Grout re- injection method to grout unfilled cavity of PC tendon within the insertion sheath

摘要

PROBLEM TO BE SOLVED: To provide a method for re-injecting grout into a grout unfilled-cavity inside a PC tendon insertion sheath into which more perfect re-injection of the grout is performed in response to status of the cavity.;SOLUTION: A method for re-injecting grout into a grout-unfilled cavity inside a PC tendon insertion sheath comprises the steps of: inspecting an upper end portion of a grout-unfilled cavity 12 to see whether or not air permeability is present therein prior to grout re-injection work when re-injecting the grout for re-injection into the grout-unfilled cavity 12 positioned at an inclined portion or a vertical portion of a PC tendon insertion sheath 10 in an existing PC structure 1; and injecting the grout for re-injection from a lower end side of the grout-unfilled cavity 12 in a one-way manner when the air permeability is recognized as a result of the inspection.;COPYRIGHT: (C)2014,JPO&INPIT