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Advances in Asphalt Materials (Second Volume)
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Advances in Asphalt Materials (Second Volume)

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

Deadline for manuscript submissions: 20 May 2024 | Viewed by 4108

Special Issue Editor

Prof. Dr. Marek Iwański

E-Mail Website
Guest Editor
Faculty Civil and Architectural Engineering, Kielce University of Technology, Kielce, Poland
Interests: bitumen; foamed bitumen; cold recycling; rheology; asphalt materials
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The need to maximise the durability and safety of road pavements is widely recognized. This can be achieved via improving asphalt properties and developing new types of asphalt for pavement construction. Special attention is paid to the environmental sustainability of asphalt pavement. Asphalt can be modified via the incorporation of a range of materials, such as polymers, rubber wax, F-T synthetic wax, and natural asphalt, or the addition of various chemical additives, especially low-viscosity ones. The effectiveness of these measures is assessed with increasingly advanced rheological tests of the binder, which are capable of predicting its behaviour over pavement service life. It is critical that we continue to develop and constantly improve new types of bituminous mixtures produced with binders modified with low-viscosity additives or zeolite-foamed asphalt at lower mixing and paving temperatures (e.g., half-warm mix asphalt). From a sustainability perspective, the half-warm mix asphalt technologies that rely on water-foamed asphalt and enable mixture production at a temperature of approximately 100 °C are particularly relevant. In addition to a long service life, modern asphalt pavements are required to have an adequate roughness level to ensure traffic safety. Asphalt materials such as porous asphalt or special types of SMA mixtures meet this criterion. Progressive enhancement of asphalt’s material properties is accompanied by advances in diagnostic methods that verify the effectiveness of the material solutions applied.

Prof. Dr. Marek Iwański
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. 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

  • modified bitumen
  • rheology
  • asphalt materials
  • pavement diagnostics

Related Special Issue

Published Papers (5 papers)

