Enhancing physical-thermal-mechanical properties of fired clay bricks by eggshell as a bio-filler and flux
Abstract
Fired clay bio-bricks were prepared by adding eggshell as a bio-filler and flux into earthenware clay compounds via an extrusion process. In this study, the suitable conditions for clay bricks preparation were firing at 1000 oC for a period of 5 h. Adding 20 wt% eggshell powder into the clay brick yielded good physical-mechanical-thermal properties: high compressive strength and hardness, low thermal expansion coefficient, and low water absorption. The measured compressive strength, hardness, and refractory water absorption were 7.0 MPa, 6.0 HV, and less than 15 wt%, respectively. The obtained clay brick with the eggshell powder added as shown here is potential for uses as bricks for construction and thermal insulation.
Copyright
Authors retain copyright of the published article and have the right to use the article in the ways permitted to third parties under the Creative Commons Attribution 4.0 International license. Full bibliographic information (authors, article title, journal title, volume, issue, pages) about the original publication must be provided and a link must be made to the article's DOI. This license allows to copy and redistribute the material in any medium or format, remix, transform, and build upon it for any purpose, even commercially, as long as appropriate credit is given to the original author(s), a link to the license is provided and it is indicated if changes were made.