Searched for: author%3A%22Scarpas%2C+A.%22
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Jing, R. (author), Varveri, A. (author), Liu, X. (author), Scarpas, A. (author), Erkens, S.M.J.G. (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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Nahar, S.N. (author), Schmets, A.J.M. (author), Scarpas, A. (author)
Trace elements and their concentrations play an important role in both chemical and physical properties of bitumen. Instrumental Neutron Activation Analysis (INAA) has been applied to determine the concentration of trace elements in bitumen. This method requires irradiation of the material with neutrons that transform the elements into...
conference paper 2016
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Nahar, S.N. (author), Schmets, A.J.M. (author), Kasbergen, C. (author), Schitter, G (author), Scarpas, A. (author)
Self-healing of bitumen is a property that positively contributes to the sustainability, maintenance requirements and cost effectiveness of asphalt pavements. Ideally one would like to design an asphalt mix with a well-defined healing potential. Although substantial research efforts have been dedicated to the healing mechanism in bitumen,...
conference paper 2016
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Khedoe, RN (author), de Bondt, AH (author), Long, D. (author), Villani, M.M. (author), Scarpas, A. (author)
De interface van een band van een auto en de weg is belangrijk voor de verschillende interacties. In termen van verkeersveiligheid is stroefheid is een belangrijke factor. Voor de weg is dit niet alleen aanvangsstroefheid, maar ook ontwikkeling van stroefheid is belangrijk. Dit geldt ook voor grip van de band. Sinds 2012 zijn bandenleveranciers...
conference paper 2016
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Erkens, S.M.J.G. (author), Leegwater, G.A. (author), Scarpas, A. (author)
Asfalt heeft de aantrekkelijke eigenschap dat het zichzelf kan herstellen na schade. Er is echter tot op heden geen betrouwbare methode om de healingcapaciteit van een asfaltmengsel te bepalen. Bij het healingproces van een discrete scheur spelen twee processen een rol, namelijk het in contact komen van de oppervlakken van de scheur; het...
conference paper 2016
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Apostolidis, P. (author), Liu, X. (author), Scarpas, A. (author), van Bochove, G (author), van de Ven, M.F.C. (author)
This paper studied the induction heating and healing capacity of asphalt mortar by adding electrically conductive additives (e.g. iron powder and steel fibers), and examined the influence of different combinations of them on the mechanical response of asphalt mortars. Induction heating technique is this innovative asphalt pavement maintenance...
conference paper 2016
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Erkens, S.M.J.G. (author), Scarpas, A. (author), Blab, R. (author), Glaser, R. (author), Glover, C. (author), Oeser, M. (author), Porot, L. (author), Soenen, H. (author)
Technical specifications for the asphalt concrete properties are developed to be able to specify mixtures that will perform well in pavement applications. Being able to identify and determine properties related to pavement performance in practice is crucial for both road authorities and contractors, since it allows for design and risk management...
book 2015
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Hofko, B. (author), Eberhardsteiner, L. (author), Fussl, J. (author), Grothe, H. (author), Handle, F. (author), Hospodka, M. (author), Grossegger, D. (author), Nahar, S.N. (author), Schmets, A.J.M. (author), Scarpas, A. (author)
As a widely accepted concept, bitumen consists of four fractions that can be distinguished by their polarity. Highly polar asphaltene micelles are dispersed in a viscous phase of saturates, aromatics and resins (maltene phase). Different concentrations of asphaltenes in the bitumen result in a range of mechanical response properties. In an...
journal article 2015
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Nahar, S.N. (author), Schmets, A.J.M. (author), Schlangen, E. (author), Shirazi, M. (author), van de Ven, M.F.C. (author), Schitter, G. (author), Scarpas, A. (author)
Countermeasures to the ageing of bituminous asphalt binders is a highly important topic, both for service-life extension of asphalt ‘in the field’ and for recycling old pavements (RAP) into new structures with similar functional requirements as the original structure. Usually this is achieved by applying additives that restore the adhesive and...
conference paper 2014
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Varveri, A. (author), Scarpas, A. (author), Collop, A. (author), Erkens, S.M.J.G. (author)
In this paper, a new moisture conditioning protocol which attempts to distinguish the contributions of long- and short-term moisture damage, i.e. moisture diffusion and cyclic pore pressure generation, in asphalt mixtures is presented. The capability of the proposed protocol to rank various asphalt mixtures of known field performance for their...
