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Special Issue "Environment-Friendly Construction Materials"

A special issue of Materials (ISSN 1996-1944).

Deadline for manuscript submissions: 15 February 2019

Special Issue Editors

Guest Editor
Prof. Dr. Shaopeng Wu

State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology (WUT), China
Website | E-Mail
Interests: inorganic nonmetallic materials; bituminous materials and asphalt pavement; recycling asphalt materials; self-healing asphalt
Guest Editor
Prof. Dr. Inge Hoff

Department of Civil and Environmental Engineering, Norwegian University of Science and Technology (NTNU), Norway
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Interests: materials for transport infrastructure; environmental impact of pavement materials
Guest Editor
Prof. Dr. Serji Amirkhanian

Department of Civil, Construction, and Environmental Engineering, University of Alabama, Tuscaloosa, AL 35487, USA
Website | E-Mail
Interests: construction materials; recycling issues and polymers; rubber tire recycling
Guest Editor
Assoc. Prof. Dr. Yue Xiao

State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology (WUT), China
Website | E-Mail
Interests: road and pavement materials; pavement design; asphalt pavement surfacing; asphalt pavement maintenance

Special Issue Information

Dear Colleagues,

The 1st International Conference on Sustainable Mega Infrastructures (SMI 2018) and the 3rd International Conference on Sustainable Construction Materials: Design, Performance and Application (SCM2018) will be held in Donghu Hotel, Wuhan City, Hubei, China, on 10-11 August 2018. This conference is sponsored by the Wuhan University of Technology (WUT), the Norwegian University of Science and Technology (NTNU) and the University of Alabama.

The SCM conferences have been a successful and a longstanding event since 2010, which bring together academic researchers and civil engineers from the world to promote technological achievement in sustainable construction materials. SMI2018 and SCM2018 will once again provide a unique opportunity to discuss the strategies and challenges related to the planning, execution and use of mega infrastructures, as well as sustainable construction materials. The scope of SMI2018 and SCM2018 will include, but is not limited to, cementitious paving materials, bituminous paving materials, recycled materials, waste materials, and so on.

The SMI2018 and SCM2018 will prepare diverse programs, including a plenary/keynote sessions, oral/poster sessions, exhibitions, and social events. This Special Issue was proposed based on the productive abstract submissions. Participants at SMI2018 and SCM2018 are highly encouraged to submit papers in this Special Issue for possible publication in Materials. Authors who would not attend the SMI2018 and SCM2018 conference are also warmly invited to submit a paper for this Special Issue.

Prof. Dr. Shaopeng Wu
Prof. Dr. Inge Hoff
Prof. Dr. Serji Amirkhanian
Assoc. Prof. Dr. Yue Xiao
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 papers will be 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 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 1600 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

  • Social and economic aspects of mega projects
  • Asphalt-based & cement-based mixtures
  • Pavement engineering
  • Environmental impact
  • Sustainable materials
  • Planning process
  • Digitalization of mega infrastructures
  • Pavement maintenance

Published Papers (7 papers)

