Experimental Study on the Flexural Behavior of Alkali Activated Fly Ash Mortar Beams

• Autor(a) principal: Lopes, Adelino V.
• Data de Publicação: 2020
• Outros Autores: Lopes, Sergio M. R., Pinto, Isabel
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
• Texto Completo: http://hdl.handle.net/10316/101322; https://doi.org/10.3390/app10124379
• topic: experimental study; analytical model; reinforced concrete; beams; fly ash alkali activated; bending

This work aims to study the possibility of using alkaline activated fly ash in structural members. The work, of an experimental nature, focuses on the evaluation of the behavior of simply supported beams under two symmetrical loads (four-point tests). For such study, 10 beams were built, of which, five using fly ash and the remaining five using traditional Portland cement. The test results are compared. Conclusions on the practical application of fly ash in structures were explained and, as mention later in this document, there is room for improvement. This is one of very few works on fly ash alkali activated structures and further studies are necessary in the future. Some aspects, such as shrinkage and deformability are presented as some of the negative points concerning the potential use of fly ash. These are two aspects that need more attention in future investigations.