Next Article in Journal
Fatigue Properties of the Ultra-High Strength Steel TM210A
Previous Article in Journal
Research on High Layer Thickness Fabricated of 316L by Selective Laser Melting
Article Menu
Issue 9 (September) cover image

Export Article

Open AccessArticle
Materials 2017, 10(9), 1058; doi:10.3390/ma10091058

Towards Understanding the Polymerization Process in Bitumen Bio-Fluxes

1
Faculty of Civil Engineering, Warsaw University of Technology, 00-637 Warsaw, Poland
2
General Directorate for National Roads and Motorways, 66-004 Zielona Góra, Poland
*
Author to whom correspondence should be addressed.
Received: 9 August 2017 / Revised: 30 August 2017 / Accepted: 5 September 2017 / Published: 9 September 2017
(This article belongs to the Section Biomaterials)
View Full-Text   |   Download PDF [4679 KB, uploaded 9 September 2017]   |  

Abstract

Bitumen is a commonly used material for road construction. According to environmental regulations, vegetable-based materials are applied for binder modification. Fluxed road bitumen containing a bio-flux oxidation product increases the consistency over time. The efficiency of crosslinking depends on the number of double bonds and their position in the aliphatic chain of fatty acid. The main goal of this paper was to examine the structural changes taking place during hardening bitumen with bio-flux additives. Two types of road bitumens fluxed with two different oxidized methyl esters of rapeseed oil were used in this study. Various chemical and rheological tests were applied for the fluxed-bitumen at different stages of oxygen exposure. The oxidation of rapeseed oil methyl ester reduced the iodine amount by about 10%–30%. Hardening of the fluxed bitumen generally results in an increase of the resins content and a reduction of the aromatics and asphaltenes. In the temperature range of 0 °C to 40 °C, bio-flux results with a much higher increase in the phase angle than in temperatures above 40 °C in the bitumen binder. The increase in the proportion of the viscous component in the low and medium binder temperature is favorable due to the potential improvement of the fatigue resistance of the asphalt mixture with such binders. View Full-Text
Keywords: bio-oil; bio-flux; oxypolymerization; reclaim asphalt pavement (RAP); warm mix asphalt (WMA) bio-oil; bio-flux; oxypolymerization; reclaim asphalt pavement (RAP); warm mix asphalt (WMA)
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Król, J.B.; Niczke, Ł.; Kowalski, K.J. Towards Understanding the Polymerization Process in Bitumen Bio-Fluxes. Materials 2017, 10, 1058.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Materials EISSN 1996-1944 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top