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Research

Open AccessArticle Diffusibility Enhancement of Rejuvenator by Epoxidized Soybean Oil and Its Influence on the Performance of Recycled Hot Mix Asphalt Mixtures
Materials 2018, 11(5), 833; https://doi.org/10.3390/ma11050833
Received: 26 March 2018 / Revised: 16 May 2018 / Accepted: 16 May 2018 / Published: 18 May 2018
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Abstract
Epoxidized soybean oil (ESO) was employed as a novel penetrant cooperating with a conventional rejuvenator (CR) for the recycling of reclaimed asphalt pavement (RAP). The influence of ESO on the diffusibility and the regenerating effects of CR on RAP were investigated. The diffusibility
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Epoxidized soybean oil (ESO) was employed as a novel penetrant cooperating with a conventional rejuvenator (CR) for the recycling of reclaimed asphalt pavement (RAP). The influence of ESO on the diffusibility and the regenerating effects of CR on RAP were investigated. The diffusibility testing result shows that the diffusibility of CR is enhanced by the addition of ESO because the epoxy group in ESO can facilitate asphaltene dispersion due to its high polarity, which simultaneously reduces the viscosity and improves the fluidity of aged bitumen so as to allow diffusion of the rejuvenator into the aged bitumen. Road performance testing of a recycled hot mix asphalt mixture (RHMA) indicates that the fatigue and cracking resistance properties as well as the water stability of RHMA containing CR can be improved by the addition of ESO due to the diffusibility enhancement of CR, which boosts the regenerating effect of CR on aged bitumen in RAP. The fatigue and cracking resistance properties as well as the water stability of the recycled hot mix asphalt mixture containing CR with 7 wt % ESO approximate those of the hot mix asphalt mixture composed of the same virgin aggregates and bitumen. Taking into account the rutting resistance decline versus the addition of ESO, the content of ESO should not exceed 7 wt % of the conventional rejuvenator. Full article
(This article belongs to the Special Issue Environment-Friendly Construction Materials)
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Open AccessArticle Preparation and Thermal Properties of Molecular-Bridged Expanded Graphite/Polyethylene Glycol Composite Phase Change Materials for Building Energy Conservation
Materials 2018, 11(5), 818; https://doi.org/10.3390/ma11050818
Received: 20 April 2018 / Revised: 9 May 2018 / Accepted: 12 May 2018 / Published: 16 May 2018
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Abstract
Using phase change materials (PCMs) in building envelopes became a reliable method to improve indoor comfort and reduce buildings’ energy consumption. This research developed molecular-bridged expanded graphite (EG)/polyethylene glycol (PEG) composite PCMs (m-EPs) to conserve energy in buildings. The m-EPs were prepared through
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Using phase change materials (PCMs) in building envelopes became a reliable method to improve indoor comfort and reduce buildings’ energy consumption. This research developed molecular-bridged expanded graphite (EG)/polyethylene glycol (PEG) composite PCMs (m-EPs) to conserve energy in buildings. The m-EPs were prepared through a vacuum absorption technique, and a titanate coupling agent was used to build a molecular bridge between EG and PEG. SEM, mercury intrusion porosimetry (MIP), the leakage test, microcalorimetry, X-ray photoelectron spectroscopy (XPS), and Fourier transform infrared spectroscopy (FT-IR) were conducted to characterize the morphology, pore structure, absorbability, and modifying effects of the m-EPs. The phase change temperature, latent heat, thermal stability, and thermal conductivity of the m-EPs were determined by a differential scanning calorimeter (DSC), TGA, and a thermal constants analyzer. Results showed that the maximum mass ratio of PEG to EG without leakage was 1:7, and a stable connection was established in the m-EPs after modification. Compared with the unmodified EPs, the supercooling degree of the m-EPs reduced by about 3 °C, but the latent heats and initial decomposition temperatures increased by approximately 10% and 20 °C, respectively, which indicated an improvement in the thermal energy storage efficiency. The thermal conductivities of the m-EPs were 10 times higher than those of the pristine PEGs, which ensured a rapid responding to building temperature fluctuations. Full article
(This article belongs to the Special Issue Environment-Friendly Construction Materials)
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Open AccessArticle The Effect of Ultraviolet Radiation on Bitumen Aging Depth
Materials 2018, 11(5), 747; https://doi.org/10.3390/ma11050747
Received: 3 April 2018 / Revised: 27 April 2018 / Accepted: 3 May 2018 / Published: 7 May 2018
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Abstract
