KR20230071663A - Surface repair method using a restoration mortar and polyurea - Google Patents
Surface repair method using a restoration mortar and polyurea Download PDFInfo
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- KR20230071663A KR20230071663A KR1020210158097A KR20210158097A KR20230071663A KR 20230071663 A KR20230071663 A KR 20230071663A KR 1020210158097 A KR1020210158097 A KR 1020210158097A KR 20210158097 A KR20210158097 A KR 20210158097A KR 20230071663 A KR20230071663 A KR 20230071663A
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- cross
- polyurea
- mortar
- composition
- eco
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 230000008439 repair process Effects 0.000 title claims abstract description 27
- 239000004570 mortar (masonry) Substances 0.000 title claims abstract description 25
- 229920002396 Polyurea Polymers 0.000 title claims abstract description 23
- 239000000203 mixture Substances 0.000 claims description 38
- 239000003973 paint Substances 0.000 claims description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 28
- 230000006866 deterioration Effects 0.000 claims description 26
- 238000010276 construction Methods 0.000 claims description 19
- 238000001035 drying Methods 0.000 claims description 9
- 238000005406 washing Methods 0.000 claims description 7
- 239000000843 powder Substances 0.000 claims description 5
- 238000011084 recovery Methods 0.000 claims description 5
- 239000011342 resin composition Substances 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 4
- 230000002787 reinforcement Effects 0.000 abstract description 5
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 abstract description 4
- 230000002265 prevention Effects 0.000 abstract description 2
- 238000004901 spalling Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 12
- 238000005260 corrosion Methods 0.000 description 11
- 230000007613 environmental effect Effects 0.000 description 11
- 239000004925 Acrylic resin Substances 0.000 description 9
- 229920000178 Acrylic resin Polymers 0.000 description 8
- 239000010865 sewage Substances 0.000 description 8
- 238000000576 coating method Methods 0.000 description 7
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 6
- 238000004299 exfoliation Methods 0.000 description 6
- 230000001681 protective effect Effects 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000009467 reduction Effects 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 239000003570 air Substances 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 4
- -1 chlorine ions Chemical class 0.000 description 4
- 229910001385 heavy metal Inorganic materials 0.000 description 4
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 230000035515 penetration Effects 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 206010003497 Asphyxia Diseases 0.000 description 3
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000003915 air pollution Methods 0.000 description 3
- 239000004568 cement Substances 0.000 description 3
- 239000003610 charcoal Substances 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 230000001066 destructive effect Effects 0.000 description 3
- 239000003822 epoxy resin Substances 0.000 description 3
- 230000003628 erosive effect Effects 0.000 description 3
- 238000004880 explosion Methods 0.000 description 3
- 239000003960 organic solvent Substances 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 3
- 229920000647 polyepoxide Polymers 0.000 description 3
- 238000004904 shortening Methods 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 238000003900 soil pollution Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- 238000003911 water pollution Methods 0.000 description 3
- 230000003313 weakening effect Effects 0.000 description 3
- 239000011787 zinc oxide Substances 0.000 description 3
- 229910001928 zirconium oxide Inorganic materials 0.000 description 3
- GUUULVAMQJLDSY-UHFFFAOYSA-N 4,5-dihydro-1,2-thiazole Chemical class C1CC=NS1 GUUULVAMQJLDSY-UHFFFAOYSA-N 0.000 description 2
- SOGAXMICEFXMKE-UHFFFAOYSA-N Butylmethacrylate Chemical compound CCCCOC(=O)C(C)=C SOGAXMICEFXMKE-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 239000001856 Ethyl cellulose Substances 0.000 description 2
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000003373 anti-fouling effect Effects 0.000 description 2
- 239000002518 antifoaming agent Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910021393 carbon nanotube Inorganic materials 0.000 description 2
- 239000002041 carbon nanotube Substances 0.000 description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 239000011231 conductive filler Substances 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 229920001249 ethyl cellulose Polymers 0.000 description 2
- 235000019325 ethyl cellulose Nutrition 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001023 inorganic pigment Substances 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 229920000609 methyl cellulose Polymers 0.000 description 2
- 239000001923 methylcellulose Substances 0.000 description 2
- 235000010981 methylcellulose Nutrition 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 239000012860 organic pigment Substances 0.000 description 2
- 229920000058 polyacrylate Polymers 0.000 description 2
- 239000011433 polymer cement mortar Substances 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 2
- 230000000475 sunscreen effect Effects 0.000 description 2
- 239000000516 sunscreening agent Substances 0.000 description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 2
- 229920002818 (Hydroxyethyl)methacrylate Polymers 0.000 description 1
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- OMIGHNLMNHATMP-UHFFFAOYSA-N 2-hydroxyethyl prop-2-enoate Chemical compound OCCOC(=O)C=C OMIGHNLMNHATMP-UHFFFAOYSA-N 0.000 description 1
- GNSFRPWPOGYVLO-UHFFFAOYSA-N 3-hydroxypropyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCCCO GNSFRPWPOGYVLO-UHFFFAOYSA-N 0.000 description 1
