Utilization of calcite and waste glass for preparing construction materials with a low environmental load

作者：Maeda Hirotaka^*; Imaizumi Haruki; Ishida Emile Hideki

来源：Journal of Environmental Management, 2011, 92(11): 2881-2885.

DOI：10.1016/j.jenvman.2011.06.021

• Calcite
• Glass
• Hydrothermal treatment
• Porous materials

In this study, porous calcite materials are hydrothermally treated at 200 degrees C using powder compacts consisting of calcite and glasses composed of silica-rich soda-lime. After treatment, the glasses are converted into calcium aluminosilicate hydrates, such as zeolite phases, which increase their strength. The porosity and morphology of new deposits of hydrothermally solidified materials depend up on the chemical composition of glass. The use of calcite and glass in the hydrothermal treatment plays an important role in the solidification of calcite without thermal decomposition.