| 摘要 |
<p>PURPOSE:To easily obtain a light-weight formed material having high bending strength and workability at a low cost by incorporating glassy blast furnace slag powder with a clay mineral, an alkali hydroxide and water, incorporating the obtained slurry with glassy blast furnace slag powder, clay mineral and reinforcing fiber and subjecting to hydrothermal treatment in a specific state. CONSTITUTION:This formed material is produced by incorporating glassy blast furnace slag powder with a clay mineral, an alkali hydroxide and water, subjecting the mixture to hydrothermal treatment, adding glassy blast furnace slag powder, clay mineral and reinforcing fiber to the obtained hydrate slurry, kneading and forming the mixture and subjecting to hydrothermal curing. Hydrothermal reaction of the stag with the clay mineral takes place by the addition of glassy blast furnace slag powder, clay mineral, alkali hydroxide and water, followed by hydrothermal treatment. The surface of particle is modified to porous state by this treatment to obtain light-weight particle having large specific surface area. The clay mineral plays the role of the silica source for the formation of calcium silicate hydrate. When bentonite is used as the clay mineral, water is taken into the gap between the layers of montmorillonite constituting the main mineral component of the bentonite to contribute to the reduction of weight.</p> |