- QZPSOSOOLFHYRR-UHFFFAOYSA-N 3-hydroxypropyl prop-2-enoate Chemical compound OCCCOC(=O)C=C QZPSOSOOLFHYRR-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- WOBHKFSMXKNTIM-UHFFFAOYSA-N Hydroxyethyl methacrylate Chemical compound CC(=C)C(=O)OCCO WOBHKFSMXKNTIM-UHFFFAOYSA-N 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 1
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 150000005215 alkyl ethers Chemical class 0.000 description 1
- 229940045714 alkyl sulfonate alkylating agent Drugs 0.000 description 1
- 125000005227 alkyl sulfonate group Chemical group 0.000 description 1
- 150000008052 alkyl sulfonates Chemical class 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003623 enhancer Substances 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- UHESRSKEBRADOO-UHFFFAOYSA-N ethyl carbamate;prop-2-enoic acid Chemical compound OC(=O)C=C.CCOC(N)=O UHESRSKEBRADOO-UHFFFAOYSA-N 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- VOZRXNHHFUQHIL-UHFFFAOYSA-N glycidyl methacrylate Chemical compound CC(=C)C(=O)OCC1CO1 VOZRXNHHFUQHIL-UHFFFAOYSA-N 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- LNCPIMCVTKXXOY-UHFFFAOYSA-N hexyl 2-methylprop-2-enoate Chemical compound CCCCCCOC(=O)C(C)=C LNCPIMCVTKXXOY-UHFFFAOYSA-N 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000001404 mediated effect Effects 0.000 description 1
- 229940063557 methacrylate Drugs 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- NZIDBRBFGPQCRY-UHFFFAOYSA-N octyl 2-methylprop-2-enoate Chemical compound CCCCCCCCOC(=O)C(C)=C NZIDBRBFGPQCRY-UHFFFAOYSA-N 0.000 description 1
- RPQRDASANLAFCM-UHFFFAOYSA-N oxiran-2-ylmethyl prop-2-enoate Chemical compound C=CC(=O)OCC1CO1 RPQRDASANLAFCM-UHFFFAOYSA-N 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 239000004848 polyfunctional curative Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- BNMCQIRVFUGISV-UHFFFAOYSA-N propan-2-one;prop-2-enamide Chemical compound CC(C)=O.NC(=O)C=C BNMCQIRVFUGISV-UHFFFAOYSA-N 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
- 239000012855 volatile organic compound Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/46—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with organic materials
- C04B41/48—Macromolecular compounds
- C04B41/483—Polyacrylates
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/46—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with organic materials
- C04B41/48—Macromolecular compounds
- C04B41/488—Other macromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds
- C04B41/4884—Polyurethanes; Polyisocyanates
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Paints Or Removers (AREA)
Abstract
Description
본 발명은, 콘크리트로 된 구조물의 박리, 박락으로 콘크리트 철근이 노출되어 구조물의 표면에 보수가 필요한 경우, 방청/방식의 기능을 가지도록 폴리우레아를 이용하여 표면보수공법을 수행하는, 단면복구몰탈과 폴리우레아을 이용한 표면보수공법에 관한 것이다.The present invention is a cross-section restoration mortar that performs a surface repair method using polyurea to have a function of anti-corrosion / anti-corrosion when concrete reinforcement is exposed due to exfoliation and peeling of a concrete structure and repair is required on the surface of the structure. It relates to a surface repair method using polyurea.
부연하면, 폴리우레아를 사용함에 있어서 친환경 하이브리드 방식의 도료로 제작함으로써, 강한 부착력을 바탕으로 수분과 산소를 차단하여 매우 우수한 방식성, 내후성, 내습성을 가지는 표면보수공법으로서,In other words, it is a surface repair method that has excellent anticorrosion, weather resistance and moisture resistance by blocking moisture and oxygen based on strong adhesion by making it with an eco-friendly hybrid paint when using polyurea,
도료 내 중금속 및 유기용제와 같은 환경파괴 물질을 포함하지 않아서 대기, 토양, 수질오염 예방에 최적인 환경적 이점을 가지며,It does not contain environmentally destructive substances such as heavy metals and organic solvents in paint, so it has optimal environmental benefits in preventing air, soil and water pollution,
친환경 소재를 사용함에 따라, 질식, 화재 및 폭발 위험이 없는 안전한 도료이고, 건조가 빠르도록 공법을 개선하여, 긴급공사에 적합하고, 도로 차단시 교통민원을 감소할 수 있으며, 철재 및 콘크리트 구조물에 동시에 병용 적용이 가능한 등 시공성이 향상되고,As eco-friendly materials are used, it is a safe paint without the risk of suffocation, fire or explosion, and by improving the construction method to dry quickly, it is suitable for emergency construction, can reduce traffic complaints when roads are blocked, and is suitable for steel and concrete structures. Concurrent application is possible, and workability is improved.
또한, 친환경 하이브리드 방식의 도료를 사용함에 따라, 내구 연한이 길어 유지보수 비용을 절감할 수 있으며, 작업시 별도의 환기시설도 필요하지 않은 공정단축에 따른 비용 절감의 효과를 가질 수 있다.In addition, as the paint of the eco-friendly hybrid method is used, maintenance costs can be reduced due to the long durability, and cost reduction can be achieved by shortening the process by not requiring a separate ventilation facility during operation.
일반적으로 교량, 다중이용 시설물, 정수처리장, 암거 등의 시멘트를 이용한 콘크리트 구조물은 다양한 형태로 건설되어, 산업분야에 널리 사용되고 있으며, 내구성 및 사용성, 내구연한 확보를 위해 압축강도, 인장강도 등을 조절하여 사용하고 있고, 또한 용도에 따라 콘크리트 구조물의 표면에 별도의 표면보호 피막을 추가하여 사용하고 있으며, 신설 콘크리트 구조물은 시설물 또는 건축물을 건설하면서 표면보호 피막을 설치하는 경우이며, 보수는 경과시간에 따른 열화 부위를 제거한 후 단면보수 및 복구를 하고, 그 표면에 표면보호 피막을 설치하는 경우이다.In general, concrete structures using cement such as bridges, multi-use facilities, water treatment plants, and culverts are constructed in various forms and are widely used in the industrial field, and the compressive strength and tensile strength are adjusted to ensure durability, usability, and durability. In addition, a separate surface protective film is added to the surface of the concrete structure according to the purpose of use. New concrete structures are cases where a surface protective film is installed while constructing a facility or building, and repairs are carried out over time. It is a case of removing the deterioration area along the surface, repairing and restoring the cross section, and installing a surface protective film on the surface.
여기서, 상기한 콘크리트 구조물은 경과시간 및 환경요건에 따른 마모, 약화, 부식 등이 콘크리트 구조물의 표면에 나타나며, 이 상태에서 좀 더 시간이 지나면 콘크리트 구조물의 내부로 부식 및 열화가 급속히 진행된다.Here, in the above-mentioned concrete structure, wear, weakening, corrosion, etc. according to the elapsed time and environmental requirements appear on the surface of the concrete structure, and in this state, corrosion and deterioration rapidly progresses into the inside of the concrete structure as time passes.
