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Advanced Asphalt Pavement Materials and Design
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Advanced Asphalt Pavement Materials and Design

A special issue of Buildings (ISSN 2075-5309). This special issue belongs to the section "Building Materials, and Repair & Renovation".

Deadline for manuscript submissions: 30 September 2024 | Viewed by 2518

Special Issue Editors

Dr. Song Xu

E-Mail Website
Guest Editor
College of Civil Engineering, Fuzhou University, Fuzhou 350116, China
Interests: rejuvenation of reclaimed asphalt pavement (RAP); nano-material or polymer modified asphalt; aging and anti-aging of asphalt material; performance evaluation and characterization of asphalt
Dr. Hongyan Ma

E-Mail Website
Guest Editor
College of Civil Engineering, Fuzhou University, Fuzhou 350116, China
Interests: roadbed settlement mechanisms; clay damage mechanism; asphalt pavement durability; multi-scale roadbed damage behavior; road material recycling technology; multi-physical field freeze–thaw mechanism; interface damage mechanics; frost heave modeling
Prof. Dr. Dongliang Kuang

E-Mail Website
Guest Editor
School of Materials Science and Engineering, Chang'an University, Xi'an 710064, China
Interests: preparation, modification and application of organic gelling materials; high-performance and low carbonization of materials for transportation infrastructure
Dr. Zongwu Chen

E-Mail Website
Guest Editor
Faculty of Engineering, China University of Geosciences (Wuhan), Wuhan 430074, China
Interests: solid waste recycling in civil engineering materials; asphalt and asphalt concrete; life cycle assessment
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Asphalt is a dark-brown to black, highly viscous, hydrocarbon produced from the distillation of petroleum residue. This distillation can occur naturally, resulting in asphalt lakes, or occur in a petroleum refinery using crude oil. In hot mix asphalt (HMA), asphalt functions as a waterproof, thermoplastic,  and viscoelastic adhesive. By weight, asphalt generally accounts for between 4 and 8 percent of asphalt mixture and makes up about 25–30 percent of the cost of an HMA pavement structure, with changes depending upon the type and quantity. As one of the most widely used materials in pavement construction, asphalt has witnessed remarkable progress in recent decades, especially in the testing and evaluation methods and the development of advanced asphalt-based materials. These achievements have significantly facilitated durability and service performance, thereby assisting humanity to reach sustainable pavement construction.

Although studies involving asphalt pavement have made remarkable achievements over the preceding decades, there remain many issues that are worth investigating further investigations, such as the performance enhancement, functional modification, material characterization, high durability, structure design, construction technology, computer simulation, and so on. Studying these related topics can further improve the service quality of life, lower asphalt the environmental impact, reduce the life-cycle cost and support the sustainable development of road engineering.

The primary aim of this Special Issue is to explore and share recent progress and novel trends in the theory and application of novel asphalt pavement materials and design. Original articles and reviews addressing innovative developments and valuable contributions to the advanced asphalt pavement design, material, characterization, construction, etc., are welcomed.

Dr. Song Xu
Dr. Hongyan Ma
Prof. Dr. Dongliang Kuang
Dr. Zongwu Chen
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. Buildings is an international peer-reviewed open access monthly 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

  • new approach to asphalt (mixture) characterization
  • functional modified asphalt (mixture)
  • asphalt (mixture) durability
  • asphalt (mixture) rejuvenation
  • multiscale morphological observation of asphalt (mixture)
  • multiscale stress and strain range behaviors of asphalt-based material
  • nondestructive testing for asphalt mixture/pavement
  • sustainable asphalt pavement
  • low environmental impact asphalt pavement
  • life-cycle assessment of asphalt pavement
  • materials for pavement subgrade
  • novel structure design methods for asphalt pavement

Published Papers (4 papers)

