The effects of adding nano clay and nano zinc oxide on asphalt cement rheology

Q1 Chemical Engineering
Bara' Al-Mistarehi , Aslam Al-Omari , Madhar Taamneh , Rana Imam , Deya' Al-Deen Khafaja
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引用次数: 5

Abstract

This study aims at investigating the effects on asphalt cement (AC) rheology when adding Nano Clay (NC) and Nano Zinc Oxide (NZnO) compounds. The tested contents of NC were 8%, 10%, and 12%, while those of NZnO were 1%, 2%, and 3% by weight of the AC. The study used AC of 60/70 penetration grade since it is the most commonly used in the Middle East region. Different tests were performed on both the control AC (CAC) and modified AC (MAC), including dynamic shear rheometer (DSR), Softening point (SP), penetration, flash and fire points (FFP), bending beam rheometer (BBR), and viscosity tests. These tests' results demonstrated that the modifiers tend to decrease the penetration values but increase the FFP, viscosity, and SP values. A slight improvement in the rheological properties of AC at high temperatures was also evident from the addition of NC or NZnO. Furthermore, adding either modifier led to significant improvements at low-temperature conditions in the AC's performance and cracking resistance. The optimum modifiers of NC and NZnO were 10% and 3% by weight of the AC, respectively.

纳米粘土和纳米氧化锌的加入对沥青水泥流变的影响
研究纳米粘土(NC)和纳米氧化锌(NZnO)对沥青水泥(AC)流变性能的影响。NC的测试含量分别为8%、10%和12%,NZnO的测试含量分别为AC重量的1%、2%和3%。由于AC在中东地区最常用,因此本研究使用了60/70渗透等级的AC。对对照AC (CAC)和改性AC (MAC)进行了不同的测试,包括动态剪切流变仪(DSR)、软化点(SP)、渗透点、闪点和火点(FFP)、弯曲梁流变仪(BBR)和粘度测试。这些试验结果表明,改性剂倾向于降低渗透值,但增加FFP、粘度和SP值。加入NC或NZnO也明显改善了AC的高温流变特性。此外,添加任何一种改性剂,在低温条件下,AC的性能和抗裂性都有显著改善。最佳改性剂NC和NZnO分别为AC质量的10%和3%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Journal of King Saud University, Engineering Sciences
Journal of King Saud University, Engineering Sciences Chemical Engineering-Fluid Flow and Transfer Processes
CiteScore
12.10
自引率
0.00%
发文量
87
审稿时长
63 days
期刊介绍: Journal of King Saud University - Engineering Sciences (JKSUES) is a peer-reviewed journal published quarterly. It is hosted and published by Elsevier B.V. on behalf of King Saud University. JKSUES is devoted to a wide range of sub-fields in the Engineering Sciences and JKSUES welcome articles of interdisciplinary nature.
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