| 摘要 |
PURPOSE: A method for repairing an expansion joint of a concrete structure using a drainpipe is provided to prevent safety accidents by preventing falling stones caused by deterioration. CONSTITUTION: A method for repairing an expansion joint of a concrete structure using a drainpipe is as follows. One surface or both surfaces of the joint of two concrete blocks are cut and grinded(S11). A perforated tube is fixed to the joint of the concrete blocks(S13). The spaces of the joint located at the top and bottom of the perforated tube are filled with water stopping mortar(S14). A hydrophilic sealing material is spread on the top of the water stopping mortar filled on the top of the perforated tube(S16). A high elastic wet caulking material is spread on the top of the hydrophilic sealing material, and the surface of the spread high elastic wet caulking material is parallel to the concrete blocks(S17). Glass fibers are embedded in the top of the concrete blocks and the high elastic wet caulking material using underwater hardening type epoxy resins(S19). A butyl elastic rubber is spread on the top of the underwater hardening type epoxy resins(S20). [Reference numerals] (AA) Start; (BB) Finish; (S11) Cutting and grinding; (S12) Installing a backup material; (S13) Installing a perforated tube; (S14) Filling water-stopping mortar; (S15) Spreading an underwater hardening type epoxy resin; (S16) Spreading a hydrophilic sealing material; (S17) Spreading a high-elastic wet epoxy caulking material; (S18) Spreading wet epoxy primer; (S19) Embedding glass fibers using underwater hardening type epoxy resins; (S20) Spreading a butyl elastic rubber sheet; (S21) Installing a stainless steel sheet
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