A new sustainable geotechnical reinforcement system from old tires: Experimental evaluation by pullout tests

César Augusto Hidalgo, Juan José Bustamante-Hernández

Research output: Contribution to journalArticle

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.

Original languageEnglish
Article number4582
JournalSustainability (Switzerland)
Volume12
Issue number11
DOIs
StatePublished - 1 Jun 2020

Keywords

  • Experimental
  • Pullout resistance
  • Soil reinforcement
  • Used tires

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