• Title/Summary/Keyword: 도로 포장

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Temperature Characteristics of Wet-mixing Solidified Soil Pavement (습식교반경화토포장의 온도특성)

  • Yoo Ji-Hyeung;Lee Seong-Won;Kim Dae-Sung
    • International Journal of Highway Engineering
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    • v.8 no.1 s.27
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    • pp.45-54
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    • 2006
  • The Construction policy of government ever since 1970s have brought the economical growth, but has been causing environmental problems. Most roads were paved either asphalt concrete or portland cement concrete. These types of pavements has caused to rise temperature by making local heat islands in urban during summer time. Recently the wet-mixing solidified soil pavement, a kind of soil-cement, has developed and has been applied to the environment-oriented pavement. The solidified soil wet-mixed is placed on the subgrade along with asphalt concrete and portland cement concrete. Thermistors are laid in these field test pavements. The temperature gradients of these pavements are automatically measured with time. As the results of this test, the equation estimating surface temperature of pavement is proposed by analyzing measured temperature data. It is shown that the temperature change within the surface layer due to the change of air temperature is the greatest in the asphalt mixture and the least in the solidified soil mixture. Since it is proven that this wet-mixing solidified soil pavement emit less radiant heat than other existed pavements. Therefore this type of pavement can be successfully applied to the roads, such as walks, parkways, and bikeways, which are required to be human-friendly and environment-oriented.

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A Study on Economic Feasibility of Highway Maintenance Considering Carbon Amount by Using KPRP (Korea Pavement Research Program) (탄소량을 고려한 도로 유지보수 경제성에 관한 연구: KPRP (Korea Pavement Research Program) 활용)

  • Nguyen, Dinh Thanh;Choi, Jae-Ho
    • KSCE Journal of Civil and Environmental Engineering Research
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    • v.37 no.5
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    • pp.879-890
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    • 2017
  • The US Pavement Design method (AASHTO) and HDM-4, a road pavement maintenance decision system, are not suitable for domestic pavement design, construction and maintenance. KPRP(Korea Pavement Research Program) has been developed to reflect Korea's environmental conditions and vehicle characteristics, thereby, extending pavement life. The main objective of this study is to select the best alternative through Life Cycle Cost $CO_2$ (LCCC) calculations among three representative maintenance strategies using KPRP design software since the environment cost resulting from the extended pavement life will also differ. The analysis of this study illustrates that cumulative carbon emissions for 40 years in alternative 2 (Cutting and Overlaying at Year 30) is the lowest option among them, and the basic cost of $CO_2$ emission by various road maintenance and repair work can be used for suggesting an optimal maintenance strategy for highway agency.

Development of Full Scale Accelerated Pavement Testing Facility (Full Scale 포장가속시험기 개발 연구)

  • Suh, Young-Chan;Yang, Sung-Chul;Ko, Ji-Hoon;Kwak, Dong
    • 한국도로학회:학술대회논문집
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    • 2001.10a
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    • pp.23-31
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    • 2001
  • 국내 포장가속시험기의 개발은 도로신소재 개발, 중차량 교통하중의 영향분석, 온도 습도에 따른 포장체의 거동분석 등을 현장조건과 유사한 조건에서 실험 가능하게 함으로써 국내 도로분야의 연구 수준을 향상시킬 것으로 기대된다.

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