RISS 검색 - 국내학술지논문 상세보기

다국어 초록 (Multilingual Abstract)

PURPOSES : The objective of this study is to evaluate the feasibility of applying properties of asphalt binder other than absolute viscosity (AV) to evaluate the rejuvenation level of the binder from reclaimed asphalt pavement (RAP) in recycled asphalt mixtures (RAMs). METHODS : The G*/sin and critical temperature (CT) for determining high performance grade by DSR, and the large molecular size (LMS) using gel-permeation chromatography (GPC) were measured simultaneously with the AV of two virgin asphalt binders (58–22 for RAM and 64–22 for normal mix) and recovered binders from a RAP and four RAMs. Based on mix design, 20%, 30%, 40%, and 50% recycled RAMs were prepared, and the deformation strength (SD) of the RAMs were measured. The AV, LMS, G*/sin , and CT were measured from the recovered binders from each RAM of the SD-tested specimens. Regression analyses were performed between the LMS and AV, G*/ sin and AV, and CT and AV to determine the correlation of each property with the AV. The feasibility of evaluating the rejuvenation level of the RMA binder using the three properties (LMS, G*/sin , and CT) was evaluated. Regression analysis was performed between SD and AV, and the feasibility of using SD instead of AV ≤ 5,000 poise (p) was analyzed to evaluate the rejuvenation level of the RAM. RESULTS : The AV, LMS, G*/sin , and CT of RAM binders increased with the recycling ratio. Mixes with recycle ratios of 20% and 30% satisfied the AV ≤ 5,000 p criterion, unlike mixes with higher recycle ratios. The regression analysis results showed that the R2 values between the LMS and AV, G*/sin and AV, and CT and AV exceeded 0.96. Since these regressions showed extremely high R2 values, it can be inferred that the estimation of binder rejuvenation level using the LMS, G*/sin and CT, i.e., instead of the AV criterion, is applicable. Because SD exhibits high correlation with the binder stiffness, and the regression between SD and AV indicated R2 > 0.98, SD can be applied instead of the AV for binder rejuvenation level estimation. The main advantage of using the LMS and SD is to estimate the binder rejuvenation level without recovering the binder from the mix. CONCLUSIONS : For the binder rejuvenation level estimation of recycled mixes, it is concluded that the LMS by GPC and G*/sin and CT by DSR, and SD can be applied instead of the AV criterion. However, since this study was performed using limited materials, further studies involving many other materials may be performed to generalize the current conclusion.

목차 (Table of Contents)

ABSTRACT
1. 서론
2. 재료 및 방법
2.1. 사용 재료
2.2. RAP 특성 및 순환아스팔트 혼합물 제조

ABSTRACT
1. 서론
2. 재료 및 방법
2.1. 사용 재료
2.2. RAP 특성 및 순환아스팔트 혼합물 제조
2.3. 바인더 특성 시험
3. 결과분석 및 고찰
3.1. RAP 및 Asphalt 특성
3.2. 순환아스팔트 혼합물(RAM) 및 회수바인더 특성
3.3. 바인더 특성 간의 상관성 분석
3.4. 바인더 특성 판정 값 추정
3.5. 혼합물 특성에 의한 판정
4. 결론
REFERENCES

참고문헌 (Reference)

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4 Asphalt Institute, "Superpave performance graded asphalt binder specification an testing" 2003

5 Lee, S, "Significance of short-term aging due to high asphalt mixture temperature" 19 (19): 11-20, 2014

6 Kim, K. W, "Reducing stiffness of oxidized binder in recycled asphalt mixture by stage mixing" 78 : 201-233, 2007

7 MOLIT, "Production and Construction Guide for asphalt mixtures" Ministry of Land, Infrastructure and Transport 2017

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9 Lee, S. J, "Laboratory evaluation of the effects of short-term oven aging on asphalt binders in asphalt mixtures using HP-GPC" 23 (23): 3087-3093, 2009

10 정재헌 ; 박태원 ; 도영수 ; 김광우, "LMS(%)와 S에 의한 노화 아스팔트 혼합물의 소성변형 추정" 한국도로학회 9 (9): 123-134, 2007