Characteristics of Artificial Atone Produced from Boiler Ash and Its Treatment Methods

Nuruyu Takayuki, Fukuoka Daizo, Kudo Keita

doi:10.2524/jtappij.78.1036

<p>Approximately 32.4％ of Japan’s total power generation is derived from coal thermal power and biomass thermal power plants, producing about 12 million tons of combustion ash annually. While this ash is primarily used as a raw material for cement, its application as recycled aggregate material in civil engineering has not significantly expanded. To promote its utilization, we successfully endowed artificial stone made from combustion ash with multifunctional properties. This functional artificial stone exhibits high resistance to soil liquefaction, making it effective as lightweight embankment material. Its water absorption makes it suitable for construction during rainy conditions. Additionally, it possesses water purification capabilities, protecting residential and industrial areas from groundwater contamination. The nutrient ion adsorption properties enhance plant compatibility, benefiting green spaces and aquatic vegetation. Furthermore, the production process absorbs carbon dioxide, contributing to carbon neutrality. This environmentally friendly technology enhances resource recycling and is expected to mitigate natural disaster damage while improving living environments. This functional civil engineering material has already been proven effective as subgrade material, base course material, and backfill material, and it is expected to further contribute to mitigating natural disaster damage and improving living environments in the future.</p>

Characteristics of Artificial Atone Produced from Boiler Ash and Its Treatment Methods

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