| 摘要 |
PURPOSE:To easily pull out a tension steel member from cement mortar by a method in which a core material is pulled out of sleeves, an electric wire is inserted and heated in the sleeves, and a heat-meltable resin coated on the tension steel member arranged on the periphery of the sleeves is melted. CONSTITUTION:After the duty of an anchor is ended, a core material 11 is drawn out of a sleeve 12 by a jack to remove a steel member 13, and then an electric wire 17 is inserted into the sleeve 12. When heating the wire 17 by a power source for construction work, a heat-meltable resin 14 coated on the periphery of the tension steel member 13 is melted to separate the tension steel member 13 from its surrounding cement mortar 4. The tension steel member 13 so separated is pulled out by a jack and the wire 17 is recovered. Since the wire 17 is inserted into a sheath, the wire 17 can be reused and the tension steel member 13 can also be pulled out without the use of strong jack. |
