Laboratory Study on Influence of Blending Conditions on Chemo-Thermal Characteristics of Lignin-Modified Bitumen
Environmental approaches in the asphalt industry have focused on utilizing waste materials as modifiers. Lignin is a high-potential bitumen modifier due to its characteristics; however, the blending process with bitumen is critical. This study investigates the chemo-thermal characteristics of lignin...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-06-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/13/13/7766 |
| _version_ | 1797592150488121344 |
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| author | Ali Rezazad Gohari Sébastien Lamothe Jean-Pascal Bilodeau Ahmad Mansourian Alan Carter |
| author_facet | Ali Rezazad Gohari Sébastien Lamothe Jean-Pascal Bilodeau Ahmad Mansourian Alan Carter |
| author_sort | Ali Rezazad Gohari |
| collection | DOAJ |
| description | Environmental approaches in the asphalt industry have focused on utilizing waste materials as modifiers. Lignin is a high-potential bitumen modifier due to its characteristics; however, the blending process with bitumen is critical. This study investigates the chemo-thermal characteristics of lignin-modified bitumen under two different blending protocols, including a mechanical and high-shear mixer to evaluate its performance as a modifier. According to the protocols, 5, 10, and 20% of Kraft lignin was added to a PG 58S−28 bitumen. The samples were subjected to analysis using Brookfield Rotational Viscosity (BRV), Dynamic Shear Rheometer (DSR), Fourier-Transform Infrared Spectroscopy (FTIR), Environmental Scanning Electron Microscopy (ESEM), Thermogravimetric Analysis (TGA), and Differential Scanning Calorimetry (DSC) tests. The BRV and DSR test results indicate a remarkable alteration in the rheological properties of lignin-modified bitumen under blending conditions. The FTIR analysis indicated that Kraft lignin did not produce new functional groups. The fibril structures of the bitumens are affected by Kraft lignin content and blending conditions due to ESEM. The Kraft lignin and blending conditions influence the thermal behavior of bitumen. The findings highlight Kraft lignin’s potential as a bitumen modifier, and the fact that its characteristics are influenced by the blending protocol and Kraft lignin content. |
| first_indexed | 2024-03-11T01:47:24Z |
| format | Article |
| id | doaj.art-b95709d7263740ebbef8526d6749d3ce |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-11T01:47:24Z |
| publishDate | 2023-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-b95709d7263740ebbef8526d6749d3ce2023-11-18T16:11:06ZengMDPI AGApplied Sciences2076-34172023-06-011313776610.3390/app13137766Laboratory Study on Influence of Blending Conditions on Chemo-Thermal Characteristics of Lignin-Modified BitumenAli Rezazad Gohari0Sébastien Lamothe1Jean-Pascal Bilodeau2Ahmad Mansourian3Alan Carter4Département de Génie de La Construction, École de Technologie Supérieure (ÉTS), Montréal, QC H3C 1K3, CanadaDépartement de Génie de La Construction, École de Technologie Supérieure (ÉTS), Montréal, QC H3C 1K3, CanadaDépartement de Génie Civil et de Génie Des Eaux, Université Laval, Québec, QC G1V 0A6, CanadaBitumen and Asphalt Department, Road, Housing and Urban Development Research Center, Tehran P9R8+47Q, IranDépartement de Génie de La Construction, École de Technologie Supérieure (ÉTS), Montréal, QC H3C 1K3, CanadaEnvironmental approaches in the asphalt industry have focused on utilizing waste materials as modifiers. Lignin is a high-potential bitumen modifier due to its characteristics; however, the blending process with bitumen is critical. This study investigates the chemo-thermal characteristics of lignin-modified bitumen under two different blending protocols, including a mechanical and high-shear mixer to evaluate its performance as a modifier. According to the protocols, 5, 10, and 20% of Kraft lignin was added to a PG 58S−28 bitumen. The samples were subjected to analysis using Brookfield Rotational Viscosity (BRV), Dynamic Shear Rheometer (DSR), Fourier-Transform Infrared Spectroscopy (FTIR), Environmental Scanning Electron Microscopy (ESEM), Thermogravimetric Analysis (TGA), and Differential Scanning Calorimetry (DSC) tests. The BRV and DSR test results indicate a remarkable alteration in the rheological properties of lignin-modified bitumen under blending conditions. The FTIR analysis indicated that Kraft lignin did not produce new functional groups. The fibril structures of the bitumens are affected by Kraft lignin content and blending conditions due to ESEM. The Kraft lignin and blending conditions influence the thermal behavior of bitumen. The findings highlight Kraft lignin’s potential as a bitumen modifier, and the fact that its characteristics are influenced by the blending protocol and Kraft lignin content.https://www.mdpi.com/2076-3417/13/13/7766kraft ligninlignin-modified bitumenmechanical mixerhigh-shear mixerchemo-thermal characteristicssustainable asphalt materials |
| spellingShingle | Ali Rezazad Gohari Sébastien Lamothe Jean-Pascal Bilodeau Ahmad Mansourian Alan Carter Laboratory Study on Influence of Blending Conditions on Chemo-Thermal Characteristics of Lignin-Modified Bitumen Applied Sciences kraft lignin lignin-modified bitumen mechanical mixer high-shear mixer chemo-thermal characteristics sustainable asphalt materials |
| title | Laboratory Study on Influence of Blending Conditions on Chemo-Thermal Characteristics of Lignin-Modified Bitumen |
| title_full | Laboratory Study on Influence of Blending Conditions on Chemo-Thermal Characteristics of Lignin-Modified Bitumen |
| title_fullStr | Laboratory Study on Influence of Blending Conditions on Chemo-Thermal Characteristics of Lignin-Modified Bitumen |
| title_full_unstemmed | Laboratory Study on Influence of Blending Conditions on Chemo-Thermal Characteristics of Lignin-Modified Bitumen |
| title_short | Laboratory Study on Influence of Blending Conditions on Chemo-Thermal Characteristics of Lignin-Modified Bitumen |
| title_sort | laboratory study on influence of blending conditions on chemo thermal characteristics of lignin modified bitumen |
| topic | kraft lignin lignin-modified bitumen mechanical mixer high-shear mixer chemo-thermal characteristics sustainable asphalt materials |
| url | https://www.mdpi.com/2076-3417/13/13/7766 |
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