PLASTIC MICRO PACKER AND CONSTRUCTION METHOD USING IT

摘要

Disclosed are a plastic micro packer for repairing cracks of structure and a method for repairing middle or low pressure cracks using the plastic micro packer: The micro packer is connected to a hole (101) formed in a crack (110) to inject repairing solution (200) into the crack (110) of a concrete structure, and includes: a hollow rubber sleeve (30) having a screw portion (31) formed on the inner surface thereof; a hollow packer body (15) having a screw coupling portion (11) screwed with the screw portion (31) and a nozzle portion (12) connected to a repairing solution injector (300); and a cover member (20) connected to the nozzle portion (12) to prevent leakage of repairing solution (200). The screw portion (31) of the rubber sleeve has a wide top and a narrow bottom, and thereby, is closely contacted to the hole (101) while the lower portion of the screw portion (31) is expanded in a radial direction when the screw coupling portion (11) is screwed with the screw portion. A flange portion (32) is formed at the front end of the rubber sleeve to prevent excessive induction of the rubber sleeve into the hole.