| 摘要 |
PROBLEM TO BE SOLVED: To structurally prevent a building frame part from collapsing into small and medium lumps in natural demolition of a concrete building. SOLUTION: At least one piece of reinforcing fiber is stuck to each particle of crushed stone, i.e. a coarse aggregate of concrete, to produce a united product of them. Thus yielded "crushed stone with reinforcing fiber" in a necessary amount is charged and mixed in preparing ready-mixed concrete. The resultant ready-mixed concrete forms a building frame part wherein the reinforcing fiber is uniformly dispersed throughout placed concrete. Even when thus formed concrete is collapsed into small lumps, the lumps are tied together, supported, and prevented from falling down, preventing secondary accidents. COPYRIGHT: (C)2005,JPO&NCIPI
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