Please use this identifier to cite or link to this item: http://eadnurt.diit.edu.ua/jspui/handle/123456789/13322
Title: Devising a Procedure for Assessing the Subgrade Compaction Degree Based on the Propagation Rate of Elastic Waves
Authors: Kovalchuk, Vitalii V.
Kravets, Ivan B.
Nabochenko, Olga S.
Onyshchenko, Arthur
Fedorenko, Olexander
Pentsak, Andriy
Petrenko, Oleksiy V.
Hembara, Nataliya
Keywords: subgrade
impact's elastic wave
inertial study
wave propagation rate
density
КРС (ЛФ)
КМТ
Issue Date: 2021
Publisher: РС Тесhnology Сеntеr, Kharkiv, Ukraine
Citation: Kovalchuk V., Kravets I., Nabochenko О., Onyshchenko A., Fedorenko O., Pentsak A., Petrenko O., Gembara N. Devising a Procedure for Assessing the Subgrade Compaction Degree Based on the Propagation Rate of Elastic Waves. Eastern-European Journal of Enterprise Technologies. 2021. Vol. 1, Iss. 5 (109). P. 6–15. DOI: 10.15587/1729-4061.2021.225520.
Abstract: EN: This paper reports the analysis of the methods for estimating the technical condition of the subgrade underneath a constructed railroad track or road during its operation. The study results have proven that the issue related to monitoring and controlling high-quality compac-tion of a heterogeneous subgrade remains relevant and requires the construction of reliable experi-mental methods for assessing the subgrade degree of compaction.A procedure for determining the compaction of subgrade in the laboratory has been devised, based on inertial microcomputer technologies, which makes it pos-sible to assess the degree of com-paction of subgrade soils depend-ing on the propagation rate of an impact's elastic waves.An experimental study has been performed into the propaga-tion rate of elastic waves across a homogeneous subgrade made of coarse-grained sand and a hetero-geneous subgrade made of coarse sand with a layer of clay in the middle of the prism. The study results established that the propa-gation rate of an elastic wave in a heterogeneous subgrade accepts a lower value than the rate of wave propagation in a homogeneous subgrade.Through the dynamic inter-pretation, by using a discriminant statistical analysis, the character-istic features have been defined in the distribution of accelerations in the body of the homogeneous and heterogeneous subgrade, depend-ing on the degree of compaction, which would make it possible to monitor the state of the subgrade during operation. As the degree of the subgrade soil compaction affects the technical condition of roads.
Description: V. Kovalchuk: ORCID 0000-0003-4350-1756; I. Kravets: ORCID 0000-0002-2239-849X; О. Nabochenko: ORCID 0000-0001-6048-2556; A. Onyshchenko: ORCID 0000-0002-1040-4530; O. Fedorenko: ORCID 0000-0002-3464-597X; A. Pentsak: ORCID 0000-0001-7491-6730; O. Petrenko: ORCID 0000-0002-8870-8534; N. Gembara: ORCID 0000-0003-0710-8615
URI: http://eadnurt.diit.edu.ua/jspui/handle/123456789/13322
http://journals.uran.ua/eejet/article/view/225520
http://journals.uran.ua/eejet/article/view/225520/225584
ISSN: 1729-3774(print)
1729-4061(on-line)
Other Identifiers: DOI: 10.15587/1729-4061.2021.225520
Appears in Collections:Статті КМТ
Статті КРС (ЛФ)

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