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Peat as an Example of a Natural Fiber in Bitumen

  • Hilde SoenenEmail author
  • Patricia Kara De Maeijer
  • Johan Blom
  • Wim Van den Bergh
Conference paper
Part of the RILEM Bookseries book series (RILEM, volume 20)

Abstract

In this study, the suitability of a natural peat fiber, as a modifier for bitumen was investigated. Peat fibers were dried, ground, and fractionated into a fiber and a granular fraction. Rheological data on peat modified binders indicated that the granular fraction is acting as a filler mainly stiffening the bituminous binders whilst the fiber fraction mainly increases the elastic behavior, which became especially visible at higher service temperatures. It was observed that by changing the ratio of fibers versus granular particles, the rheological behavior can be regulated. In addition, drainage tests were carried out on stone mastic asphalt (SMA) mixes. The data indicated that peat fibers can effectively reduce drainage, and can be used as an alternative for the currently used cellulose fibers.

Keywords

Peat fibers Bitumen Rheology Drainage 

References

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Copyright information

© RILEM 2019

Authors and Affiliations

  • Hilde Soenen
    • 1
    Email author
  • Patricia Kara De Maeijer
    • 2
  • Johan Blom
    • 2
  • Wim Van den Bergh
    • 2
  1. 1.Nynas NV, Bitumen ResearchAntwerpBelgium
  2. 2.Energy and Materials in Infrastructure and Buildings (EMIB), Faculty of Applied EngineeringUniversity of AntwerpAntwerpBelgium

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