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Applied Sciences
Special Issues
Fracture Mechanics of Asphalt Pavement Materials and Structures
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Fracture Mechanics of Asphalt Pavement Materials and Structures

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Civil Engineering".

Deadline for manuscript submissions: 20 January 2025 | Viewed by 1085

Special Issue Editor

Dr. Weimin Song

E-Mail Website
Guest Editor
School of Civil Engineering, Central South University, Changsha 410075, China
Interests: pavement engineering; infrastructure materials; discrete element modelling
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The durability of asphalt pavements is critically affected by asphalt mixture cracking. The focus on cracking resistance has changed asphalt mixtures, as we have moved from the traditional Marshall Mix Design approach to the Superpave Mix Design method, and then to the increasingly popular Balanced Mix Design (BMD) approach, which is now considered an essential aspect of asphalt pavement design. Currently, the adoption of fracture mechanics theory is receiving considerable attention in the evaluation of the cracking resistance of asphalt mixtures. Although existing standards clearly define the methods for testing the fracture performance of asphalt mixtures and pavements at low and intermediate temperatures, there remains significant potential for development in the characterization of asphalt concrete's fracture behavior and for refining the testing methodologies that are based on fracture mechanics. The purpose of this Special Issue is thus to collect the latest research and achievements, and discuss progress in the improved fracture mechanics of asphalt pavement materials and structures, in order to provide guidance for the design of durable asphalt pavements.

Potential topics of interest for this Special Issue include, but are not limited to, the following:

  • Mixture design and optimization, based on fracture mechanics;
  • Fracture testing and the prediction of binder, mixture, and pavement performance using novel testing methods;
  • The fracture performance of asphalt mixture and base materials containing RAP or other solid wastes;
  • Multi-scale simulation of fractures.

Dr. Weimin Song
Guest Editor

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. Applied Sciences 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 2400 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 mixture
  • pavement
  • fracture mechanics

Published Papers (1 paper)

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Research

22 pages, 8627 KiB  
Article
Analysis of the Odor Purification Mechanism and Smoke Release of Warm-Mixed Rubber Asphalt
by Tao Wang, Wenyu Bu, Zhiqiang Cheng, Rui Ma, Shengjia Xie, Zexiang Deng, Yuefeng Zhu and Yue Zhou
Appl. Sci. 2024, 14(13), 5640; https://doi.org/10.3390/app14135640 - 28 Jun 2024
Viewed by 414
Abstract
This study focuses on the common key technologies of “environmentally friendly and resource-saving” asphalt pavement. Reactive asphalt deodorizers react with volatile chemicals with irritating odors in asphalt under high temperature conditions, converting them into stable and non-volatile macromolecules to remove odors and achieve [...] Read more.
This study focuses on the common key technologies of “environmentally friendly and resource-saving” asphalt pavement. Reactive asphalt deodorizers react with volatile chemicals with irritating odors in asphalt under high temperature conditions, converting them into stable and non-volatile macromolecules to remove odors and achieve a deodorizing effect. A goal is to develop clean asphalt pavement materials with the main characteristics of “low consumption, low emissions, low pollution, high efficiency”. In this experimental research, we used gas-emission detection devices and methods to detect and evaluate odor concentration, SO2, NO, volatile organic compounds, and other gases and volatile substances in the production and construction of clean asphalt and mixtures. By combining rheological experiments, mechanical experiments, and other means, this study investigates the effects of odor enhancers on the penetration, ductility, softening point, high-temperature rheological properties, construction, and workability of warm-mix asphalt and mixtures. Furthermore, infrared spectroscopy experiments are used to conduct in-depth research on the odor-enhancing mechanism of odor enhancers. The results indicate that the addition of odor enhancers has little effect on the penetration and softening point of asphalt and maintains the basic performance stability of asphalt. In terms of high-temperature rheological properties and construction workability, the addition of warm-mix agents has a significant impact on the high-temperature failure temperature and rotational viscosity of asphalt, while the influence of deodorizers is relatively small. At higher temperatures, the rotational viscosity increases with the increase in the amount of deodorant added. Functional group analysis shows that the newly added materials have little effect on the essential properties and chemical composition of asphalt. In addition, during the experimental process, it was found that the coupling effect and other chemical reactions between the deodorizing agent and the warm-mixing agent can effectively improve the degradation effect of harmful gases. After the coupling action of deodorant and the warm-mixing agent, the degradation rate of harmful gas can be increased by 5–20%, ensuring the stable performance of asphalt. The performance of powder deodorizing agent is better than that of liquid deodorizing agent, and an increase in the dosage of deodorizing agent will enhance the degradation effect. This study provides an important basis for a deeper understanding of the performance of warm-mix and odorless modified asphalt. Full article
(This article belongs to the Special Issue Fracture Mechanics of Asphalt Pavement Materials and Structures)
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