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Asphalt Concrete

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Erik Schlangen – 1st expert on this subject based on the ideXlab platform

  • Unravelling porous Asphalt Concrete with induction heating
    Construction and Building Materials, 2014
    Co-Authors: Qian Liu, W. Yu, Erik Schlangen, Gerbert Van Bochove

    Abstract:

    ? 2014 Elsevier Ltd. All rights reserved.Ravelling is the main defect of porous Asphalt pavement. An unravelling porous Asphalt was developed in this research. Steel wool was added to porous Asphalt Concrete and induction heating was used to heal the cracks at early stage to prevent ravelling. In this paper, the mixing procedure was optimized to disperse steel wool into Asphalt mixture, the induction heating potential of porous Asphalt Concrete containing steel wool was measured, and Rotating Surface Abrasion Test with rest periods to apply induction heating was employed to study the ravelling resistance improvement of porous Asphalt Concrete. It was found that porous Asphalt Concrete containing steel wool can be heated with induction energy and induction heating can greatly reduce the stone loss of porous Asphalt Concrete, despite when induction heating was applied. Porous Asphalt suffered less ravelling damage when induction heating was applied at an earlier stage. It is concluded that unravelling porous Asphalt can be achieved by applying induction heating and induction should be applied at an early stage.

  • induction healing of Asphalt mastic and porous Asphalt Concrete
    Construction and Building Materials, 2011
    Co-Authors: Alvaro Garcia, Erik Schlangen

    Abstract:

    The objective of this paper is to detect the healing effect of Asphalt mastic and porous Asphalt Concrete caused by induction heating. It was found that the broken mastic beams could be healed many times by induction heating. Moreover, the stiffness of porous Asphalt Concrete recovered more and faster when induction heating was applied to the samples. It was also found that fatigue life of porous Asphalt Concrete was significantly extended by induction heating. Based on these findings, it was concluded that the self healing rate of Asphalt mastic and porous Asphalt Concrete can be increased by induction heating.

  • induction heating of electrically conductive porous Asphalt Concrete
    Construction and Building Materials, 2010
    Co-Authors: Erik Schlangen, Alvaro Garcia

    Abstract:

    Abstract In this research, an electrically conductive porous Asphalt Concrete, used for induction heating, was prepared by adding electrically conductive filler (steel fibers and steel wool) to the mixture. The main purpose of this paper is to examine the electrical conductivity and the indirect tensile strength of this conductive porous Asphalt Concrete and prove that it can be heated via induction heating. It was found that, to make porous Asphalt Concrete electrically conductive, long steel wool with small diameter is better than short steel fibers with bigger diameter. However, steel fibers with short length and big diameter have better strength reinforcement capability than steel wool with long length and small diameter. It was also proved that conductive porous Asphalt Concrete containing steel wool can be easily heated via induction heating. Finally, 10% (by volume of bitumen) of steel wool type 000 was proposed as an optimal content in porous Asphalt Concrete to obtain an optimal conductivity, a good induction heating rate and an acceptable indirect tensile strength. It is expected that the autogenous healing capacity of Asphalt Concrete will be enhanced with the increase of temperature during induction heating.

Alvaro Garcia – 2nd expert on this subject based on the ideXlab platform

  • induction healing of dense Asphalt Concrete
    Construction and Building Materials, 2013
    Co-Authors: Alvaro Garcia, Manfred N Partl, Moises Bueno, J Norambuenacontreras

    Abstract:

    Induction heating can be used for repairing cracks in Asphalt Concrete. With this purpose, electrically conductive particles have to be added to the Asphalt mixture, which is then heated with an induction heating device. Since the factors affecting the induction healing of dense Asphalt Concrete are not well-known, in this article, different mixtures, with different lengths, quantities and diameters of steel wool fibres have been considered. It was found that there is a minimum temperature for healing Asphalt Concrete. Additionally a semi-empirical model, explaining Asphalt healing through the capillary theory has been developed and fitted to the results.

