Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Experimental Study on Styrene-Butadiene-Styrene Modified Binders and Fly Ash Micro-Filler Contributions for Implementation in Porous Asphalt Mixes

Manuel Lagos-Varas
ORCID logo ,
Diana Movilla-Quesada
* ORCID logo ,
Aitor C. Raposeiras
ORCID logo ,
Melany Villarroel
,
Ana B. Ramos-Gavilán
ORCID logo ,
Daniel Castro-Fresno
Version 1 : Received: 21 December 2023 / Approved: 21 December 2023 / Online: 21 December 2023 (10:48:28 CET)

A peer-reviewed article of this Preprint also exists.

Lagos-Varas, M.; Movilla-Quesada, D.; Raposeiras, A.C.; Villarroel, M.; Ramos-Gavilán, A.B.; Castro-Fresno, D. Experimental Study on Styrene–Butadiene–Styrene-Modified Binders and Fly Ash Micro-Filler Contributions for Implementation in Porous Asphalt Mixes. Sustainability 2024, 16, 1131. Lagos-Varas, M.; Movilla-Quesada, D.; Raposeiras, A.C.; Villarroel, M.; Ramos-Gavilán, A.B.; Castro-Fresno, D. Experimental Study on Styrene–Butadiene–Styrene-Modified Binders and Fly Ash Micro-Filler Contributions for Implementation in Porous Asphalt Mixes. Sustainability 2024, 16, 1131.

Abstract

Butadiene-Styrene copolymer (SBS) to improve the mechanical and deformation properties of the binder used in its manufacture. However, the high cost and variability of processing limit its performance. A secondary modifier to solve these problems is nano and micro materials that allow the generation of unique properties in polymeric systems. Based on this, this study experimented with fly ash micro filler ((FA) in low proportions as a binder modifier with SBS for use in PA mixes. The FA residue is considered in 3% and 5% dosages on a base binder with 5% SBS. Rheological results show that FA improves classical, linear viscoelastic (LVE), and progressive damage properties compared to the modified binder. The PA blends with FA reduced binder runout, resulting in a thicker film, showing better abrasion resistance in dry and wet conditions. Samples with FA increase the post-cracking energy in indirect tension due to higher ductility. However, they decrease the fracture energy due to higher cracking before failure. In addition, the FA manages to decrease the difference between dry and wet ITS.

Keywords

Porous asphalt mixes; Styrene-butadiene-styrene; fly ashes; bitumen; rheology

Subject

Engineering, Civil Engineering

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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