The aging effect of ultraviolet (UV) radiation on bitumen has gained increasing attention from researchers, resulting in the emergence of a new method to simulate the UV aging that occurs during the service life of bitumen. However, the UV aging degree is closely
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The aging effect of ultraviolet (UV) radiation on bitumen has gained increasing attention from researchers, resulting in the emergence of a new method to simulate the UV aging that occurs during the service life of bitumen. However, the UV aging degree is closely related to bitumen thickness and the effect of UV radiation on aging depth is not clear. The relationship between ultraviolet (UV) radiation and bitumen UV aging depth was investigated in this paper. Three groups of samples were UV aged using different aging procedures to investigate the bitumen aging mechanism of UV radiation. The results from the first group showed that UV aging depth increased along with aging time. After aging for five hours, the complex modulus of the second and third layers increased. The second group’s results indicated that the aging effect of ozone was small and that the increase in aging depth was uncorrelated with ozone. The results from the third group showed that the transmittance of bitumen increased after UV aging and that the real reason why aging depth increased was permeation. Full article
(This article belongs to the Special Issue Environment-Friendly Construction Materials)
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Open AccessArticle Method of Fatigue-Life Prediction for an Asphalt Mixture Based on the Plateau Value of Permanent Deformation Ratio
Materials 2018, 11(5), 722; https://doi.org/10.3390/ma11050722
Received: 11 April 2018 / Revised: 22 April 2018 / Accepted: 25 April 2018 / Published: 3 May 2018
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Abstract
Laboratory predictions for the fatigue life of an asphalt mixture under cyclic loading based on the plateau value (PV) of the permanent deformation ratio (PDR) were carried out by three-point bending fatigue tests. The influence of test conditions on the recovery ratio of
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Laboratory predictions for the fatigue life of an asphalt mixture under cyclic loading based on the plateau value (PV) of the permanent deformation ratio (PDR) were carried out by three-point bending fatigue tests. The influence of test conditions on the recovery ratio of elastic deformation (RRED), the permanent deformation (PD) and PDR, and the trends of RRED, PD, and PDR were studied. The damage variable was defined by using PDR, and the relation of the fatigue life to PDR was determined by analyzing the damage evolution process. The fatigue equation was established based on the PV of PDR and the fatigue life was predicted by analyzing the relation of the fatigue life to the PV. The results show that the RRED decreases with the increase of the number of loading cycles, and the elastic recovery ability of the asphalt mixture gradually decreases. The two mathematical models proposed are based on the change laws of the RRED, and the PD can well describe the change laws. The RRED or the PD cannot well predict the fatigue life because they do not change monotonously with the fatigue life, and one part of the deformation causes the damage and the other part causes the viscoelastic deformation. The fatigue life decreases with the increase of the PDR. The average PDR in the second stage is taken as the PV, and the fatigue life decreases in a power law with the increase of the PV. The average relative error of the fatigue life predicted by the fatigue equation to the test fatigue life is 5.77%. The fatigue equation based on PV can well predict the fatigue life. Full article
(This article belongs to the Special Issue Environment-Friendly Construction Materials)
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Open AccessArticle Performance Evaluation and Improving Mechanisms of Diatomite-Modified Asphalt Mixture
Materials 2018, 11(5), 686; https://doi.org/10.3390/ma11050686
Received: 3 April 2018 / Revised: 17 April 2018 / Accepted: 25 April 2018 / Published: 27 April 2018
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Abstract
Diatomite is an inorganic natural resource in large reserve. This study consists of two phases to evaluate the effects of diatomite on asphalt mixtures. In the first phase, we characterized the diatomite in terms of mineralogical properties, chemical compositions, particle size distribution, mesoporous
