Red Mud Mortars: A Sustainable Solution for the Restoration of Contemporary Buildings
This study delves into the use of red mud-derived mortars as an innovative approach to restoring contemporary edifices, balancing aesthetic considerations with functional benefits. Red mud, a by-product generated during alumina production, poses a major environmental challenge owing to its highly al...
| Autores: | , , , , |
|---|---|
| Formato: | capítulo de livro |
| Fecha de publicación: | 2025 |
| País: | España |
| Recursos: | Universidad de Navarra |
| Repositorio: | Dadun. Depósito Académico Digital de la Universidad de Navarra |
| Idioma: | inglés |
| OAI Identifier: | oai:dadun.unav.edu:10171/117102 |
| Acesso em linha: | https://hdl.handle.net/10171/117102 |
| Access Level: | acceso abierto |
| Palavra-chave: | Red mud mortars: Contemporary buildings |
| Resumo: | This study delves into the use of red mud-derived mortars as an innovative approach to restoring contemporary edifices, balancing aesthetic considerations with functional benefits. Red mud, a by-product generated during alumina production, poses a major environmental challenge owing to its highly alkaline nature and the substantial quantities produced. Nonetheless, this industrial waste holds significant potential for utilization in the construction sector across various applications, such as the development of low-carbon cementitious materials and environmental remediation efforts. Incorporating red mud as a partial replacement for cement not only minimizes the reliance on conventional raw materials like limestone and clay but also aids in preserving natural resources and mitigating the ecological impacts of mining activities. Furthermore, its use contributes to waste reduction and offers an opportunity to lower the construction industry's overall carbon footprint, addressing multiple environmental concerns simultaneously. Red mud in two forms viz. oven dried and incinerated at 300°C were used to prepare cementitious mortars replacing cement partially up to 15% by weight at increment of 5%. Red mud powders were evaluated for pozzolanic activity and photocatalytic activity for environmental pollutant gas removal. The mortars incorporating red mud were evaluated for strength and hydration kinetics at early-stage of hydration. The study demonstrated that red mud powders exhibit higher efficacy in air purification, particularly in the reduction of nitrogen oxide concentrations. The investigated mortars can be utilized to match the appearance of red brick or sandstone, making them suitable for repairs on modern architecture buildings and constructions from the last two centuries that require careful restoration. |
|---|