Development of a CO₂ solidification method for recycling autoclaved lightweight concrete waste

A study on the development of CO₂ solidification method for recycling autocleaved lightweight concrete (ALC) waste was performed. Milling dust of ALC was used as the starting material for the study. A decrease in the peak intensity of the main tobermorite phase was shown by the X-ray diffraction patterns. No difference in the microstructure and the degree of CO₂ solidification at the surface and inside the solidified samples were shown by scanning electron microscopy and optical microscopy.