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Advisor(s)
Abstract(s)
This study uses waste materials, specifically diatomaceous earth (DE) that is rich in aluminum and silica, as a sustainable source for aluminosilicate precursors in geopolymers to replace conventional cement in mortar applications. While the use of DE shows promising results, it lacks sufficient alumina content, thereby demanding the introduction of alumina powder. However, the effectiveness of this addition is limited, as unreacted alumina particles were observed in the X-ray diffraction and SEM analyses. This could potentially impact various geopolymer properties due to the incomplete achievement of the desired silicon/aluminum (Si/Al) ratio. Achieving the appropriate Si/Al balance remains crucial for geopolymers to realize their potential as environmentally friendly alternatives to Portland cement.
Description
Keywords
Geopolymer Alumina Diatomaceous earth
Pedagogical Context
Citation
Murta, Júlia; Silva, Ana Paula da; Santos, Carlos Eduardo dos; Macanjo, Debora; Gomes, Helder (2023). The Effect of Adding Alumina to Diatomaceous Earth-Based Geopolymers. Engineering Proceedings. e-ISSN 2673-4591. 56:1, p. 1-6
Publisher
MDPI