瀝青為石油精鍊之產品，在高溫時呈現高度黏稠之液態狀而在室溫時則為半固態狀，由於瀝青具有防水與黏結之特性，因此主要用於道路與機場鋪面中製作瀝青混凝土時黏結顆粒骨材之膠結劑。近年來由於石油價格的不斷攀升與溫室氣體排放導致全球暖化，世界各國接致力於發展能取代傳統石化能源之永續能源科技例如生質能源。因此本研究之目的在探討以生質油中大分子部分之基礎材料性質及應用於道路工程中取代部分瀝青膠泥之可行性評估。
本研究將評估三種熱裂解生質油：柳杉木屑生質油、咖啡渣生質油與稻桿生質油進行油水分離後成生質膠泥，用咖啡渣及稻桿膠泥以四種不同比例評估(2%、8%、25%、50%)與石油瀝青膠泥（Pen60-70）混配而成之單一生質改質瀝青膠泥的化性、物性及流變性質。以及利用最佳比例混配72%的柳杉木屑及28%的稻稈膠泥後，用三種比例(8%、25%及50%)及兩種比例(0.5%及1%)之介面活性劑混配石油瀝青膠泥之化性及流變行為。
結果顯示三種(稻稈、咖啡渣、柳杉木屑)生質油可以藉由真空蒸餾法去除大量水份。在FTIR試驗中可以觀察出單一生質油中有較多的氧元素。單一稻稈及咖啡渣改質瀝青膠泥的複合剪力摸數(G*)、車轍參數(G*/sinδ)及60℃黏滯度隨著添加比例的增加而逐漸降低。兩種最佳比例之生質改質瀝青膠泥的複合剪力摸數(G*)及車轍參數(G*/sinδ)隨著添加比例的增加而逐漸降低，其中複合剪力摸數(G*)除了100%的生質改質膠泥沒有逐漸降低反而接近石油瀝青膠泥，且只有100%的生質改質膠泥的車轍參數(G*/sinδ)有超過規範最小值1kPa，顯示在100%的生質改質膠泥只有100%可以抵抗車轍，在小比例添加量下介面活性劑的添加並無法增高其車轍參數。

The main objective of this study is to investigate the feasibility of using developed bio-binder (Coffee ground, Rice straw) as replacement/modifier of asphalt binder for construction. In this study, bio-binder was used as asphalt binder modifier (2% and 8%) as well as asphalt binder extender (25% and 50%). Therefore, it is important to investigate the physical, chemical and rheological properties of the developed bio-binder.
Tests results showed that vacuum distillation process can be used to effectively dehydrate the fast pyrolysis bio-oil. Both CGMB and RSMB have higher penetration than Pen 60-70. The chemical composition of both CGMB and RSMB are similar to the vast majority of the Pen60-70 except the bio-oil modified binders are rich in oxygen content. Increasing CG and RS bio-oil content result in decreasing complex shear modulus (G*).

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