• Title/Summary/Keyword: concrete pavements

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A Study for the factors affecting to the life of Asphalt Overlay on Aged Cement Concrete Pavement (노후화 된 시멘트 콘크리트 포장의 아스팔트 덧씌우기 포장 수명에 미치는 영향인자에 관한 연구)

  • Son, Hyeon-Jang;Askhat, Turgynbekuly;Kim, Young-Kyu;Lee, Seung-Woo
    • International Journal of Highway Engineering
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    • v.13 no.1
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    • pp.207-221
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    • 2011
  • More than sixty percentage of highway in South Korea were constructed by concrete pavements and more than half of the concrete pavements were twenty years or older. The most of highway have difficulty in providing detour due to the traffic and road condition of South Korea. So far, asphalt concrete has been used for the overlay of aged cement concrete pavement. However, the frequent early damage and maintenance of typical asphalt overlay due to repetitive maintenance causes inconvenience of road users and expensive costs. It is necessary to investigate the factors affecting the performance of asphalt concrete overlay to improve the performance of asphalt overlay. However, the performance data of asphalt concrete overlay in South Korea does not exist. In this research, to investigate on the factors affecting the life of asphalt concrete overlay was attempted based on statistical analysis of the performance data of asphalt concrete overlay included in LTPP (Long-Term Pavement Performance) Database of U.S.A.