이 경우의 열화인자는 자연적인 환경요인과 인위적인 환경요인으로 구분될 수 있으며, 이러한 환경요인에 노출된 콘크리트 구조물은 다양한 형태의 열화인 자의 침투로 인해 내구성, 사용성 등이 시간이 경과할수록 취약해지며 이를 방치하면 열화가 급속히 진행되는 단점이 있다.In this case, the deterioration factors can be divided into natural and artificial environmental factors, and concrete structures exposed to these environmental factors become vulnerable over time in terms of durability and usability due to the penetration of various types of deterioration factors. If this is left unattended, there is a disadvantage in that deterioration proceeds rapidly.
또한, 콘크리트 구조물 표면보호 피막은 열화인자가 바탕의 내부로 침투하는 것을 효과적으로 방지할 수 있어야 한다.In addition, the surface protective film of concrete structures must be able to effectively prevent the penetration of deterioration factors into the interior of the foundation.
종래의 콘크리트 구조물 표면보호 기술은 자외선 및 오존수에 노출된 경우에는 변색, 물성변화 차단을 위해 상도 피막에 별도의 자외선 차단 공정을 추가하였다.Conventional concrete structure surface protection technology added a separate UV blocking process to the top coat film to block discoloration and change in physical properties when exposed to ultraviolet rays and ozone water.
즉, 콘크리트 구조물의 내구연한에 따른 내구성 및 사용성 유지를 위한 환경요건에서 발생하는 열화인자로부터 적극적인 대처가 가능해야 한다.In other words, it should be possible to actively cope with deterioration factors generated from environmental requirements for maintaining durability and usability according to the durability of concrete structures.
콘크리트 구조물을 열화시키는 자연적인 환경요인에서의 열화인자는 외부의 온도변화에 따른 수축, 팽창, 습기를 매개로 하는 염소이온, 황산이온, 산성이온과 대기 중의 자외선, 오존 등이 있으며, 인위적인 환경요인에서의 열화인자는 정수처리장, 하수처리장의 고도처리에 사용하는 오존과 혼합된 오존수, 염소와 하수처리장 및 하수구조물은 미생물, 황산염이온, 황화수소, 황산 등이 있으며, 이와 같은 열화인자의 침투로 콘크리트 구조물의 열화가 일어나면 열화 부위를 제거한 후, 그 부위를 단면보수 및 복구하고, 그 표면에 표면보호 피막을 실시하여야 한다.Deterioration factors in the natural environmental factors that degrade concrete structures include contraction and expansion according to external temperature changes, chlorine ions, sulfate ions, acid ions, ultraviolet rays in the air, and ozone mediated by moisture, and artificial environmental factors Deterioration factors in water treatment plants, ozonated water mixed with ozone used for advanced treatment of sewage treatment plants, chlorine, and microorganisms, sulfate ions, hydrogen sulfide, sulfuric acid, etc. in sewage treatment plants and sewage structures, and these deterioration factors penetrate concrete If the deterioration of the structure occurs, after removing the deterioration part, cross-section repair and restoration of the part should be performed, and a surface protective film should be applied to the surface.
특히, 하수처리장 및 하수구조물의 사용용도 및 인위적인 환경요인에서의 열화인자로는 (1) 하수 중의 황산염이온의 환원, (2) 하수 중의 황화수소의 확산, (3) 황화수소의 산화 및 (4) 황산에 의한 콘크리트의 침식이 있다.In particular, deterioration factors in the use of sewage treatment plants and sewage structures and artificial environmental factors include (1) reduction of sulfate ions in sewage, (2) diffusion of hydrogen sulfide in sewage, (3) oxidation of hydrogen sulfide, and (4) sulfuric acid There is erosion of concrete by
이와 같이 하수처리장에서의 콘크리트의 침식 및 성능저하 현상은 혐기적인 조건하에서 황산염의 환원과 계속되는 호기적 조건하에 있는 습윤한 콘크리트 표면에서 황화수소의 산화가 동시에 성립하고 있는 경우에 주로 발생하며, 콘크리트의 침식은 콘크리트 내부로 침투한 유해이온과 시멘트 수화물의 화학적 반응으로 인하여 시멘트경화체가 분해되면서 조직이 다공화 되거나 팽창성 물질이 생성되어 열화, 산화, 균열 등을 발생시키는 문제점이 있다.As such, the phenomenon of erosion and performance degradation of concrete in sewage treatment plants mainly occurs when reduction of sulfate under anaerobic conditions and oxidation of hydrogen sulfide on the surface of wet concrete under continued aerobic conditions are simultaneously established, and erosion of concrete The chemical reaction of harmful ions penetrating into the concrete and cement hydrate causes decomposition of the hardened cement material, resulting in porous tissue or formation of expansive materials, resulting in deterioration, oxidation, cracking, and the like.
이에 따른 단면보수 및 표면보호 피막 재료 및 시공에 대해 유지관리 수요는 더욱 증가하고 있다.As a result, the maintenance demand for cross-section repair and surface protection film materials and construction is further increasing.
한편, 콘크리트 구조물은 재료의 배합, 시공, 구조, 하중, 환경요건 등에 의해 시공 초기에는 균열이 주로 발생하며, 경과시간에 따른 마모, 약화, 부식 등이 구조물 표면에 나타난다.On the other hand, concrete structures usually crack at the beginning of construction due to material mixing, construction, structure, load, and environmental requirements, and wear, weakening, and corrosion appear on the surface of the structure over time.
이와 같은 열화인자의 침투로 콘크리트 구조물의 성능과 수명이 내구연한에 미치지 못하게 되는 원인으로 작용한다.Penetration of such deterioration factors causes the performance and lifespan of concrete structures to fall short of the durability period.
이와 같은 콘크리트 구조물의 보수 및 보강에 널리 이용되는 종래의 기술은 에폭시수지 모르타르와 폴리머시멘트 모르타르를 들 수 있다.Conventional techniques widely used for repairing and reinforcing such concrete structures include epoxy resin mortar and polymer cement mortar.
