The role of dissolved rice husk ash in the development of binary blast furnace slag-sewage sludge ash alkali-activated mortars
[EN] This study evaluated the compressive strength performance and microstructure of binary blast furnace slag-sewage sludge ash (BFS-SSA) alkali-activated mortars, in which rice husk ash (RHA) was dissolved in NaOH solution to replace commercial sodium silicate. The dissolution of RHA, performed in...
| Autores: | , , , , , |
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| Tipo de documento: | artigo |
| Data de publicação: | 2022 |
| País: | España |
| Recursos: | Universitat Politècnica de València (UPV) |
| Repositório: | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia |
| Idioma: | inglês |
| OAI Identifier: | oai:riunet.upv.es:10251/193624 |
| Acesso em linha: | https://riunet.upv.es/handle/10251/193624 |
| Access Level: | Acceso aberto |
| Palavra-chave: | Alkaline activation Rice husk ash Sodium silicate suspensions Sewage sludge ash Blast furnace slag Microstructure INGENIERIA DE LA CONSTRUCCION 09.- Desarrollar infraestructuras resilientes, promover la industrialización inclusiva y sostenible, y fomentar la innovación |
| Resumo: | [EN] This study evaluated the compressive strength performance and microstructure of binary blast furnace slag-sewage sludge ash (BFS-SSA) alkali-activated mortars, in which rice husk ash (RHA) was dissolved in NaOH solution to replace commercial sodium silicate. The dissolution of RHA, performed in a thermal bottle with NaOH solution, enhanced the compressive strength of the alkali-activated mortars based on BFS up to 4.5-fold. BFS-SSA based mortars (10¿40% SSA), activated with NaOH/RHA-based sodium silicate suspensions, reached a compressive strength up to 30 MPa after 28 curing days at 20¿C. The RHA dissolution enhanced the strength and sustainability of the BFS-SSA alkali-activated mortars. |
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