Study on manufacturing high alumina insulating bricks from high aluminum material and organic foaming agents

Abstract

This study assesses a study on the manufacturing of high alumina insulating bricks from high aluminum materials such as high-alumina cement, chamotte powder, fly ash, and organic foam agents using a foam concrete production process. The research was based on several calculation models to design the mix for foam concrete, taking into account the required foam concrete density, the bulk density of the materials, and the quality of the foam agent used for manufacturing insulating bricks. The study was investigated the mix composition for high-alumina bricks with cement content ranging from 40% to 60% by weight and the incorporation of fly ash as a replacement at 10% and 20% by weight. Scanning Electron Microscopy (SEM) images were utilized to determine the distribution structure of the foam in the high-alumina bricks. The produced insulating bricks met the requirements of TCVN 7637:2007. This product is suitable for use as lightweight thermal insulating material in the refractory industry, construction, and other high-temperature environments.