에폭시수지 모르타르는 주재와 경화제의 배합비에 따라 작업성 및 가사시간이 달라져 성능에 큰 영향을 미치고 경화 시 온도 의존성이 높아 저온시에는 경화가 어려우며 열팽창계수가 콘크리트의 2~4배 정도 크기 때문에 고열ㆍ고온에 의한 변형량이 큰 단점이 있다.Epoxy resin mortar has a great influence on performance as its workability and pot life vary depending on the mixing ratio of the main material and hardener. It is difficult to harden at low temperatures due to its high temperature dependence during hardening. There is a disadvantage that the amount of deformation due to high temperature is large.
또한, 폴리머 시멘트 모르타르는 에폭시수지 모르타르에 비하여 구조물과의 일체화 특성은 우수하나 보수재료의 부착성 향상을 위하여 증점제를 첨가함으로써 스프레이 장비를 이용한 기계 시공시 운송호스 내부의 표면과 마찰력이 증대되어 호스가 막힘은 물론 토출량이 적어져 시공속도가 저하되고 폴리머의 종류나 첨가량에 따라 흙손 바름 작업성이 나빠지고 타설 두께가 비교적 얇아 여러 번의 반복적인 시공이 필요하여 시공성의 개선이 요구되고 있는 실정이다.In addition, polymer cement mortar has better integration characteristics with structures than epoxy resin mortar, but by adding a thickener to improve the adhesion of repair materials, friction with the surface inside the transport hose increases during mechanical construction using spray equipment, so that the hose As well as clogging, the amount of discharge is reduced, so the construction speed is lowered, and the workability of trowel application is deteriorated depending on the type or amount of polymer added, and the pouring thickness is relatively thin, requiring repeated construction several times, so improvement in workability is required.
본 발명의 목적은, 콘크리트로 된 구조물의 박리, 박락으로 콘크리트 철근이 노출되어 구조물의 표면에 보수가 필요한 경우, 방청/방식의 기능을 가지도록 폴리우레아를 이용하여 표면보수공법을 수행하는, 단면복구몰탈과 폴리우레아을 이용한 표면보수공법을 제공하는데 있다.An object of the present invention is to perform a surface repair method using polyurea to have a function of anti-corrosion / anti-corrosion when concrete reinforcement is exposed due to exfoliation and exfoliation of a structure made of concrete and repair is required on the surface of the structure, cross-section It is to provide a surface repair method using recovery mortar and polyurea.
상술된 목적을 달성하기 위하여 안출된 것으로 본 발명에 따른 단면복구몰탈과 폴리우레아을 이용한 표면보수공법은, 시공준비를 수행하는 제1 단계; 상기 제1 단계 후, 콘크리트 구조물의 열화영역을 제거하는 제2 단계; 상기 제2 단계 후, 열화가 제거된 표면을 고압 세척하는 제3 단계; 상기 제3 단계의 고압 세척 후 건조가 완료되면 단면복구용 혼합조성물을 몰탈하여 단면복구를 수행하는 제4 단계; 상기 제4 단계 후 양생이 완료되면, 친환경 수성 도료 조성물을 1차 도포하는 제5 단계; 상기 제5 단계의 경화가 완료되면 1차 도포면 위에 친환경 수성 도료 조성물을 2차 도포하는 제6 단계; 및 상기 제6 단계의 경화가 완료되면 2차 도포면 위에 친환경 수성 도료 조성물을 3차 도포하는 제7 단계;로 이루어지는 것을 특징으로 한다.The surface repair method using the cross-section restoration mortar and polyurea according to the present invention, which was devised to achieve the above object, includes the first step of preparing for construction; After the first step, a second step of removing the deterioration area of the concrete structure; After the second step, a third step of high-pressure washing the surface from which the deterioration has been removed; A fourth step of performing cross-section restoration by mortaring the mixture composition for cross-section restoration when drying is completed after the high-pressure washing in the third step; A fifth step of firstly applying an eco-friendly water-based paint composition when curing is completed after the fourth step; A sixth step of secondarily applying an eco-friendly water-based paint composition on the firstly coated surface when the curing of the fifth step is completed; and a seventh step of thirdly applying an eco-friendly water-based paint composition on the second coated surface when the curing of the sixth step is completed.
이때, 상기 단면복구용 혼합조성물은, 종래 단면복구용 몰탈과 폴리우레아 수지 조성물을 혼합하여 획득된 분말로서, 상기 단면복구용 혼합조성물 : 물이 100 : 16.5의 비율로 혼합되도록 하여 몰탈되는 것을 특징으로 한다.At this time, the mixed composition for cross-section restoration is a powder obtained by mixing a conventional mortar for cross-section restoration and a polyurea resin composition, and the mixed composition for cross-section restoration: water is mixed at a ratio of 100: 16.5. Characterized in that the mortar is mixed. to be
본 발명에 따른 단면복구몰탈과 폴리우레아을 이용한 표면보수공법에 의하면, 콘크리트로 된 구조물의 박리, 박락으로 콘크리트 철근이 노출되어 구조물의 표면에 보수가 필요한 경우, 방청/방식의 기능을 가지도록 폴리우레아를 이용하여 표면보수공법을 수행함에 따라,According to the surface repair method using cross-section restoration mortar and polyurea according to the present invention, when concrete reinforcement is exposed due to exfoliation and exfoliation of a concrete structure and repair is required on the surface of the structure, polyurea is used to have a function of anti-corrosion / anti-corrosion. As the surface repair method is performed using
폴리우레아를 사용함에 있어서 친환경 하이브리드 방식의 도료로 제작함으로써, 강한 부착력을 바탕으로 수분과 산소를 차단하여 매우 우수한 방식성, 내후성, 내습성을 가지는 표면보수공법을 제공할 수 있어서,In using polyurea, by making it an eco-friendly hybrid paint, it is possible to provide a surface repair method with excellent anti-corrosion, weather resistance and moisture resistance by blocking moisture and oxygen based on strong adhesion,
첫째, 도료 내 중금속 및 유기용제와 같은 환경파괴 물질을 포함하지 않아서 대기, 토양, 수질오염 예방에 최적인 환경적 이점을 가지며,First, it does not contain environmentally destructive substances such as heavy metals and organic solvents in paint, so it has optimal environmental benefits for preventing air, soil and water pollution,
둘째, 친환경 소재를 사용함에 따라, 질식, 화재 및 폭발 위험이 없는 안전한 도료이고, 건조가 빠르도록 공법을 개선하여, 긴급공사에 적합하고, 도로 차단시 교통민원을 감소할 수 있으며, 철재 및 콘크리트 구조물에 동시에 병용 적용이 가능한 등 시공성이 향상되고,Second, as eco-friendly materials are used, it is a safe paint without the risk of suffocation, fire or explosion, and by improving the construction method to dry quickly, it is suitable for emergency construction, can reduce traffic civil complaints when roads are blocked, and can be made of steel and concrete Constructability is improved, such as simultaneous application to structures,
셋째, 친환경 하이브리드 방식의 도료를 사용함에 따라, 내구 연한이 길어 유지보수 비용을 절감할 수 있으며, 작업시 별도의 환기시설도 필요하지 않은 공정단축에 따른 비용 절감의 효과를 가질 수 있다.Third, as the paint of the eco-friendly hybrid method is used, maintenance costs can be reduced due to the long durability, and cost reduction can be achieved by shortening the process by not requiring a separate ventilation facility during operation.