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Research

15 pages, 3349 KiB  
Article
Study on the Combined Effect of Municipal Solid Waste Incineration Bottom Ash and Waste Shingle in Hot Mix Asphalt
by Kyungwon Park, Behnam Golestani, Boo Hyun Nam, Juan Hou and Jongwan Eun
Materials 2024, 17(1), 46; https://doi.org/10.3390/ma17010046 - 21 Dec 2023
Viewed by 768
Abstract
This study investigated the positive effect of the combined use of recycled asphalt shingles (RASs) and municipal solid waste incineration (MSWI) bottom ash (B.A.) in asphalt concrete, which contributes to enhanced sustainability in pavement engineering. In addition, unlike traditional approaches that employ individual [...] Read more.
This study investigated the positive effect of the combined use of recycled asphalt shingles (RASs) and municipal solid waste incineration (MSWI) bottom ash (B.A.) in asphalt concrete, which contributes to enhanced sustainability in pavement engineering. In addition, unlike traditional approaches that employ individual recycling material in hot mix asphalt (HMA), the combined use of the two waste materials maximizes the mechanical performance of the asphalt mixture. The addition of RAS (with 30–40% aged binder) as an additive generally enhances the strength/stiffness of the asphalt mixture. The high porosity/absorption of MSWI BA results in an additional amount of liquid asphalt binder in the mixture. As an admixture, RAS could supply the additional asphalt binder in the mixture when MSWI BA is used as an aggregate replacement. This research was conducted in two phases: (1) to examine the effect of MSWI BA alone and its optimal asphalt content (OAC), and (2) to assess the combined effect of B.A. and RAS in HMA. Multiple laboratory testing methods were employed for the mechanical performance investigation, including the Marshall stability test, rutting test, and indirect tensile test. The testing results show that the 20% B.A. replacement exhibits the best performance and that it requires an additional asphalt binder of 1.1%. For the combined use of MSWI BA and RAS, 5% RAS shows the best mechanical performance. All mixtures that contain the B.A. and RAS show greater strength than the control specimen (regular HMA). Full article
(This article belongs to the Special Issue Advances in Asphalt Materials (Second Volume))
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19 pages, 4348 KiB  
Article
The Combined Effects of Additives on the Conventional and High-Temperature Performance Properties of Warm Mix Asphalt Binders
by Anna Chomicz-Kowalska, Joanna Bartos, Krzysztof Maciejewski and Mateusz M. Iwański
Materials 2023, 16(24), 7648; https://doi.org/10.3390/ma16247648 - 14 Dec 2023
Viewed by 580
Abstract
The present study investigates the effects of the simultaneous use of two additives, an organosilane warm mix asphalt (WMA) agent and a grade-bumping polyolefin compound, on the conventional and high-temperature performance properties of a paving grade 50/70 bitumen and a polymer-modified 45/80-55 bitumen. [...] Read more.
The present study investigates the effects of the simultaneous use of two additives, an organosilane warm mix asphalt (WMA) agent and a grade-bumping polyolefin compound, on the conventional and high-temperature performance properties of a paving grade 50/70 bitumen and a polymer-modified 45/80-55 bitumen. The WMA agent and polyolefin additive were introduced to the binders at rates of up to 0.3% and 2%, respectively. The base asphalt binders and their blends with the additives were tested before and after aging in a rolling thin film oven test at a temperature of 143 °C. The effects of the investigated additives were found to be dependent on the type of base binder and its aging state. It was generally observed that the WMA additive decreased the performance of the asphalt binders and limited the effects of the other additive, which increased the high-temperature stiffness and non-recoverable compliance of the blends. This interaction amounted to as much as an approx. 20% decrease in high-temperature stiffness and non-recoverable compliance of the binders. The additives caused a small increase in the elasticity of the binders and improved their creep performance when measured in multiple stress creep recovery tests. Full article
(This article belongs to the Special Issue Advances in Asphalt Materials (Second Volume))
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23 pages, 37211 KiB  
Article
Mechanism and Development of Thermo-Rheological Properties of Asphalts Modified by Reactive Polymer Systems
by Martin Jasso, Juan Sebastian Perez Jaimes and Esteban Felipe Tellez Vega
Materials 2023, 16(20), 6631; https://doi.org/10.3390/ma16206631 - 10 Oct 2023
Viewed by 682
Abstract
The new class of reactive polymers is designed to modify asphalt through chemical reactions with asphalt components. The complexity of such systems and the long experience with thermoplastic elastomers as well as with some other “classical” modifiers, and to a degree that our [...] Read more.
