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Experimental Characterization and Modelling of Asphalt Materials at Low Temperature
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Experimental Characterization and Modelling of Asphalt Materials at Low Temperature

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Advanced Materials Characterization".

Deadline for manuscript submissions: closed (31 May 2020) | Viewed by 8397

Special Issue Editors

Dr. Augusto Cannone Falchetto

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Chief Guest Editor
Beethovenstraße 51 bD 38106 Braunschweig
Interests: asphalt materials; quasibrittle materials
Special Issues, Collections and Topics in MDPI journals
Dr. Lily Poulikakos

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Associate Guest Editor
Empa - Swiss Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, 8600 Dübendorf, Switzerland
Interests: characterization of bituminous materials; rheology; effects of water and moisture; recycling/reuse and multi- scale characterization of asphalt concrete; targeting sustainable and multifunctional road pavements
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Alan Carter

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Associate Guest Editor
Ecole de Technologie Superieure, Département de génie de la construction, 1100, rue Notre-Dame Ouest, bureau A-3494, Montréal, QC H3C 1K3, Canada
Interests: reclaimed asphalt; waste materials; cold recycling; bitumen modification
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Road infrastructures represent a fundamental asset for the economy of both developed and developing countries. Most paved roads consist of flexible pavements, and these are commonly designed with asphalt mixtures, which are a composite of asphalt binder, aggregate, and air voids. Such a composite material is required to fulfill different functionalities, such as providing a smooth and safe pavement surface while being capable of withstanding different load-induced phenomena due to traffic and climate actions. At low temperature, asphalt mixtures may experience significant distresses associated with the increase in thermal stress by itself, with the combination of thermal stress and traffic-induced stresses, with the fact that asphalt may become brittle at low temperature, or because of the thermal cycles linked with daily change in temperature. All this can eventually lead to cracking and failure. At the material level, this implies that not only the mixture itself, but also its constituents and its sub-phases (e.g.,mastic, mortar, and fine aggregate matrix) must provide adequate performance. Therefore, the development and use of precise laboratory characterization methods, chemo-mechanical analysis, modeling, simulations, and field evaluation and monitoring are required to determine the actual performance of asphalt materials.

In this Special Issue, the current characterization methods and modeling solutions addressing the behavior and performance of asphalt materials at low temperature are presented and discussed.

It is my pleasure to invite you to submit a manuscript for this Special Issue. Full papers, communications, and reviews are all welcome.

Prof. Augusto Cannone Falchetto
Dr. Lily Poulikakos
Prof. Alan Carter
Guest Editors

Manuscript Submission Information

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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 mixture
  • asphalt mastic
  • asphalt mortar
  • fine aggregate matrix
  • low-temperature characterization
  • recycling
  • fracture mechanics
  • modeling
  • field evaluation

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Published Papers (3 papers)

