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    Analyzing Moisture Susceptibility of Hot-Mix Asphalt Based on Tensile Strength Ratio, Coating Ratio, and Thermodynamic Parameters

    Source: Journal of Materials in Civil Engineering:;2022:;Volume ( 034 ):;issue: 010::page 04022247
    Author:
    Alireza Houshangi Poshtmesari
    ,
    Fereidoon Moghadas Nejad
    DOI: 10.1061/(ASCE)MT.1943-5533.0004394
    Publisher: ASCE
    Abstract: Concerns exist over the potential moisture damage and adhesion of asphalt mixtures. This research aims to evaluate the adhesion and moisture susceptibility of asphalt mixtures containing two nanomaterials [nano zycotherm (NZT) and nano hydrated lime (NHL)]. Various tests [tensile strength ratio (TSR), coating ratio (CR), and surface free energy (SFE)] were conducted and compared. The findings of this research indicate that the nanomaterial-modified asphalt mixtures demonstrated a higher TSR. The image processing results for the CR of the boiling water test and modified bitumen coating on the aggregate’s surface also improved. Moreover, the amounts of SFE indicated that the free energy of cohesion in modified bitumen increased substantially compared to the base bitumen. Additionally, the free energy of adhesion in the modified bitumen with limestone and granite demonstrated higher values. Consequently, the debonding energy for the bitumen-aggregate composition and the probability of stripping in modified mixtures decreased. Considering all the adhesion indices of the bitumen-aggregate composition, including SFE, CR, and TSR, the NZT-containing mixtures had higher moisture resistance than NHL.
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      Analyzing Moisture Susceptibility of Hot-Mix Asphalt Based on Tensile Strength Ratio, Coating Ratio, and Thermodynamic Parameters

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4287773
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    contributor authorAlireza Houshangi Poshtmesari
    contributor authorFereidoon Moghadas Nejad
    date accessioned2022-12-27T20:40:20Z
    date available2022-12-27T20:40:20Z
    date issued2022/10/01
    identifier other(ASCE)MT.1943-5533.0004394.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4287773
    description abstractConcerns exist over the potential moisture damage and adhesion of asphalt mixtures. This research aims to evaluate the adhesion and moisture susceptibility of asphalt mixtures containing two nanomaterials [nano zycotherm (NZT) and nano hydrated lime (NHL)]. Various tests [tensile strength ratio (TSR), coating ratio (CR), and surface free energy (SFE)] were conducted and compared. The findings of this research indicate that the nanomaterial-modified asphalt mixtures demonstrated a higher TSR. The image processing results for the CR of the boiling water test and modified bitumen coating on the aggregate’s surface also improved. Moreover, the amounts of SFE indicated that the free energy of cohesion in modified bitumen increased substantially compared to the base bitumen. Additionally, the free energy of adhesion in the modified bitumen with limestone and granite demonstrated higher values. Consequently, the debonding energy for the bitumen-aggregate composition and the probability of stripping in modified mixtures decreased. Considering all the adhesion indices of the bitumen-aggregate composition, including SFE, CR, and TSR, the NZT-containing mixtures had higher moisture resistance than NHL.
    publisherASCE
    titleAnalyzing Moisture Susceptibility of Hot-Mix Asphalt Based on Tensile Strength Ratio, Coating Ratio, and Thermodynamic Parameters
    typeJournal Article
    journal volume34
    journal issue10
    journal titleJournal of Materials in Civil Engineering
    identifier doi10.1061/(ASCE)MT.1943-5533.0004394
    journal fristpage04022247
    journal lastpage04022247_17
    page17
    treeJournal of Materials in Civil Engineering:;2022:;Volume ( 034 ):;issue: 010
    contenttypeFulltext
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