tests, the load was constant, and the number of load cycles and the amount of deformation were recorded. As a result of the tests, the dependences of the relative deformation of the composite on the voltage (from the static load) and on the number of cycles of the determined dynamic load are obtained and the deformation module (static) in MPa is determined and the module proposed by the authors of the vibration deformation in the dimension "number of cycles" is determined. In addition to the deformation properties of the composite, it is proposed to determine the weight loss of the composite samples from the number of drying and humidification cycles and to compare it with the loss of mass of similar materials with known durability, to determine its durability. For research on durability, samples were cut out from a primer-polymer composite and subjected to alternate moistening and drying, with fixation of the change in the mass of the sample both in the moistened state and in the dried one. Studies are carried out for different soil moisture indicators before and after fastening, and for different values of the relative amount of polymer in the soil (the cost of a polymer per unit volume of soil).
Authors and Affiliations
Andriy Plugin, Sergsii Miroshnichenko, Alina Zvierieva, Ivan Reznichenko
Keywords
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- EP ID EP536257
- DOI 10.18664/1994-7852.182.2018.159929
- Views 54
- Downloads 0
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