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Evaluation of the Red Mud and Quartz Sand on Reinforced Metazeolite-based Geopolymer Composites by Aygörmez, Yurdakul (author) is a Engineering article available to read on EtoBox.

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In the production of geopolymer, which is an environmentally friendly material, it is important to use products with different binding material potential. Zeolite, which is a natural and common, and low-cost material, and red mud (RM), which is a by-product in the alumina refining industry, were used as binding materials. Calcined zeolite (metazaeolite (MZ)) was replaced with red mud in four different proportions (25%, 50%, 75%, and 100% by wt.). Besides, standard sand was replaced with quartz sand (QS) as a different aggregate in five different proportions (20%, 40%, 60%, 80%, and 100% by wt.). The mechanical properties (compressive strength, flexural strength, ultrasonic pulse velocity (UPV)) of the prepared 10 series were investigated in three different days (7, 28, and 56). In addition, the samples were subjected to the high-temperature test (250, 500, and 750 • C) and the freeze-thaw test of 400 cycles after 56 days. After the durability tests were completed, the strength, UPV, and weight loss were determined. In addition, SEM analyzes were performed before and after the high-temperature and freeze-thaw tests. According to the results, it was seen that the use of red mud at a

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Author

Aygörmez, Yurdakul (author)

Publisher

Elsevier BV

Published

2021

Language

EN

Field

Engineering (Physical Sciences)