利用岩石学技术评估NaCl的诱导效应、极端天气条件和西班牙道路上的交通流量

IF 1.1 4区 工程技术 Q3 CONSTRUCTION & BUILDING TECHNOLOGY
A. P. Pérez-Fortes, M. J. Varas-Muriel, Pedro Castiñeiras
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引用次数: 3

摘要

沥青面层最容易受到天气和交通状况的影响,特别是那些冬季维修的道路。因此,深入了解可能破坏这一层的机制对于改进其设计、施工和长期使用是必要的。为此,在西班牙西北部道路上使用的两种沥青混合物在饱和NaCl溶液中进行了耐久性测试(冻融和热应力)。耐久性试验结束后,对试样进行车轮跟踪试验,并用偏振光和荧光显微镜对所得材料进行分析。分析表明,粘结剂-骨料黏结力低是沥青混合料损伤的主要原因。这种破坏主要集中在骨料中,因为粘结剂起到了不透水的作用。因此,NaCl溶液对团聚体的渗透和降解作用迅速而强烈。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Utilización de técnicas petrográficas para evaluar los efectos inducidos del NaCl, condiciones climáticas extremas y el paso del tráfico en las superficies de las carreteras españolas
The asphalt surface layer is the most exposed to weather and traffic conditions on roads, especially those subjected to winter maintenance. Therefore, a deep knowledge of the mechanisms which can damage this layer is necessary to improve its design, construction and long-term use. With this purpose, two types of asphalt mixtures used on roads from NW Spain were subjected to durability tests (freezing-thaw and thermal-stress) with a saturated NaCl solution. After the durability tests, a wheel tracking test was performed on the samples, and the resultant material was analyzed by optical polarized light and fluorescence microscopy. This analysis showed that the binder-aggregate low adhesion was the main responsible of the asphalt mixture damage. This damage was concentrated in the aggregates because the binder acted as an impermeable wall. Consequently, the NaCl solution penetrated and degraded the aggregates quickly and strongly.
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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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