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Impacts of Maltene on the Wettability and Adhesion Properties of Rejuvenated Asphalt Binder
Arabian Journal for Science and Engineering ( IF 2.9 ) Pub Date : 2021-03-01 , DOI: 10.1007/s13369-021-05413-0
Zaid Hazim Al-Saffar , Haryati Yaacob , Mohd Khairul Idham Mohd Satar , Ramadhansyah Putra Jaya

In recent years, the use of reclaimed asphalt pavement (RAP) has gained much attention and is widely accepted. However, the rejuvenating agents which are usually used to reduce the rigidity of the aged asphalt are subjected to diverse climate circumstances. The present work used maltene as a rejuvenator to investigate several measurements regarding stripping failure. The evaluation of wettability and work of adhesion (WA) was assessed using the sessile drop method. Meanwhile, asphalt and asphalt-water aggregate systems were tested for acid and water resistance using chemical and water immersion tests. Next, atomic force microscopy (AFM) was used to evaluate the changes in the microstructures of the asphalt binders. The experimental results revealed that the ideal percentages of maltene which should be added to 30% and 50% aged asphalt were 8% and 16%, respectively. Meanwhile, the wettability, WA and resistance to stripping differed depending on the percentage of aged asphalt in the blend. However, the inclusion of maltene has improved samples containing high percentages of aged asphalt. On the other hand, the resistance to boiling water containing acid decreased slightly with the addition of maltene. Nevertheless, all the rejuvenated samples exhibited better results than virgin asphalt. Moreover, the AFM results were in line with the observations, suggesting the suitability of maltene for the functional application of pavement.



中文翻译:

麦芽烯对再生沥青粘合剂的润湿性和附着力的影响

近年来,再生沥青路面(RAP)的使用已引起广泛关注并被广泛接受。但是,通常用于降低老化沥青的刚度的再生剂经受多种气候条件的影响。目前的工作使用麦芽烯作为再生剂来研究关于剥离失败的几种测量方法。润湿性和附着力的评估(W A)使用无座落座法进行评估。同时,使用化学和水浸测试对沥青和沥青-水集料系统的耐酸和耐水性进行了测试。接下来,使用原子力显微镜(AFM)评估沥青粘合剂的微观结构变化。实验结果表明,应添加到30%和50%的老化沥青中的麦芽烯的理想百分比分别为8%和16%。同时,润湿性W A并且抗剥落性取决于混合物中老化沥青的百分比。但是,包含麦芽烯可以改善样品,其中包含高百分比的老化沥青。另一方面,通过添加麦芽烯,对含有酸的沸水的耐性稍微降低。尽管如此,所有再生的样品都比原始沥青表现出更好的结果。此外,原子力显微镜的结果与观察结果一致,表明麦芽烯适合于人行道的功能性应用。

更新日期:2021-03-01
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