Research on using aluminum slag to produce bricks oriented for cultural works

Abstract

Currently, aluminum is produced by two basic methods, included: directly production from bauxite and recycling from aluminum scrap. The aluminum recycling process arises aluminum slag, which pollutes the environment. However, this waste has high aluminum oxide content and can become a potential raw material for the production of fired materials. This article presents the results of research on using aluminum slag to produce bricks oriented for cultural works. In the study, aluminum slag with a content of 40 to 60% was used, and brick samples were formed by the semi-dry method. The results show that the brick products have quite beautiful surfaces, high compressive strength of about 400kG/cm², and water absorption of 10 to 12%, meeting technical requirements according to TCVN 1451:1998. This study could contribute to solving environmental problems in aluminum recycling craft villages in Vietnam.