Analysis of 50/70 foamed bitumen properties in the aspect of its utilization in mineral-bitumen mixtures

Anna Chomicz-Kowalska


Department of Transportation Engineering; Faculty of Civil Engineering and Architecture; Kielce University of Technology (Poland)
https://orcid.org/0000-0002-2784-8197

Abstract

The aim of the study was to analyze the properties of foamed bitumen produced from 50/70 bitumen in terms of the assessment of its usefulness to the road construction materials. In order to improve the foaming parameters the synthetic wax Fischer-Tropsch (FT) in an amount of 1.0%, 2.0% and 3.0% was used. Bitumen binder parameters were evaluated before and after the foaming process. The basic parameters were evaluated (before the foaming process): penetration, Fraass breaking point and softening point. The bitumen foam parameters were measured at the foaming water content (FWC) in the range from 1.5% to 4.0% with an increment of 0.5%. The tests allowed determining optimal application ranges for the FT and the FWC to produce asphalt at lower temperatures.


Keywords:

foamed bitumen, expansion ratio, half-life, foam index, warm mix asphalt (WMA), half warm mix asphalt (HWMA)

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Published
2014-12-09

Cited by

Chomicz-Kowalska, A. (2014) “Analysis of 50/70 foamed bitumen properties in the aspect of its utilization in mineral-bitumen mixtures”, Budownictwo i Architektura, 13(4), pp. 091–100. doi: 10.35784/bud-arch.1722.

Authors

Anna Chomicz-Kowalska 

Department of Transportation Engineering; Faculty of Civil Engineering and Architecture; Kielce University of Technology Poland
https://orcid.org/0000-0002-2784-8197

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