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Adhesion of Bitumen to Minerals

Adhesion of Bitumen to Minerals The adhesion of 28 minerals with highway-grade bitumen is assessed, in terms of the surface area of the mineral (%) still coated with bitumen after boiling in water. With increase in the total content of CaO, MgO, Fe2O3, and Al2O3, the adhesion of bitumen to the minerals increases, whereas the adhesion decreases with increase in the content of SiO2, Na2O, K2O, and CO2. After boiling, the bitumen at the rock surface is not distributed randomly but is concentrated at specific mineral grains: biotite in the case of granite and gneiss; and pyroxene in the case of gabbro. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Coke and Chemistry Springer Journals

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References (37)

Publisher
Springer Journals
Copyright
Copyright © Allerton Press, Inc. 2022. ISSN 1068-364X, Coke and Chemistry, 2022, Vol. 65, No. 1, pp. 24–32. © Allerton Press, Inc., 2022. Russian Text © The Author(s), 2022, published in Koks i Khimiya, 2022, No. 1, pp. 27–36.
ISSN
1068-364X
eISSN
1934-8398
DOI
10.3103/s1068364x22010033
Publisher site
See Article on Publisher Site

Abstract

The adhesion of 28 minerals with highway-grade bitumen is assessed, in terms of the surface area of the mineral (%) still coated with bitumen after boiling in water. With increase in the total content of CaO, MgO, Fe2O3, and Al2O3, the adhesion of bitumen to the minerals increases, whereas the adhesion decreases with increase in the content of SiO2, Na2O, K2O, and CO2. After boiling, the bitumen at the rock surface is not distributed randomly but is concentrated at specific mineral grains: biotite in the case of granite and gneiss; and pyroxene in the case of gabbro.

Journal

Coke and ChemistrySpringer Journals

Published: Jan 1, 2022

Keywords: bitumen; adhesion; minerals; rock; elemental composition; roadway surfaces; durability

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