Analysis of the Influence of Incorporating Different Thermal-Insulating Materials into the Sub-Ballast Layers
Adverse climatic conditions, particularly excessive water and frost, necessitate the design of thick protective sub-ballast layers when dealing with frost-susceptible subgrade surfaces, especially when using standard natural materials (crushed aggregate or gravel–sand). Given the current preference...
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| Format: | Article |
| Language: | English |
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MDPI AG
2025-01-01
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| Series: | Buildings |
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| Online Access: | https://www.mdpi.com/2075-5309/15/2/239 |
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| author | Libor Ižvolt Peter Dobeš Martin Mečár Deividas Navikas |
| author_facet | Libor Ižvolt Peter Dobeš Martin Mečár Deividas Navikas |
| author_sort | Libor Ižvolt |
| collection | DOAJ |
| description | Adverse climatic conditions, particularly excessive water and frost, necessitate the design of thick protective sub-ballast layers when dealing with frost-susceptible subgrade surfaces, especially when using standard natural materials (crushed aggregate or gravel–sand). Given the current preference for conserving natural construction materials and promoting sustainable development in the dimensioning of sub-ballast layers, it is advisable to incorporate various thermal insulation, composite, or suitable recycled materials in their design. Therefore, the paper analyses the impact of incorporating different thermal insulation materials (including extruded polystyrene, Liapor, Liapor concrete, and composite foam concrete) into sub-ballast layers. As part of the experimental research, these modified sub-ballast layers were constructed on a real scale in the outdoor environment of the University of Žilina (UNIZA) campus. They were subsequently compared in terms of their thermal resistance to climatic loads. The research results demonstrate that extruded polystyrene provides the optimal thermal insulation effect in modified sub-ballast layers, which was subsequently used in the numerical modelling of railway track structure freezing under different climatic loads. |
| format | Article |
| id | doaj-art-52e4babb904444289ab7049ca0368928 |
| institution | Kabale University |
| issn | 2075-5309 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Buildings |
| spelling | doaj-art-52e4babb904444289ab7049ca03689282025-01-24T13:26:18ZengMDPI AGBuildings2075-53092025-01-0115223910.3390/buildings15020239Analysis of the Influence of Incorporating Different Thermal-Insulating Materials into the Sub-Ballast LayersLibor Ižvolt0Peter Dobeš1Martin Mečár2Deividas Navikas3Department of Railway Engineering and Track Management, University of Žilina, Univerzitná 8215/1, 010 26 Žilina, SlovakiaDepartment of Railway Engineering and Track Management, University of Žilina, Univerzitná 8215/1, 010 26 Žilina, SlovakiaDepartment of Railway Engineering and Track Management, University of Žilina, Univerzitná 8215/1, 010 26 Žilina, SlovakiaDepartment of Mobile Machinery and Railway Transport, Vilnius Gediminas Technical University, 10223 Vilnius, LithuaniaAdverse climatic conditions, particularly excessive water and frost, necessitate the design of thick protective sub-ballast layers when dealing with frost-susceptible subgrade surfaces, especially when using standard natural materials (crushed aggregate or gravel–sand). Given the current preference for conserving natural construction materials and promoting sustainable development in the dimensioning of sub-ballast layers, it is advisable to incorporate various thermal insulation, composite, or suitable recycled materials in their design. Therefore, the paper analyses the impact of incorporating different thermal insulation materials (including extruded polystyrene, Liapor, Liapor concrete, and composite foam concrete) into sub-ballast layers. As part of the experimental research, these modified sub-ballast layers were constructed on a real scale in the outdoor environment of the University of Žilina (UNIZA) campus. They were subsequently compared in terms of their thermal resistance to climatic loads. The research results demonstrate that extruded polystyrene provides the optimal thermal insulation effect in modified sub-ballast layers, which was subsequently used in the numerical modelling of railway track structure freezing under different climatic loads.https://www.mdpi.com/2075-5309/15/2/239railway tracksub-ballast layersclimatic conditionsthermal insulation materialsextruded polystyrenenumerical modelling |
| spellingShingle | Libor Ižvolt Peter Dobeš Martin Mečár Deividas Navikas Analysis of the Influence of Incorporating Different Thermal-Insulating Materials into the Sub-Ballast Layers Buildings railway track sub-ballast layers climatic conditions thermal insulation materials extruded polystyrene numerical modelling |
| title | Analysis of the Influence of Incorporating Different Thermal-Insulating Materials into the Sub-Ballast Layers |
| title_full | Analysis of the Influence of Incorporating Different Thermal-Insulating Materials into the Sub-Ballast Layers |
| title_fullStr | Analysis of the Influence of Incorporating Different Thermal-Insulating Materials into the Sub-Ballast Layers |
| title_full_unstemmed | Analysis of the Influence of Incorporating Different Thermal-Insulating Materials into the Sub-Ballast Layers |
| title_short | Analysis of the Influence of Incorporating Different Thermal-Insulating Materials into the Sub-Ballast Layers |
| title_sort | analysis of the influence of incorporating different thermal insulating materials into the sub ballast layers |
| topic | railway track sub-ballast layers climatic conditions thermal insulation materials extruded polystyrene numerical modelling |
| url | https://www.mdpi.com/2075-5309/15/2/239 |
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