| 摘要 |
PROBLEM TO BE SOLVED: To eliminate correction work by a surface water percentage and to make strength uniform by making the surface of fine aggregate to be used be saturated with water mechanically in advance. SOLUTION: In the production of permeable mortar by spraying, the fine aggregate B is dried by a drying means C, and the aggregate of a given particle size sorted by a particle size adjusting means E is used.
|