본 명세서 및 청구범위에 사용된 용어나 단어는 통상적이거나 사전적인 의미로 한정해서 해석되어서는 안되며, 발명자는 그 자신의 발명을 가장 최선의 방법으로 설명하기 위해 용어의 개념을 적절하게 정의할 수 있다는 원칙에 입각하여 본 발명의 기술적 사상에 부합하는 의미와 개념으로 해석되어야만 한다.The terms or words used in this specification and claims should not be construed as being limited to their usual or dictionary meanings, and the inventors can properly define the concept of terms in order to best explain their invention. Based on the principle, it should be interpreted as a meaning and concept consistent with the technical idea of the present invention.
따라서 본 명세서에 기재된 실시 예와 도면에 도시된 구성은 본 발명의 가장 바람직한 실시 예에 불과할 뿐이고 본 발명의 기술적 사상을 모두 대변하는 것은 아니므로, 본 출원시점에 있어서 이들을 대체할 수 있는 다양한 균등물과 변형 예들이 있을 수 있음을 이해하여야 한다.Therefore, since the embodiments described in this specification and the configurations shown in the drawings are only the most preferred embodiments of the present invention and do not represent all of the technical ideas of the present invention, various equivalents that can replace them at the time of the present application It should be understood that there may be variations and examples.
이하, 도면을 참조하여 설명하기에 앞서, 본 발명의 요지를 드러내기 위해서 필요하지 않은 사항 즉 통상의 지식을 가진 당업자가 자명하게 부가할 수 있는 공지 구성에 대해서는 도시하지 않거나, 구체적으로 기술하지 않았음을 밝혀둔다.Hereinafter, prior to description with reference to the drawings, matters that are not necessary to reveal the subject matter of the present invention, that is, known configurations that can be added obviously by those skilled in the art, are not shown or specifically described. reveal the sound
본 발명은, 콘크리트로 된 구조물의 박리, 박락으로 콘크리트 철근이 노출되어 구조물의 표면에 보수가 필요한 경우, 방청/방식의 기능을 가지도록 폴리우레아를 이용하여 표면보수공법을 수행하는, 단면복구몰탈과 폴리우레아을 이용한 표면보수공법에 관한 것이다.The present invention is a cross-section restoration mortar that performs a surface repair method using polyurea to have a function of anti-rust / anti-corrosion when concrete reinforcement is exposed due to exfoliation and peeling of a concrete structure and repair is required on the surface of the structure. It relates to a surface repair method using polyurea.
부연하면, 폴리우레아를 사용함에 있어서 친환경 하이브리드 방식의 도료로 제작함으로써, 강한 부착력을 바탕으로 수분과 산소를 차단하여 매우 우수한 방식성, 내후성, 내습성을 가지는 표면보수공법으로서,In other words, it is a surface repair method that has excellent anticorrosion, weather resistance and moisture resistance by blocking moisture and oxygen based on strong adhesion by making it with an eco-friendly hybrid paint when using polyurea,
도료 내 중금속 및 유기용제와 같은 환경파괴 물질을 포함하지 않아서 대기, 토양, 수질오염 예방에 최적인 환경적 이점을 가지며,It does not contain environmentally destructive substances such as heavy metals and organic solvents in paint, so it has optimal environmental benefits in preventing air, soil and water pollution,
친환경 소재를 사용함에 따라, 질식, 화재 및 폭발 위험이 없는 안전한 도료이고, 건조가 빠르도록 공법을 개선하여, 긴급공사에 적합하고, 도로 차단시 교통민원을 감소할 수 있으며, 철재 및 콘크리트 구조물에 동시에 병용 적용이 가능한 등 시공성이 향상되고,As eco-friendly materials are used, it is a safe paint without the risk of suffocation, fire or explosion, and by improving the construction method to dry quickly, it is suitable for emergency construction, can reduce traffic complaints when roads are blocked, and is suitable for steel and concrete structures. Concurrent application is possible, and workability is improved.
또한, 친환경 하이브리드 방식의 도료를 사용함에 따라, 내구 연한이 길어 유지보수 비용을 절감할 수 있으며, 작업시 별도의 환기시설도 필요하지 않은 공정단축에 따른 비용 절감의 효과를 가질 수 있다.In addition, as the paint of the eco-friendly hybrid method is used, maintenance costs can be reduced due to the long durability, and cost reduction can be achieved by shortening the process by not requiring a separate ventilation facility during operation.
