SLEEVE FOR WHICH FIXATION AND POSITIONING ARE SECURED, AND CONSTRUCTION IS POSSIBLE AFTER MOLD CARPENTERING AND REINFORCING, WITH REGARD TO SLEEVE MADE OF ELASTIC MATERIAL, AND SLEEVE THAT IS FILLED WITH MATERIAL THAT IS EASILY REMOVED AFTER SOME DAYS FROM PLACING CONCRETE SO AS NOT TO LET CONCRETE GET INTO SLEEVE TUBE AND NOT TO BREAK SLEEVE, AND SLEEVE THAT CAN BE DISCRIMINATED DUE TO CENTER GUIDE COLORING, AND LENGTH IS ADJUSTABLE BY JOINTING WITH REGARD TO SLEEVE MADE OF ELASTIC MATERIAL

摘要

PURPOSE:To secure mounting by providing a center guide for mounting, by filling in a material that can be easily removed, and by forming a sleeve tube out of elastic material. CONSTITUTION:A center guide 3 for mounting is provided, and the guide is colored to facilitate the discrimination for use. The flowing-in of concrete into a sleeve tube 1 is prevented, and a material that can be removed after a mold is deconstructed, is filled in, so as not to break the sleeve tube 1, and the sleeve tube 1 is formed out of elastic material. A joint hole is provided on the end surface of the center guide 3, and is connected through a joint pin. Construction can thus be facilitated.