| 摘要 |
PROBLEM TO BE SOLVED: To provide a new high efficiency method for placing fresh mixed concrete, which can improve the quality of the concrete and the design of a concrete surface in concrete lining type seismic strengthening work for a concrete bridge pier. SOLUTION: In fresh mixed concrete placing work, a required number of portable fresh mixed concrete hoppers 7 for placing the fresh mixed concrete are arranged on an upper portion of a form 3; and a detachable fresh mixed concrete charging hose 5 with a proper length corresponding to the placing up height of the fresh mixed concrete is mounted in a fresh mixed concrete exhaust port 14 in the lower portion of the hopper 7. A fresh mixed concrete placing location and the placing up height can be easily changed in a short period of time by a hopper placing system for charging the fresh mixed concrete. This enables the great shortening of a placing construction period and an improvement in the quality of the concrete and the design of the concrete surface. COPYRIGHT: (C)2009,JPO&INPIT
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