热固性改性剂在道路桥梁环氧沥青路面布置中的应用对沥青性能的影响

Vladimir Zelenovsky, A. Onyshchenko
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引用次数: 0

摘要

桥梁上沥青混凝土路面层破坏的机制之一,特别是具有正交各向异性板的桥梁,是巨大的最终变形,这对整个桥梁结构的长期使用性能产生负面影响。改性沥青混凝土混合料与环氧组分可能是非常相关的,以消除最终变形,由于其热活性性质。本文认为环氧树脂及其硬化剂是环氧-沥青混凝土复合体系的主要组成部分,在确定温度对环氧树脂硬化速率影响的基础上,根据生产环氧-沥青混凝土混合料的粘结剂选择的结果,以及在沥青中不同环氧组分含量的环氧粘结剂的可行性的研究结果,本文讨论了其硬化的方法和机理。本描述中提到的研究从实用的角度来看也是非常有用的,因为由于获得了确定环氧沥青混凝土粘度的结果,根据其组成中环氧组分的含量,可以确定其排列的允许时间,同时考虑到可能的特征。为了在道路桥梁上使用环氧沥青混凝土涂料,通过进行研究,确定了环氧组分作为热固性改性剂的引入对沥青性能的影响。研究方法和已经进行的研究获得的结果将允许确定使用某些成分制备环氧沥青混凝土混合物的可能性及其可行性。考虑到温度的变化和环氧组分的含量,这将使混合液的最佳选择成为可能。关键词:环氧沥青混凝土,环氧树脂,桥梁涂料,沥青改性,沥青性能,改性沥青活力
本文章由计算机程序翻译,如有差异,请以英文原文为准。
INFLUENCE OF THERMOSETTING MODIFIERS ON THE PROPERTIES OF BITUMEN FOR THEIR APPLICATION AT THE ARRANGEMENT OF EPOXY ASPHALT PAVEMENTS ON ROAD BRIDGES
One of the mechanisms of the destruction of asphalt concrete pavement layers on bridges, especially with an orthotropic slab, is a large final deformation, which negatively affects the long-term operational performance of the entire bridge structure. Modification of the asphalt concrete mixture with epoxy components can be very relevant to eliminate the final deformation due to their thermoreactive nature. In this review, epoxy resin and its hardener are considered as the dominant component of the epoxy-asphalt concrete composite system, and based on the results of studies on determining the effect of temperature on the rate of hardening of epoxy resin, on the results of the selection of a binder for the production of epoxy-asphalt concrete mixtures and establishing the viability of an epoxy binder with different contents of epoxy components in bitumen, this article discusses the methods and mechanism of its hardening. The research mentioned in this description is also very useful from a practical point of view, because thanks to the obtained results of determining the viscosity of epoxy-asphalt concrete, depending on the amount of epoxy components in its composition, it is possible to determine the permissible time for its arrangement, taking into account possible features. With the aim of using epoxy-asphalt concrete coatings on road bridges and thanks to the conducted studies, the influence of the introduction of epoxy components as thermosetting modifiers on the properties of bitumen was determined. The research methodology and the obtained results of already conducted research will allow to determine the possibility of using certain components for the preparation of epoxy-asphalt concrete mixtures and their viability. It will make it possible to make an optimal selection of the mixture, taking into account the variation of temperatures and the content of epoxy components. Key words: epoxy asphalt concrete, epoxy resin, coating on bridges, bitumen modification, bitumen properties, viability of modified bitumen.
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