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首页> 外文期刊>Arabian Journal for Science and Engineering >Investigation of the Impact of Deicer Materials on Thermodynamic Parameters and Its Relationship with Moisture Susceptibility in Modified Asphalt Mixtures by Carbon Nanotube
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Investigation of the Impact of Deicer Materials on Thermodynamic Parameters and Its Relationship with Moisture Susceptibility in Modified Asphalt Mixtures by Carbon Nanotube

机译：碳纳米管改性沥青混合物中脱落剂材料对热力学参数的影响及其与水分敏感性的影响

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摘要

Road maintenance in winter is one of the road engineers’ concerns, especially asphalt specialists. As pavement frosts leadto road closures and accidents, one of the ways to prevent these events is spraying deicer materials on the pavement surface.Therefore, investigation of the impact of the deicer materials on asphalt is essential. So in this study, the effect of deicer materialson themoisture susceptibility of base asphaltmixtures and modified ones by carbon nanotube (CNT)was investigated utilizingpenetration and softening point tests and surface free energy (SFE) concept and dynamic modulus (DM) test. Two commondeicers CaCl_2 and MgCl_2 along with distilledwater (DW) were used. Results indicated that using CNT increased the softeningpoint and reduced the penetration degree of modified bitumens, which increased the penetration index amounts and improvedthe sensitivity of the samples against temperature variations. The SFE results showed that modifying bitumen with CNT ledto an increase in adhesion free energy (AFE). The samples saturated in CaCl_2 and modified with 1% CNT had the highestCFE values. The MgCl_2 solution had less detachment energy, which reduced the energy of the system and stripping occurredsooner. Results of the DM test showed that CNT increased the wet-to-dry DM ratio in saturated conditions with deicermaterials and DW, improving the resistance of the saturated mixtures to moisture. The GMDH model compared to the MVRmethod had higher accuracy and less error in prediction of stripping percentage with the R~2 value of 99.46%.
机译：冬季的道路维护是道路工程师的担忧之一，尤其是沥青专家。随着路面霜冻铅对于道路封闭和事故，防止这些事件的方法之一是在路面表面上喷涂Deicer材料。因此，调查Deicer材料对沥青的影响至关重要。所以在这项研究中，Deicer材料的影响研究了碳纳米管（CNT）基础沥青混合物和改性物的稳定性上的关于碳纳米管（CNT）的敏感性渗透和软化点测试和表面自由能（SFE）概念和动态模量（DM）测试。两个常见使用Deicers CaCl_2和MgCl_2以及蒸馏水（DW）。结果表明，使用CNT增加了软化点并降低改性沥青的渗透程度，增加了渗透指数的量和改善样品对温度变化的敏感性。 SFE结果表明，用CNT LED修改沥青增加无粘合能量（AFE）。在CaCl_2中饱和的样品并用1％CNT修饰最高CFE值。 MgCl_2溶液具有较少的分离能量，这降低了系统的能量和剥离迟早。 DM试验的结果表明，CNT在饱和条件下增加了湿化的DM比例与脱光剂材料和DW，提高饱和混合物对水分的阻力。 GMDH模型与MVR相比方法具有更高的精度和更少的剥离率的误差，R〜2值为99.46％。

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