Saltar al contenido
República del Perú · Observatorio de la producción científica universitaria
OApol.org Observatorio de Inteligencia Científica Universitaria del Perú
OApol.org
Inicio Universidades Publicaciones Investigadores
Repositorios
Tesis y trabajos académicosRevistas
Indicadores
Ranking trimestralRanking por carreraObjetivos de Desarrollo SostenibleReporte OCDERed neuronal 3D
Acerca
MetodologíaPrivacidad

Comparative CBR Response of Clayey Subgrade Reinforced with Shredded PET and PET Fibers

Ccoaquira F.; Peña W.; Barreto U.; Martins J.A. · Geotechnical and Geological Engineering (2026) · DOI: 10.1007/s10706-026-03879-z

Resumen

Polyethylene terephthalate (PET) is a widespread waste material that has recently emerged as an alternative reinforcement for fine-grained subgrades. Although PET has been studied in different configurations, knowledge gaps remain regarding direct comparisons of different PET forms incorporated into the same soil under similar experimental conditions. This study compared shredded PET and PET fibers in a clayey subgrade using dosage ranges specific to each configuration and examined the hydraulic behavior of the mixtures with PET fibers that showed favorable mechanical performance. Shredded PET was incorporated at dosages of 3.0%, 7.0%, and 10.0%, whereas PET fibers were added at dosages of 0.5%, 1.0%, and 3.0%, all relative to the dry weight of the soil. Mechanical performance was evaluated through Modified Proctor and soaked California Bearing Ratio (CBR) tests, while hydraulic conductivity was determined using variable-head hydraulic conductivity tests on the control soil and the mixtures with PET fibers. None of the shredded-PET mixtures exceeded the representative CBR of the control, whereas the fiber-reinforced mixtures achieved reconstructed values between 17.76 and 77.74% higher, with the highest value at 3.0%. Because only one specimen was tested per compaction effort, these results are point estimates and do not establish statistical trends or an optimum dosage. Under the evaluated conditions, the fiber-reinforced specimens yielded numerically lower hydraulic conductivity values than the control specimen, with the lowest value within the fiber subset at 1.0%. However, the control and fiber-reinforced specimens were tested under different inlet pressures, confining pressures, and hydraulic heads; therefore, the numerical difference between them cannot be attributed solely to PET fibers. Because only one hydraulic conductivity determination was performed per condition, these observations are exploratory. © The Author(s), under exclusive licence to Springer Nature Switzerland AG 2026.

Instituciones: Universidad Continental