CAJ | 학술논문

温拌再生沥青混合料（Warm Mix Asphalt，WMA）是一种节能、环保、废料二次利用的新型路用材料，但其水稳性能不良是该材料推广、应用的技术瓶颈。研究从 RAP 级配变异性角度分析其对 WMA 水稳性能的影响。首先依托渝长高速大修工程、成渝高速大修工程，进行回收沥青混合料（Recycled Asphalt Pavement，RAP）级配变异性分析；其次分析 RAP 级配变异对温拌再生沥青混合料（Warm Mix Asphalt，WMA）水稳性能的影响。结果表明：RAP 级配变异性对 WMA 水稳性评价指标 TSR 影响较为明显，且对试件空隙率、冻后强度影响较大，而对试件冻前强度影响不明显；与直接回收 RAP 的级配变异性相比，采用破碎、分档工艺对回收 RAP 进行处理，可较好控制RAP 级配变异性，进一步保证 WMA 水稳性能。
온반재생력청혼합료（Warm Mix Asphalt，WMA）시일충절능、배보、폐료이차이용적신형로용재료，단기수은성능불량시해재료추엄、응용적기술병경。연구종 RAP 급배변이성각도분석기대 WMA 수은성능적영향。수선의탁투장고속대수공정、성투고속대수공정，진행회수력청혼합료（Recycled Asphalt Pavement，RAP）급배변이성분석；기차분석 RAP 급배변이대온반재생력청혼합료（Warm Mix Asphalt，WMA）수은성능적영향。결과표명：RAP 급배변이성대 WMA 수은성평개지표 TSR 영향교위명현，차대시건공극솔、동후강도영향교대，이대시건동전강도영향불명현；여직접회수 RAP 적급배변이성상비，채용파쇄、분당공예대회수 RAP 진행처리，가교호공제RAP 급배변이성，진일보보증 WMA 수은성능。
Warm mix asphalt is a kind of new road material,which is energy-saving,environmen-tal protection and waste utilization again.However,the poor moisture sensitivity performance of WMA is the technical bottleneck.The effect on the moisture sensitivity performance of WMA is analyzed on the view of RAP aggregate gradation variability in the study.The variability of RAP aggregate gradation is calculated and analyzed based on Chengyu and Yuchang projects first;effects of RAP variability on the moisture sensitivity performance of WMA are analyzed further.The results show that:effects of RAP ag-gregate gradation variability on the moisture sensitivity performance of WMA are significant,which influ-ents the void fraction and splitting strength after frozen observably,but the effect on splitting strength be-fore frozen is not obvious;RAP variability can be better controlled by preprocessing,which ensures mois-ture sensitivity performance of WMA further.