Multi-scale measurement of constitutive viscoelastic properties of bituminous composites considering moisture and deicing conditions

IF 6.5 2区 工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY Case Studies in Construction Materials Pub Date : 2024-04-23 DOI:10.1016/j.cscm.2024.e03175
Peyman Mirzababaei, Fereidoon Moghadas Nejad, Pouria Hajikarimi
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Abstract

The use of salt and chemical deicers can cause significant damage to road infrastructures. This study investigates the impact of different deicers on the viscoelastic properties of mastic and asphalt mixtures, with a focus on characterizing their behavior at varying temperatures and loading frequencies. The samples were subjected to conditioning in solutions of distilled water, salt, Calcium Magnesium Acetate (CMA), and Potassium Acetate (KAc) at 60 °C for 96 h, followed by frequency sweep and dynamic modulus tests at different temperatures and loading frequencies. The results indicate that moisture conditioning with distilled water softens asphalt mixtures and mastic at low loading frequencies, while brine softens the former at low temperatures. Salt's high interaction with mixture aggregates cannot be ignored. CMA's effect on the fatigue behavior of mastic samples is highly dependent on loading frequency, while KAc increases stiffness at intermediate and high temperatures. All the deicers reduce resistance to rutting damage, with CMA having the most negative effect. Both the 2S2P1D and the generalized Maxwell model can well (R2 ≥ 0.90, Se/Sy ≤ 0.35) predict the viscoelastic properties of dry asphalt mixture. However, in the presence of distilled water and the deicers, asphalt mixture viscoelastic properties cannot be predicted according to asphalt mastic characteristics by implementing the homothety method which indicates different effects of distilled water and the deicers on various scales of bituminous composites.

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考虑湿度和除冰条件的沥青复合材料粘弹性组成特性的多尺度测量
使用盐和化学除冰剂会对道路基础设施造成严重破坏。本研究调查了不同除冰剂对胶泥和沥青混合料粘弹性能的影响,重点是分析它们在不同温度和加载频率下的行为特征。样品在 60 °C 的蒸馏水、盐、醋酸钙镁(CMA)和醋酸钾(KAc)溶液中浸泡 96 小时,然后在不同温度和加载频率下进行频率扫描和动态模量测试。结果表明,在低加载频率下,用蒸馏水进行湿度调节可软化沥青混合料和胶泥,而在低温下,盐水可软化前者。盐与混合料集料的高度相互作用不容忽视。CMA 对胶泥样品疲劳行为的影响很大程度上取决于加载频率,而 KAc 在中温和高温下会增加刚度。所有除冰剂都会降低抗车辙破坏的能力,其中 CMA 的负面影响最大。2S2P1D 和广义麦克斯韦模型都能很好地预测干燥沥青混合料的粘弹性能(R2 ≥ 0.90,Se/Sy ≤ 0.35)。然而,在存在蒸馏水和除冰剂的情况下,沥青混合料的粘弹性能无法根据沥青胶结物的特性来预测,这表明蒸馏水和除冰剂对不同尺度的沥青复合材料有不同的影响。
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来源期刊
CiteScore
7.60
自引率
19.40%
发文量
842
审稿时长
63 days
期刊介绍: Case Studies in Construction Materials provides a forum for the rapid publication of short, structured Case Studies on construction materials. In addition, the journal also publishes related Short Communications, Full length research article and Comprehensive review papers (by invitation). The journal will provide an essential compendium of case studies for practicing engineers, designers, researchers and other practitioners who are interested in all aspects construction materials. The journal will publish new and novel case studies, but will also provide a forum for the publication of high quality descriptions of classic construction material problems and solutions.
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