To obtain aggregate having a particle size distribution suitable for ready mixed-concrete by crushing a concrete structure with a hammering crusher under a prescribed operation condition in the use of the crushed material of the concrete structure as the aggregate for the ready mixed-concrete.
In this method, the existing concrete structure is crushed by controlling the operation condition of the hammering force, the attaching interval or crushing pitch of a crushing edge attached to the crusher to the prescribed condition and after the particle size distribution of the crushed material is measured to compare the particle size distribution of the aggregate required by the concrete to be placed, the operation condition of the crusher is adjusted to obtain the crushed material having the particle size distribution required by the concrete to be placed and the concrete structure is crushed by the operation condition.
COPYRIGHT: (C)2005,JPO&NCIPI
Shigeru Shinohara
Hiroyuki Suda
| JP2003190827A | ||||
| JP1111759A |