이러한 본 발명에 따른 단면복구몰탈과 폴리우레아을 이용한 표면보수공법은, 시공준비단계; 열화제거단계; 고압세척단계; 단면복구단계; 1차 도포단계; 2차 도포단계; 및 3차 도포단계;를 포함하여 이루어진다.The surface repair method using the cross-section restoration mortar and polyurea according to the present invention includes a construction preparation step; deterioration removal step; high pressure washing step; Sectional restoration step; 1st application step; Second application step; and a third application step.
1. 시공준비단계1. Construction preparation stage
시공준비단계는, 콘크리트 구조물의 단면복구를 수행하기에 앞서 가설재 및 보호막(또는 분진막, 방진막)을 설치하는 등 시공 준비를 하는 단계이다.The construction preparation stage is a stage of preparing for construction, such as installing temporary materials and a protective film (or dust screen, dust screen) prior to carrying out cross-section restoration of the concrete structure.
2. 열화제거단계2. Deterioration Removal Step
열화제거단계는, 상기 시공준비단계가 종료되면, 치핑 또는 그라인딩 등의 공정을 통해 콘크리트 구조물의 열화영역을 제거하고, 표면을 다듬는 단계이다.The deterioration removal step is a step of removing the deterioration area of the concrete structure through a process such as chipping or grinding and trimming the surface when the construction preparation step is finished.
3. 고압세척단계3. High-pressure washing step
고압세척단계는, 상기 열화제거단계가 종료되면 고압세척기를 이용하여 열화가 제거된 표면에 이물질이 없도록 제거하는 단계이다.The high-pressure cleaning step is a step of removing foreign substances from the deteriorating surface using a high-pressure washer when the deterioration removal step is finished.
4. 단면복구단계4. Sectional recovery step
단면복구단계는, 상기 고압세척단계 후 건조가 완료되면 단면복구를 위하여 몰탈을 수행하는 단계이다.The cross-section recovery step is a step of performing mortar to restore the cross-section when drying is completed after the high-pressure washing step.
이때, 몰탈되는 단면복구용 조성물은 기존 단면복구용 몰탈에 폴리우레아 수지 조성물을 혼합할 수 있는데, 이렇게 혼합된 단면복구용 혼합조성물은 분말로서 분말 : 물이 100 : 16.5(중량비 기준)의 함량으로 혼합되도록 한다.At this time, the cross-section restoration composition to be mortared can be mixed with the existing cross-section restoration mortar with a polyurea resin composition, and the mixed composition for cross-section restoration is powdered in a powder:water ratio of 100:16.5 (based on weight ratio). let it mix
이때 폴리우레아 수지 조성물은, 우레탄 아크릴레이트 수지와 폴리메틸 메타크릴레이트 수지를 1:1 비율로 혼합한 것을 사용할 수 있으며, 상기 폴리우레아 수지 조성물은 단면복구용 몰탈을 무게비 100중량부를 기준으로 하여 50 내지 100중량부만큼 혼합될 수 있다.At this time, the polyurea resin composition may use a mixture of a urethane acrylate resin and a polymethyl methacrylate resin in a ratio of 1: 1, and the polyurea resin composition contains a mortar for cross-section restoration in a weight ratio of 50 based on 100 parts by weight. to 100 parts by weight.
5. 1차 도포단계5. 1st application step
1차 도포단계는 친환경 수성 도료 조성물을 이용하여 도포하는 단계로서, 단면복구단계에서 몰탈된 단복복구용 혼합조성물의 양생이 완료되면 수행된다.The first application step is a step of applying using an eco-friendly water-based paint composition, and is performed when the curing of the mixed composition for restoration of the mortar in the cross-section restoration step is completed.
이러한 도포 작업은, 붓, 롤러, 스프레이기 등을 이용하여 수행되며, 후술되는 2차 및 3차 도포의 경우에도 마찬가지이다.This coating operation is performed using a brush, roller, sprayer, etc., and the same applies to the case of the second and third coatings described later.
이때, 친환경 수성 도료 조성물이란, 징크옥사이드 또는 지르코늄 옥사이드가 아크릴 수지의 카르복실기와 수소결합하여 콤플렉스를 형성한 상온 가교형 수성 아크릴 수지 28 내지 89 중량%; 탄소나노튜브, 구리, 니켈, 전도성 카본 다이옥사이드 및 실버 중에서 선택된 1종의 단일물 또는 2종 이상의 혼합물인 전도성 충진제 1 내지 70 중량%; 알킬설포네이트, 설포네이트 오일, 알켈에테르 및 폴리옥시에틸렌계에서 1종 이상 선택된 분산제 1 내지 5중량%; 메틸 셀루로스, 에틸 셀루로스, 폴리아크릴레이트, 실리콘계 소포제, 이소티아졸린 유도체 및 부틸린옥사이드 중에서 2종 이상 선택된 기타 첨가제 1 내지 5 중량%; 로 이루어진다.At this time, the eco-friendly water-based paint composition includes 28 to 89% by weight of a normal temperature crosslinking type water-based acrylic resin in which zinc oxide or zirconium oxide hydrogen bonds with a carboxyl group of an acrylic resin to form a complex; 1 to 70% by weight of a conductive filler selected from carbon nanotubes, copper, nickel, conductive carbon dioxide, and silver, which is a single material or a mixture of two or more; 1 to 5% by weight of a dispersant selected from among alkyl sulfonates, sulfonate oils, alkel ethers, and polyoxyethylene; 1 to 5% by weight of other additives selected from two or more selected from among methyl cellulose, ethyl cellulose, polyacrylates, silicone-based antifoaming agents, isothiazoline derivatives, and butylin oxide; made up of
상기 메탈 콤플렉스된 아크릴 수지는 징크옥사이드 또는 지르코늄 옥사이드와 같은 금속 옥사이드가 아크릴 수지의 카르복실기와 수소결합을 형성한 것으로, 상기 금속 옥사이드는 합성수지에 방청성을 부여하는 역할을 한다.The metal-complexed acrylic resin is obtained by forming a hydrogen bond between a metal oxide such as zinc oxide or zirconium oxide and a carboxyl group of the acrylic resin, and the metal oxide serves to impart anti-rust properties to the synthetic resin.