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Diatomite is an inorganic natural resource in large reserve. This study consists of two phases to evaluate the effects of diatomite on asphalt mixtures. In the first phase, we characterized the diatomite in terms of mineralogical properties, chemical compositions, particle size distribution, mesoporous distribution, morphology, and IR spectra. In the second phase, road performances, referring to the permanent deformation, crack, fatigue, and moisture resistance, of asphalt mixtures with diatomite were investigated. The characterization of diatomite exhibits that it is a porous material with high SiO2 content and large specific surface area. It contributes to asphalt absorption and therefore leads to bonding enhancement between asphalt and aggregate. However, physical absorption instead of chemical reaction occurs according to the results of FTIR. The resistance of asphalt mixtures with diatomite to permanent deformation and moisture are superior to those of the control mixtures. But, the addition of diatomite does not help to improve the crack and fatigue resistance of asphalt mixture. Full article
(This article belongs to the Special Issue Environment-Friendly Construction Materials)
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Open AccessArticle Application of Recycled Ceramic Aggregates for the Production of Mineral-Asphalt Mixtures
Materials 2018, 11(5), 658; https://doi.org/10.3390/ma11050658
Received: 30 March 2018 / Revised: 18 April 2018 / Accepted: 19 April 2018 / Published: 24 April 2018
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Abstract
This paper describes a method of designing and producing innovative mineral–asphalt mixtures, which utilize waste aggregate from the recycling of sanitary ceramics. The work presents the basic properties of the ceramic material, the investigation concerning the microstructure of the aggregate obtained from the
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This paper describes a method of designing and producing innovative mineral–asphalt mixtures, which utilize waste aggregate from the recycling of sanitary ceramics. The work presents the basic properties of the ceramic material, the investigation concerning the microstructure of the aggregate obtained from the grinding of waste, and a comparison with the images obtained for the aggregates usually employed in mineral–asphalt mixtures. The mixtures were designed for the application in the wearing course. Four series of mixtures were prepared. In the first and second, the ceramic aggregate constituted a partial substitute for dolomite, whereas in the third, we substituted granodiorite, and the fourth series contained only dolomite. The mixtures were examined for the content of soluble binder, the bulk density of samples, the presence of voids, the space filled with binder, and the susceptibility to water and frost corrosion. The obtained results were compared with the standard requirements. The microstructure as well as the contact zone in the considered mineral–asphalt mixtures are presented based on research conducted by means of a scanning electron microscope (SEM). Full article
(This article belongs to the Special Issue Environment-Friendly Construction Materials)
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Open AccessArticle Microfluidic Synthesis of Ca-Alginate Microcapsules for Self-Healing of Bituminous Binder
Materials 2018, 11(4), 630; https://doi.org/10.3390/ma11040630
Received: 11 April 2018 / Revised: 16 April 2018 / Accepted: 17 April 2018 / Published: 19 April 2018
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Abstract
This work aims to develop an original alginate micro-emulsion combining with droplets microfluidic method to produce multinuclear Ca-alginate microcapsules containing rejuvenator for the self-healing of bituminous binder. The sizes of the Ca-alginate microcapsules could be easily controlled by tuning flow rates of the
[...] Read more.
This work aims to develop an original alginate micro-emulsion combining with droplets microfluidic method to produce multinuclear Ca-alginate microcapsules containing rejuvenator for the self-healing of bituminous binder. The sizes of the Ca-alginate microcapsules could be easily controlled by tuning flow rates of the continuous and dispersed phases. The addition of a surfactant Tween80 not only improved the stability of the emulsion, but it also effectively reduced the size of the microcapsules. Size predictive mathematical model of the microcapsules was proposed through the analysis of fluid force. Optical microscope and remote Fourier infrared test confirmed the multinuclear structure of Ca-alginate microcapsules. Thermogravimetric analysis showed that the microcapsules coated with nearly 40% rejuvenator and they remained intact during the preparation of bitumen specimen at 135 °C. Micro self-healing process of bituminous binder with multinuclear Ca-alginate microcapsules containing rejuvenator was monitored and showed enhanced self-healing performance. Tensile stress-recovery test revealed that the recovery rate increased by 32.08% (in the case of 5% microcapsules), which meant that the Ca-alginate microcapsules containing rejuvenator could effectively enhance the self-healing property of bituminous binder. Full article
(This article belongs to the Special Issue Environment-Friendly Construction Materials)
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