Synthesis of recycled cements using hydrothermally treated waste soda lime glass

Hidetoshi MIYAZAKI; Masaaki YOSHIKAWA; Daiki ATARASHI; Hidekazu TANAKA; Toshitaka OTA

doi:10.2109/jcersj2.16229

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Synthesis of recycled cements using hydrothermally treated waste soda lime glass

Hidetoshi MIYAZAKI, Masaaki YOSHIKAWA, Daiki ATARASHI, Hidekazu TANAKA, Toshitaka OTA

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Keywords: Waste glass, Soda lime glass, Cement, Hydrothermal treatment

JOURNAL FREE ACCESS

2017 Volume 125 Issue 1 Pages 55-56

DOI https://doi.org/10.2109/jcersj2.16229

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Abstract

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.

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