논문 상세보기
pp.35-44
PURPOSES : This study aimed to evaluate the performance of carbon-reduced asphalt mixtures based on asphalt binder and asphalt mixture tests. METHODS : A carbon-reducing asphalt additive was developed, and samples were prepared by mixing the additive(0.85%, 1.35%, and 1.85%) with virgin asphalt binder to measure changes in the asphalt’s physical properties based on the content of the developed additive. The basic physical properties the penetration, softening point, ductility, and rotational viscosity and performance grade of the samples were measured, and the optimal content of the additive was determined to be 1.35%. An asphalt mixture was produced using the optimal additive content of 1.35%, and stability, indirect tensile strength, tensile strength ratio(TSR), and dynamic stability tests were conducted to compare its performance with that of hot mixed asphalt(HMA). Additionally, a dynamic modulus test that could simulate various loading conditions was conducted. Fuel consumption and CO2 emission were measured at the plant. RESULTS : The developed additive had the effect of reducing the viscosity of the binder while maintaining properties similar to those of the base binder when used at the selected content. The mixture test confirmed that the physical properties related to strength tended to decrease slightly when the additive were applied; however, all specifications were satisfied. In the dynamic modulus test, the results were confirmed to be similar to those of HMA. The fuel consumption and CO2 emission were reduced by 25-30%. CONCLUSIONS : Evidently, asphalt mixtures with carbon-reducing additives can perform at a level equivalent to that of HMA. To bolster this conclusion, it is necessary to track the long-term performance of low-carbon asphalt mixtures on pilot roads.
2. 탄소저감형 아스팔트 혼합물 개요
3. 시험재료 및 시험방법
3.1. 탄소저감형 아스팔트 첨가제
3.2. 탄소저감형 아스팔트 시험방법 및 배합
4. 탄소저감형 아스팔트의 실내 평가
4.1. 아스팔트 바인더 시험(기본 물성)
4.2. 아스팔트 바인더 시험(공용성 등급)
5. 탄소저감형 아스팔트 혼합물의 실내 평가
5.1. 배합설계 및 공시체 제작
5.2. 체적 특성(공극률 및 다짐도)
5.3. 강도 특성(마샬안정도, 간접인장강도, 터프니스)
5.4. 수분저항성 시험
5.5. 동적안정도 시험
5.6. 동탄성계수 시험
6. 연료소모량 및 탄소배출량 측정 결과
7. 결론
REFERENCES
