METHOD FOR FORMING HOLE PART ON CURABLE COMPONENT AND EASILY HYDROLYZABLE BOLT THEREFOR

PROBLEM TO BE SOLVED: To carry out easily accurately hole part-forming operation by a method wherein a decomposable component is buried in a hole part-forming part of a curable component, and the decomposable component is removed after curing the curable component. SOLUTION: A decomposable component...

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Bibliographische Detailangaben
Hauptverfasser:	AKAGI NORIYUKI, FUJIE HIROKI
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING BUILDING BUILDING IMPLEMENTS OR OTHER BUILDING AIDS, OR THEIRUSE CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS ORMACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS,CLIPS, WEDGES, JOINTS OR JOINTING ENGINEERING ELEMENTS AND UNITS FIXED CONSTRUCTIONS FORMS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HANDLING BUILDING MATERIALS ON THE SITE HEATING LIGHTING MECHANICAL ENGINEERING METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTINGBUILDINGS SCAFFOLDING SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG, OR MIXTURESCONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER SHUTTERING THEIR PREPARATION OR CHEMICAL WORKING-UP THERMAL INSULATION IN GENERAL TRANSPORTING USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS WEAPONS WORKING CEMENT, CLAY, OR STONE
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To carry out easily accurately hole part-forming operation by a method wherein a decomposable component is buried in a hole part-forming part of a curable component, and the decomposable component is removed after curing the curable component. SOLUTION: A decomposable component is composed of easy hydrolyzable resin composition consisting of 95-99.5wt.% of thermoplastic polyester and 0.5-5.0wt.% of phosphite compound. For example, a bolt is made of this composition. The bolt is set at a position in a shuttering being a hole part forming scheduled part of a curable component of concrete or the like. Then, the curable component is allowed to stand still until it is cured by being casted into the shuttering. Thereafter, it is completely cured. By jetting steam at 120-250 deg.C temperature onto the bolt quickly after being cured, the bolt is hydrolyzed and removed. Consequently a suitable hole part is formed at that position.