Abstract
Because the fly ash will produce large amounts of the secondary waste emission after the extraction of aluminum, the utilization of the fly ash residue after the extraction of aluminum has great significance. The autoclaved fly ash bricks studied in this paper use CFB ash residue after extraction of aluminum as the main material, and calcium carbide clay which consists mainly of calcium hydroxide is the waste residua of the production of acetylene gas in the chemical plants. This paper analyzes the chemical composition, the mineral composition and the microstructure of the fly ash residue after extraction of aluminum. In the paper, we also study the law and impacts of compressive strength, flexural strength, frost resistance and water absorption, which are made by calcium carbide clay for the autoclaved fly ash bricks. Experimental results illustrate that calcium carbide clay can significantly improve the compressive strength, the flexural strength and the frost resistance of the coal fly ash autoclaved bricks, and significantly reduce its water absorption.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