상기 메탈 콤플렉스된 아크릴 수지는 본 발명의 친환경 수성 도료 조성물의 바인더로 사용되는 것으로 수분의 이동 및 침입을 차단하고 상기 도료 조성물과 구조물의 부착력을 증대시키기 위한 것이다.The metal-complexed acrylic resin is used as a binder of the eco-friendly water-based paint composition of the present invention to block the movement and penetration of moisture and to increase the adhesion between the paint composition and the structure.
상기 아크릴 수지는 메타 아크릴레이트, 부틸메타아크릴레이트, 헥실메타아크릴레이트, 옥틸메타아크릴레이트, 스티렌, 아크릴산, 메타아크릴산, 글리시딜아크릴레이트, 글리시딜메타아크릴레이트, 하이드록시에틸아크릴레이트,하이드록시에틸메타아크릴레이트, 하이드록시프로필아크릴레이트 하이드록시프로필메타아크릴레이트, 아세톤 아크릴아미드를 공중합하여 사용하는 것이 바람직하다. 상기 단량체의 유리전이 온도는 0 내지 50℃, 바람직하게는 10 내지 30℃이다.The acrylic resin is meth acrylate, butyl methacrylate, hexyl methacrylate, octyl methacrylate, styrene, acrylic acid, methacrylic acid, glycidyl acrylate, glycidyl methacrylate, hydroxyethyl acrylate, hydroxy It is preferable to copolymerize and use hydroxyethyl methacrylate, hydroxypropyl acrylate, hydroxypropyl methacrylate, and acetone acrylamide. The glass transition temperature of the monomer is 0 to 50 ℃, preferably 10 to 30 ℃.
이때, 상기 상온 가교형 수성 아크릴 수지와 콤플렉스되는 징크옥사이드 또는 지르코늄 옥사이드의 양은 상기 아크릴수지 100 중량% 대비 0.15 내지 3 중량%이다.At this time, the amount of zinc oxide or zirconium oxide complexed with the room temperature crosslinking type aqueous acrylic resin is 0.15 to 3% by weight based on 100% by weight of the acrylic resin.
또한, 전도성 충진제는 탄소나노튜브, 구리, 니켈, 전도성 카본 다이옥사이드 및 실버 중에서 선택된 1종의 단일물 또는 2종 이상의 혼합물이고, 상기 분산제는 알킬설포네이트, 설포네이트 오일, 알킬에테르 및 폴리옥시에틸렌계에서 선택된 1종 이상을 사용한다. 또한, 상기 기타 첨가제는 메틸 셀루로스, 에틸 셀루로스, 폴리아크릴레이트, 실리콘계 소포제, 이소티아졸린 유도체 및 부틸린옥사이드 중에서 선택된 2종 이상을 사용한다.In addition, the conductive filler is a single material or a mixture of two or more selected from carbon nanotubes, copper, nickel, conductive carbon dioxide, and silver, and the dispersant is an alkyl sulfonate, sulfonate oil, alkyl ether, and polyoxyethylene. Use at least one selected species. In addition, as the other additives, at least two selected from among methyl cellulose, ethyl cellulose, polyacrylate, silicone-based antifoaming agent, isothiazoline derivative, and butylene oxide are used.
이때, 1차 도료단계에서는 상기 친환경 수성 도료 조성물의 원액 혹은 희석액을 도포한다.At this time, in the first painting step, the undiluted or diluted solution of the eco-friendly water-based paint composition is applied.
이러한 친환경 수성 도료 조성물을 사용함에 따라, 중금속을 포함한 휘발성 유기 화합물이 함유되지 않으므로 작업자의 건강에 위해를 가하지 않으며, 작업장을 비롯한 주변환경의 오염이 발생되지 않는다. 또한 상기 수성 도료 조성물은 철 및 콘크리트 구조물에 강하게 접착하여 수분과 산소를 차단하기 때문에 방청성, 내수성, 내습성, 부착강도, 신장률 등이 우수하다.As such an eco-friendly water-based paint composition is used, since it does not contain volatile organic compounds including heavy metals, it does not harm workers' health and does not cause contamination of the surrounding environment including the workplace. In addition, since the water-based paint composition strongly adheres to iron and concrete structures to block moisture and oxygen, it has excellent rust resistance, water resistance, moisture resistance, adhesive strength, elongation, and the like.
따라서, 내후성 및 광택이 우수하여 장기간 내구성이 유지되므로 추가보수가 필요하지 않다.Therefore, since long-term durability is maintained due to excellent weatherability and gloss, additional maintenance is not required.
6. 2차 도포단계6. Second application step
2차 도포단계는, 상기 1차 도포단계에서 도포된 친환경 수성 도료 조성물의 경화가 완료되면 수행되는 단계로서, 1차 도포면 위에 상기 친환경 수성 도료 조성물을 무기계 안료, 유기계 안료 또는 자외선 차단제를 더 첨가하여 도포하도록 한다.The second coating step is performed when the curing of the eco-friendly water-based paint composition applied in the first coating step is completed, and the environmentally-friendly water-based paint composition is applied on the first coated surface by further adding inorganic pigments, organic pigments, or sunscreens. to spread
7. 3차 도포단계7. 3rd application step
3차 도포단계는, 상기 2차 도포단계에서 도포된 친환경 수성 도료 조성물의 경화가 완료되면 수행되는 단계로서, 2차 도포면 위에 상기 친환경 수성 도료 조성물을 무기계 안료, 유기계 안료 또는 자외선 차단제를 더 첨가하여 도포하도록 한다.The tertiary coating step is performed when the curing of the eco-friendly water-based paint composition applied in the second coating step is completed, and the environmentally-friendly water-based paint composition is added to the second coated surface by further adding inorganic pigments, organic pigments, or sunscreens. to spread
또한, 본 단계인 3차 도포단계에서는, 3차 도포면 위에 산화티탄 미립자 또는 산화티탄 졸, 중합성 불포화 카르복실산 실릴에스테르 성분 단위 함유 공중합체를 포함하는 방오도료 또는 실리콘 고무계 방오도료를 사용하여 오염방지용 도막을 더 형성하도록 할 수도 있다.In addition, in the third application step, which is this step, on the third application surface, an antifouling paint containing titanium oxide fine particles or a titanium oxide sol, a copolymer containing polymerizable unsaturated carboxylic acid silyl ester component units, or a silicone rubber-based antifouling paint is used for contamination. It is also possible to further form a coating film for prevention.
