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http://hdl.handle.net/10397/105834
Title: | Optimisation of the preparation procedure of crumb rubber modified bitumen with wax-based additives | Authors: | Wang, H Airey, GD Leng, Z Lu, G |
Issue Date: | 2023 | Source: | Road materials and pavement design, Published online: 24 Mar 2023, Latest Articles, https://doi.org/10.1080/14680629.2023.2191724 | Abstract: | Wax-based additives can be added to crumb rubber modified bitumen (CRMB) at different stages to enhance the workability. This study aims to optimize the preparation procedure by investigating the effects of the preparation procedure on the rheological properties of CRMB containing wax-based additives and the interaction mechanism. Rubber swelling tests under various conditions were conducted to examine the effects of temperature and additives on the interaction process. Rheological and thermal characterizations were performed on the CRMB binder and its liquid phase. Results show that reducing the bitumen viscosity by adding wax-based additives can promote the bitumen-rubber interaction and achieve similar swelling results at a lower temperature. However, a significant proportion of wax-based additives were found to penetrate rubber particles for the warm-produced CRMB. Although warm-produced CRMB may save energies compared to hot-produced CRMB, it is not recommended to replace the traditional hot-produced CRMB procedure. | Keywords: | Crumb rubber modified bitumen Differential scanning calorimetry Preparation procedure Rheology Rubber swelling Wax additive |
Publisher: | Taylor & Francis | Journal: | Road materials and pavement design | ISSN: | 1468-0629 | EISSN: | 2164-7402 | DOI: | 10.1080/14680629.2023.2191724 | Rights: | © 2023 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives License(http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, providedthe original work is properly cited, and is not altered, transformed, or built upon in any way. The terms on which this article has been published allowthe posting of the Accepted Manuscript in a repository by the author(s) or with their consent. The following publication Wang, H., Airey, G. D., Leng, Z., & Lu, G. (2023). Optimisation of the preparation procedure of crumb rubber modified bitumen with wax-based additives. Road Materials and Pavement Design, 1–12 is available at https://doi.org/10.1080/14680629.2023.2191724. |
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Wang_Optimisation_Preparation_Procedure.pdf | 2.49 MB | Adobe PDF | View/Open |
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