Abstract
The tires used constitute an environmental problem that remains unsolved. It is observed that the automotive fleet and therefore the generation of tires increases year after year, so the recovery and reuse processes are insufficient. For several years, the reuse of tires as materials in the construction has been considered, and several techniques have been developed for the construction of retaining walls and road reinforcement. However, to date, their use remains sporadic. This article presents the theoretical and experimental evaluation of a new geotechnical reinforcement system from used tires. This system, suitable for the construction of containment structures and the reinforcement of roads, is characterized by the conformation of cells that do not require other elements apart from the tires and the filling material. A mathematical model was developed to describe the behavior of the system and pullout tests were carried out for validation. The tests were performed with different tire and compacted granular material with different energies. The results allow validating the theoretical model by showing an increase in pullout resistance with the density and number of tires in the arrangement. It is observed that the coincidence between the model and the tests improves as the stiffness of the soil increases, being the degree of compaction fundamental for the operation.
Highlights
The final disposal of waste tires is still an environmental problem due to their increasing production and recycling difficulties
As an alternative for the final disposal of tires in civil works, this study has proposed an innovative reusing strategy for the use of scrap tires as a geotechnical reinforcement system (RTS)
For campaign 2, in addition to the magnitude of the extraction force, a linear position transducer was used to measure the displacements of the arrangements considered according to Figure 3, which determined the force-displacement curves of the tire system
Summary
The final disposal of waste tires is still an environmental problem due to their increasing production and recycling difficulties. Colombia relies only on mechanical crushing to produce rubber granules, which currently have a limited and unstable demand, a fact that imposes the need to explore recycling technologies to further expanding the use options for recycled products from tire waste. This makes it necessary to search for applications that allow a massive use of used tires and as an alternative for the use in infrastructure construction. In recent studies [30], researchers discussed the benefits of reinforcing dikes and embankments with the whole tire by running a series of field-level pullout tests to investigate the behavior of waste tire extraction in cell-type arrangements on reinforced soil. For the purposes of the tests, a statistical sample of 60 tires was taken
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