| Preparation of capsules containing rejuvenators for their use in asphalt concrete. | |
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MedLine Citation:
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PMID: 20855160 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Every year, there is a demand of more than 110 million metric tons of asphalt all around the world. This represents a huge amount of money and energy, from which a good part is for the preservation and renovation of the existing pavements. The problem of asphalt is that it oxidizes with time and therefore its beneficial properties disappear. Traditionally, rejuvenators spread in the road surface, are used to restore the original properties of the pavement. The problem is that, for a rejuvenator to be successful, it must penetrate the pavement surface. Furthermore, application of a rejuvenator will reduce the skid resistance of the pavement and, besides, rejuvenators have many aromatic compounds that can be harmful for the environment. To solve these problems this paper introduces a new concept in road construction: encapsulated rejuvenators. The basic principle is that when the stress in capsules embedded in the asphalt reaches a certain threshold value, the capsules break and some rejuvenator is released, restoring the original properties of the pavement. This paper will show how to prepare such capsules and how to determine their characteristics. This is one of the first steps towards intelligent pavements. |
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Authors:
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Alvaro García; Erik Schlangen; Martin van de Ven; Guadalupe Sierra-Beltrán |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2010-08-26 |
Journal Detail:
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Title: Journal of hazardous materials Volume: 184 ISSN: 1873-3336 ISO Abbreviation: J. Hazard. Mater. Publication Date: 2010 Dec |
Date Detail:
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Created Date: 2010-10-18 Completed Date: 2011-01-27 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9422688 Medline TA: J Hazard Mater Country: Netherlands |
Other Details:
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Languages: eng Pagination: 603-11 Citation Subset: IM |
Copyright Information:
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Copyright © 2010 Elsevier B.V. All rights reserved. |
Affiliation:
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Delft University of Technology, Faculty of Civil Engineering and Geosciences, Micromechanics Laboratory (MICROLAB), Stevinweg 1, 2628 CN Delft, The Netherlands. a.garciahernandez@tudelft.nl |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Calorimetry, Differential Scanning Hydrocarbons* Microscopy, Electron, Scanning Particle Size Thermogravimetry Tomography, X-Ray Computed |
| Chemical | |
Reg. No./Substance:
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0/Hydrocarbons; 8052-42-4/asphalt |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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