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Special Issue "Performance-Related Material Properties of Asphalt Mixture Components (Second Edition)"

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A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Construction and Building Materials".

Deadline for manuscript submissions: 20 November 2023 | Viewed by 1973

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Special Issue Editors

Dr. Yao Zhang

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Guest Editor

College of Civil Science and Engineering, Yangzhou University, Yangzhou 225009, China
Interests: pavement structure and performance; multi-scale mechanical response of asphalt pavement; pavement recycling technology; advanced pavement materials
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Dr. Haibo Ding

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Guest Editor

School of Civil Engineering, Jiulidi Campus, Southwest Jiaotong University, Chengdu, China
Interests: pavement cracking; thermoreversible aging; wax in asphalt; performance characterization
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Dr. Yu Chen

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Guest Editor

School of Transportation and Logistics Engineering, Wuhan University of Technology, Wuhan, China
Interests: asphalt pavement; jointed concrete pavement; long-term pavement performance; mechanistic-empirical model; machine learning
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Dr. Meng Ling

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Guest Editor

School of Civil and Transportation Engineering, Beijing University of Civil Engineering and Architecture, Beijing, China
Interests: asphalt pavements; oxidative aging; fracture mechanics; numerical modeling; artificial neural networks
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Special Issue Information

Dear Colleagues,

Each component of an asphalt mixture (e.g., asphalt binder, aggregate, recycled materials and additives) directly affects the performance of the asphalt mixture and asphalt pavement, including fractures, permanent deformation, aging and moisture. Different damage modes are induced by different mechanisms and/or under different environmental conditions, and the contribution of each component to resist different types of damage is different. Therefore, it is vital to accurately evaluate the effects of the fundamental properties of asphalt mixture components and the component interactions that are related to damage performance, which are critical to develop performance models for asphalt mixtures. The assessment of material properties becomes essential when recycled materials and/or additives are involved.

The Special Issue “Performance-Related Material Properties of Asphalt Mixture Components (Second Edition)” aims to publish original research articles to determine the fundamental properties of asphalt mixture components that are related to the distress/performance of asphalt mixtures and asphalt pavements.

Topics include, but are not limited to, the following:

Influence of the viscoelastic properties of asphalt mixture components on performance;
Influence of the morphological properties of asphalt mixture components on performance;
Influence of the chemical properties of asphalt binders on the durability of asphalt pavements;
Evaluation of asphalt binders and aggregate interactions;
Numerical modeling of asphalt mixture components and their interactions;
Environmental effects on asphalt mixture components and performance;
Performance of asphalt mixtures with recycled materials.

It is our pleasure to invite you to submit a manuscript to this Special Issue. Research articles, reviews and communication are all welcome.

Dr. Yao Zhang
Dr. Haibo Ding
Dr. Yu Chen
Dr. Meng Ling
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Materials is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

asphalt binder
asphalt mixtures
asphalt pavement
aggregate
recycled materials
distress
material properties
numerical modelling

Published Papers (5 papers)

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Research

Open AccessArticle

A Fractional Creep Constitutive Model Considering the Viscoelastic–Viscoplastic Coexistence Mechanism

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Materials 2023, 16(18), 6131; https://doi.org/10.3390/ma16186131 - 08 Sep 2023

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Abstract

In order to improve the accuracy and universality of the nonlinear viscoelastic-plastic mechanical behavior characterization method of asphalt mixture, a new criterion for the division of the creep process of materials was established based on the strain yield characteristics, and the coexistence mechanism of Viscoelastic–Viscoplastic strain was proposed in the subsequent yield phase; then, a viscoelastic element was constructed in the form of a parallel connection of two fractional viscoelastic elements based on fractional calculus theory, and its mathematical equations were derived; with novel viscoelastic elements, a constitutive model characterizing the whole creep process of asphalt mixtures was developed and its analytical expression was derived. The laboratory short-term creep test of Cement and Asphalt Mortar (CA mortar) and the simulation test data of asphalt mixtures from the references were used to verify the constitutive model. The results show that the creep constitutive model of asphalt mixture established in this paper has excellent fitting accuracy for different phases of the creep process of asphalt mixture under different stress levels, where the minimum fitting correlation values R² for CA mortar, asphalt mixture (applied to pavement engineering), and asphalt sand are 0.9976, 0.981, and 0.979, respectively. Therefore, this model can be used to provide a theoretical reference for the study of the characterization of the mechanical behavior of asphalt materials. Full article

(This article belongs to the Special Issue Performance-Related Material Properties of Asphalt Mixture Components (Second Edition))

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Open AccessArticle

Aging Behavior and Mechanism Evolution of Nano-Al₂O₃/Styrene-Butadiene-Styrene-Modified Asphalt under Thermal-Oxidative Aging

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Materials 2023, 16(17), 5866; https://doi.org/10.3390/ma16175866 - 27 Aug 2023

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Abstract

The goal of this paper is to analyze the aging behavior and the mechanism evolution of nano-Al₂O₃ (NA)-reinforced styrene-butadiene-styrene (SBS) asphalt under different thermal-oxidative aging conditions. First, NA/SBS-modified asphalt and SBS-modified asphalt with different aging levels were prepared. Second, the viscosity and high temperature rheological performance of the specimens were tested and the property-related aging indexes were calculated and compared. Third, a Fourier transform infrared (FTIR) test of the specimen was conducted and the chemical group-related aging indexes were calculated and analyzed. Fourth, gel permeation chromatography (GPC) was used to analyze the molecular weight of the specimens under different aging levels. Then, an atomic force microscope (AFM) was adopted to analyze the microsurface morphology of different specimens. Finally, correlation analysis between property-related indexes and chemical group indexes was conducted. The results show that NA can enhance the thermal-oxidative aging resistance of SBS asphalt. NA can inhibit the increase in sulfoxide groups and the degradation of the SBS polymer with the increase in aging. NA can slow down the formation of large molecule during the aging process. The degree of change in both the bee structures and micromorphological roughness of NA/SBS asphalt is lower than that of SBS asphalt under different aging levels. Full article

