Foaming Effects on Binder Chemistry and Aggregate Coatability using Foamed Bitumen Academic Article

abstract

• Foaming effects on binder chemistry were investigated using two bitumens from different sources with similar grades. Infrared spectroscopy techniques were done on neat and foamed bitumen samples. Aggregate particle coating with foamed bitumen was studied using Rice density and surface energy concepts. Infrared spectra results showed that foaming does not change the bitumen chemistry. Rice density tests showed that the aggregate size mainly influenced binder coating of aggregate particles, bitumen was mostly concentrated within the fine fraction where foamed bitumen was used. Surface energy results revealed that foamed bitumen possesses higher coating attributes than neat bitumen. Film thickness results implied that aggregate size and surface area, expansion ratio and binder viscosity influences binder thickness. 2011 Taylor & Francis Group, LLC. All rights reserved.

authors

• Birgisson, Bjorn

published proceedings

• Road Materials and Pavement Design

author list (cited authors)

• Namutebi, M., Birgisson, B., & Bagampadde, U.

citation count

• 22

complete list of authors

• Namutebi, May||Birgisson, Björn||Bagampadde, Umaru

publication date

• January 2011

publisher

• Taylor & Francis  Publisher

published in

• ROAD MATERIALS AND PAVEMENT DESIGN  Journal

Digital Object Identifier (DOI)

• 10.1080/14680629.2011.9713896

start page

• 821

end page

• 847

volume

• 12

issue

• 4

URL

• http://dx.doi.org/10.1080/14680629.2011.9713896