| 摘要 |
PROBLEM TO BE SOLVED: To provide a concrete structure jointing material improved in a tensile force, suitably used for fixing reinforcing bars in the expansion or anti-seismic reinforcement work of beams and the like to an existing concrete building frame. SOLUTION: An anchor 100 is composed of a deformed bar 101 and an expansion member 102. The expansion member 102 has a cone-shape gradually enlarged toward its tip. A depth part of a prepared hole 2 formed in the concrete building frame 1 is shaped into an undercut type expanded hole 3, and a packing material 4 such as an adhesive or non-contracting mortar are charged into the prepared hole 2. The anchor 100 is inserted into the prepared hole 2 in which the packing material 4 is charged until the expansion member 102 is brought into contact with the bottom of the expanded hole 3. The anchor is fixed by packing the packing material 4 in clearances a, b between the prepared hole 2 and an outer side of the anchor 100. COPYRIGHT: (C)2004,JPO
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