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Research

15 pages, 2473 KiB  
Article
Experimental Study on Anti-Aging Effect of Asphalt Binder Liquid Anti-Aging Agent
by Chunping Fu, Zhen Wang, Shanglin Song, Xiupeng Yao, Fangliang Wang, Lewen Wei and Meng Guo
Buildings 2024, 14(4), 1023; https://doi.org/10.3390/buildings14041023 - 06 Apr 2024
Viewed by 296
Abstract
During its service life, asphalt pavement is affected by environmental factors such as heat, light, oxygen and moisture. The asphalt binder ages, resulting in a decrease in the performance of the asphalt pavement. Therefore, the development and application of an asphalt anti-aging agent [...] Read more.
During its service life, asphalt pavement is affected by environmental factors such as heat, light, oxygen and moisture. The asphalt binder ages, resulting in a decrease in the performance of the asphalt pavement. Therefore, the development and application of an asphalt anti-aging agent is of great significance. In this paper, the road performance of the developed asphalt binder liquid anti-aging agent was verified in the two scales of asphalt binder and asphalt mixture, respectively. Firstly, a simple aging test method was proposed using needle penetration as the evaluation index. The aging time of the simple aging method was determined to be 20 h. Secondly, the addition of anti-aging agents improved the low-temperature performance of the asphalt binder and had a less adverse effect on the high-temperature performance. The test values of needle penetration and the ductility of the asphalt binder increased and the values of the softening point decreased. And the road performance of the anti-aging asphalt mixture basically met the specification requirements. The addition of the anti-aging agent improved the low-temperature performance of the aged asphalt mixture by 16%, which is of great significance for improving the service life of asphalt pavement. Full article
(This article belongs to the Special Issue Advanced Asphalt Pavement Materials and Design)
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18 pages, 2484 KiB  
Article
Performance Study on Laterite Road Base Stabilised with Emulsions Incorporating Biochar
by Andrew Chilufya, David Gangell, Mohamed A. Shahin and Hayder H. Abdullah
Buildings 2024, 14(3), 575; https://doi.org/10.3390/buildings14030575 - 21 Feb 2024
Viewed by 591
Abstract
This study explores the utilisation of biochar as an innovative and sustainable additive to emulsions for stabilising laterite road base material in pavements, with the environmental benefit of sequestering atmospheric carbon and stable form storing. A diverse range of design mixtures for the [...] Read more.
This study explores the utilisation of biochar as an innovative and sustainable additive to emulsions for stabilising laterite road base material in pavements, with the environmental benefit of sequestering atmospheric carbon and stable form storing. A diverse range of design mixtures for the treated road base material with the proposed biochar–emulsion binder was developed for experimental validation and subsequent steps encompassed an array of laboratory tests to scrutinise the engineering attributes of the mixtures. The tests were selected to assess various properties such as unconfined compressive strength, tensile strength, resilient modulus, flexural modulus, fatigue life, and deformation characteristics. To gain practical insights from real-world conditions, two field trials were also conducted to evaluate the performance of the stabilised road base. The findings revealed that a design mix incorporating 5% biochar and 6% emulsion delivered an average unconfined compressive strength (UCS) of 1.5 MPa, which adheres to the standard UCS range for cemented lightly bound base course material. The optimal ratio of biochar to emulsion was identified as 1:1.6, which delivered a higher resilient modulus value than did the minimum stipulated by the literature for average daily traffic in the first year of design. As the temperature rose, the stabilised laterite base exhibited a reduction in its flexural modulus; however, it demonstrated minimal susceptibility to fluctuations in frequency. The deformation observed in the wheel-tracking tests for mixtures of the optimum biochar-to-emulsion ratio was less than 1 mm, which is remarkably lower than the maximum requirement outlined in the literature (i.e., 15 mm). Furthermore, visual inspection post-testing detected minimal cracking. These findings indicate that the integration of biochar and emulsion in the construction of road pavements is a promising technique that could contribute to carbon sequestration and climate change mitigation without sacrificing pavement performance. The successful field trials provided further evidence of the feasibility of this novel technique. Full article
