Influencia de las fibras de polipropileno en mezclas asfálticas en caliente elaboradas con agregados reciclados de carpetas asfálticas
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2026
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Universidad Católica Santo Toribio de Mogrovejo
Resumen
En la presente investigación, se evalúa la influencia de las fibras de polipropileno en las propiedades físico mecánicas de mezclas asfálticas en caliente elaboradas con agregados reciclados de carpetas asfálticas. Para este estudio se incorporaron diferentes porcentajes de fibra de polipropileno (0.25%, 0.50%, 0.75% y 1.00%) a mezclas asfálticas en caliente usando un óptimo de carpeta asfáltica reciclada (RAP) que para este caso fue 60%. Para evaluar las propiedades físico mecánicas se utilizaron los ensayos Marshall, Cántabro y Lottman modificado, los resultados mostraron que las adiciones de 0.25% y 0.50% de fibras de polipropileno mejoraron significativamente la estabilidad flujo de la mezcla asfáltica. La durabilidad mostró una reducción de desgaste significativa, teniendo un desgaste de 4.77% para la muestra convencional y un desgaste mínimo de 0.53% para la muestra con incorporación de fibras de polipropileno. Asimismo, mediante el ensayo Lottman se halló que la razón de esfuerzo a tensión (TSR) de las mezclas asfálticas superaron el 80% mínimo permitido, alcanzando valores de hasta 95.747% para TSR
In the present investigation, the influence of polypropylene fibers on the physicalmechanical properties of hot mix asphalt mixtures made with recycled asphalt binder aggregates is evaluated. For this study, different percentages of polypropylene fiber (0.25%, 0.50%, 0.75% and 1.00%) were incorporated into hot mix asphalt mixtures using an optimum recycled asphalt binder (RAP), which in this case was 60%. To evaluate the physical-mechanical properties, the Marshall, Cantabro and modified Lottman tests were used. The results showed that the additions of 0.25% and 0.50% of polypropylene fibers significantly improved the flow stability of the asphalt mixture. Durability showed a significant reduction in wear, with a wear of 4.77% for the conventional sample and a minimum wear of 0.53% for the sample with the addition of polypropylene fibers. Likewise, by means of the Lottman test, it was found that the tensile stress ratio (TSR) of the asphalt mixtures exceeded the minimum 80% allowed, reaching values of up to 95.747% for TSR.
In the present investigation, the influence of polypropylene fibers on the physicalmechanical properties of hot mix asphalt mixtures made with recycled asphalt binder aggregates is evaluated. For this study, different percentages of polypropylene fiber (0.25%, 0.50%, 0.75% and 1.00%) were incorporated into hot mix asphalt mixtures using an optimum recycled asphalt binder (RAP), which in this case was 60%. To evaluate the physical-mechanical properties, the Marshall, Cantabro and modified Lottman tests were used. The results showed that the additions of 0.25% and 0.50% of polypropylene fibers significantly improved the flow stability of the asphalt mixture. Durability showed a significant reduction in wear, with a wear of 4.77% for the conventional sample and a minimum wear of 0.53% for the sample with the addition of polypropylene fibers. Likewise, by means of the Lottman test, it was found that the tensile stress ratio (TSR) of the asphalt mixtures exceeded the minimum 80% allowed, reaching values of up to 95.747% for TSR.
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Mezcla asfáltica, Fibras de polipropileno, Agregado reciclado (RAP), Asphalt mixture, Polypropylene fibers, Recycled asphalt pavement (RAP)
Citación
G. Panta, “Influencia de las fibras de polipropileno en mezclas asfálticas en caliente elaboradas con agregados reciclados de carpetas asfálticas,” tesis de licenciatura, Fac. de Ingeniería, Univ. USAT, Chiclayo, Perú, 2026. [En línea]. Disponible en: https://hdl.handle.net/20.500.12423/9871
