| 摘要 |
PURPOSE: A yellow earth board is provided to improve productivity and workability by simplifying a manufacturing process and to improve convenience by using incombustible materials. CONSTITUTION: A yellow earth board is manufactured as follows. Yellow earth is spread. One-third of water is sprayed on the spread yellow earth. The process is repeated. The yellow earth is compressed using a high-pressure press. The compressed yellow earth board is dried with 30°C for a day. The yellow earth board is dried with 60°C for a day. The yellow earth board is dried with 80°C for a day. |
