The Preliminary Study on Rheological Behavior of Polymer Modified Warm Mix Asphalt in Taiwan

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Title:	The Preliminary Study on Rheological Behavior of Polymer Modified Warm Mix Asphalt in Taiwan
Authors:	Widyapsari, Hendriquita Karonsih;Widyapsari, Hendriquita Karonsih
Contributors:	土木工程學系
Keywords:	溫拌瀝青;聚合物;車轍和疲勞;溫拌瀝青;聚合物;車轍和疲勞;Warm Mix Asphalt， polymer， rutting and fatigue.;Warm Mix Asphalt;polymer;rutting and fatigue
Date:	2025-11-26
Issue Date:	2026-03-06 18:15:35 (UTC+8)
Publisher:	國立中央大學
Abstract:	淨零排放是一個被廣泛討論的話題，溫拌瀝青（WMA）預計也將在臺灣路面中得到應用。臺灣氣候多雨、夏季炎熱、交通繁忙，享情況為全臺，帶來了巨大的挑戰。在這種情況下，車轍和鱷魚裂縫是高速公路常見問題。而在瀝青中添加聚合物是解決這些問題的標準方法。許多路面工程關注的是溫拌瀝青混凝土是否可以與多種聚合物混合使用。本研究旨在評估不同聚合物在臺灣溫拌瀝青混凝土中的性能。研究使用了五種添加劑，包括三種聚合物苯乙烯-丁二烯-苯乙烯（SBS）、苯乙烯-乙烯-丁烯-苯乙烯（SEBS）與苯乙烯-異戊二烯-苯乙烯（SIS）。此外，還使用了兩種溫拌瀝青混凝土添加劑：蠟S和化學添加劑Z。所用基質瀝青為AC-20，聚合物添加量為 3-5%、蠟 S 添加量為 3%、化學品 Z添加量為 0.07%。本研究的另一個目標為確定 AC-20、聚合物和溫拌瀝青（WMA）添加劑的最佳組合。將對黏合劑進行物理和流變學測試，以評估上述所有組合。研究結果如下：可知所有聚合物改質瀝青（PMB）皆能提升基質瀝青 AC-20 與溫拌瀝青（WMA）混合料的性能，且性能通常會隨聚合物摻量的增加而改變。流變學測試顯示SBS C 具有最佳綜合性能、而化學添加劑 Z 的改善幅度相對有限。與 AC-20 加蠟 S 相比、所有聚合物與 AC-20 及蠟 S 的組合均可使抗車轍性能提升約 21%，其中 4% SEBS 的組合更可提升至 24%。在抗疲勞測試中，4% SBS C 與 AC-20 加蠟 S 的組合能使疲勞壽命提升約四倍，顯示所有聚合物皆有助於提高承載能力並增強瀝青的抗疲勞特性。然而，儘管 SBS C 加蠟 S 兼具良好的抗車轍與抗疲勞性能，其黏結強度卻有所下降，表示黏結料與骨材界面的黏附力減弱，可能導致更易受潮；化學添加劑 Z 則呈現相反的趨勢，在黏結性能方面表現較佳。綜合性能評估顯示，4% SBS C 加蠟 S 在臺灣高溫潮濕氣候與中、重交通乘載力下具最均衡表現，但黏結強度仍是確保裂縫產生後抗水侵害能力的重要指標。因此，添加聚合物以提升溫拌瀝青的抗車轍與抗疲勞能力具有明顯可行性與研究價值，值得進一步探討。;Net-zero emissions is a widely discussed topic, and warm-mix asphalt (WMA) is also expected to be adopted in Taiwanese pavements. Taiwan′s climate is typically rainy, with hot summers, and heavy traffic presents a significant challenge across the island. Given these conditions, rutting and fatigue are common issues on highways, and adding polymers to bitumen is a standard method to address them. Many pavement engineers are concerned about whether WMA can be used with various polymers together. The objective of this study is to evaluate the performance of WMA with different polymers in Taiwan. Five polymers were used, including three types of Styrene-Butadiene-Styrene (SBS), Styrene-Ethylene-Butylene-Styrene (SEBS), and Styrene-Isoprene-Styrene (SIS). Additionally, two WMA additives, wax S and chemical Z, were applied. The base asphalt used is AC-20; polymers were added at 3-5%, wax S at 3%, and chemical Z at 0.07%. Another goal of the study is to identify the best combinations of AC-20, polymers, and WMA additives. The physical and rheological tests of the binder will assess all combinations. The findings show all PMBs improved both base and WMA binder properties, with performance generally increasing with polymer dosage. Rheological results identified SBS C as the best overall performance, while chemical Z contributed minimal improvement. PMBs increased rutting resistance by up to 21% relative to AC-20 + wax S. Fatigue resistance under standard moderate traffic improved up to fourfold with 4% SBS C + wax S. However, although SBS + wax S improved rutting and fatigue, it reduced tenacity, indicating weaker binder aggregate bonding and potential moisture susceptibility, whereas the chemical additive showed the opposite trend. Overall, 4% SBS C + wax S provided the most balanced performance for Taiwan’s climatic and traffic conditions, though tenacity remains essential for ensuring post cracking moisture durability. Thus, it is feasible to add polymers to improve the rutting resistance and fatigue performance of WMA, and further research is warranted.
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