  • induction healing of Asphalt mastic and porous Asphalt Concrete
    Construction and Building Materials, 2011
    Co-Authors: Alvaro Garcia, Erik Schlangen

    Abstract:

    The objective of this paper is to detect the healing effect of Asphalt mastic and porous Asphalt Concrete caused by induction heating. It was found that the broken mastic beams could be healed many times by induction heating. Moreover, the stiffness of porous Asphalt Concrete recovered more and faster when induction heating was applied to the samples. It was also found that fatigue life of porous Asphalt Concrete was significantly extended by induction heating. Based on these findings, it was concluded that the self healing rate of Asphalt mastic and porous Asphalt Concrete can be increased by induction heating.

  • induction heating of electrically conductive porous Asphalt Concrete
    Construction and Building Materials, 2010
    Co-Authors: Erik Schlangen, Alvaro Garcia

    Abstract:

    Abstract In this research, an electrically conductive porous Asphalt Concrete, used for induction heating, was prepared by adding electrically conductive filler (steel fibers and steel wool) to the mixture. The main purpose of this paper is to examine the electrical conductivity and the indirect tensile strength of this conductive porous Asphalt Concrete and prove that it can be heated via induction heating. It was found that, to make porous Asphalt Concrete electrically conductive, long steel wool with small diameter is better than short steel fibers with bigger diameter. However, steel fibers with short length and big diameter have better strength reinforcement capability than steel wool with long length and small diameter. It was also proved that conductive porous Asphalt Concrete containing steel wool can be easily heated via induction heating. Finally, 10% (by volume of bitumen) of steel wool type 000 was proposed as an optimal content in porous Asphalt Concrete to obtain an optimal conductivity, a good induction heating rate and an acceptable indirect tensile strength. It is expected that the autogenous healing capacity of Asphalt Concrete will be enhanced with the increase of temperature during induction heating.

Martin Van De Ven – 3rd expert on this subject based on the ideXlab platform

  • Preventive maintenance of porous Asphalt Concrete using surface treatment technology
    Materials and Design, 2016
    Co-Authors: Yuan Zhang, Martin Van De Ven, Andre Molenaar, Shaopeng Wu

    Abstract:

    Porous Asphalt Concrete is widely used as a surfacing layer on highways in the Netherlands because of its benefit that it is effective in reducing traffic noise. However, the service life of porous Asphalt wearing courses is limited due to the fact that it is vulnerable to raveling. A preventive maintenance strategy using surface treatment material is being considered as a cost-effective and environmentally sustainable option to extend the service life of existing porous Asphalt wearing courses. In this paper, the effect of a surface treatment to porous Asphalt wearing courses is discussed. A surface treatment material was sprayed on the porous Asphalt pavement surfaces in two field trials. Computed Tomography (CT) scans were performed on the porous Asphalt Concrete cores from the field trials to measure their volumetric properties. The rotating surface abrasion tests were used to determine the raveling resistance of the porous Asphalt Concrete samples. Finite element models with a realistic structure of the porous Asphalt Concrete were created for analyzing the stresses and strains as a result of traffic loads in the pavement surface with the surface treatment material. It is found that the effect of the surface treatment is positive.

  • Induction heating of electrically conductive porous Asphalt Concrete
    Construction and Building Materials, 2010
    Co-Authors: Qian Liu, Erik Schlangen, Avaro Garcia, Martin Van De Ven

    Abstract:

    In this research, an electrically conductive porous Asphalt Concrete, used for induction heating, was prepared by adding electrically conductive filler (steel fibers and steel wool) to the mixture. The main purpose of this paper is to examine the electrical conductivity and the indirect tensile strength of this conductive porous Asphalt Concrete and prove that it can be heated via induction heating. It was found that, to make porous Asphalt Concrete electrically conductive, long steel wool with small diameter is better than short steel fibers with bigger diameter. However, steel fibers with short length and big diameter have better strength reinforcement capability than steel wool with long length and small diameter. It was also proved that conductive porous Asphalt Concrete containing steel wool can be easily heated via induction heating. Finally, 10% (by volume of bitumen) of steel wool type 000 was proposed as an optimal content in porous Asphalt Concrete to obtain an optimal conductivity, a good induction heating rate and an acceptable indirect tensile strength. It is expected that the autogenous healing capacity of Asphalt Concrete will be enhanced with the increase of temperature during induction heating. ?? 2009 Elsevier Ltd. All rights reserved.