Repositorio
Institucional

Duarte-Nass, Carla

Valdes-Vidal, Gonzalo

Calabi-Floody, Alejandra

Mignolet, Cristian

Diaz, Cristian

Development of a New Additive Based on Textile Fibers of End-of-Life Tires (ELT) for Sustainable Asphalt Mixtures with Improved Mechanical Properties

MDPI

POLYMERS

en

End-of-life tires (ELT) are a worldwide problem. Rubber, steel, and different textile fibers are the by-products of ELT. Unlike rubber and steel, waste tire textile fibers (WTTF) are disposed of in landfills or burned. This study developed an additive made with WTTF to be incorporated into conventional hot mix asphalt (HMA), and its performance properties were evaluated. First, a characterization of the WTTF used was made and a manufacture protocol was established. Then, a reference HMA was designed and mixtures with different addition percentages (2%, 5% and 8%) of the WTTF-based additive were evaluated. The mechanical properties studied were stiffness modulus, moisture susceptibility, rutting resistance, stripping, and cracking resistance. The results indicated that the addition of the 2% and 5% WTTF-based additive improved these performance properties. Moreover, all addition percentages of the WTTF-based additive evaluated demonstrated a decrease of over 29% in permanent deformation according to the Hamburg Wheel Tracking Test. Thus, the use of the WTTF would not only be valuing a waste, but an asphalt mixture with improved properties would be obtained, contributing to the circular economy by reusing a material and prolonging the useful life of the asphalt mixture.

artículo original

This research was funded by the National Research and Development Agency of Chile (ANID) conducted within the framework of the FONDEF IDEA Project, grant No. ID20I10160, as well as the APC.

Esta investigación fue financiada por la Agencia Nacional de Investigación y Desarrollo de Chile (ANID) realizada en el marco del Proyecto FONDEF IDEA, subvención No. ID20I10160, así como por la APC.

10.3390/polym14163250

PDF

asphalt mixture

additive

end-of-life tires (ELT)

performance properties

HOT MIX ASPHALT

REUSE

SCENARIO

STRENGTH

Ciencia de los polímeros

mezcla asfáltica

aditivo

neumáticos al final de su vida útil (ELT)

propiedades de rendimiento

MEZCLA ASFALTICA CALIENTE

REUTILIZACIÓN

ESCENARIO

RESISTENCIA

Ingeniería Civil

Ingeniería Ambiental y Geológica

Ingeniería de los Materiales

Development of a New Additive Based on Textile Fibers of End-of-Life Tires (ELT) for Sustainable Asphalt Mixtures with Improved Mechanical Properties

artículo original

version publicada

CC BY 4.0

CC BY 4.0

acceso abierto

acceso abierto

ANID ID20I10160

WOS:000845814700001