Influence of Waste Toner on Asphalt Binder: Chemical and Rheological Characterization

The growing amount of waste toner (WT) has posed a significant environmental challenge. Meanwhile, researchers are interested in the feasibility of utilizing waste toner as an asphalt binder modifier because its primary chemical components (Styrene-acrylic copolymer and carbon black) are known to im...

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Main Authors: Prince Igor Itoua, Daquan Sun, Ping Li, Shihui Shen
Format: Article
Language:English
Published: MDPI AG 2023-03-01
Series:Molecules
Subjects:
Online Access:https://www.mdpi.com/1420-3049/28/6/2794
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author Prince Igor Itoua
Daquan Sun
Ping Li
Shihui Shen
author_facet Prince Igor Itoua
Daquan Sun
Ping Li
Shihui Shen
author_sort Prince Igor Itoua
collection DOAJ
description The growing amount of waste toner (WT) has posed a significant environmental challenge. Meanwhile, researchers are interested in the feasibility of utilizing waste toner as an asphalt binder modifier because its primary chemical components (Styrene-acrylic copolymer and carbon black) are known to improve asphalt properties. The objective of this study was to evaluate the chemical and rheological properties of the waste-toner-modified asphalt binder and hence determine the suitability of integrating waste toner for asphalt modification. The waste-toner-modified asphalt (TMA) binders were produced by blending base asphalt with two types of waste toners of different gradation sizes. Microscopic tests such as x-ray fluorescence (XRF), attenuated total reflectance transform infrared spectroscopy (ATR-FTIR), and scanning electron microscopy with energy dispersive X-ray (SEM-EDS) and fluorescence microscope, as well as rheology tests such as multiple stress creep recovery (MSCR) tests, oscillation tests, and bending beam rheometer tests were performed. The FTIR results showed that there was a chemical reaction between waste toners and base asphalt binder. A fluorescence effect was observed on the binders produced with different toners used in this research. The binder modified with an optimal content of 8%WTs revealed better high and low-temperature properties. Additionally, 8%WTs used in this research could change the PG70-22 binder to PG76-22 binder. The rutting properties of asphalt material were improved for its improved elasticity. In addition, the 200-mesh TMA binders were desirable with respect to waste toner particle size. Overall, there is a benefit to using waste toner in the asphalt industry.
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spelling doaj.art-128280b2822341b9b9b61ed8ed999a132023-11-17T12:55:16ZengMDPI AGMolecules1420-30492023-03-01286279410.3390/molecules28062794Influence of Waste Toner on Asphalt Binder: Chemical and Rheological CharacterizationPrince Igor Itoua0Daquan Sun1Ping Li2Shihui Shen3Key Laboratory of Road and Traffic Engineering of Ministry of Education, Tongji University, 4800 Cao’an Road, Shanghai 201804, ChinaKey Laboratory of Road and Traffic Engineering of Ministry of Education, Tongji University, 4800 Cao’an Road, Shanghai 201804, ChinaSchool of Traffic and Transportation Engineering, Changsha University & Technology, 2nd Section, Wanjiali RD (S), Changsha 410114, ChinaSchool of Traffic and Transportation Engineering, Changsha University & Technology, 2nd Section, Wanjiali RD (S), Changsha 410114, ChinaThe growing amount of waste toner (WT) has posed a significant environmental challenge. Meanwhile, researchers are interested in the feasibility of utilizing waste toner as an asphalt binder modifier because its primary chemical components (Styrene-acrylic copolymer and carbon black) are known to improve asphalt properties. The objective of this study was to evaluate the chemical and rheological properties of the waste-toner-modified asphalt binder and hence determine the suitability of integrating waste toner for asphalt modification. The waste-toner-modified asphalt (TMA) binders were produced by blending base asphalt with two types of waste toners of different gradation sizes. Microscopic tests such as x-ray fluorescence (XRF), attenuated total reflectance transform infrared spectroscopy (ATR-FTIR), and scanning electron microscopy with energy dispersive X-ray (SEM-EDS) and fluorescence microscope, as well as rheology tests such as multiple stress creep recovery (MSCR) tests, oscillation tests, and bending beam rheometer tests were performed. The FTIR results showed that there was a chemical reaction between waste toners and base asphalt binder. A fluorescence effect was observed on the binders produced with different toners used in this research. The binder modified with an optimal content of 8%WTs revealed better high and low-temperature properties. Additionally, 8%WTs used in this research could change the PG70-22 binder to PG76-22 binder. The rutting properties of asphalt material were improved for its improved elasticity. In addition, the 200-mesh TMA binders were desirable with respect to waste toner particle size. Overall, there is a benefit to using waste toner in the asphalt industry.https://www.mdpi.com/1420-3049/28/6/2794modified asphalt binderwaste tonerrheologyrecycled materialmicroscopic test
spellingShingle Prince Igor Itoua
Daquan Sun
Ping Li
Shihui Shen
Influence of Waste Toner on Asphalt Binder: Chemical and Rheological Characterization
Molecules
modified asphalt binder
waste toner
rheology
recycled material
microscopic test
title Influence of Waste Toner on Asphalt Binder: Chemical and Rheological Characterization
title_full Influence of Waste Toner on Asphalt Binder: Chemical and Rheological Characterization
title_fullStr Influence of Waste Toner on Asphalt Binder: Chemical and Rheological Characterization
title_full_unstemmed Influence of Waste Toner on Asphalt Binder: Chemical and Rheological Characterization
title_short Influence of Waste Toner on Asphalt Binder: Chemical and Rheological Characterization
title_sort influence of waste toner on asphalt binder chemical and rheological characterization
topic modified asphalt binder
waste toner
rheology
recycled material
microscopic test
url https://www.mdpi.com/1420-3049/28/6/2794
work_keys_str_mv AT princeigoritoua influenceofwastetoneronasphaltbinderchemicalandrheologicalcharacterization
AT daquansun influenceofwastetoneronasphaltbinderchemicalandrheologicalcharacterization
AT pingli influenceofwastetoneronasphaltbinderchemicalandrheologicalcharacterization
AT shihuishen influenceofwastetoneronasphaltbinderchemicalandrheologicalcharacterization