Effects of moisture damage and anti-stripping agents on hot mix asphalt dynamic modulus

IF 3.4 3区工程技术 Q2 CONSTRUCTION & BUILDING TECHNOLOGY

Road Materials and Pavement Design Pub Date : 2020-05-18 DOI:10.1080/14680629.2018.1539408

J. Corrales-Azofeifa, A. Archilla, Fabiola Miranda-Argüello, L. Loría-Salazar

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引用次数: 5

Abstract

This paper presents findings from a comprehensive model of dynamic modulus (|E*|) of mix asphalt estimated with the statistical approaches of joint estimation and mixed-effects. The model consists of a typical sigmoidal master curve using a different parametrization of sigmoidal function, including the effects of binder, voids, gradation, fibres, confinement level, freeze–thaw cycles, and antistripping agents. This paper concentrates on the engineering implications related to the effects of freeze–thaw cycles and antistripping agents. The estimation results indicate that the number of cycles affects three terms of the sigmoid. The contribution of each term changes with reduced frequency but the net effect is always a reduction of log (|E*|) with a given number of cycles for any reduced frequency, with proportionally larger effects at lower reduced frequencies. The effects of freeze–thaw cycles can be completely counteracted by an antistripping agent but it depends on the number of cycles and the frequency.

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湿损和抗剥落剂对热拌沥青动态模量的影响

本文介绍了用联合估计和混合效应的统计方法估计混合沥青动态模量的综合模型。该模型由典型的s型主曲线组成，使用不同的s型函数参数化，包括粘合剂、空隙、级配、纤维、约束水平、冻融周期和防剥离剂的影响。本文主要讨论冻融循环和防剥落剂的工程意义。估计结果表明，周期数对s型曲线的三个项有影响。每个项的贡献随频率降低而变化，但对于任何降低的频率，在给定的周期数下，净效应始终是log (|E*|)的减少，在较低的降低频率下，其影响成比例地更大。冻融循环的影响可以完全抵消抗剥落剂，但这取决于循环的次数和频率。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Road Materials and Pavement Design 工程技术-材料科学：综合

CiteScore

8.10

自引率

8.10%

发文量

105

审稿时长

3 months

期刊介绍： The international journal Road Materials and Pavement Design welcomes contributions on mechanical, thermal, chemical and/or physical properties and characteristics of bitumens, additives, bituminous mixes, asphalt concrete, cement concrete, unbound granular materials, soils, geo-composites, new and innovative materials, as well as mix design, soil stabilization, and environmental aspects of handling and re-use of road materials. The Journal also intends to offer a platform for the publication of research of immediate interest regarding design and modeling of pavement behavior and performance, structural evaluation, stress, strain and thermal characterization and/or calculation, vehicle/road interaction, climatic effects and numerical and analytical modeling. The different layers of the road, including the soil, are considered. Emerging topics, such as new sensing methods, machine learning, smart materials and smart city pavement infrastructure are also encouraged. Contributions in the areas of airfield pavements and rail track infrastructures as well as new emerging modes of surface transportation are also welcome.