Synthesis of recycled cements using hydrothermally treated waste soda lime glass

抄録

Waste soda lime glass powder was hydrothermally treated twice at 150°C, and the resulting powder was mixed with CaCO₃ powder in the weight ratio of 1:3 and heat-treated at 1450°C. The resulting powder was identified as Ca₃SiO₅ as the main phase with small amounts of Ca₃Al₂O₆, which are both common Portland cement sources. The elemental composition of the resulting cements was evaluated and all minor components (Cl, Na, SO₃, etc.) were found to be less than the JIS standard value for eco-cement.