The mechanism of glass foaming with water glass

• Mixture of glass powder and water is atmosphere sensitive. Reaction with CO 2 results in the formation carbonates. Newly formed carbonates are main source expansion gas (CO ). New mechanism foaming proposed. Water a common additive process direct glass, however, currently accepted lacks experimental validation. A mixture waste cathode ray tube panel was investigated for its evolution behavior via hot stage microscopy thermogravimetry coupled mass spectroscopy, respectively. The significant amount during heating detected an overwhelming presence within pores foamed confirmed chromatography. With this investigation, we reveal underlying mechanism, where carbonate phase forms after mixing later acts as agent. unveiled could help further research field potential to produce more sustainable materials better performance less energy-demanding processes.