MOLD FOR MOLDING THROUGH-HOLE OF CONCRETE MOLDED OBJECT

PROBLEM TO BE SOLVED: To provide a mold for molding the through-hole of a concrete molded object can mold the through-hole so that its inner diameter becomes a target diameter over the whole length of the through-hole and can improve workability. SOLUTION: In the mold 10 comprising a composite struc...

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Bibliographische Detailangaben
Hauptverfasser:	HASUO KOICHI, ITO TAKEMI, MATSUMOTO KEIJI, SUGAYA KAZUTO, YANAGIURA FUMITAKA, TAKEI KATSUNORI
Format:	Patent
Sprache:	eng
Schlagworte:	PERFORMING OPERATIONS SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG, OR MIXTURESCONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER TRANSPORTING WORKING CEMENT, CLAY, OR STONE
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a mold for molding the through-hole of a concrete molded object can mold the through-hole so that its inner diameter becomes a target diameter over the whole length of the through-hole and can improve workability. SOLUTION: In the mold 10 comprising a composite structure of a pressing expansion body 12 equipped with a rubber expansion pipe 14, the steel cylindrical body 34 arranged in the outer peripheral side of the rubber expansion pipe 14 and divided into three steel pieces 34-1, 34-2 and 34-3 having a circular arc shape and the extrapolation tube 36, which includes elasticity, extrapolated to the outside of the steel cylindrical body 34 and set to a form to mold the through-hole to the concrete molded object, a flexible cylindrical body 32 is provided as a cylindrical expansion limiter for prescribing the maximum expansion limit of the rubber expansion pipe 14. COPYRIGHT: (C)2009,JPO&INPIT