再生瀝青混凝土是舊有道路鋪面刨除後的刨除料經破碎、篩分後，與新粒料和瀝青混合製備而成。目前，再生瀝青混凝土配比設計主要依據AI-MS2設計方法，該方法假設RAP瀝青貢獻度為100%，並依照Superpave設計流程進行設計。然而，一些研究指出RAP中瀝青並非完全參與拌合。為此，國際上提出考慮瀝青貢獻度的修正最佳瀝青含量方法（COAC），以及基於RAP黑曲線設計之可用性調整混合設計方法（AAMD）。
鑒於許多國家仍採用馬歇爾設計流程進行瀝青混凝土設計，本研究將基於該設計流程，使用相同的設計級配曲線來評估不同再生瀝青混凝土配比設計方法。所評估的設計方法包括：AI-MS2再生瀝青混凝土設計方法、修正最佳瀝青含量方法和可用性調整混合設計方法。研究將比較這些設計方法的馬歇爾試驗值結果，並進一步通過濕式漢堡輪跡試驗、間接開裂試驗以及殘餘強度試驗，評估各設計方法的性能表現。
實驗結果顯示，相同級配曲線於 AI-MS2設計時，能通過馬歇爾設計要求，但應用於AAMD設計時則無法滿足該要求。故在後續的成效試驗中，AAMD設計使用4%空隙率對應的瀝青含量進行實驗。經過比較本研究所有設計組別的結果，基於AI-MS2方法並考慮RAP瀝青部分貢獻額外添加瀝青的COAC設計方法，能夠設計出性能最佳且最接近0%RAP性能的再生瀝青混凝土。然而，根據現行馬歇爾規範，該設計結果未達到規範要求。因此，根據試驗結果，提出修正後的再生瀝青混凝土設計流程。

Reclaimed asphalt concrete is produced by crushing and screening the milled material from existing pavement, then mixing it with virgin aggregates and asphalt binder. Currently, the mix design of reclaimed asphalt concrete is primarily based on the AI-MS2 design method, which assumes a 100% binder contribution from the RAP and follows the Superpave design procedure. However, several studies have pointed out that the binder in RAP does not fully participate in the blending process. In response, alternative approaches have been proposed internationally, including the Corrected Optimum Asphalt Content (COAC) method, which considers partial binder contribution, and the Availability Adjusted Mix Design (AAMD) method, which bases the aggregate structure on the RAP black curve.
Given that many countries still adopt the Marshall mix design method for asphalt mixtures, this study applies the same design gradation to evaluate different reclaimed asphalt concrete mix design methods within the Marshall design framework. The evaluated methods include the AI-MS2 method, the COAC method, and the AAMD method. The study compares the Marshall test results of each design method and further assesses their performance through Hamburg wheel tracking tests, indirect tensile strength tests, and tensile strength ratio tests.
Experimental results indicate that, under the same gradation curve, the AI-MS2 design meets the Marshall design requirements, while the AAMD design fails to satisfy those criteria. Therefore, for subsequent performance testing, the AAMD design adopted the asphalt content corresponding to 4% air voids. After comparing the results of all design groups, the COAC method—based on the AI-MS2 framework but incorporating additional binder to account for partial RAP binder contribution—produced the reclaimed asphalt concrete with the best overall performance, most closely matching that of the 0% RAP mixture. However, according to the current Marshall specification, the COAC design does not fully comply with the specification requirements. Based on the experimental findings, this study proposes a modified reclaimed asphalt concrete mix design procedure.

CNS 15476，「半固態瀝青材料密度試驗法（比重瓶法）」，經濟部標準檢驗局。
CNS 10090，「瀝青/柏油針入度試驗法」，經濟部標準檢驗局。
CNS 2486，「瀝青軟化點試驗法（環球儀）」，經濟部標準檢驗局。
CNS 14248，「乳化瀝青蒸餾殘渣與非牛頓流體瀝青視黏度試驗法（真空毛細管黏度計法）」，經濟部標準檢驗局。
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