• Title/Summary/Keyword: Skid

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Characterization of Porous Asphalt Concrete Coated with MMA Resin (아크릴 수지로 코팅한 배수성 아스팔트 콘크리트의 특성 평가)

  • Choi, Tae-Jun;Lee, Hyun-Jong;Kim, Tae-Woo;Song, Jae-Hyok
    • International Journal of Highway Engineering
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    • v.11 no.2
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    • pp.111-120
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    • 2009

  • This paper presents a fundamental findings of the functional and structural performance of the porous asphalt concrete coated with MMA resin. To evaluate the structural performance, cantabro, wheel tracking, moisture sensitivity and indirect tensile fatigue tests are performed. The tests results show that the cantabro loss is reduced three times and fatigue resistance is significantly increased after the specimens are coated with MMA resin. However there are little changes in the rutting and moisture damage resistances before and after the coating. Air voids, permeability and BPT(British Pendulum Test) tests are conducted to study the functional performance. It is observed form the tests that the air voids and permeability are slightly decreased after the coating. However, the changes in the air voids and permeability are negligible. The skid resistance of the coated specimens is lower than reference specimens. However, the skid resistance is maintained beyond the level of the reference specimens when silica sands are chipped on top of the coated surface.

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Initial Performance Evaluation of Fine-size Exposed Aggregate PCC Pavement by Experimental Construction (시험시공을 통한 소입경 골재노출 콘크리트포장의 초기 공용성 평가)

  • Kim, Young-Kyu;Choi, Don-Hwa;Lee, Seung-Woo;Kim, Hyung-Bae
    • International Journal of Highway Engineering
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    • v.12 no.1
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    • pp.87-98
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    • 2010

  • Surface of fine-size exposed aggregate Portland cement concrete pavements is consists of exposed coarse aggregate by removing upper 2~3mm mortar of concrete slab. Fine-size exposed aggregate PCC pavements have advantages of maintaining low-noise and adequate skid-resistance level during the performance period. In order to provide the successful exposed concrete aggregate pavement, uniform distribution of the coarse aggregate on pavement surface through adequate the mix design and exposing method. In this study, evaluated initial performance of fine-size exposed aggregate PCC pavement by experimental construction. And it was known that fine-size exposed aggregate concrete pavement which can reduce the noise and maintain the adequate level of skid resistance and strength.

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