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    Performance Evaluation of Asphalt Binder Modified with Nanomaterials

    Source: Journal of Materials in Civil Engineering:;2025:;Volume ( 037 ):;issue: 003::page 04024547-1
    Author:
    Saad A. Abo-Qudais
    ,
    Mohammad R. Irshidat
    DOI: 10.1061/JMCEE7.MTENG-18198
    Publisher: American Society of Civil Engineers
    Abstract: This study explores the optimization of hot mix asphalt (HMA) performance through the incorporation of nano clay (NC) and carbon nano tubes (CNTs) into the asphalt binder. Through a systematic evaluation, the research determines the optimal proportions of these nanomaterials by assessing their impact on crucial asphalt properties, including viscosity, shear modulus, shift angle, stiffness, the slope of the stiffness-time curve, nonrecoverable shear compliance, and percent recoverable strain. The results reveal that an NC content exceeding 0.8% surpasses the Superpave rotational viscosity limit, thereby adversely affecting the workability of the asphalt mixture. Consequently, further testing on NC-modified binder is halted, with the focus redirected to CNTs-modified binder. The optimal CNT content is identified as 1%. At this concentration, the highest rutting parameter ratio (G*/sinδ) is achieved, along with the lowest nonrecoverable shear compliance and highest percent recoverable strain. On the other hand, this CNT content caused a minimal adverse effect from a small increase in rotational viscosity, creep stiffness at low temperature, and fatigue parameter (G*sinδ) at an average service temperature. Additionally, this CNT concentration results in the stiffness-time curve having a steeper slope, indicating less susceptibility to low-temperature cracking. These findings demonstrate that 1% CNTs substantially enhance the rutting and low-temperature cracking resistance without significantly compromising fatigue crack resistance and workability during mixing and compaction. They offer valuable insights into tailoring asphalt binder compositions for enhanced HMA performance. Numerous studies delved into the use of various polymers as additives and revealed inconsistent improvements across the mechanical properties of HMA. In some cases, these additives have even detrimentally affected HMA performance. Conversely, nanomaterials offer a promising avenue for the development of a new generation of asphalt additives. This study undertakes a comprehensive evaluation process, including an assessment of the rheological behavior, fatigue cracks resistance, and rutting resistance to provide a more holistic understanding of the modified binder’s performance. This study yields valuable insights for both the state of the art and/or state of the practice in the field of asphalt technology. The results offer quantitative data on the enhancement of binder performance through nanomaterial utilization, potentially catalyzing further research, influencing industry practices, and fostering the widespread adoption of nanomaterial-modified asphalt binders in pavement construction. This could ultimately lead to safer, more durable, longer-lasting pavements, necessitating reduced maintenance and offering increased cost-effectiveness. This study builds on previous research, refines established methodologies, and proposes modifications to industry standards. Therefore, this study is expected to integrate with or challenge existing knowledge in the realm of the impact of nanomaterials on asphalt binder performance.
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      Performance Evaluation of Asphalt Binder Modified with Nanomaterials

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    contributor authorSaad A. Abo-Qudais
    contributor authorMohammad R. Irshidat
    date accessioned2025-04-20T10:37:21Z
    date available2025-04-20T10:37:21Z
    date copyright12/27/2024 12:00:00 AM
    date issued2025
    identifier otherJMCEE7.MTENG-18198.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4305084
    description abstractThis study explores the optimization of hot mix asphalt (HMA) performance through the incorporation of nano clay (NC) and carbon nano tubes (CNTs) into the asphalt binder. Through a systematic evaluation, the research determines the optimal proportions of these nanomaterials by assessing their impact on crucial asphalt properties, including viscosity, shear modulus, shift angle, stiffness, the slope of the stiffness-time curve, nonrecoverable shear compliance, and percent recoverable strain. The results reveal that an NC content exceeding 0.8% surpasses the Superpave rotational viscosity limit, thereby adversely affecting the workability of the asphalt mixture. Consequently, further testing on NC-modified binder is halted, with the focus redirected to CNTs-modified binder. The optimal CNT content is identified as 1%. At this concentration, the highest rutting parameter ratio (G*/sinδ) is achieved, along with the lowest nonrecoverable shear compliance and highest percent recoverable strain. On the other hand, this CNT content caused a minimal adverse effect from a small increase in rotational viscosity, creep stiffness at low temperature, and fatigue parameter (G*sinδ) at an average service temperature. Additionally, this CNT concentration results in the stiffness-time curve having a steeper slope, indicating less susceptibility to low-temperature cracking. These findings demonstrate that 1% CNTs substantially enhance the rutting and low-temperature cracking resistance without significantly compromising fatigue crack resistance and workability during mixing and compaction. They offer valuable insights into tailoring asphalt binder compositions for enhanced HMA performance. Numerous studies delved into the use of various polymers as additives and revealed inconsistent improvements across the mechanical properties of HMA. In some cases, these additives have even detrimentally affected HMA performance. Conversely, nanomaterials offer a promising avenue for the development of a new generation of asphalt additives. This study undertakes a comprehensive evaluation process, including an assessment of the rheological behavior, fatigue cracks resistance, and rutting resistance to provide a more holistic understanding of the modified binder’s performance. This study yields valuable insights for both the state of the art and/or state of the practice in the field of asphalt technology. The results offer quantitative data on the enhancement of binder performance through nanomaterial utilization, potentially catalyzing further research, influencing industry practices, and fostering the widespread adoption of nanomaterial-modified asphalt binders in pavement construction. This could ultimately lead to safer, more durable, longer-lasting pavements, necessitating reduced maintenance and offering increased cost-effectiveness. This study builds on previous research, refines established methodologies, and proposes modifications to industry standards. Therefore, this study is expected to integrate with or challenge existing knowledge in the realm of the impact of nanomaterials on asphalt binder performance.
    publisherAmerican Society of Civil Engineers
    titlePerformance Evaluation of Asphalt Binder Modified with Nanomaterials
    typeJournal Article
    journal volume37
    journal issue3
    journal titleJournal of Materials in Civil Engineering
    identifier doi10.1061/JMCEE7.MTENG-18198
    journal fristpage04024547-1
    journal lastpage04024547-12
    page12
    treeJournal of Materials in Civil Engineering:;2025:;Volume ( 037 ):;issue: 003
    contenttypeFulltext
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