| 摘要 |
PURPOSE:To facilitate works to firmly anchor and remove a sheathing anchor, by a method wherein epoxy resin, which is mixed with a decomposable filler, is applied to an outer peripheral surface of a steel cable. CONSTITUTION:An epoxy resin mixture, such as ''Epikote 828'' (bisphenol A type epoxy resin), dibutyl phthalate (non-reactive diluent), heavy sodium carbonate (inorganic foaming agent(, ''Epomate B-002'' (amin hardener), ''Aerozil'' (thixotropic agent), wherein a diluent, a hardener, and a decomposable filler are mixed in epoxy resin, is sprayed to an outer peripheral surface of steel cables 1 and 2 for sheathing anchor to be cured to form a film layer 3. The steel cables 1 and 2 are inserted into a driving hole 5 formed in a ground 4, and a binder 7, such as mortar, is placed for anchoring. At a time when an anchor is removed, a power source part 10 creates thermal deterioration at the film layer 3 to reduce an adhesive force of the steel cables 1, 2 with the binder. |
