未來幾年之後鋪設轉爐石瀝青混凝土之鋪面勢必會再需要重新刨除與維護，而刨除所產生之含有轉爐石刨除料的品質如何控管，及如何達到循環經濟再生再利用的使用，若未來這些含有再生料之刨除料無法再被循環使用或是無其他去化途徑，將失去原本將工業副產品應用於道路工程循環再利用之美意; 第一期研究(MOST107-2221-E-008-050-)含轉爐石刨除料為轉爐石添加50 %(粗粒料25 %、細粒料25 %)與30 %細粒料之瀝青混合料，鋪築迄今已超過4年，從轉爐石原始性質、配合設計添加比例等具有材料之完整資料，可對於含轉爐石刨除料之再生瀝青混凝土進行更有效之評估，透過第一期於實驗室含轉爐石刨除料配合設計之成果，製作試體進行成效試驗，評估轉爐石循環再利用使用於瀝青混凝土，抗水分侵害之敏感程度分析，透過煮沸試驗、殘餘間接張力比試驗及漢堡輪跡試驗、評估顯著影響抗水分侵害表現之因子(油膜厚度、級配、孔隙率等)，並SGC旋轉次數與累積交通量關係式，以交通量ESAL與輪跡試驗結果比對，評估耐用性與鋪面產生破壞之殘餘壽年，最後透過從試驗室配合設計、耐久性及成效試驗評估，進而對於含轉爐石刨除料的使用、生產、管制等，提出建議之管理程序。 ;The Taiwan government enforce the pavement surface layer should adopt BOF slag to replace the coarse aggregate in asphalt concrete for reduce the waste. It is expected the asphalt concrete pavement should face the maintenance and rehabilitation after couple years, the RAP would contain some BOF slag, and how to control the quality of recycled asphalt concrete would be an important issue for pavement engineering. If the rap contains some BOF slag couldn't be used in into recycled asphalt concrete or the other application, the BOF slag recycle policy of Taiwan government would be totally lose the original meanings. The first year study (MOST107-2221-E-008-050- ), two different rap of contain BOF slag types were used for this study. One is the origin mixture contain 50% BOF slag (contain 25% for course &25% for fine) the other one is contain 50% BOF slag (25% for fine). Both has been more than 4 years since the construction. In this study, the BOF slag original behavior and Mix design in the laboratory and construction, could be more efficient evaluation mixture design and quality control process of asphalt mixture with rap contain BOF slag. The objective of this study is evaluate the moisture sensitivity and anti-rutting capacity of asphalt mixture with rap contain BOF slag, the main evaluate the relationship between moisture sensitivity and asphalt mixture parameter included film thickness, air voids and gradation. In addition, the remain service life of asphalt concrete with rap contain BOF slag would be predicted via the relationship between SGC gyration No., ESALs, and Rutting. Based the two years results, the recommendation procedure of mixture design, quality control for asphalt concrete with rap contains BOF slag would be purposed by this study.
