Peat Fibers and Finely Ground Peat Powder for Application in Asphalt
In this study, the feasibility of a natural peat fiber and finely ground peat powder as a modifier for bitumen was investigated. Initially, the as-received peat material was characterized in detail: the material was ground to various degrees, separated into fiber and powder fractions, and the gradat...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-01-01
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| Series: | Infrastructures |
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| Online Access: | http://www.mdpi.com/2412-3811/4/1/3 |
| _version_ | 1811320667653537792 |
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| author | Patricia Kara De Maeijer Hilde Soenen Wim Van den bergh Johan Blom Geert Jacobs Jan Stoop |
| author_facet | Patricia Kara De Maeijer Hilde Soenen Wim Van den bergh Johan Blom Geert Jacobs Jan Stoop |
| author_sort | Patricia Kara De Maeijer |
| collection | DOAJ |
| description | In this study, the feasibility of a natural peat fiber and finely ground peat powder as a modifier for bitumen was investigated. Initially, the as-received peat material was characterized in detail: the material was ground to various degrees, separated into fiber and powder fractions, and the gradation of the powder fraction as well as the size of the fibers were determined. A possible solubility in bitumen, the moisture content, and the density of both fractions were evaluated, and a limited chemical characterization of the fibers was conducted. Secondly, the rheological behavior of the powder and the fibers when blended with bitumen was evaluated. Additionally, a limited asphalt study was conducted. The rheological data showed the stiffening effects of the powder fraction and the presence of a fiber network, which were obvious as a plateau modulus towards lower frequencies. The fiber network was strain-dependent and showed elastic effects. This was further confirmed by the multiple stress creep recovery (MSCRT) tests. These tests also indicated that the fibers should improve the rutting resistance, although it was not possible to confirm this in asphalt rutting tests. Asphalt drainage tests demonstrated that adding dry peat, whether this is ground or not, is effective in reducing the binder drainage. However, the data also revealed that the amount of added peat fibers and powder should be limited to avoid difficulties in the compaction of these asphalt mixes. |
| first_indexed | 2024-04-13T13:03:30Z |
| format | Article |
| id | doaj.art-de9f61f44619467f9d7e6dcef78c7309 |
| institution | Directory Open Access Journal |
| issn | 2412-3811 |
| language | English |
| last_indexed | 2024-04-13T13:03:30Z |
| publishDate | 2019-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Infrastructures |
| spelling | doaj.art-de9f61f44619467f9d7e6dcef78c73092022-12-22T02:45:51ZengMDPI AGInfrastructures2412-38112019-01-0141310.3390/infrastructures4010003infrastructures4010003Peat Fibers and Finely Ground Peat Powder for Application in AsphaltPatricia Kara De Maeijer0Hilde Soenen1Wim Van den bergh2Johan Blom3Geert Jacobs4Jan Stoop5EMIB Research Group, Faculty of Applied Engineering, University of Antwerp, 2020 Antwerp, BelgiumNynas NV, Bitumen Research, 2020 Antwerp, BelgiumEMIB Research Group, Faculty of Applied Engineering, University of Antwerp, 2020 Antwerp, BelgiumEMIB Research Group, Faculty of Applied Engineering, University of Antwerp, 2020 Antwerp, BelgiumEMIB Research Group, Faculty of Applied Engineering, University of Antwerp, 2020 Antwerp, BelgiumEMIB Research Group, Faculty of Applied Engineering, University of Antwerp, 2020 Antwerp, BelgiumIn this study, the feasibility of a natural peat fiber and finely ground peat powder as a modifier for bitumen was investigated. Initially, the as-received peat material was characterized in detail: the material was ground to various degrees, separated into fiber and powder fractions, and the gradation of the powder fraction as well as the size of the fibers were determined. A possible solubility in bitumen, the moisture content, and the density of both fractions were evaluated, and a limited chemical characterization of the fibers was conducted. Secondly, the rheological behavior of the powder and the fibers when blended with bitumen was evaluated. Additionally, a limited asphalt study was conducted. The rheological data showed the stiffening effects of the powder fraction and the presence of a fiber network, which were obvious as a plateau modulus towards lower frequencies. The fiber network was strain-dependent and showed elastic effects. This was further confirmed by the multiple stress creep recovery (MSCRT) tests. These tests also indicated that the fibers should improve the rutting resistance, although it was not possible to confirm this in asphalt rutting tests. Asphalt drainage tests demonstrated that adding dry peat, whether this is ground or not, is effective in reducing the binder drainage. However, the data also revealed that the amount of added peat fibers and powder should be limited to avoid difficulties in the compaction of these asphalt mixes.http://www.mdpi.com/2412-3811/4/1/3peatasphaltrheologydrainagewet processrutting |
| spellingShingle | Patricia Kara De Maeijer Hilde Soenen Wim Van den bergh Johan Blom Geert Jacobs Jan Stoop Peat Fibers and Finely Ground Peat Powder for Application in Asphalt Infrastructures peat asphalt rheology drainage wet process rutting |
| title | Peat Fibers and Finely Ground Peat Powder for Application in Asphalt |
| title_full | Peat Fibers and Finely Ground Peat Powder for Application in Asphalt |
| title_fullStr | Peat Fibers and Finely Ground Peat Powder for Application in Asphalt |
| title_full_unstemmed | Peat Fibers and Finely Ground Peat Powder for Application in Asphalt |
| title_short | Peat Fibers and Finely Ground Peat Powder for Application in Asphalt |
| title_sort | peat fibers and finely ground peat powder for application in asphalt |
| topic | peat asphalt rheology drainage wet process rutting |
| url | http://www.mdpi.com/2412-3811/4/1/3 |
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