Please use this identifier to cite or link to this item: http://hdl.handle.net/1822/39157

TitleFoamed Bitumen: an alternative way of producing asphalt mixtures
Author(s)Abreu, Liliana
Oliveira, Joel
Silva, Hugo Manuel Ribeiro Dias da
Silva, Catarina
Palha, Daniela
Fonseca, Paulo
KeywordsAsphalt mixtures
Bitumen foaming characteristics
Foamed bitumen
Warm Mix Asphalt
Issue dateJun-2015
PublisherElsevier España
JournalCiência & Tecnologia dos Materiais
CitationAbreu L., Oliveira J. R. M., Silva H. M. R. D., Silva C., Palha D., Fonseca P. Foamed Bitumen: an alternative way of producing asphalt mixtures, Materiais 2015: VII International Materials Symposium, 2015
Abstract(s)With the constant need to improve and make the production of asphalt mixtures more sustainable, new production techniques have been developed, the implementation of which implies the correct knowledge of their performance. One of the most promising asphalt production techniques is the use of foamed bitumen. However, it is essential to understand how this binder will behave when subject to the expansion process. The loss of volume of the foamed bitumen could be translated by a decay curve, which allows to determine the ideal temperature and water content added to the bitumen in order to assure adequate conditions to the mix the bitumen with the aggregates. On the present study, a conventional 160/220 pen grade bitumen was tested by using different temperatures and water contents, and it was concluded that the optimum temperature for the production of foamed bitumen (with the studied bitumen) is 150 ºC, which corresponds to a viscosity of 0.1 Pa.s. The water content mostly influence the half-life of the bitumen foam, resulting in quicker volume reductions for higher water contents.
TypeConference paper
URIhttp://hdl.handle.net/1822/39157
Peer-Reviewedyes
AccessRestricted access (UMinho)
Appears in Collections:C-TAC - Comunicações a Conferências Internacionais

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