Please use this identifier to cite or link to this item:
http://hdl.handle.net/2445/196544
Title: | Sustainable asphalt mixtures by partial replacement of fine aggregates with low-grade magnesium carbonate by-product |
Author: | López-Montero, Teresa Mañosa Bover, Jofre Miró, Rodrigo Chimenos Ribera, Josep Ma. |
Keywords: | Asfalt Àrids (Materials de construcció) Ciència dels materials Asphalt Aggregates (Building materials) Materials science |
Issue Date: | 23-Nov-2022 |
Publisher: | Elsevier |
Abstract: | The utilisation of large quantities of raw materials for asphalt mixtures manufacturing, such as aggregates, is an environmental issue that must be addressed. This concern has led to valorising waste and by-products as more sustainable alternative raw materials. This research is aimed at evaluating the use of a low-grade magnesium carbonate (LG-MC) by-product as a partial replacement of fine aggregates and as a filler of asphalt mixtures. A mechanical analysis has been performed studying the effect of this by-product on the moisture sensitivity, cracking resistance and cohesion loss resistance of asphalt mixtures. Cracking resistance was assessed under different temperatures (20, 5 and -5 ºC) and conditions (unconditioned and aged). Results indicated that moisture sensitivity and cohesion loss resistance of asphalt mixtures with LG-MC by-product were not affected, obtaining similar results to those of the reference mixture. A protective effect in the mixture cracking resistance was observed using LG-MC. At low temperatures or after ageing, this by-product tends to maintain ductility to a greater extent. The study indicates that LG-MC is suitable as a partial substitute for the fine fraction of aggregates, as well as for the total amount of filler in asphalt mixtures manufacturing for road pavements. |
Note: | Reproducció del document publicat a: https://doi.org/10.1016/j.cscm.2022.e01705 |
It is part of: | Case Studies In Construction Materials, 2022, vol. 18, p. 1-14 |
URI: | http://hdl.handle.net/2445/196544 |
Related resource: | https://doi.org/10.1016/j.cscm.2022.e01705 |
ISSN: | 2214-5095 |
Appears in Collections: | Articles publicats en revistes (Ciència dels Materials i Química Física) |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
727320.pdf | 3.99 MB | Adobe PDF | View/Open |
This item is licensed under a Creative Commons License