CONCRETE PLACING METHOD OF VERTICAL SKELETON PART BY POST-PLACING CONSTRUCTION

摘要

PROBLEM TO BE SOLVED: To solve the problem in increased period of from work, since a form and a concrete force feed port are required to be strongly manufactured for resisting to lateral pressure of concrete, when placing high strength concrete in a vertical construction joint part by post-placing construction by a force feed method.;SOLUTION: A concrete placing method of a vertical skeleton part by post-placing construction, comprises: a process of building up a pair of sheathing boards (a form face bar) on both surface sides of the vertical skelton part; a process of arranging an air bleeding hose along the thickness direction of the vertical skeleton part along a preceding skeleton constructed above the sheathing boards; a process of opening a concrete input opening part over a plurality of stages in the height direction in one of the pair of built-in sheathing boards; a process A of making concrete flow in at a first concrete placing speed from a lower side concrete input opening part provided in one sheathing board; and a process B of making the concrete flow in by repeating flowing-in of the concrete at a second concrete placing speed slower than the first concrete placing speed from an upper side concrete input opening part provided in the sheathing board.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2018,JPO&INPIT