PURPOSE: To obtain a cut-off work for water leakage around the separators of a concrete structure imply and exactly without the needs for drilling.
CONSTITUTION: A viscoelastic abutment part 4 having a cut-off agent injection hole and air hole 9 is attached under a condition that it abuts on the surface of a concrete wall 1 to the end of a separator 2 left in a concrete structure through a connector 5. A cut-off resin (hydrophilic one-component type polyurethane prepolymer) is injected through the cut-off resin injection hole to pack it into the remaining recession on the end of the separator and the aperture around the separator. Air is removed from the recession 3 through the hole 9, the injection hole and the hole 9 are closely closed, the resin is kept until hardened by polymerization, and the abutment part 4 and the connector 5 are removed.
MIURA MASANOBU
MATSUBAYASHI MATSUHISA
CHUGOKU FUJI KAKO KENSETSU KK