Use of Granulated Rubber Tyre Waste as Lightweight Backfill Material for Retaining Walls
| Autor: | Cristina Soriano-Cuesta, Emilio J. Mascort-Albea, Elizabeth Contreras-Marín, María Anguita-García, Antonio Jaramillo-Morilla, Rocío Romero-Hernández, Elia Mercedes Alonso-Guzmán |
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| Přispěvatelé: | Universidad de Sevilla. Departamento de Estructuras de Edificación e Ingeniería del Terreno, TEP018: Ingeniería del Terreno |
| Rok vydání: | 2021 |
| Předmět: |
Technology
Materials science End-of-life tyres (ELTs) QH301-705.5 QC1-999 0211 other engineering and technologies Compaction Mechanical properties 02 engineering and technology engineering.material mechanical properties Natural rubber Filler (materials) end-of-life tyres (ELTs) 021105 building & construction Cohesion (geology) Shear strength General Materials Science Geotechnical engineering Biology (General) Instrumentation QD1-999 Ecomaterials and ecoproducts ecomaterials and ecoproducts 021101 geological & geomatics engineering Fluid Flow and Transfer Processes Process Chemistry and Technology Physics General Engineering sustainability Engineering (General). Civil engineering (General) Computer Science Applications Chemistry Sustainability visual_art Compressibility visual_art.visual_art_medium engineering Particle size TA1-2040 Material properties |
| Zdroj: | idUS: Depósito de Investigación de la Universidad de Sevilla Universidad de Sevilla (US) Applied Sciences, Vol 11, Iss 6159, p 6159 (2021) Applied Sciences Volume 11 Issue 13 idUS. Depósito de Investigación de la Universidad de Sevilla instname |
| Popis: | The use of industrial waste in civil engineering applications constitutes a potential innovative effort to reduce environmental degradation and enable a sustainable use of natural resources. This paper reports a comprehensive laboratory study that was performed to evaluate the rubber granulates from End-of-Life Tyres (ELTs) as a lightweight backfill material in retaining walls. Various tests have been performed to provide specific information on the mechanical and physical properties of a detailed range of particle sizes smaller than 12 mm, with six different particle size distributions (S1: 0.0–0.8 mm/S2: 0.6–2.0 mm/S3: 2.0–4.0 mm/S4: 2.0–7.0 mm/S5: 90% 2.0–7.0 mm + 10% 0.6–2.0 mm/S6: 50% 2.0–7.0 mm + 50% 0.6–2.0 mm). The density and unit weight, compaction energy, compressibility, shear strength, and deformability have been evaluated to determine their performance. As a main conclusion, the research confirms that rubber granulates from ELTs possess great potential as backfill material behind retaining walls. The characteristic values of the geotechnical parameters have been estimated according to Eurocode 7. The friction angle results range from 18.27 to 23.21 degrees, and the cohesion results are wide-ranging, with values from 9.35 to 17.83 kPa. For this reason, two cantilever L-shaped retaining walls, selected as representative case studies, have been tested with these sample properties. The results of the geotechnical verifications are presented together with a comparison of the safety factors in accordance with the Spanish standard design (CTE-DB-SE-C) and the European (EC7-1) regulations. The calculations indicate that the overdesign factors (ODF) achieved in the verifications using the material properties of the S4, S5, and S6 combination improve the calculation results obtained if a conventional filler material such as sand is considered. |
| Databáze: | OpenAIRE |
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