Muestra métricas de impacto externas asociadas a la publicación. Para mayor detalle:
| Indexado |
|
||||
| DOI | 10.1080/10298436.2024.2400563 | ||||
| Año | 2024 | ||||
| Tipo | artículo de investigación |
Citas Totales
Autores Afiliación Chile
Instituciones Chile
% Participación
Internacional
Autores
Afiliación Extranjera
Instituciones
Extranjeras
Global warming has triggered a series of strategies and efforts to reduce greenhouse gas emissions and increase the reuse and recycling into asphalt pavements. One of these, is the reduction of production temperatures of asphalt mixtures, and the other is using sustainable antioxidants, such as Kraft lignin, with high phenolic content. Kraft lignin is usually mixed at high temperatures without considering the effect of temperature on its antioxidant properties. This research aimed to study the impact of the production temperatures of asphalt mixtures on the thermo-chemical properties of Kraft lignin and its antioxidant capacity. To evaluate these properties, thermogravimetry, infrared spectroscopy, and DPPH tests were done. To validate the results, bitumen-lignin blends were prepared considering representative temperatures for Hot-Mix-Asphalt (HMA), 160 degrees C, and for Warm-Mix-Asphalt (WMA), 135 degrees C. Bitumen-lignin blends were prepared considering 0% and 20% Kraft lignin by total weight bitumen. The blended samples, unaged and aged. were evaluated considering mechanical, rheological, and chemical properties. The main conclusion of the study demonstrated that although Kraft lignin can be used in HMA, using it in mixtures with lower temperatures conserve its properties. WMA production temperatures preserve Kraft lignin's chemical properties, increasing the durability and resilience of bitumen throughout its service life.
| Ord. | Autor | Género | Institución - País |
|---|---|---|---|
| 1 | Marquez, J. Waldo | - |
Pontificia Universidad Católica de Chile - Chile
|
| 2 | Fuentes, Valentina | - |
Pontificia Universidad Católica de Chile - Chile
|
| 3 | Rueda, Eduardo J. | Hombre |
Pontificia Universidad Católica de Chile - Chile
|
| 4 | Tundidor-Camba, Alain | - |
Pontificia Universidad Católica de Chile - Chile
|
| 5 | ESCALONA-BURGOS, NESTOR GUILLERMO | Hombre |
Pontificia Universidad Católica de Chile - Chile
|
| 6 | Norambuena-Contreras, Jose | - |
Universidad del Bío Bío - Chile
Swansea Univ - Reino Unido Swansea University - Reino Unido |
| 7 | GONZALEZ-VACCAREZZA, ALVARO ANDRES | Hombre |
Pontificia Universidad Católica de Chile - Chile
|
| Fuente |
|---|
| Fondo Nacional de Desarrollo Científico y Tecnológico |
| Universidad del Bío-Bío |
| Agencia Nacional de Investigación y Desarrollo |
| National Research and Development Agency |
| National Research and Development Agency (ANID) through the Research Project FONDECYT Regular |
| Constructora Asfalcura SpA |
| Department of Engineering and Construction Management of the Pontifical Catholic University of Chile |
| Agradecimiento |
|---|
| This work was supported by the National Research and Development Agency (ANID) through the Research Project FONDECYT Regular 1211009: Lignin-based recycled asphalt pavements: from nano-scale approach to large-scale application. |
| This work was supported by the National Research and Development Agency (ANID) through the Research Project FONDECYT Regular 1211009: Lignin-based recycled asphalt pavements: from nano-scale approach to large-scale application. The authors thank the University of Bio-Bio for providing Kraft lignin for this work. Also, we express our gratitude to Constructora Asfalcura SpA for delivering the bitumen used in this research. The authors also thank the LabMAT of the University of Bio-Bio and the Construction Material Laboratory of the Department of Engineering and Construction Management of the Pontifical Catholic University of Chile for supporting the tests done with Kraft lignin. Finally, we thank Patricio, Nicol\u00E1s, Bel\u00E9n, and Vicente for their support in the preparation and evaluation of the bitumen-lignin samples. |