优化沥青乳液性能以稳定道碴

IF 1.1 4区 工程技术 Q3 CONSTRUCTION & BUILDING TECHNOLOGY
G. D’Angelo, D. Presti, N. Thom
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引用次数: 20

摘要

有碴轨道虽然具有经济实用的优点,但由于维修频繁,成本和材料消耗较高。因此,传统的有碴轨道床的更可持续的替代品应该着眼于延长其耐久性,特别是考虑到交通速度和负载的不断增加。在这方面,作者研究了一种由沥青稳定镇流器(BSB)组成的解决方案,旨在用于新轨道床以及加固现有轨道床。本研究介绍了该技术背后的理念,然后重点介绍了该技术发展的具体部分:根据压载水现场条件优化沥青乳液的性能和用量。结果表明,整体沥青稳定通过增强刚度和阻尼性能,提高了压载物对永久变形的抵抗力。更高剂量的沥青乳液、更高的粘度、更快的凝结性能和更硬的基础沥青似乎是实现增强现场性能的最理想条件。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Optimisation of bitumen emulsion properties for ballast stabilisation
Ballasted track, while providing economical and practical advantages, is associated with high costs and material consumption due to frequent maintenance. More sustainable alternatives to conventional ballasted trackbeds should therefore aim at extending its durability, particularly considering ongoing increases in traffic speed and loads. In this regard, the authors have investigated a solution consisting of bitumen stabilised ballast (BSB), designed to be used for new trackbeds as well as in reinforcing existing ones. This study presents the idea behind the technology and then focuses on a specific part of its development: the optimisation of bitumen emulsion properties and dosage in relation to ballast field conditions. Results showed that overall bitumen stabilisation improved ballast resistance to permanent deformation by enhancing stiffness and damping properties. Scenarios with higher dosage of bitumen emulsion, higher viscosity, quicker setting behaviour, and harder base bitumen seem to represent the most desirable conditions to achieve enhanced in-field performance.
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来源期刊
Materiales de Construccion
Materiales de Construccion 工程技术-材料科学:综合
CiteScore
3.20
自引率
9.50%
发文量
38
审稿时长
>12 weeks
期刊介绍: Materiales de Construcción is a quarterly, scientific Journal published in English, intended for researchers, plant technicians and other professionals engaged in the area of Construction, Materials Science and Technology. Scientific articles focus mainly on: - Physics and chemistry of the formation of cement and other binders. - Cement and concrete. Components (aggregate, admixtures, additions and similar). Behaviour and properties. - Durability and corrosion of other construction materials. - Restoration and conservation of the materials in heritage monuments. - Weathering and the deterioration of construction materials. - Use of industrial waste and by-products in construction. - Manufacture and properties of other construction materials, such as: gypsum/plaster, lime%2
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