논문 상세보기
pp.9-18
PURPOSES : Preventive pavement maintenance is an economical and efficient method of infrastructure management. This study aims to improve the performance of cold thin-layer asphalt pavement, which is mainly used in earthwork pavement, and for bridge overlays and structures. METHODS : A cold asphalt mixture of modified emulsified asphalt and RAP was prepared for cold recycled thin-layer asphalt pavement. The performance of the mixture as a function of fiber reinforcement to improve flexural strength and crack resistance was evaluated.
RESULTS : The use of RAP aggregate in cold asphalt mixture was found to increase the cohesive strength of the mixture and improve the wet abrasion resistance due to the effect of the residual binder. As a result of the loaded wheel test and flexural tension test with the addition of fiber reinforcement, it was found that the crack resistance of 0.4 % glass fiber was the best, and especially, the flexibility at low temperature was excellent.
CONCLUSIONS : The cold recycled thin-layer asphalt pavement mixture has improved cohesive strength, flexural strength, and crack resistance compared to existing cold asphalt pavement materials, so it will contribute to economical and effective maintenance in preventive maintenance of bridge overlays and structural pavements.
1. 서론
2. 재료
2.1. 개질유화아스팔트
2.2. 순환골재
2.3. 섬유보강재
3. 실험 및 성능평가
3.1. 유동성 실험
3.2. 결합력 실험
3.3. 습윤마모 실험
3.4. 윤하중 재하 실험
3.5. 굴곡 인장 실험
3.6. 내투수성 및 미끄럼 저항성
4. 결론
REFERENCES