한편, 설계 조건에 따라서는, 상술된 단면복구단계가 수행될 때, 몰탈 전 치팅되어 열화가 제거된 영역의 벽면에 적어도 2개의 핀이 소정의 간격 이격되면서 마주되도록 결합시킨다.Meanwhile, depending on design conditions, when the above-described cross-section restoration step is performed, at least two pins are coupled to the wall surface of the area where the deterioration is removed by being cheated before the mortar so as to face each other while being spaced apart from each other by a predetermined distance.
이러한 핀의 단부는 고리 형상을 가지며, 이러한 고리를 이용하여 철근 혹은 철사 등이 연결체가 연결되도록 하는데, 이는 열화 제거가 이루어짐에 따른 순간적인 강도 약화를 방지하기 위함이다.The ends of these pins have a ring shape, and the reinforcing bars or wires are connected by using these rings, which is to prevent instantaneous strength weakening as deterioration is removed.
아울러, 고리에 연결된 연결체의 표면에 속건조층이 형성되도록 속건조 조성물을 도포하도록 한다.In addition, the quick-drying composition is applied so that a quick-drying layer is formed on the surface of the connecting body connected to the ring.
이때 속건조 조성물은 숯분말과 물을 혼합한 것으로 바람직하게는 3:1의 비율로 혼합되도록 한다. 여기서 경화촉진제 및 점도증진제를 물을 무게비 100중량부로 기준하여 각각 10중량부씩 더 혼합하도록 한다. 여기서 숯분말이 물에 비하여 3배 미만으로 혼합되는 경우, 숯 고유의 기능이 상실된다.In this case, the quick-drying composition is a mixture of charcoal powder and water, preferably in a ratio of 3:1. Here, the hardening accelerator and the viscosity enhancer are further mixed by 10 parts by weight based on 100 parts by weight of water. Here, when charcoal powder is mixed less than three times as much as water, the unique function of charcoal is lost.
이러한 속건조 조성물은, 연결체에 도포된 상태로 몰탈이 이루어지면, 몰탈의 양생 중 속건조를 도와 더욱 견고한 복구층이 형성되도록 한다. 다만 이러한 속건조 조성물은 열화 제거된 영역의 표면에 닿지 않도록 한다. 이는 열화 제거된 영역의 표면은 몰탈과 충분한 접착이 이루어져야 하기 때문이다.When the mortar is applied in a state in which the quick-drying composition is applied to the connector, the quick-drying composition helps to form a more durable recovery layer during curing of the mortar. However, the quick-drying composition should not come into contact with the surface of the deterioration-removed area. This is because the surface of the deterioration-removed area must be sufficiently bonded to the mortar.
상기에서 도면을 이용하여 서술한 것은, 본 발명의 주요 사항만을 서술한 것으로, 그 기술적 범위 내에서 다양한 설계가 가능한 만큼, 본 발명이 도면의 구성에 한정되는 것이 아님은 자명하다.What has been described using the drawings above is only the main points of the present invention, and it is obvious that the present invention is not limited to the configuration of the drawings as various designs are possible within the technical scope.
Claims (2)
상기 제1 단계 후, 콘크리트 구조물의 열화영역을 제거하는 제2 단계;
상기 제2 단계 후, 열화가 제거된 표면을 고압 세척하는 제3 단계;
상기 제3 단계의 고압 세척 후 건조가 완료되면 단면복구용 혼합조성물을 몰탈하여 단면복구를 수행하는 제4 단계;
상기 제4 단계 후 양생이 완료되면, 친환경 수성 도료 조성물을 1차 도포하는 제5 단계;
상기 제5 단계의 경화가 완료되면 1차 도포면 위에 친환경 수성 도료 조성물을 2차 도포하는 제6 단계; 및
상기 제6 단계의 경화가 완료되면 2차 도포면 위에 친환경 수성 도료 조성물을 3차 도포하는 제7 단계;로 이루어지는 것을 특징으로 하는, 단면복구몰탈과 폴리우레아을 이용한 표면보수공법.
The first step of preparing for construction;
After the first step, a second step of removing the deterioration area of the concrete structure;
After the second step, a third step of high-pressure washing the surface from which the deterioration has been removed;
A fourth step of performing cross-section restoration by mortaring the mixture composition for cross-section restoration when drying is completed after the high-pressure washing in the third step;
A fifth step of firstly applying an eco-friendly water-based paint composition when curing is completed after the fourth step;
A sixth step of secondarily applying an eco-friendly water-based paint composition on the firstly coated surface when the curing of the fifth step is completed; and
When the curing of the sixth step is completed, a seventh step of thirdly applying an eco-friendly water-based paint composition on the second coated surface; surface repair method using cross-section recovery mortar and polyurea.
상기 단면복구용 혼합조성물은,
종래 단면복구용 몰탈과 폴리우레아 수지 조성물을 혼합하여 획득된 분말로서,
상기 단면복구용 혼합조성물 : 물이 100 : 16.5의 비율로 혼합되도록 하여 몰탈되는 것을 특징으로 하는, 단면복구몰탈과 폴리우레아을 이용한 표면보수공법.The method of claim 1,
The mixed composition for cross-section restoration,
As a powder obtained by mixing a conventional cross-section restoration mortar and a polyurea resin composition,
The mixed composition for cross-section restoration: surface repair method using cross-section restoration mortar and polyurea, characterized in that the mortar is mixed so that water is mixed in a ratio of 100: 16.5.
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