Laboratory Investigation Wax-Based Warm Mix Binder

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题名:	Laboratory Investigation Wax-Based Warm Mix Binder
作者:	拉瑪瓦提;Rahmawati, Fajar
贡献者:	土木工程學系
关键词:	Sasobit;聚乙烯蠟;溫拌瀝青;流變學;車轍;疲勞;Sasobit;Polyethylene wax;Warm mix asphalt;Rheological;Rutting;Fatigue
日期:	2023-01-18
上传时间:	2024-09-19 14:09:47 (UTC+8)
出版者:	國立中央大學
摘要:	瀝青混合料的生產受到限制，以節約資源和減少污染。熱拌瀝青 (HMA) 技術在瀝青混合料生產過程中消耗大量能源。然而，溫拌瀝青 (WMA) 可能會通過降低混合和壓實溫度來降低守恆能量。長期以來，人們對將蠟作為瀝青粘合劑中的流變增強劑有很大興趣。 Sasobit (S) 和聚乙烯 (PE) 蠟可降低粘溫並提高可加工性。在這項研究中，來自一家台灣公司的 S 和 PE 與 1% - 5% 的不同百分比的粘合劑一起使用。在兩種不同速度下進行機械混合：1000 rpm 和 2000 rpm 用於查看基於粘合劑流變特性的混合方法的效果。為了確定用於溫拌粘合劑的蠟添加劑的最佳百分比，進行了流變學和化學測試。該測試包括以下參數：針入度、延展性、軟化點、粘度、動態剪切流變儀 (DSR)、車轍、疲勞和用於化學檢測的薄層色譜/火焰離子化檢測 (TLC-FID)。根據流變學測試，添加更多的蠟添加劑可以提高粘合劑的剛度，同時降低其在高溫下的粘度。與 1000 rpm 相比，在 2000 rpm 下混合具有更大的降低，這在降低生產和混合溫度方面具有顯著優勢。綜合各項研究的流變性能，PE-G 的性能可與 S 相媲美。使用 3%的蠟添加劑是台灣溫拌粘合劑的理想用量。它能夠滿足台灣高溫路面的施工標準（PG70）。但是，建議使用多種蠟添加劑對瀝青混凝土樣品進行測試，以獲得更好的性能解釋。;Asphalt mix production has been limited to conserve resources and reduce pollution. Hot mix asphalt (HMA) technologies consume a significant amount of energy during asphalt mix production. However, warm-mix asphalt (WMA) might decrease the conserved energy by lowering the mixing and compaction temperature. There has long been a lot of interest in the incorporation of waxes as the rheological enhancer in binders of asphalt. Sasobit (S) and Polyethylene (PE) waxes reduce viscosity-temperature and improve workability. In this study, S and PE from a Taiwan company were used with varying percentages of 1% - 5% by mass of binder. While mechanical blending at two different speeds: 1000 rpm and 2000 rpm was utilized to see the effect of the blending method based on the binder′s rheological characteristics. In order to identify the optimal percentage of wax additives for warm mix binders, rheological and chemical tests were carried out. The test includes the following parameters: penetration, ductility, softening point, viscosity, dynamic-shear rheometer (DSR), rutting, fatigue, and thinlayer chromatography/flame ionization detection (TLC-FID) for chemical detection. According to rheological testing, adding more wax additives could improve the stiffness of the binder while lowering its viscosity at high temperatures. Mixing at 2000 rpm having a greater decrease compared to 1000 rpm which has a significant benefit in lowering production and mixing temperatures. Based on all the rheological performance in study research, the performance of PE-G is comparable to S. The use of 3% wax additives is the ideal amount to utilize in Taiwan′s warm mix binder. It is able to fulfill Taiwan′s construction criteria for pavements in hot temperatures (PG70). However, it is recommended to conduct asphalt concrete samples using several wax additives for better performance interpretation.
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