TY - JOUR
T1 - Low-Temperature Performance of Toner-Modified Asphalt Binder
AU - Notani, Mohammad Ali
AU - Moghadas Nejad, Fereidoon
AU - Fini, Ellie H.
AU - Hajikarimi, Pouria
N1 - Publisher Copyright:
© 2019 American Society of Civil Engineers.
Copyright:
Copyright 2019 Elsevier B.V., All rights reserved.
PY - 2019/9/1
Y1 - 2019/9/1
N2 - Waste nanotoner is a semiheavy waste material that can be very dangerous to the environment. It can be added to original asphalt binder to enhance some rheological and mechanical properties of the asphalt binder. The objective of this study is evaluation of the effect of waste nanotoner modification on low-temperature properties of neat asphalt binder. Low-temperature characterizations of toner-modified asphalt (TMA) and original asphalt binder were studied by using both experimental and viscoelastic modeling approaches. A bending beam rheometer (BBR) was used to measure creep compliance of neat and modified specimens as a constitutive viscoelastic function. Flexural creep stiffness and rate of stress relaxation were calculated, implementing the BBR results. In addition, for better investigation of low-temperature behavior of modified asphalt binders, two indices were used, including dissipated energy ratio (DER) and derivation of creep compliance (DCC) based on viscoelastic modeling and implementing the Burgers model. Also, differential scanning calorimetry (DSC) testing was performed for determining the glass transition temperature of asphalt binder in the presence of waste nanotoner. This study shows that waste toner can be used as a useful modifier to improve low-service-temperature characteristics of asphalt binders up to 8% of neat asphalt binder's weight. In addition, this research shows that implementing derivation of creep compliance can reflect the effect of waste nanotoner modification on the microstructure of an asphalt binder at low temperatures.
AB - Waste nanotoner is a semiheavy waste material that can be very dangerous to the environment. It can be added to original asphalt binder to enhance some rheological and mechanical properties of the asphalt binder. The objective of this study is evaluation of the effect of waste nanotoner modification on low-temperature properties of neat asphalt binder. Low-temperature characterizations of toner-modified asphalt (TMA) and original asphalt binder were studied by using both experimental and viscoelastic modeling approaches. A bending beam rheometer (BBR) was used to measure creep compliance of neat and modified specimens as a constitutive viscoelastic function. Flexural creep stiffness and rate of stress relaxation were calculated, implementing the BBR results. In addition, for better investigation of low-temperature behavior of modified asphalt binders, two indices were used, including dissipated energy ratio (DER) and derivation of creep compliance (DCC) based on viscoelastic modeling and implementing the Burgers model. Also, differential scanning calorimetry (DSC) testing was performed for determining the glass transition temperature of asphalt binder in the presence of waste nanotoner. This study shows that waste toner can be used as a useful modifier to improve low-service-temperature characteristics of asphalt binders up to 8% of neat asphalt binder's weight. In addition, this research shows that implementing derivation of creep compliance can reflect the effect of waste nanotoner modification on the microstructure of an asphalt binder at low temperatures.
KW - Asphalt binder
KW - Bending beam rheometer (BBR)
KW - Differential scanning calorimetry (DSC)
KW - Low-temperature cracking
KW - Waste nanotoner
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U2 - 10.1061/JPEODX.0000123
DO - 10.1061/JPEODX.0000123
M3 - Article
AN - SCOPUS:85065534391
SN - 2573-5438
VL - 145
JO - Journal of Transportation Engineering Part B: Pavements
JF - Journal of Transportation Engineering Part B: Pavements
IS - 3
M1 - 04019022
ER -