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First-principles investigation of the multiple phases in bituminous materials: the case of asphaltene stacking
Delft Univ Technol, Fac Civil Engn & Geosci, Delft, Netherlands.ORCID iD: 0000-0003-3968-6778
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2009 (English)In: ADVANCED TESTING AND CHARACTERISATION OF BITUMINOUS MATERIALS:  VOLS 1 AND 2 , Rhodes, Greece, 2009, 143-150 p.Conference paper, Published paper (Refereed)
Abstract [en]

The existence of a microstructure in bituminous materials can explain this materials tendency to self heal. By means of atomic force microscopy and small angle neutron scattering the existence of the microstructure is demonstrated once again. Then it is suggested that the observed microstructure may very well be a consequence of the aggregation of asphaltenic molecules (providing internal volumes with a low H/C-ratio). This is a rather unadventurous suggestion, because flocculation of asphaltenes costs the global oil industry millions of dollars per day. A model asphaltene (a coronene-like molecule) has been selected for calculating semi-empirically the tendency to form stacks. It was found that there is some tendency to cluster, but the effect is not strong enough to be responsible for the observed microstructure.

Place, publisher, year, edition, pages
Rhodes, Greece, 2009. 143-150 p.
National Category
Infrastructure Engineering
Identifiers
URN: urn:nbn:se:kth:diva-84086ISI: 000280392100015OAI: oai:DiVA.org:kth-84086DiVA: diva2:499153
Conference
7th RILEM Conference on Advanced Testing and Characterization of Bituminous Materials, Rhodes, GREECE, MAY 27-29, 2009
Note
TSC import 1923 2012-02-10. QC 20120301Available from: 2012-02-13 Created: 2012-02-13 Last updated: 2012-03-01Bibliographically approved

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Kringos, Nicole

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