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Sustainable and Smart Asphalt Materials: Toward Greener Pavement Systems

A special issue of Sustainability (ISSN 2071-1050).

Deadline for manuscript submissions: 31 December 2026 | Viewed by 1412

Special Issue Editor


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Guest Editor
Key Laboratory for Special Area Highway Engineering of Ministry of Education, Chang’an University, Xi’an 710064, China
Interests: high-performance asphalt; energy-saving technologies; use of recycled materials in pavement
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The rapid growth of global infrastructure has increased the demand for high-performance, durable, and environmentally responsible pavement materials. Conventional asphalt binders and polymer modifiers often rely on non-renewable petroleum-based resources, which pose challenges to sustainability and environmental protection. In recent years, bio-based polymers, recycled materials, and smart modification technologies have emerged as promising solutions for developing eco-friendly and long-lasting pavements.

This Special Issue aims to bring together recent advancements and innovative research in the field of sustainable pavement materials, focusing on bio-based binders, recycled additives, self-healing systems, nanomaterial modification, and circular economy applications. Studies addressing the mechanical, rheological, and environmental performance of these materials, as well as life-cycle assessment and durability evaluation, are particularly welcome.

Topics of interest include (but are not limited to) the following:

  • Bio-based and renewable polymer modification of asphalt;
  • Recycling of plastics, rubbers, and industrial waste for pavement use;
  • Self-healing and smart materials for extended service life;
  • Molecular dynamics simulation and surface energy analysis in material design;
  • Environmental impact assessment and circular economy in road construction.

By gathering cutting-edge research in this field, this Special Issue seeks to promote the transition toward sustainable, resilient, and carbon-efficient pavement systems.

We look forward to receiving your valuable contributions.

Prof. Dr. Zengping Zhang
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 250 words) can be sent to the Editorial Office for assessment.

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. Sustainability 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

  • sustainable pavement materials
  • bio-based polymers
  • asphalt modification
  • recycled materials
  • self-healing asphalt
  • circular economy
  • environmental performance

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Published Papers (1 paper)

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Review

40 pages, 8954 KB  
Review
A Review on the Preparation, Properties, and Mechanism of Lignin-Modified Asphalt and Mixtures
by Yu Luo, Guangning Ge, Yikang Yang, Xiaoyi Ban, Xuechun Wang, Zengping Zhang and Bo Bai
Sustainability 2026, 18(3), 1536; https://doi.org/10.3390/su18031536 - 3 Feb 2026
Cited by 1 | Viewed by 1144
Abstract
Lignin, an abundant and renewable biopolymer, holds significant potential for asphalt modification owing to its unique aromatic structure and reactive functional groups. This review summarizes the main lignin preparation routes and key physicochemical attributes and assesses its applicability for enhancing asphalt performance. The [...] Read more.
Lignin, an abundant and renewable biopolymer, holds significant potential for asphalt modification owing to its unique aromatic structure and reactive functional groups. This review summarizes the main lignin preparation routes and key physicochemical attributes and assesses its applicability for enhancing asphalt performance. The physical incorporation of lignin strengthens the asphalt matrix, improving its viscoelastic properties and resistance to oxidative degradation. These enhancements are mainly attributed to the cross-linking effect of lignin’s polymer chains and the antioxidant capacity of its phenolic hydroxyl groups, which act as free-radical scavengers. At the mixture level, lignin-modified asphalt (LMA) exhibits improved aggregate bonding, leading to enhanced dynamic stability, fatigue resistance, and moisture resilience. Nevertheless, excessive lignin content can have a negative impact on low-temperature ductility and fatigue resistance at intermediate temperatures. This necessitates careful dosage optimization or composite modification with softeners or flexible fibers. Mechanistically, lignin disperses within the asphalt, where its polar groups adsorb onto lighter components to boost high-temperature performance, while its strong interaction with asphaltenes alleviates water-induced damage. Furthermore, life cycle assessment (LCA) studies indicate that lignin integration can substantially reduce or even offset greenhouse gas emissions through bio-based carbon storage. However, the magnitude of the benefit is highly sensitive to lignin production routes, allocation rules, and recycling scenarios. Although the laboratory research results are encouraging, there is a lack of large-scale road tests on LMA. There is also a lack of systematic research on the specific mechanism of how it interacts with asphalt components and changes the asphalt structure at the molecular level. In the future, long-term service-road engineering tests can be designed and implemented to verify the comprehensive performance of LMA under different climates and traffic grades. By using molecular dynamics simulation technology, a complex molecular model containing the four major components of asphalt and lignin can be constructed to study their interaction mechanism at the microscopic level. Full article
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