Shear strength characteristics of mixing slag-stone ballast reinforcement with tire geo-scrap using large-scale direct shear tests
Abstract Utilizing the ballast layer with more durable and stable characteristics can help avoid significant expenses due to decreased maintenance efforts. Strengthening the ballast layer with different types of reinforcements or substituting the stone aggregates with the appropriate granular materi...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2024-09-01
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| Series: | Railway Engineering Science |
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| Online Access: | https://doi.org/10.1007/s40534-024-00356-2 |
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| author | Morteza Esmaeili Hamidreza Heydari Maziar Mokhtari Sara Darvishi |
| author_facet | Morteza Esmaeili Hamidreza Heydari Maziar Mokhtari Sara Darvishi |
| author_sort | Morteza Esmaeili |
| collection | DOAJ |
| description | Abstract Utilizing the ballast layer with more durable and stable characteristics can help avoid significant expenses due to decreased maintenance efforts. Strengthening the ballast layer with different types of reinforcements or substituting the stone aggregates with the appropriate granular materials could potentially help to achieve this goal by reducing the ballast deterioration. One of the exquisite and most effective solutions to eliminate these challenges is to use waste materials such as steel slag aggregates and useless tires. Utilizing these waste materials in the ballasted railway track will contribute to sustainable development, an eco-friendly system, and green infrastructure. So in a state-of-the-art insightful, the ballast aggregates, including a mixture of steel slag and stone aggregates, are reinforced with a novel kind of geo-grid made of waste tire strips known as geo-scraps. This laboratory research tried to explain the shear strength behavior of the introduced mixing slag-stone ballast reinforced with tire geo-scrap. To achieve this goal, a series of large-scale direct shear tests were performed on the ballast which is reinforced by tire geo-scrap and included various combinations of slag and stone aggregates. The concluded results indicate that the optimal mixing ratio is attained by a combination of 75% slag and 25% stone aggregates which is reinforced by tire geo-scrap at a placing level of 120 mm. In this case, the shear strength, internal friction angle, vertical displacement, and dilatancy angle of stone–slag ballast reinforced with geo-scraps exhibited average changes of + 28%, + 9%, − 28%, and − 15%, respectively. |
| format | Article |
| id | doaj-art-f3aba1f0ce0f4bdc9f4cfbb18960c6dc |
| institution | Kabale University |
| issn | 2662-4745 2662-4753 |
| language | English |
| publishDate | 2024-09-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Railway Engineering Science |
| spelling | doaj-art-f3aba1f0ce0f4bdc9f4cfbb18960c6dc2025-01-19T12:08:53ZengSpringerOpenRailway Engineering Science2662-47452662-47532024-09-013319410710.1007/s40534-024-00356-2Shear strength characteristics of mixing slag-stone ballast reinforcement with tire geo-scrap using large-scale direct shear testsMorteza Esmaeili0Hamidreza Heydari1Maziar Mokhtari2Sara Darvishi3School of Railway Engineering, Iran University of Science and TechnologySchool of Railway Engineering, Iran University of Science and TechnologySchool of Railway Engineering, Iran University of Science and TechnologySchool of Railway Engineering, Iran University of Science and TechnologyAbstract Utilizing the ballast layer with more durable and stable characteristics can help avoid significant expenses due to decreased maintenance efforts. Strengthening the ballast layer with different types of reinforcements or substituting the stone aggregates with the appropriate granular materials could potentially help to achieve this goal by reducing the ballast deterioration. One of the exquisite and most effective solutions to eliminate these challenges is to use waste materials such as steel slag aggregates and useless tires. Utilizing these waste materials in the ballasted railway track will contribute to sustainable development, an eco-friendly system, and green infrastructure. So in a state-of-the-art insightful, the ballast aggregates, including a mixture of steel slag and stone aggregates, are reinforced with a novel kind of geo-grid made of waste tire strips known as geo-scraps. This laboratory research tried to explain the shear strength behavior of the introduced mixing slag-stone ballast reinforced with tire geo-scrap. To achieve this goal, a series of large-scale direct shear tests were performed on the ballast which is reinforced by tire geo-scrap and included various combinations of slag and stone aggregates. The concluded results indicate that the optimal mixing ratio is attained by a combination of 75% slag and 25% stone aggregates which is reinforced by tire geo-scrap at a placing level of 120 mm. In this case, the shear strength, internal friction angle, vertical displacement, and dilatancy angle of stone–slag ballast reinforced with geo-scraps exhibited average changes of + 28%, + 9%, − 28%, and − 15%, respectively.https://doi.org/10.1007/s40534-024-00356-2Ballast deteriorationBallast stabilizationSteel slag aggregatesLarge-scale direct shear testWaste tire geo-scrap |
| spellingShingle | Morteza Esmaeili Hamidreza Heydari Maziar Mokhtari Sara Darvishi Shear strength characteristics of mixing slag-stone ballast reinforcement with tire geo-scrap using large-scale direct shear tests Railway Engineering Science Ballast deterioration Ballast stabilization Steel slag aggregates Large-scale direct shear test Waste tire geo-scrap |
| title | Shear strength characteristics of mixing slag-stone ballast reinforcement with tire geo-scrap using large-scale direct shear tests |
| title_full | Shear strength characteristics of mixing slag-stone ballast reinforcement with tire geo-scrap using large-scale direct shear tests |
| title_fullStr | Shear strength characteristics of mixing slag-stone ballast reinforcement with tire geo-scrap using large-scale direct shear tests |
| title_full_unstemmed | Shear strength characteristics of mixing slag-stone ballast reinforcement with tire geo-scrap using large-scale direct shear tests |
| title_short | Shear strength characteristics of mixing slag-stone ballast reinforcement with tire geo-scrap using large-scale direct shear tests |
| title_sort | shear strength characteristics of mixing slag stone ballast reinforcement with tire geo scrap using large scale direct shear tests |
| topic | Ballast deterioration Ballast stabilization Steel slag aggregates Large-scale direct shear test Waste tire geo-scrap |
| url | https://doi.org/10.1007/s40534-024-00356-2 |
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