Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

A Comparative Study of the Effect of Water Susceptibility on Polyethylene Terephthalate–Modified Asphalt Mixes Under Different Regulatory Procedures

Version 1 : Received: 8 June 2023 / Approved: 8 June 2023 / Online: 8 June 2023 (09:56:04 CEST)

A peer-reviewed article of this Preprint also exists.

Movilla-Quesada, D.; Raposeiras, A.C.; Guíñez, E.; Frechilla-Alonso, A. A Comparative Study of the Effect of Moisture Susceptibility on Polyethylene Terephthalate–Modified Asphalt Mixes under Different Regulatory Procedures. Sustainability 2023, 15, 14519. Movilla-Quesada, D.; Raposeiras, A.C.; Guíñez, E.; Frechilla-Alonso, A. A Comparative Study of the Effect of Moisture Susceptibility on Polyethylene Terephthalate–Modified Asphalt Mixes under Different Regulatory Procedures. Sustainability 2023, 15, 14519.

Abstract

Water damage is one of the main causes of roads’ deterioration throughout their service life. This effect harms the adhesion and cohesion parameters of the asphalt mix, which leads to a decrease in the structural and functional characteristics of the road surface. This research focuses on studying the water susceptibility of hot mix asphalt mixtures using three different procedures: (1) UNE-EN 12697-12, (2) ASTM D4867, and (3) AASHTO T-283. The tests are carried out on reference mixtures and mixtures modified with polyethylene terephthalate (PET) particles as an additive. The results indicate that the incorporation of 6% PET allows the limits established by the UNE-EN 12697-12 standards to be exceeded, reaching 86% of the tensile strength ratio (TSR). However, for the ASTM D4867 and AASHTO T-283 standards, the results obtained concerning the water susceptibility of the bituminous mixtures were not as satisfactory because the established minimum limits were not reached (< 75%), which indicates that the procedure applied in a test can significantly modify the results of a later application.

Keywords

Asphalt mixes; moisture damage; indirect tensile strength; polyethylene terephthalate; international standards

Subject

Engineering, Civil Engineering

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