conference paper 2014
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Erkens, S.M.J.G. (author), Scarpas, A. (author)
With the increasing drain on natural resources and resulting aim to reduce the environmental impact of road engineering, the use of reclaimed asphalt in fresh asphalt becomes more and more important. Despite the experience in using RAC, there are still many questions regarding the effect of RAC on the technical and environmental performance of...
book 2013
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Pauli, A. (author), Schmets, A.J.M. (author), Kasbergen, C. (author), Varveri, K. (author), Scarpas, A. (author)
Bituminous materials form a class of materials that possess the intrinsic ability to selfheal. This self-healing capability is evidenced by the observation that the service life of these materials ‘in the field’ exceeds the service life as predicted by standard mechanical laboratory tests. This mismatch between laboratory prediction and field...
conference paper 2013
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Nahar, S.N. (author), Schmets, A.J.M. (author), Scarpas, A. (author), Schitter, G. (author)
Bitumen is the binder in the composite material named asphalt concrete. Under cyclic mechanical loading of traffic passing over the pavement, eventually damage will initiate in the pavement, leading to eventual structural failure. This damaging process is accelerated by time dependent change of the mechanical properties of asphalt concrete due...
conference paper 2013
document
Pauli, A. (author), Schmets, A.J.M. (author), Kasbergen, C. (author), Varveri, K. (author), Scarpas, A. (author)
Bituminous materials form a class of materials that possess the intrinsic ability to selfheal. This self-healing capability is evidenced by the observation that the service life of these materials ‘in the field’ exceeds the service life as predicted by standard mechanical laboratory tests. This mismatch between laboratory prediction and field...
conference paper 2013
document
Nahar, S.N. (author), Schmets, A.J.M. (author), Scarpas, A. (author), Schitter, G. (author)
Bitumen is the binder in the composite material named asphalt concrete. Under cyclic mechanical loading of traffic passing over the pavement, eventually damage will initiate in the pavement, leading to eventual structural failure. This damaging process is accelerated by time dependent change of the mechanical properties of asphalt concrete due...
conference paper 2013
document
Li, J. (author), Liu, X. (author), Scarpas, A. (author), Tzimiris, G. (author)
Light weight orthotropic steel bridge decks have been widely utilized for bridges in seismic zones, movable bridges and long span bridges. In the last three decades, severe problems were reported in relation to asphaltic surfacing materials on orthotropic steel deck bridges. Earlier investigations have shown that the bonding strength of membrane...
conference paper 2013
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Jönsthövel, T.B. (author), Van Gijzen, M.B. (author), Vuik, C. (author), Scarpas, A. (author)
Large discontinuities in material properties, such as those encountered in composite materials, lead to ill-conditioned systems of linear equations. These discontinuities give rise to small eigenvalues that may negatively affect the convergence of iterative solution methods such as the preconditioned conjugate gradient method. This paper...
journal article 2013
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Li, J. (author), Scarpas, A. (author), Tzimiris, G. (author), Kasbergen, C. (author), Hofman, R. (author), Voskuilen, J. (author)
The French five-point bending test (5PBT) provides a laboratory scale test that allows studying the fatigue resistance of surfacing systems on orthotropic steel deck bridges (OSDB). The surfacing structure for OSDB in the Netherlands consists mostly of multilayer system: top porous asphalt layer, guss asphalt layer, steel deck and two membrane...
conference paper 2013
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Nahar, S.N. (author), Dillingh, B. (author), Erkens, S.M.J.G. (author), Schmets, A.J.M. (author), Fischer, H.R. (author), Scarpas, A. (author), Schitter, G. (author)
Bituminous binders are known to have microstructures at typical length scales of micrometers. This microstructure can be probed with Atomic Force Microscopy (AFM). Now that worldwide several research groups are reporting AFM results on bitumen, it is becoming important to improve the understanding of the reproducibility and objectivity of the...
conference paper 2013
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Liu, X. (author), Scarpas, A. (author), Li, J. (author), Tzimiris, G. (author), Hofman, R. (author), Voskuilen, J. (author)
In order to adequately characterize the adhesive bonding strength of the various membranes with surrounding materials on orthotropic steel decks and collect the necessary parameters for FE modeling, details of the Membrane Adhesion Test (MAT) are introduced. Analytical constitutive relations of the MAT device have been derived using the same...
conference paper 2013
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