Heating asphalt mixtures with microwaves to promote self-healing
Heating asphalt mixtures with microwaves to promote self-healing
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DOI：
10.1016/j.conbuildmat.2012.12.007
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发表时间：
2013-05-01
影响因子：
7.4
通讯作者：
Paez, Antonio
中科院分区：
文献类型：
--
作者：
Gallego, Juan;del Val, Miguel A.;Paez, Antonio
本文介绍了用微波加热沥青混合料的技术可行性以及微波对加热过程中不同变量的影响的研究结果。过去的各种研究已经证实，在沥青混合料休息期间，温度升高会促进自愈。此外，最近还进行了关于通过电磁感应加热沥青混合物的研究：在混合物中加入钢丝绒和石墨添加剂，改善其导电性，从而增加其对电磁感应的敏感性。在这项研究中，加热促进自我修复是用微波实现的。本研究确定的最佳钢丝绒含量约为电磁感应加热推荐量的十倍，这在实践中可能意味着成本的重要降低。此外，微波设备使用的电量比电磁感应产生类似效果所需的电量要少得多。(C) 2013 Elsevier Ltd.版权所有。
This paper presents the results of a research into the technical viability of heating asphalt mixtures with microwaves and how the microwaves influence the heating process of the different variables involved. Various past studies have established that elevated temperatures during rest periods of an asphalt mixture promote self-healing. In addition, recent investigations have been done regarding the heating of asphalt mixtures by means of electromagnetic induction: steel wool and graphite additives where introduced to the mixtures, improving their conductivity and thus increasing their susceptibility to electromagnetic induction. In this study, heating to promote self-healing is achieved with microwaves.The optimal steel wool content established for this study is around ten times less than that recommended for heating by electromagnetic induction, which in practice could mean an important reduction in costs. Additionally, the amount of electricity used by microwave devices is much less than that required to produce a similar effect by electromagnetic induction. (C) 2013 Elsevier Ltd. All rights reserved.