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About Coloured Cold Asphaltic Mixtures

open access: yesBulletin of the Polytechnic Institute of Jassy: Constructions, Architechture Section, 2008
The first coloured bitumen was obtained by using bitumen from Peru and then bitumen from the Middle East, with a low content of asphaltenes, also called "colourable" bitumens. The colours obtained by adding iron oxides led nevertheless to dark colours, due to the presence of asphaltenes.
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