(This article belongs to the Special Issue Advanced Asphalt Pavement Materials and Design)
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19 pages, 2822 KiB  
Article
Performance and Lifecycle of Hot Asphalt Mix Modified with Low-Percentage Polystyrene and Polybutadiene Compounds
by Matúš Kozel, Ľuboš Remek, Ján Mikolaj, Juraj Mušuta, Juraj Šrámek and Grzegorz Mazurek
Buildings 2024, 14(2), 389; https://doi.org/10.3390/buildings14020389 - 01 Feb 2024
Viewed by 507
Abstract
The paper investigates the improvement of bitumen mixture fatigue resistance and the rutting performance by using a specific low percentage of a styrene–butadiene–styrene (SBS) polymer, which contains polystyrene and polybutadiene compounds. A Fourier transform infrared (IR-FT) spectroscopy of the SBS polymer used in [...] Read more.
The paper investigates the improvement of bitumen mixture fatigue resistance and the rutting performance by using a specific low percentage of a styrene–butadiene–styrene (SBS) polymer, which contains polystyrene and polybutadiene compounds. A Fourier transform infrared (IR-FT) spectroscopy of the SBS polymer used in following test was carried out to ascertain the polybutadiene and polystyrene compound ratio, which may affect the modificant properties. Unmodified, low-percentage modified SBS, and common polymer-modified bitumen (PMB) as a reference were tested to ascertain the properties, fatigue resistance, and the rutting performance. The test results of the low-percentage modification with SBS are compared against unmodified mixtures and standard PMB mixtures. Finally, a simulation of the practical application was performed using the HDM-4 software (version 2.0), where the material research findings, with an emphasis on the rutting performance, were translated into the pavement performance with a varying binder course layer under simulated traffic conditions. Lifecycle analysis, with a focus on emissions production (CO2, SO2, and NOx) during pavement operation, was conducted for pavements with unmodified, low-percentage modified SBS, and standard PMB binder courses. The lifecycle analysis showed that a 3% modification of the binder course with the SBS polymer can extend the rutting parameter pavement lifecycle by approximately 34.5%, which is about half of the extension provided by the standard PMB modification. The resulting improvement in the pavement serviceability translated to a 9% reduction in CO2 and SO2 emissions and a 7.2% reduction in NOx emissions over a 20-year period. Full article
(This article belongs to the Special Issue Advanced Asphalt Pavement Materials and Design)
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18 pages, 3597 KiB  
Article
Study on Thixotropy of Mastic Asphalt Binder and Asphalt Mastic
by Shunxian Zhang, Chuanxi Luo, Zhiyong Huang and Jian Li
Buildings 2023, 13(9), 2380; https://doi.org/10.3390/buildings13092380 - 19 Sep 2023
Cited by 1 | Viewed by 566
Abstract
In order to analyze the thixotropy of mastic asphalt concrete during the mixing process, the factors affecting the thixotropy of mastic asphalt binder and asphalt mastic are studied, and the measures to shorten the mixing time of mastic asphalt mixture are given. The [...] Read more.
In order to analyze the thixotropy of mastic asphalt concrete during the mixing process, the factors affecting the thixotropy of mastic asphalt binder and asphalt mastic are studied, and the measures to shorten the mixing time of mastic asphalt mixture are given. The dynamic viscosity of mastic asphalt binder and asphalt mastic with time and shear rate is obtained via the step frequency method, and the thixotropic constitutive models of mastic asphalt binder and asphalt mastic are constructed by structural dynamics model, exponential equation, and extended exponential equation respectvely. The improved time thixotropy index is used to analyze the effects of asphalt type, asphalt–aggregate ratio, filler type, heating temperature, and shear rate, and the laws of various factors affecting the thixotropy of mastic asphalt binder and asphalt mastic are obtained. The research shows that the extended exponential model can better characterize the thixotropy of mastic asphalt binder and asphalt mastic under different shear rates. When the amount of lake asphalt or cement is increased, the viscosity of the system and the mixing time to reach a steady viscosity increases; that is, the mixing time needs to be increased. Increasing shear temperature does not change the time parameter to reach steady viscosity; that is, it cannot shorten mixing time. When the shear rate is increased, the time for the system to reach the steady viscosity will be shortened; that is, the time for mixing the mixture can be shortened. Full article
(This article belongs to the Special Issue Advanced Asphalt Pavement Materials and Design)
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