Verwendung von Altreifen in der Geotechnik
Research output: Thesis › Master's Thesis
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Abstract
Due to the increasing demand for natural resources, the mining operations and in connection therewith, the number of large equipment in operation, needed for loading and transporting them, increases. The adverse operating conditions and the rough surface cause a high degree of wear of the equipment tires. Due to the fact that Earth Mover - tires are of relatively large diameter and stable, this study looks for potentials to reuse worn out Earth Mover tires as a whole. A great potential for the reuse of worn out tires is the attachment of geosynthetic reinforced embankments and retaining structures. This thesis first deals with the evaluation of material and strength parameters for fill and backfill materials, geogrid and tires. In addition, the friction parameters for empty and filled tires from experiments are determined. In the next step, the various guidelines and standards are presented for the design of geosynthetic reinforced composite systems. A distinction is made between external and internal security. The design is first carried out on unreinforced tire layers. Afterwards a tensile reinforcement is used and according to standards, the required proof of stability is performed. A possible application of this construction method is the access ramp to the ‘Zentrum am Berg’ in Eisenerz. The ramp has a total length of approximately 380m. For about 280m of this length a support structure with a height up to 8.4 m is necessary. A stability analysis and the selection of the geosynthetic reinforcement are performed for a representative problematic cross-section. Finally, the required amount of geogrid and their cost as well as the amount and cost for explosives, loading and transportation of the excavated material are determined.
Details
Translated title of the contribution | Usage of worn out tires in the field of geotechnique |
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Original language | German |
Qualification | Dipl.-Ing. |
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Award date | 29 Jun 2012 |
Publication status | Published - 2012 |