國內現行之瀝青混凝土配合設計規範經過一段時間使用，迄今無任何修改版出現是相當值得商榷，另外，傳統馬歇爾配合設計係屬經驗法則，無法有效評估鋪面服務成效，本研究針對美國本土經過SHRP（Strategic Highway Research Program）的努力所建立起對瀝青混凝土材料更能適應環境變化的新規範「Superpave配合設計法」做進一步探討，以建立適用於台灣地區之模式。 本研究針對瀝青、級配及配合設計法進行深入探討，在瀝青部分，廣泛收集資料並進各種指標之轉換，最後建立本土化之瀝青初步建議規範；在級配方面，收集各地區之粒料特性並探討限制區對瀝青混凝土成效之影響，進一步建立粒料及級配的初步建議規範；在配合設計法方面，首先針對Superpave配合設計法設計參數進行本土化，其中包括交通量估算、現地鑽心、分離回收、重建級配與實驗室模擬，其所有步驟和SHRP建立設計參數步驟相同，然後收集北中南東四個地區粒料，再與傳統馬歇爾配合設計法進行同時進行配合設計，比較其設計結果之差異，然後再藉由瀝青混凝土成效試驗去驗證修正後配合設計法是否可行，該修正後之設計法稱為「台灣鋪面Taipave配比設計法」。 經由本研究成果顯示，「台灣鋪面（Taipave）配比設計法」所設計的瀝青混凝土在抗車轍能力上遠優於傳統馬歇爾配合設計法，在耐久性亦能符合規範，另外，該法亦真實反應台灣地區重載交通的實際狀況與現地成效，最後希望藉由本研究結果能提供國內產官學界在未來對於瀝青混凝土配合設計法進行修正參考使用。 The Superpave design specification provides an Ndesign compaction matrix for compaction of asphalt concrete mixture. Inside the matrix, compaction effort parameters were specified for various traffic levels. Since traffic characteristics and materials available in Taiwan are different from those in the States, it is worthwhile to evaluate the applicability of the Ndesign compaction matrix in Taiwan. General pavement studies on nine test sites in northern Taiwan were performed. Samples were cored, and increases of %Gmm of all test sites were calculated. By assuming the degree of compaction at opening was the same for all sites, %Gmm of cored samples were adjusted. Aggregates recovered from each test site were then remixed according to the original job mix formula, aged, and SGC compacted. Traffic characteristics of each test site were obtained from project installed WIMs and weighted averages of available data in vicinity areas. Meanwhile, traffic volumes were collected and estimated from official surveyed data. Accumulated ESALs of each test site during studied period was then obtained. Correlations of information obtained from the above procedures were performed. It was observed that derived correlations between Nini, Nmax and Ndes are slightly different (differences of respective coefficients are with 10%) from those specified by SHRP. Nonetheless, the gyration efforts specified in the Superpave Ndesign compaction matrix seem too low for situations in Taiwan. High volumes of overloaded trucks may be the reason for high SGC gyrations. More studies on this issue are needed to verify such phenomenon.