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Research

19 pages, 4552 KiB  
Article
Double-Recycled Reclaimed Asphalt Pavement: A Laboratory Investigation at Low Temperatures Based on Different Mathematical Approaches
by Ki Hoon Moon and Augusto Cannone Falchetto
Materials 2020, 13(13), 3032; https://doi.org/10.3390/ma13133032 - 7 Jul 2020
Cited by 7 | Viewed by 2455
Abstract
Using recyclable materials in asphalt pavement is a fundamental design approach not only for limiting the environmental impact of the construction industry, but also for reducing the overall costs of the road infrastructures. Over the past years, road agencies have developed different policies [...] Read more.
Using recyclable materials in asphalt pavement is a fundamental design approach not only for limiting the environmental impact of the construction industry, but also for reducing the overall costs of the road infrastructures. Over the past years, road agencies have developed different policies to incorporate various types of recyclable material into conventional asphalt mixtures. reclaimed asphalt pavement (RAP) is one of the most highly recycled construction materials. However, the aged RAP binder and its stiffer and brittle characteristics compared to the fresh binder may negatively affect the performance of the recycled mixture, especially when operating in cold climates. In this study, the low-temperature response of asphalt mixture prepared with single-recycled RAP (SRRAP) and double-recycled RAP (DRRAP), prepared in the laboratory, is experimentally investigated based on creep testing performed with the bending beam rheometer (BBR). Then, the data were analyzed based on three simple mathematical models to extract information on material behavior. Finally, a new indicator named thermal stress factor (TFS) on low-temperature response is proposed. Relatively poorer performance was observed from SRRAP mixture compared to the asphalt mixture prepared with virgin material. However, the low-temperature response between SRRAP and DRRAP did not present significant differences. The values of TFS support the experimental results and suggest the possibility of considering re-recycling technology for further research with the objective of a possible application in the asphalt pavement industry. Full article
(This article belongs to the Special Issue Experimental Characterization and Modelling of Asphalt Materials at Low Temperature)
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18 pages, 10853 KiB  
Article
From Complex Modulus E* to Creep Compliance D(t): Experimental and Modeling Study
by Abdeldjalil Daoudi, Daniel Perraton, Anne Dony and Alan Carter
Materials 2020, 13(8), 1945; https://doi.org/10.3390/ma13081945 - 21 Apr 2020
Cited by 10 | Viewed by 3254
Abstract
Creep compliance (D(t)) is a very important input for the thermal cracking resistance in the Mechanistic-Empirical Pavement Design Guide (MEPDG). The aim of the work presented here is to predict the results of creep compliance D(t) from the result of complex modulus E*(ω). [...] Read more.
Creep compliance (D(t)) is a very important input for the thermal cracking resistance in the Mechanistic-Empirical Pavement Design Guide (MEPDG). The aim of the work presented here is to predict the results of creep compliance D(t) from the result of complex modulus E*(ω). The work plan is divided in two main parts: an experimental part consisting of creep tests, and a modeling part. Three configurations were compared together, namely direct tensile, direct compression and indirect tensile tests. The modelling part consists of using a 2S2P1D model coupled to Kopelman approximation to switch from the frequency domain to the time domain. Additionally, 2S2P1D was used to calibrate the generalized Kelvin–Voigt model and get the creep compliance directly from E* results. The experimental results show that D(t) from direct tensile and direct compression are the same in the viscoelastic domain and are greater than D(t) from the indirect tensile test. The indirect tensile test (IDT) seems to be very difficult to achieve compared to the other two variants. The converted results using the 2S2P1D model coupled to Kopelman approximation and the results from the GKV model describe the experimental points very well. Full article
(This article belongs to the Special Issue Experimental Characterization and Modelling of Asphalt Materials at Low Temperature)
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14 pages, 1515 KiB  
Article
Characterization of Bonding between Asphalt Concrete Layer under Water and Salt Erosion
by Wuping Ran, Yu Zhang, Ling Li, Xizhong Shen, Hailin Zhu and Yongbo Zhang
Materials 2019, 12(19), 3055; https://doi.org/10.3390/ma12193055 - 20 Sep 2019
Cited by 4 | Viewed by 2248
Abstract
The contact state between layers of asphalt pavement not only has a significant effect on the mechanical response of road structure but is also the bottleneck of research on the mechanical behavior of pavement structure at present. In this paper, the effects and [...] Read more.
The contact state between layers of asphalt pavement not only has a significant effect on the mechanical response of road structure but is also the bottleneck of research on the mechanical behavior of pavement structure at present. In this paper, the effects and laws of different water–salt entry modes, salt solution concentrations, and temperatures coupling on the contact state between base and surface layers are studied by a 45° inclined shear test. The simulation and verification of each working condition are carried out by ABAQUS (Dassault, Paris, France) the friction coefficient between layers is reversed, and the actual contact state between layers is characterized in order to realize comprehensive evaluation and reasonable expression. The results show that different modes have different effects on contact characteristics. At the same temperature and concentration of the salt solution, bonding of water and salt erosion is the best, followed by direct erosion, with the worst being from bottom to top, and the interlayer bonding condition is weakened with increase in temperature. The relative accuracy of the software simulation and test analysis was as high as 92% and the friction coefficient of the water-free salt erosion test piece was found to be about 0.85 at 25 °C, while after the bottom-up erosion of the 14% salt solution the friction coefficient was found to be about 0.43, which indicates that the corrosion of the water–salt will have a great effect on the bonding condition between the structural layers of the road. Full article
(This article belongs to the Special Issue Experimental Characterization and Modelling of Asphalt Materials at Low Temperature)
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