resumo
Coral reefs are vital to marine ecosystems, providing habitat and protection for marine life and serving as natural barriers against coastal erosion. However, coral degradation due to climate change, coastal development, and marine exploration require alternatives like artificial corals. This study explores the use of geopolymers based on industrial waste, specifically biomass fly ash and red mud, for creating artificial corals. Geopolymers offer an eco-friendly solution by repurposing waste materials and providing resistance to environmental stressors like saline water. This research investigates the mineralogical and mechanical properties of geopolymers formed using 3D printing and casting. The 3D-printed samples exhibited compressive strengths ranging from 4 to 10 MPa, sufficient to withstand marine environmental stresses, although lower than the 20 to 30 MPa observed in cast samples. The mineralogical analysis showed the presence of compatible phases including hematite and calcium carbonate, which enhance environmental compatibility. The study highlights the potential of waste-based geopolymers as sustainable materials for artificial corals, emphasizing the benefits of using 3D printing to generate complex geometries and endow marine integration.
palavras-chave
RED MUD; ENVIRONMENT; STABILITY
categoria
Science & Technology - Other Topics; Metallurgy & Metallurgical Engineering
autores
Martins, JR; Novais, RM; Hotza, D; Labrincha, JA; Senff, L
nossos autores
João António Labrincha Baptista
Professor Catedrático
Luciano Senff
Bolseiro de pós-Doutoramento
Rui Miguel Novais
Professor AuxiliarProjectos
CICECO - Aveiro Institute of Materials (UIDB/50011/2020)
CICECO - Aveiro Institute of Materials (UIDP/50011/2020)
Associated Laboratory CICECO-Aveiro Institute of Materials (LA/P/0006/2020)
agradecimentos
This work was developed within the scope of the project CICECO-Aveiro Institute of Materials, UIDB/50011/2020 (DOI 10.54499/UIDB/50011/2020), UIDP/50011/2020 (DOI 10.54499/UIDP/50011/2020), and LA/P/0006/2020 (DOI 10.54499/LA/P/0006/2020), financed by national funds through the FCT/MCTES (PIDDAC). The authors would like to thank FCT project MAXIMUM (PTDC-CTM-CTM-2205-2020, DOI 10.54499/PTDC/CTM-CTM/2205/2020) and to Capes-PrInt, Project number 88881.310728/2018-01.