MENDING METHOD OF CONCRETE STRUCTURE USING SEPIOLITE REINFORCEMENT MATERIAL WHICH IS OBTAINED BY MIXING CERAMIC RESIN AND WET MIXTURE OF POLYMER MOLTAL USING SEPIOLITE AT OUTLET OF MORTAR DISCHARGING APPARATUS

摘要

The present invention relates to a method for repairing a concrete structure using a sepiolite-based repair material obtained by quantitatively mixing a wet mixture of polymer mortar using sepiolite and a ceramic quick-setting resin at a discharge part of a mortar spraying device. The present invention is a first step of chipping the concrete deterioration part; a second step of removing corrosion of reinforcing bars; A third step of applying a rust inhibitor to the reinforcing bar; a fourth step of washing the concrete repair surface with high-pressure water; A fifth step of applying a ceramic resin primer to the repair surface of the concrete; A sixth step of spraying a sepiolite-based cross-section repair material obtained by mixing a wet mixture of a polymer mortar and water using sepiolite and a ceramic quick-setting resin on the repair surface of the concrete; and a seventh step of performing cross-section repair construction on a concrete structure by using a sepiolite-based repair material, and in the sixth step, the wet mixture is 35 to 55 wt% of cement, 35 to 59.6 wt% of silica sand, and 2 to 7 of alumina cement wt%, anhydrite 2-6 wt%, sepiolite 0.1-3 wt%, EVA water-dispersible powder resin 1-3 wt%, anti-foaming agent 0.1-2 wt%, polypropylene fiber 0.1-2 wt% and naphthalene-based fluidizing agent 0.1 Produced by uniformly mixing ~3% by weight or 32~55% by weight of cement, 45~59.6% by weight of silica sand, 2~7% by weight of alumina cement, 2~6% by weight of anhydrite, 0.1~3% by weight of sepiolite, 0.1 antifoaming agent ~2 wt%, polypropylene fiber 0.1~2 wt%, and naphthalene-based fluidizing agent 0.1~3 wt% are uniformly mixed, and 4~10 wt% of an acrylic polymer resin is added to this mixture, and the resulting polymer mortar and mixing weight ratio 16 It is obtained by mixing wt% of water, and the ceramic quick-setting resin is purified water 48-65 wt%, aluminate-based liquid quick-setting material 20-30 wt%, silicate ceramic-based resin 14-20 wt%, polycarboxylic acid fluidization It is composed of 0.1 to 3% by weight, and the sepiolite-based end face repair material is mixed with 78 to 81% by weight of sepiolite polymer mortar, 15 to 18% by weight of water, and 1 to 7% by weight of a ceramic quick-setting resin with respect to 100% by weight of the total. is obtained