• Title/Summary/Keyword: 중온 아스팔트

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Evaluation of Properties of Warm-Mix Recycled Asphalt Binder for Promoting the Recycled Asphalt (순환골재 활성화를 위한 중온 재생 아스팔트 바인더 특성 평가)

  • An, Ji Hun;Kim, Nakseok
    • KSCE Journal of Civil and Environmental Engineering Research
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    • v.36 no.6
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    • pp.1101-1107
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    • 2016

  • As an increase in the amount of RAP, there are growing interests in recycling asphalt concrete. In case of using the RAP as recycled asphalt pavement, it tends to be quality deteriorate. Therefore, the amount of RAP using is advised to be limited or has to be used with rejuvenator. In this study, asphalt mixture containing WMRA was analyzed to be used up to 50% for the sake of convenience on the process. As the results of evaluation, there was no significant difference in case of using 30% of RAP in the test of Marshall stability. However, in case of WMRA using up to 50%, it was satisfied criteria by flow value at 34.7. Further, result of toughness test was found that the crack resistance showed 55% higher than using straight asphalt when using WMRA binder up to 50%. According to the results of directly comparing crack resistance through repeated direct tensile test, it was shown that the fatigue crack resistance of WMRA pavement was increased by 263%. Therefore, it was shown that WMRA binder was effective in recycling RAP because WMRA binder could increase the percentage of RAP using up to 50%.

  • https://doi.org/10.12652/Ksce.2016.36.6.1101 인용 PDF KSCI

Characterization of Flame-Retardant Foam Asphalt (난연성 폼아스팔트 특성에 관한 연구)

  • Hong, Young-Keun
    • Elastomers and Composites
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    • v.47 no.3
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    • pp.246-253
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    • 2012

  • This study was carried out to prepare a type of warm mix asphalt. Through urethane foam and emulsion asphalt preparation techniques a protocol of asphalt foam was made. Then three kinds of flame retardant agents were added in there to alleviate the inherent susceptability of asphalt and foam material to flame and thus flame retardant asphalt foam was made. The internal structure of form asphalt was composed of open cell. The higher the NCO% brought the larger the cell and the stronger also. Asphalt increased the strength of the foam. Among the flame retardant agents employed tritorylphosphate was the most effective.

  • https://doi.org/10.7473/EC.2012.47.3.246 인용 PDF KSCI