為因應全球氣候變遷，節能減碳為現今社會重視關切的議題，溫拌瀝青混凝土在降低能源消耗和保護環境方面具優越性，但實際運用在國內鋪面工程之經驗略顯不足。本研究使用含3%Sasobit之溫拌瀝青及溫拌瀝青混凝土，比較與一般瀝青及瀝青混凝土之性能差異，以及降低拌合溫度對瀝青混凝土力學性質影響，並改良緻密混凝土配比設計（Densified Mixture Design Algorithm, DMDA），將其與傳統密級配比較，評估DMDA級配運用在瀝青混凝土設計之可行性。研究內容包含瀝青黏結料基本物理性質及流變行為、瀝青混凝土傳統力學試驗、Cantabro磨損試驗、車轍績效試驗。試驗結果顯示，添加溫拌劑增加瀝青黏結料在低溫狀態下之黏滯度，有助於提高瀝青混凝土之力學性質；在高溫狀態下降低黏滯度，瀝青黏結料流動性增加，可降低拌合溫度，發揮溫拌劑之主要功能；溫拌劑對瀝青的影響取決於瀝青黏結料之軟硬程度，較軟瀝青低溫下黏滯度增加較明顯，較硬瀝青在高溫下流動性增加較明顯，改質瀝青則不受溫度影響，其整體黏滯度上升；以較低溫拌合之溫拌瀝青混凝土之力學性質與一般瀝青混凝土相當，證實溫拌劑降低拌合溫度可行性，但當針入度60/70溫拌瀝青混凝土之拌合溫度降至130°C，其抗車轍能力略低於以140°C拌合之溫拌瀝青混凝土；DMDA級配之組成結構與設計前各分料之級配有關，本研究中DMDA級配因三分料級配偏粗，級配曲線偏離傳統密級配規範，在力學性質的表現受黏結料之黏結力影響甚大，黏結力不足的狀況下力學性質較傳統密級配差，黏結力足夠則與傳統密級配表現相當，試驗結果皆符合規範值，DMDA級配具運用在瀝青混凝土設計之潛力；應用績效平衡觀念，以140°C拌合之傳統密級配溫拌瀝青混凝土具備較佳的抗車轍變形能力，抗開裂能力也與傳統熱拌瀝青混凝土相當。

Energy saving and carbon reduction are major issues that in response to global climate change nowadays. The superiority of warm mix asphalt mixtures can reducing energy consumption and protecting the environment, but the application in the pavement project is inexperienced. In this study, warm mix asphalt containing 3% Sasobit were used to compare the different performance with hot mix asphalt and the effect of reduce mixing temperature on the mechanical properties. Improve the densified mixture design algorithm (DMDA) compare with traditional dense gradation and evaluate the feasibility of using DMDA in asphalt mixtures design. The test results show that the addition of Sasobit increase the viscosity of asphalt binder at low temperature, improve the mechanical properties of asphalt mixtures and reduce the viscosity at high temperature, increase the flowability of asphalt binder so that can reduce mixing temperature, this effect plays the main function of Sasobit. The mechanical properties of warm mix asphalt mixtures mixing with lower temperature are similar to hot mix asphalt mixtures. However, when the mixing temperature of the penetration grade 60/70 warm mix asphalt mixtures reduced to 130°C, the rutting resistance is lower than that of the mixtures mixing at 140°C. The performance of DMDA design is influenced by the cohesive force of the asphalt, the mechanical properties are worse than the traditional dense gradation when the cohesive force is not enough. But the test results of DMDA mixtures are in the scope of specification, DMDA design has the potential to be used in asphalt mixture design.

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