| 摘要 |
PROBLEM TO BE SOLVED: To prevent cracking of an inter-column wall by improving a wall panel. SOLUTION: Water is added to a composition comprising tuff loam, cement, aluminum powder and pearlite as essential components, and kneaded and solidified. Hydrogen gas is thereby generated in a hydration process of cement after mixing cement, aluminum powder and water. Since this hydrogen gas is confined in a cement hydrate product, the cement hydrate product expands, that is, expansion pressure is generated inside the inter-column wall. When the inter-column wall becomes dry and shrinks, the amount of drying shrinkage is reduced by the expansion pressure portion to prevent cracking caused by drying shrinkage. COPYRIGHT: (C)2004,JPO&NCIPI |
