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    Effect of Salt Freeze–Thaw Cycle on Crack Resistance of Steel Slag Rubber Powder Modified Asphalt Mixture

    Source: Journal of Materials in Civil Engineering:;2024:;Volume ( 036 ):;issue: 003::page 04023612-1
    Author:
    Lan Wang
    ,
    Wei Wang
    ,
    Hanfeng Guan
    ,
    Yaxin Li
    ,
    Ke Pei
    ,
    Baiyinshuang Chen
    DOI: 10.1061/JMCEE7.MTENG-16563
    Publisher: ASCE
    Abstract: To study the crack resistance of steel slag crumb rubber modified asphalt mixture (CR-steel slag) under salt freeze–thaw cycles, we selected styrene-butadiene-styrene (SBS)-steel slag and CR-basalt as the reference group. The relationship between CR-steel slag interfacial adhesion properties and crack resistance under salt freeze–thaw (FT) cycles was investigated through semicircular bending (SCB), pull-out, and contact angle tests. The results show that the salt FT will accelerate the process of micro-cracks in the mixture to macro-cracks. With the increase of FT cycles, the crack resistance will gradually deteriorate, and significant damage will occur in the mixture at 15 freeze–thaw cycles. The mutation point of freeze–thaw times will move forward in different degrees under the action of salt solution. At the same time, with the increase of salt solution concentration, its anticracking performance first decreases and then increases, reaching an extreme value of 8%. The magnitude of the crack resistance of the three asphalt mixtures is CR-steel slag > SBS-steel slag > CR-basalt. The macroscopic cracking index of asphalt mixtures has an excellent positive correlation with the matching index, and the matching index model has sufficient accuracy in evaluating the cracking resistance of three asphalt mixtures under the action of salt freeze–thaw cycles. Based on the surface energy theory to evaluate the crack resistance of the mixture from a microscopic perspective, combined with macroscopic evaluation indexes, the evaluation results are accurate and more reliable.
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      Effect of Salt Freeze–Thaw Cycle on Crack Resistance of Steel Slag Rubber Powder Modified Asphalt Mixture

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4297932
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    • Journal of Materials in Civil Engineering

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    contributor authorLan Wang
    contributor authorWei Wang
    contributor authorHanfeng Guan
    contributor authorYaxin Li
    contributor authorKe Pei
    contributor authorBaiyinshuang Chen
    date accessioned2024-04-27T22:57:36Z
    date available2024-04-27T22:57:36Z
    date issued2024/03/01
    identifier other10.1061-JMCEE7.MTENG-16563.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4297932
    description abstractTo study the crack resistance of steel slag crumb rubber modified asphalt mixture (CR-steel slag) under salt freeze–thaw cycles, we selected styrene-butadiene-styrene (SBS)-steel slag and CR-basalt as the reference group. The relationship between CR-steel slag interfacial adhesion properties and crack resistance under salt freeze–thaw (FT) cycles was investigated through semicircular bending (SCB), pull-out, and contact angle tests. The results show that the salt FT will accelerate the process of micro-cracks in the mixture to macro-cracks. With the increase of FT cycles, the crack resistance will gradually deteriorate, and significant damage will occur in the mixture at 15 freeze–thaw cycles. The mutation point of freeze–thaw times will move forward in different degrees under the action of salt solution. At the same time, with the increase of salt solution concentration, its anticracking performance first decreases and then increases, reaching an extreme value of 8%. The magnitude of the crack resistance of the three asphalt mixtures is CR-steel slag > SBS-steel slag > CR-basalt. The macroscopic cracking index of asphalt mixtures has an excellent positive correlation with the matching index, and the matching index model has sufficient accuracy in evaluating the cracking resistance of three asphalt mixtures under the action of salt freeze–thaw cycles. Based on the surface energy theory to evaluate the crack resistance of the mixture from a microscopic perspective, combined with macroscopic evaluation indexes, the evaluation results are accurate and more reliable.
    publisherASCE
    titleEffect of Salt Freeze–Thaw Cycle on Crack Resistance of Steel Slag Rubber Powder Modified Asphalt Mixture
    typeJournal Article
    journal volume36
    journal issue3
    journal titleJournal of Materials in Civil Engineering
    identifier doi10.1061/JMCEE7.MTENG-16563
    journal fristpage04023612-1
    journal lastpage04023612-11
    page11
    treeJournal of Materials in Civil Engineering:;2024:;Volume ( 036 ):;issue: 003
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
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