本研究採用間接張力強度、回彈模數、伊州彈性指數與開裂等試驗探討老化對添加回收低密度聚乙烯 (RPE) 與橡膠粉 (CR) 瀝青混合料之影響，以AC-20與添加5%苯乙烯-丁二烯-苯乙烯 (SBS) 之瀝青混合料作為對照組。結果顯示添加SBS、RPE和CR有助於抑制老化對間接張力強度之影響，但相同老化程度下各瀝青混合料之間接張力強度差異並不顯著；回彈模數試驗說明添加RPE和CR有助於降低回彈模數受老化之影響，且相同老化程度下添加RPE與CR對回彈模數影響相當大；長期老化對伊州彈性指數與開裂試驗影響顯著，長期老化下添加少量RPE對瀝青混合料伊州彈性指數具有良好發展，過多則效果有限，而開裂試驗結果說明添加CR與少量RPE之混合料在未老化與長期老化階段具有提升抗開裂能力之效用，RPE添加量過高則會失去此效用。本研究瀝青混合料對老化程度或瀝青種類皆對間接張力強度無顯著性；將瀝青種類作為隨機變數較能呈現回彈模數顯著性，老化程度則否；伊州彈性指數與開裂試驗對老化程度和瀝青種類皆較能有效呈現顯著差異。

In this study, indirect tensile strength, resilience modulus, Illinois Flexibility Index and cracking tests were used to explore the effects of aging on the addition of recycled low-density polyethylene (RPE) and rubber powder (CR) asphalt mixtures. AC-20 and added 5% styrene-butadiene-styrene (SBS) asphalt mixture was used as a control group. Adding a small amount of RPE under long-term aging has a good development on the elasticity index of asphalt mixture. If too much, the effect is limited. The results of the cracking test show that the mixture with CR and a small amount of RPE is effective. The non-aging and long-term aging stages have the effect of improving the anti-cracking ability. If the amount of RPE is too high, this effect will be lost.

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