• Title/Summary/Keyword: 아스팔트 콘크리트

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Long-Term Performance Evaluation on the Recycled Asphalt Concrete Using the Steel Slag and Reclaimed Asphalt Pavement Aggregates (제강 슬래그 및 순환골재를 사용한 순환 아스팔트 혼합물의 장기 공용성 평가)

  • Park, Kyung-Won;Jang, Dong-Bok;Lee, Jong-Min;Kang, Byung-Hwa;Kim, Hyung-Bae
    • Journal of the Korean Recycled Construction Resources Institute
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    • v.9 no.4
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    • pp.633-641
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    • 2021

  • The study performed long-term performacne evaluation on the hot mix asphalt using the steel slag aggregates and Reclaimed Asphalt Pavement (RAP). The laboratory comparative evaluation was conducted between conventional Hot Mix Asphalt (HMA) which is entitled WC-2 and HMA containing steel slag and RAP which is entitled ES WC-2(R). Dynamic stability test, dynamic modulus test, and fatigue crack test were conducted during the comparative evaluation process. The dynamic stability test result showed that ES WC-2(R) was 140% higher than WC-2. It is noted that ES WC-2(R) showed no inflection point whereas WC-2 showed inflection point during the dynamic stability test which implies ES WC-2(R) has the higher moisture susceptability than WC-2. The dynamic modulus of ES WC-2(R) were 342.3%, 486.7%, and 350.0% higher than WC-2 at medium temperature of 21℃, low temperature of -10℃, and high temperature of 38℃ respectively. The test result showed that rutting resistance of ES WC-2(R) is higher than WC-2 at all temperature spectrum. The fatigue resistance of ES WC-2(R) were 31.7%, 325.3%, 899.9% higher at low stress level, medium stress level, and high stress level, respectively. The test result showed that ES WC-2(R) is higher than WC-2 at all stress levels. Based on the laboratory comparative evaluation, The in-situ scale Accelerated Pavement Test (APT) was conducted comparing WC-2 and WC-2(R). APT found that the rutting resistance of WC-2(R) was 45% higher than WC-2.

  • https://doi.org/10.14190/JRCR.2021.9.4.633 인용 PDF KSCI