國內橡膠瀝青規範依基本物性作為分類依據，無法適當地橡膠瀝青的鋪面性能，仍需建立橡膠瀝青流變行為的預測模式，瞭解橡膠瀝青於不同氣候及交通條件下鋪面性能良窳。本研究選用通過No.30號篩橡膠膠粉與通過No.200橡膠膠粉作為瀝青改質劑，其中，通過No.30號篩橡膠膠粉之橡膠瀝青進行基本物性試驗及韌性試驗，而通過No.200號篩橡膠膠粉之橡膠瀝青進行DSR流變試驗。基本物性及韌性試驗顯示橡膠膠粉能提升基底瀝青的軟化點、黏滯度及回彈率，也會降低其針入度及溫感性；依國內橡膠瀝青規範分類，採用針入度60/70瀝青作為橡膠瀝青的基底瀝青，添加15%橡膠膠粉改質後，能滿足TypeⅠ與TypeⅡ的基本物性要求；另外，橡膠瀝青內含溶脹橡膠無法增加基底瀝青於25℃時的黏結力，但能提升基底瀝青的抗拉拔強度。頻率掃描試驗顯示橡膠膠粉能使基底瀝青的複合剪切模數增加、相位角減少，提升基底瀝青的高溫抗車轍變形能力；CA流變模式、改良型CAM流變模式及多項式流變模式均能擬合出橡膠瀝青的流變行為，然而，橡膠瀝青內存有溶脹橡膠，將導致橡膠瀝青的工作溫度隨橡膠添加量增加而提高，經不同工作溫度分析法得知，相位角法與穩態剪切流動法所獲得的工作溫度均較傳統Brookfield黏滯度法還低，仍需透過試拌與試鋪程序決定；多重應力潛變恢復試驗亦發現橡膠膠粉能提升石油瀝青的抗變形能力與交通承載能力，針入度60/70瀝青經添加15%以上的橡膠膠粉改質後，歸類為能承受中度重載交通量，而針入度20/40瀝青、改質Ⅲ型瀝青及高黏度改質瀝青均歸類為能承受極度重載交通量。

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