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Wang, H. (author), Liu, X. (author), Apostolidis, P. (author), Scarpas, Athanasios (author)Crumb rubber-modified bitumen (CRMB) has been utilized in the asphalt paving industry for decades due to its various benefits. The complex interaction between bitumen and crumb rubber as well as the addition of warm-mix additives makes the typical laws of Newtonian fluids insufficient to describe the behaviors of highly modified bituminous...journal article 2018
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Apostolidis, P. (author), Liu, X. (author), Kasbergen, C. (author), van de Ven, Martin (author), Pipintakos, G. (author), Scarpas, Athanasios (author)The chemical irreversible hardening of epoxy modified bitumen is affected by various physical factors and the successful application of this technology is directly linked with full understanding of chemo-rheological material characteristics. This study proposes a model to describe the material viscosity evolution during hardening of epoxy...journal article 2018
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Sun, Z. (author), Yi, Junyan (author), Feng, Decheng (author), Kasbergen, C. (author), Scarpas, Athanasios (author), Zhu, Yiming (author)Bio-oil produced during the production of biodiesel is a burden to the environment. Recycling and utilization of bio-oil as a substitute for pavement bitumen can help to build an environmentally-friendly and clean infrastructure. In this study, the bio-bitumen was prepared by bio-oil based on free radical polymerization. Different kinds of...journal article 2018
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Leegwater, G.A. (author), Scarpas, Athanasios (author), Erkens, S. (author)Damage in pavements is known to reduce over time when the material is left to rest, this phenomenon is identified as healing. It has been shown that healing has a large influence on pavement performance. However, as the healing mechanism is not fully understood, there is currently no accepted method available to assess the healing performance...journal article 2018
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Wang, H. (author), Liu, X. (author), Apostolidis, P. (author), Scarpas, Athanasios (author)In recent years, transportation agencies and the general public alike are demanding increased considerations of sustainability in transport infrastructure. Warm mix asphalt (WMA) is developed for reducing energy consumptions and emissions in asphalt paving industry. In addition, the use of rubberized asphalt concrete (RAC) has proven to be...journal article 2018
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Pavlatos, N. (author), Apostolidis, P. (author), Scarpas, Athanasios (author)This research explores the incentives for replacing steel fibers with aluminum fibers in fiber modified bituminous mixes. In this work the focus is on fiber modified bituminous mixes especially designed for induction heating. Inductive fibers are heated up because eddy currents are generated - according to Joule’s law - when alternating magnetic...conference paper 2018
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Apostolidis, P. (author), Kasbergen, C. (author), Bhasin, A. (author), Scarpas, Athanasios (author), Erkens, S. (author)With the effort to predict precisely the lifetime of asphalt binders and subsequently optimize their utilization in a more economical way, the objective of this study was to introduce a new methodology to improve the fatigue characterization of asphalt binders through a new dynamic shear rheometer (DSR) sample testing geometry. Initially,...conference paper 2018
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- Apostolidis, P. (author), Liu, X. (author), Kasbergen, C. (author), van de Ven, Martin (author), Pipintakos, G. (author), Scarpas, Athanasios (author) conference paper 2018
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Jing, R. (author), Varveri, Aikaterini (author), Liu, X. (author), Scarpas, Athanasios (author), Erkens, S. (author)Ageing of bitumen is a complex process. It is accompanied by major chemical and mechanical changes. In this study, Fourier Transform Infrared (FTIR) spectrometer and Dynamic Shear Rheometer (DSR) tests were utilized to investigate the effect of ageing on the chemical and mechanical properties of bituminous materials. Bitumen films with thickness...conference paper 2018
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Jing, R. (author), Liu, X. (author), Varveri, Aikaterini (author), Scarpas, Athanasios (author), Erkens, S. (author)Asphalt mortar is a mixture of bitumen, filler, and sand. Mortar plays an important role in asphalt mixtures as it serves as the adhesive between the coarser aggregates. Due to the effect of bitumen ageing, the chemical and mechanical properties of asphalt mortar evolve with time. The mortar becomes more brittle and prone to cracking, thus...journal article 2018
