The Influence of Compaction and Water Conditions on Shear Strength and Friction Resistance between Geotextiles and Ash-Slag Mixture
The paper presents the results of tests of the shear strength of the ash−slag mixture taken from the landfill located in Kraków (Poland) and the interfacial friction resistance at the contact between the ash−slag mixture and woven or nonwoven geotextiles. The tests were...
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| Format: | Article |
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MDPI AG
2020-03-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/13/5/1086 |
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| author | Andrzej Gruchot Tymoteusz Zydroń Agata Michalska |
| author_facet | Andrzej Gruchot Tymoteusz Zydroń Agata Michalska |
| author_sort | Andrzej Gruchot |
| collection | DOAJ |
| description | The paper presents the results of tests of the shear strength of the ash−slag mixture taken from the landfill located in Kraków (Poland) and the interfacial friction resistance at the contact between the ash−slag mixture and woven or nonwoven geotextiles. The tests were carried out in a direct shear apparatus on samples with and without water saturation. The samples for testing were formed in the apparatus box at the optimum moisture by compacting them to <i>I<sub>S</sub></i> = 0.90 and 1.00. The test results reveal that the shear strength parameters of the ash-slag mixture were large. It was stated the significant influence of the compaction, the growth of which has resulted in an increase in the angle of internal friction (from 7% to 9%) and cohesion (from 60% to 97%). Whereas the saturation of the samples reduced the shear strength parameters (from 4% to 6%, of the internal friction angle and 30% to 43% of cohesion). The values of the interfacial friction resistance at the contact between the ash−slag mixture and the geotextiles were large as well, but slightly smaller than the values of the shear strength parameters of the mixture itself. The compaction caused an increase in the angle of interfacial friction (from 1% to 5%) and adhesion (from 31% to 127%). The water-saturation of the samples caused a change in the angle of interfacial friction (from −6% to 3%) and decline in the adhesion (from 22% to 69%). Values of the interaction coefficient were about 0.8−1.0 and they tended to rise with increasing the normal stress. Higher values of this parameter were obtained in tests with water saturation and for non-woven geotextiles. |
| first_indexed | 2024-04-13T06:38:06Z |
| format | Article |
| id | doaj.art-0e8c17316c0e4b958f35a805c64b05c2 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-13T06:38:06Z |
| publishDate | 2020-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-0e8c17316c0e4b958f35a805c64b05c22022-12-22T02:57:50ZengMDPI AGEnergies1996-10732020-03-01135108610.3390/en13051086en13051086The Influence of Compaction and Water Conditions on Shear Strength and Friction Resistance between Geotextiles and Ash-Slag MixtureAndrzej Gruchot0Tymoteusz Zydroń1Agata Michalska2Department of Hydraulic Engineering and Geotechnics, University of Agriculture in Kraków, al. Mickiewicza 24/28, 30-059 Kraków, PolandDepartment of Hydraulic Engineering and Geotechnics, University of Agriculture in Kraków, al. Mickiewicza 24/28, 30-059 Kraków, PolandArcadis Sp. z o.o., ul. Wadowicka 8A, 30-415 Kraków, PolandThe paper presents the results of tests of the shear strength of the ash−slag mixture taken from the landfill located in Kraków (Poland) and the interfacial friction resistance at the contact between the ash−slag mixture and woven or nonwoven geotextiles. The tests were carried out in a direct shear apparatus on samples with and without water saturation. The samples for testing were formed in the apparatus box at the optimum moisture by compacting them to <i>I<sub>S</sub></i> = 0.90 and 1.00. The test results reveal that the shear strength parameters of the ash-slag mixture were large. It was stated the significant influence of the compaction, the growth of which has resulted in an increase in the angle of internal friction (from 7% to 9%) and cohesion (from 60% to 97%). Whereas the saturation of the samples reduced the shear strength parameters (from 4% to 6%, of the internal friction angle and 30% to 43% of cohesion). The values of the interfacial friction resistance at the contact between the ash−slag mixture and the geotextiles were large as well, but slightly smaller than the values of the shear strength parameters of the mixture itself. The compaction caused an increase in the angle of interfacial friction (from 1% to 5%) and adhesion (from 31% to 127%). The water-saturation of the samples caused a change in the angle of interfacial friction (from −6% to 3%) and decline in the adhesion (from 22% to 69%). Values of the interaction coefficient were about 0.8−1.0 and they tended to rise with increasing the normal stress. Higher values of this parameter were obtained in tests with water saturation and for non-woven geotextiles.https://www.mdpi.com/1996-1073/13/5/1086ash–slag mixturenonwoven and woven geotextileshear strengthinterfacial friction resistance |
| spellingShingle | Andrzej Gruchot Tymoteusz Zydroń Agata Michalska The Influence of Compaction and Water Conditions on Shear Strength and Friction Resistance between Geotextiles and Ash-Slag Mixture Energies ash–slag mixture nonwoven and woven geotextile shear strength interfacial friction resistance |
| title | The Influence of Compaction and Water Conditions on Shear Strength and Friction Resistance between Geotextiles and Ash-Slag Mixture |
| title_full | The Influence of Compaction and Water Conditions on Shear Strength and Friction Resistance between Geotextiles and Ash-Slag Mixture |
| title_fullStr | The Influence of Compaction and Water Conditions on Shear Strength and Friction Resistance between Geotextiles and Ash-Slag Mixture |
| title_full_unstemmed | The Influence of Compaction and Water Conditions on Shear Strength and Friction Resistance between Geotextiles and Ash-Slag Mixture |
| title_short | The Influence of Compaction and Water Conditions on Shear Strength and Friction Resistance between Geotextiles and Ash-Slag Mixture |
| title_sort | influence of compaction and water conditions on shear strength and friction resistance between geotextiles and ash slag mixture |
| topic | ash–slag mixture nonwoven and woven geotextile shear strength interfacial friction resistance |
| url | https://www.mdpi.com/1996-1073/13/5/1086 |
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