Gypsum production generates wastes in the productive chain during the extraction of the clay cap on the gypsum and in the products manufacturing. The objective of this study was to make possible the reuse of two different types of wastes from the Polo Gesseiro of Araripe in red ceramics. 5 and 10% by mass of gypsum waste was incorporated into the clay waste. The specimens were molded through uniaxial pressing and then dried at 110 ºC for 24h, sintered at 850 ºC, 950 ºC and 1050 ºC for 2h. Linear shrinkage, water absorption, apparent porosity, loss on ignition and flexural strength were evaluated in the specimens. The results indicated that the best performance was obtained in sintered composites at 850 ºC. The formation of new phases in the sintered ceramic bodies was obtained by increasing the temperature and adding the gypsum waste. The presence of crystalline calcium phases indicates that reactions occurred between calcium sulfate and oxides of the material. The incorporation of gypsum waste into clay waste for the production of ceramic composites allowed the reduction of environmental impacts in the gypsum production chain.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.