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Apostolidis, P. (author), Liu, X. (author), Wang, H. (author), van de Ven, Martin (author), Scarpas, Athanasios (author)Asphaltic mixes are self-healing materials since they have the capacity to close internal microcracks at higher temperatures or under external force. To trigger their self-healing, asphalt mixes modified with inductive agents can be heated and in that way healed through applying alternating magnetic fields with the aid of an induction coil and...conference paper 2018
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Pavlatos, N. (author), Apostolidis, P. (author), Scarpas, Athanasios (author), Liu, X. (author), van de Ven, Martin (author)This research presents the implementation of a finite element model analysis for assessing the potential of utilizing alternative fibers for the development of inductive bituminous mixes with lower total weight, higher resistance against corrosion, and sufficient induction heating efficiency. Aluminum fibers are<br/>selected as the metallic...conference paper 2018
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Wang, H. (author), Liu, X. (author), Apostolidis, P. (author), Scarpas, Athanasios (author)The microstructure and chemical composition of asphalt binders have a significant effect on their rheological properties and, therefore, their performance as road paving binders. This study aims to investigate the effects of warm-mix asphalt (WMA) additives, organic type and chemical type, on the rheological properties and chemical internal...journal article 2018
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Zhou, C. (author), Liu, X. (author), Apostolidis, P. (author), Scarpas, Athanasios (author), He, Liang (author)Low temperature asphalt (LTA) technologies, such as warm-mixed asphalt mixes, are utilized in the paving industry to lower energy demands and greenhouse gas emissions during asphalt mixing and pavement construction. However, the asphalt mixes developed that incorporate LTA additives are more sensitive than hot-mixed asphalts to temperature...journal article 2018
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Jing, R. (author), Varveri, Aikaterini (author), Liu, X. (author), Scarpas, Athanasios (author), Erkens, S. (author)The ageing of bitumen has a significant impact on the mechanical behavior of asphalt concrete. In this study, Dynamic Shear Rheometer (DSR) tests were utilized to investigate the effect of ageing on the relaxation properties of bituminous materials. PEN 70/100 bitumen films with thickness of 2 mm were exposed to laboratory ageing at various...conference paper 2018
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Apostolidis, P. (author), Liu, X. (author), Kasbergen, C. (author), van de Ven, Martin (author), Scarpas, Athanasios (author)Induction assisted chemical hardening (curing) or induction hardening is a novel in situ hardening technique for thermoset modified bituminous materials that maintains most of the advantages of natural chemical hardening while eliminating the possible restrictions of longer curing times at lower temperatures. In particular, induction heating can...conference paper 2018
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Apostolidis, P. (author), Pipintakos, G. (author), Liu, X. (author), van de Ven, Martin (author), Erkens, S. (author), Scarpas, Athanasios (author)Epoxy modified bitumen (EMB) is a promising technology for long lasting paving materials ensuring higher resistance to rutting, oxygen- and moisture-induced damage. In this paper, an analysis of the chemical reactions that take place during the chemical hardening process (curing) of epoxy modified bitumen<br/>was conducted by means of Fourier...conference paper 2018
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Wang, H. (author), Liu, X. (author), Zhang, H. (author), Apostolidis, P. (author), Scarpas, Athanasios (author), Erkens, S. (author)Warm mix asphalt (WMA) technology has been increasingly utilised in rubberised asphalt pavements to reduce the production and compaction temperatures and the incidental fumes and odours. This study aims to investigate the high, intermediate and low-temperature performance of crumb rubber modified asphalt binders containing WMA additives. The...journal article 2018
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Tarsi, G. (author), Varveri, Aikaterini (author), Lantieri, Claudio (author), Scarpas, Athanasios (author), Sangiorgi, Cesare (author)Bitumen undergoes ageing, which leads to changes in its chemical and rheological properties, causing it to become harder and more brittle with time. This study aims to compare the effects of different laboratory ageing methods on the chemistry and rheology of three bitumen types: a Pen 40=60, a Pen 70=100, and a polymer-modified bitumen (PmB)...journal article 2018
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Tang, T. (author), Anupam, K. (author), Kasbergen, C. (author), Kogbara, Reginald (author), Scarpas, Athanasios (author), Masad, Eyad (author)The skid resistance of a pavement surface is an important characteristic that influences traffic safety. Previous studies have shown that skid resistance varies with temperature. However, relatively limited work has been carried out to study the effect of temperature on skid resistance in hot climates. Recent developments in computing and...journal article 2018