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학제간연구 과학기술학 뇌인지과학 기술정책 기타 복합학

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논문 기본 정보

자료유형
학술저널
저자정보
문기훈 (Korea Expressway Corporation Pavement Research Division) 권오선 (Korea Expressway Corporation Pavement Research Division) 조문진 (Do-Kyeong Construction Corporation R&D Center)
저널정보
한국도로학회 한국도로학회논문집 한국도로학회논문집 제20권 제6호
발행연도
2018.1
수록면
59 - 68 (10page)

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초록· 키워드

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PURPOSES : Using recyclable materials in asphalt pavement industry is one of the essential tasks not only for saving construction budgets but also for mitigating environmental pollutions. Over the past decades, several efforts have been made by road maintenance agencies to incorporate various recyclable materials into virgin asphalt paving mixtures. As a result, reclaimed asphalt pavement (RAP), which consists of old pavement material was selected as one of most widely used recyclable materials. In this paper, the effects of using different amounts of single-recycled RAP (SRRAP) and double-recycled RAP (DRRAP) on the low-temperature characteristics of asphalt mixtures were investigated. METHODS :To evaluate the low-temperature characteristics of SRRAP and DRRAP mixtures, two experiments, the bending beam mixture creep test and semicircular bending fracture test were performed. The experimental parameters: creep stiffness, m-value, thermal stress, critical cracking temperature, fracture energy, and fracture toughness were computed then compared. RESULTS : RAP mixtures (SRRAP or DRRAP) showed lower mechanical performance compared with conventional asphalt mixtures. The differences became distinct with increased RAP addition. However, the performance differences between SRRAP and DRRAP mixtures were not significant in all cases, which indicate the possible application of re-recycling technology (DRRAP) in the asphalt pavement industry. CONCLUSIONS : The addition of RAP to virgin asphalt can mitigate low-temperature performance despite the improvement in fracture performance observed in some cases. Therefore, using RAP (SRRAP or DRRAP) mixtures on inter or sublayer construction, but not on the surface layer, is recommended. Moreover, the possibility of applying double-recycling technology in asphalt pavement industry can be introduced in this study because not significant performance differences were found between SRRAP and DRRAP mixtures especially at low temperature.
#Low-temperature performance #Single-Recycled Reclaimed Asphalt Pavement #SRRAP) #Double-Recycled Reclaimed Asphalt Pavement #DRRAP) #Bending Beam Mixture Creep Test #BBMCT) #Semi Circular Bending #SCB) fracture test

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참고문헌 (33)

참고문헌 신청
American Standards of Testing Materials / 2016 / Standard Practice for Determining Low-Temperature Performance Grade (PG) of Asphalt Binders / ASTM: Specification D 6816-11 google schola Association of State Highway and Transportation Officials / 2016 / Standard specication for performancegraded asphalt binder / AASHTO: Specification M320-16 google schola Association of State Highway and Transportation Officials / 2012 / Determining the Flexural Creep Stiffness of Asphalt Binder Using the Bending Beam Rheometer (BBR) / AASHTO: Specification T313-12 google schola Barisic, I. / 2017 / Multidisciplinary approach to the environmental impact of steel slag reused in road construction / Road Material and Pavement Design (RMPD) 18(4):897~912 google schola Bressi, S. / 2015 / Particle clustering phenomena in hot asphalt mixtures with high content of reclaimed asphalt pavements / Construction and Building Materials 100:207~217 google schola

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