本研究中以AC-20、AR-8000、改質三型及高黏滯度改質瀝青作為試驗所使用的瀝青膠泥。除高黏滯度改質瀝青不添加纖維，各配置組均添加佔總混合料重0.4％的礦物纖維；而木質纖維是以總混合料重的0.3％添加於改質瀝青中，用來比較添加兩種不同纖維的功效。本研究較適含油量範圍均在5.0?5.5％間。選取較適含油量範圍內的最大值為本研究之最適含油量，用以製作成效試體及配置瀝青膠漿。 成效試驗中，高黏滯度改質瀝青有較高的回彈模數與潛變模數值；在間接張力方面，AR-8000添加的配置組在凍融前，有較高的間接張力值；但經過一次凍融以後，高黏滯度改質瀝青的間接張力值為最高；因此在浸水殘餘強度(TSR)上，除AR-8000的配置組的TSR不能達到75％外，其他配置組均有達到75％。比較木纖及礦纖的間接張力值，發現木纖經過凍融之後，間接張力值比礦纖的配置組降低許多。車轍試驗上，僅高黏滯度改質瀝青超過到動穩定值3000cycle/mm。而抗滑值與室內透水性試驗，各配置組有相近的結果。在流變行為上，高黏滯度改質瀝青的擁有最大的黏滯度，較高的G*/sinδ及較低的相位角δ；比較木纖及礦纖上，木纖比礦纖擁有較高的G*/sinδ及較低的相位角。本研究計算出的結果與文獻中的油膜厚度相近。進行鋪面結構厚度檢驗結果顯示，排水性瀝青混凝土不但能提供排水的功能，亦可提供部分結構強度。 在瀝青膠漿與成效試體的關連性上，除韌性與間接張力、車轍深度與G*/sinδ有高度相關外，相位角δ與各項成效試驗均有相當程度的相關。因此，本研究建議可以瀝青膠漿流變性質來取代傳統成效試驗，用來選取符合經濟效益且兼顧成效的排水性瀝青混凝土。 We took AC-20, AR-8000, PMA, and high-viscosity asphalt(HiAsph) as the factors of the asphalt. Without adding to Hiasph, mineral fibers(MF) were added. Besides, cellulose fibers(CF) were added to PMA for comparing the effects of different fibers. The VFA period was on 5.0%~5.5%(total mix) and prepared for marshell samples and mastics. We took the upper one of the period for the design oil content. Comparing the mastic rheology and performance of the Specimans, we could conclude that δ was not only highly correlated with the work of IDT, and creep modulus, but also nearly highly correlated with IDT, TSR, and MR. By the way, the correlation of G*/sinδ and depth of the wheeling rutting test was high. The results of our study presented, we suggest that we could replace the speciman’s performance with the mastic rheology for determination of designing drainage asphalt. Addtionally, we could make a proper design method in local of Taiwan.