The new class of reactive polymers is designed to modify asphalt through chemical reactions with asphalt components. The complexity of such systems and the long experience with thermoplastic elastomers as well as with some other “classical” modifiers, and to a degree that our present testing methods and even specifications revolve around these materials, might obscure the fact that we are dealing with rather different modification systems and possibly with new emerging asphalt paving technologies. Our present work attempted to compare two different reactive polymer systems with the “classical” system which uses thermoplastic elastomer. The impact of reactive polymer systems on asphalt was studied through material properties manifested by specification tests and through the development of thermo-rheological properties in linear and non-linear viscoelastic regions. As expected, the behavior of reactive polymeric systems with different chemistries also differed among themselves. The available results showed that the reactive groups of polymers react with polar components of asphalt leading to higher stiffness at elevated pavement temperatures and differing impact on low temperature properties. The data point to a significantly improved resistance to plastic deformation of pavement in the case of reactive polymers, despite the fact that elastic recovery-based specification tests failed to identify this improvement. Full article
(This article belongs to the Special Issue Advances in Asphalt Materials (Second Volume))
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23 pages, 7553 KiB  
Article
Characterization of Hot-Applied Joint Sealants and Their Components in Terms of Their Chemical Composition and Basic Performance Properties
by Justyna Stępień and Eva Remišová
Materials 2023, 16(19), 6490; https://doi.org/10.3390/ma16196490 - 29 Sep 2023
Viewed by 651
Abstract
Hot- and cold-applied joint sealants are materials commonly used for the surface repairs of the upper layers of asphalt or concrete road surfaces. Our investigations covered six hot-applied joint sealants, classified as the high-extension type N1 (elastic) or low-extension type N2 (normal), in [...] Read more.
Hot- and cold-applied joint sealants are materials commonly used for the surface repairs of the upper layers of asphalt or concrete road surfaces. Our investigations covered six hot-applied joint sealants, classified as the high-extension type N1 (elastic) or low-extension type N2 (normal), in accordance with the standard EN 14188-1; the sealants were obtained commercially from four European manufacturers. The present paper focuses on the characterization of the consistency of the joint sealants, the bituminous binders that contain them, and the characterization of their insoluble components. Additional testing methods included an FTIR analysis of the sealants and the extracted binders, as well as SEM, EDS, and sieving analyses of the insoluble material. Joint sealants are complex formulations and include a broad range of base asphalt binders and other components. Their compositions may vary widely, while still fulfilling the performance specifications. Through the extraction of the solvents and the separation of the crack sealants, it was found that radically different compositions of crack sealants resulted in the comparatively similar performance of the tested material. The EDS and FTIR analysis methods provided insights into the composition of the crack sealants and the types of mineral materials used. Full article
(This article belongs to the Special Issue Advances in Asphalt Materials (Second Volume))
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15 pages, 3899 KiB  
Article
Investigation of the Rheological Properties and Storage Stability of Waste Polyethylene/Ethylene–Vinyl Acetate-Modified Asphalt with Crosslinking and a Silicone Coupling Agent
by Yuhao Ma, Tao Zhou, Hao Song and Hong Zhang
Materials 2023, 16(9), 3289; https://doi.org/10.3390/ma16093289 - 22 Apr 2023
Viewed by 969
Abstract
As the market for polyethylene consumption continues to expand, the amount of waste polyethylene is also increasing. Modifying asphalt with waste polyethylene (PE) is economical and environmentally friendly. The low-temperature performance and storage stability of PE-modified asphalt has long been an insurmountable problem. [...] Read more.
As the market for polyethylene consumption continues to expand, the amount of waste polyethylene is also increasing. Modifying asphalt with waste polyethylene (PE) is economical and environmentally friendly. The low-temperature performance and storage stability of PE-modified asphalt has long been an insurmountable problem. The high vinyl acetate (VA) content of ethylene–vinyl acetate (EVA) and PE blended into asphalt can improve the compatibility of PE and asphalt. It compensates for the high VA content of EVA brought about by the lack of high-temperature resistance to permanent deformation but is still not conducive to the stable storage of PE at high temperatures. The effect of furfural extraction oil, a crosslinking (DCP) agent, a silicone coupling agent (KH-570), and calcium carbonate (CaCO3) on the rheological properties and compatibility of PE/EVA-modified asphalt was investigated in this study. The conventional physical properties of PE/EVA-modified asphalt were tested after introducing furfural extraction oil, DCP, KH570, and CaCO3 to determine the correlations of these materials. In addition, frequency sweep, multiple stress creep and recovery (MSCR), and linear amplitude sweep (LAS) were utilized to characterize the rheological properties and fatigue behavior. The results reveal that the addition of suitable ratios of furfural extract oil, DCP, KH-570, and CaCO3 to PE/EVA-modified asphalt produces a remarkable improvement in the viscoelastic characteristics and viscosity compared with PE/EVA-modified asphalt. Furthermore, fluorescence microscopy (FM) was utilized to evaluate the modification mechanism, which shows that PE/EVA undergoes significant crosslinking in asphalt, forming a three-dimensional network structure that dissolves in the asphalt. The storage stability of the PE-modified bitumen was fully determined, and its high-temperature rheology was substantially improved. Full article
(This article belongs to the Special Issue Advances in Asphalt Materials (Second Volume))
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