(This article belongs to the Special Issue Performance-Related Material Properties of Asphalt Mixture Components (Second Edition))

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Open AccessArticle

Evaluation of the Adhesion between Aggregate and Asphalt Binder Based on Image Processing Techniques Considering Aggregate Characteristics

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Materials 2023, 16(14), 5097; https://doi.org/10.3390/ma16145097 - 19 Jul 2023

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Abstract

Aggregate–asphalt adhesion plays an important role in the water stability of asphalt concrete. In various test standards of different countries, it is evaluated via the subjective judgment of testers using the boiling water test. The subjective judgment in the test method is detrimental to the accuracy of the adhesion evaluation. However, there is no quantitative evaluation method for the aggregate–asphalt adhesion in existing studies. Moreover, the effects of aggregate shape on adhesion are also not discussed and stipulated. Hence, an innovative method based on the Chinese boiling water test and image processing technique is put forward to quantificationally evaluate the aggregate–asphalt adhesion. Moreover, the effects of aggregate shapes on adhesion are also investigated via the proposed method from a view of aspect ratio and homogeneity. Results show that the peeling of the asphalt membrane on the aggregate surface is more serious as the complexity of the aggregate shape increases after the boiling water tests, while the effect degree gradually decreases. The effect of aspect ratio on the peeling status of asphalt membrane is lower than that of aggregate homogeneity. Full article

(This article belongs to the Special Issue Performance-Related Material Properties of Asphalt Mixture Components (Second Edition))

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Open AccessArticle

Influence of Morphological Characteristics of Coarse Aggregates on Skid Resistance of Asphalt Pavement

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Materials 2023, 16(14), 4926; https://doi.org/10.3390/ma16144926 - 10 Jul 2023

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Abstract

This research aims to improve the durability of skid resistance of asphalt pavement from the perspective of coarse aggregates based on on-site investigation. Firstly, the skid resistance of six representative actual roads was tested during two years by employing the Dynamic Friction Tester and the attenuation characteristics of skid resistance of different types of asphalt pavements were analyzed. Secondly, core samples were drilled onsite and coarse aggregates were extracted from the surface layer of the core samples. The morphological parameters of coarse aggregates were collected by a “backlighting photography” system and three-dimensional profilometer, and the variation rules of angularity and micro-texture of coarse aggregates were investigated. Finally, the correlation between the morphological characteristics of coarse aggregates and the pavement skid resistance was established based on the grey correlation entropy. The research results show that with the increase in service time, the attenuation rate of skid resistance of asphalt pavement gradually slows down; the angularity of coarse aggregates gradually decreases, and the micro-texture on the wearing surface gradually wears away. The grey correlation entropy between all the micro-texture indexes of coarse aggregates and dynamic friction coefficient, as well as between the roundness and skid resistance is more than 0.7, whereas the correlation between other evaluation indicators and the dynamic friction coefficient is poor, indicating that compared with the angularity of coarse aggregates, the micro-texture affects the skid resistance of actual asphalt pavement more greatly. In engineering applications, the use of coarse gradation, coarse aggregates with high roughness or high anti-wear performance can slow down the attenuation of pavement skid resistance, so that the pavement can maintain superior long-term anti-skidding performance. Full article

(This article belongs to the Special Issue Performance-Related Material Properties of Asphalt Mixture Components (Second Edition))

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Open AccessArticle

Mesoscopic Mechanical Properties of Aggregate Structure in Asphalt Mixtures and Gradation Optimization

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Materials 2023, 16(13), 4709; https://doi.org/10.3390/ma16134709 - 29 Jun 2023

Viewed by 325

Abstract

Particle media are widely used in engineering and greatly influence the performance of engineering materials. Asphalt mixtures are multi-phase composite materials, of which coarse aggregates account for more than 60%. These coarse aggregates form a stable structure to transfer and disperse traffic loads. Therefore, knowing how to adjust the structural composition of coarse aggregates to optimize their performance is the key to optimize the performance of asphalt mixtures. In this study, the effects of different roughness and different sizes on the interlocking force and contact force of coarse aggregates were investigated through means of simulation (DEM), and then the formation-evolution mechanism of the coarse aggregate structure and the role of different sizes of aggregates in the coarse aggregate structure were analyzed. Subsequently, the optimal ratio of coarse aggregates was explored through indoor tests, and finally, the gradation of asphalt mixture based on the optimization of fine structure was formed and verified through indoor tests. The results showed that the major model can effectively reveal the role of different types of aggregates in the fine structure and the relationship between the strength of contact forces between them and clarify that the strength of the fine structure increases with the increase in aggregate roughness. Hence, the coarse aggregate structure can be regarded as a contact force transmission system composed of some strong and sub-strong contact forces. Their formation-evolution mechanism can be regarded as a process of the formation of strong and sub-strong contact forces and the transformation from sub-strong contact force to strong contact force. Moreover, the dynamic stability of the optimized graded asphalt mixture was increased by 30%, and the fracture toughness was increased by 26%. Full article

(This article belongs to the Special Issue Performance-Related Material Properties of Asphalt Mixture Components (Second Edition))

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