Print Email Facebook Twitter Bio-polymer modified bitumen Title Bio-polymer modified bitumen Author Tabakovic, A. (TU Delft Materials and Environment; Revolution Road Ltd; TNO) Lemmens, Jeremy (TNO) Tamis, J. (TU Delft BT/Environmental Biotechnology) van Vliet, Dave (TNO) Nahar, Sayeda (TNO) Suitela, Willem (TNO) van Loosdrecht, Mark C.M. (TU Delft BT/Environmental Biotechnology) Leegwater, G.A. (TNO) Date 2023 Abstract Bitumen is a key constitutive material in asphalt pavements. It binds together the rock scaffolding of a pavement. Bitumen provides asphalt pavement with flexibility and enables it to respond to traffic loading and return to its original condition after the loading, i.e. bitumen restores/repairs the damage. In Porous Asphalt (PA) or Stonemastic Asphalt Mix (SMA) asphalt mixtures, due its open graded structure, bitumen modifiers are used to improve or restore bitumen physical and mechanical performance. Traditionally bitumen modifiers are made with products of crude oil, such as: ethylene vinyl acetate (EVA) copolymers and styrene–butadiene–styrene (SBS). As crude oil production declines and the environmental and financial costs of crude oil extraction increase, there is a need to identify environmentally sustainable alternatives to use in bitumen. Bitumen modifiers generated from biological sources offer an environmentally friendly and economically viable alternative to crude oil based bitumen modifiers. This paper describes how PHBV (poly-3-hydroxybutyrate-co-3-hydroxyvalerate), a bio-based co-polymer, might be used as an alternative bitumen modifier. The effect of PHBV on 70/100pen was investigated for this paper. The chemical and physical effect of the PHBV on the bitumen performance was investigated using Gel Permeation Chromatography, Fourier Transformed Infrared Spectroscopy, Differential Scanning Calorimetry, microscopic imaging and Dynamic Shear Rheometer tests. The results indicate that PHBV has significant potential as a bitumen bio-polymer modifier. Subject Bio-polymerBitumenBitumen rejuvenatorPHBV (poly-3-hydroxybutyrate-co-3-hydroxyvalerate)Polymer modified bitumen To reference this document use: http://resolver.tudelft.nl/uuid:0b242068-83d6-4487-85f9-9f197fcdce77 DOI https://doi.org/10.1016/j.conbuildmat.2023.133321 ISSN 0950-0618 Source Construction and Building Materials, 406 Part of collection Institutional Repository Document type journal article Rights © 2023 A. Tabakovic, Jeremy Lemmens, J. Tamis, Dave van Vliet, Sayeda Nahar, Willem Suitela, Mark C.M. van Loosdrecht, G.A. Leegwater Files PDF 1_s2.0_S0950061823030386_main.pdf 5.55 MB Close viewer /islandora/object/uuid:0b242068-83d6-4487-85f9-9f197fcdce77/datastream/OBJ/view