| 摘要 |
PROBLEM TO BE SOLVED: To provide a manufacturing method of precast concrete beams which can control mold cost, mass-produce in a short period of time and reduce transport cost to the minimum. SOLUTION: The manufacturing method of precast concrete beams allows to reuse a U-shape bent steel strip mold by giving it simple exfoliation treatment, and easily removing the precast concrete beam by extremely slightly extending the upper end of the steel mold when breaking the mold. COPYRIGHT: (C)2008,JPO&INPIT
|
