KR20220141354A - Eco-friendly polymer mortar composition with high corrosion resistance, excellent workability and prevention of neutralization, and repair method of concrete section using the same - Google Patents
Eco-friendly polymer mortar composition with high corrosion resistance, excellent workability and prevention of neutralization, and repair method of concrete section using the same Download PDFInfo
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- KR20220141354A KR20220141354A KR1020210046863A KR20210046863A KR20220141354A KR 20220141354 A KR20220141354 A KR 20220141354A KR 1020210046863 A KR1020210046863 A KR 1020210046863A KR 20210046863 A KR20210046863 A KR 20210046863A KR 20220141354 A KR20220141354 A KR 20220141354A
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- resin
- eco
- corrosion resistance
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- 239000004567 concrete Substances 0.000 title claims abstract description 70
- 239000004570 mortar (masonry) Substances 0.000 title claims abstract description 63
- 239000000203 mixture Substances 0.000 title claims abstract description 58
- 229920000642 polymer Polymers 0.000 title claims abstract description 32
- 230000007797 corrosion Effects 0.000 title claims abstract description 28
- 238000005260 corrosion Methods 0.000 title claims abstract description 28
- 238000006386 neutralization reaction Methods 0.000 title claims abstract description 16
- 230000002265 prevention Effects 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims abstract description 14
- 230000008439 repair process Effects 0.000 title claims description 18
- 229920005989 resin Polymers 0.000 claims abstract description 25
- 239000011347 resin Substances 0.000 claims abstract description 25
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 24
- 239000004848 polyfunctional curative Substances 0.000 claims abstract description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 58
- 239000000377 silicon dioxide Substances 0.000 claims description 24
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 22
- 239000002893 slag Substances 0.000 claims description 18
- 239000011398 Portland cement Substances 0.000 claims description 17
- 239000011083 cement mortar Substances 0.000 claims description 14
- 150000001412 amines Chemical class 0.000 claims description 11
- 239000004576 sand Substances 0.000 claims description 10
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 9
- 239000004843 novolac epoxy resin Substances 0.000 claims description 9
- 230000003014 reinforcing effect Effects 0.000 claims description 9
- QMOCHTLIIWRLQV-UHFFFAOYSA-N 2-[methyl(3-trimethoxysilylpropyl)amino]ethanol Chemical compound CO[Si](OC)(OC)CCCN(C)CCO QMOCHTLIIWRLQV-UHFFFAOYSA-N 0.000 claims description 7
- 239000004952 Polyamide Substances 0.000 claims description 7
- 229920002647 polyamide Polymers 0.000 claims description 7
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 claims description 6
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 claims description 6
- 239000012209 synthetic fiber Substances 0.000 claims description 6
- 229920002994 synthetic fiber Polymers 0.000 claims description 6
- 239000000080 wetting agent Substances 0.000 claims description 5
- 239000002518 antifoaming agent Substances 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 4
- 239000002270 dispersing agent Substances 0.000 claims description 4
- 239000000126 substance Substances 0.000 abstract description 14
- 239000000654 additive Substances 0.000 abstract description 3
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- 230000000996 additive effect Effects 0.000 abstract description 2
- 239000004846 water-soluble epoxy resin Substances 0.000 abstract description 2
- 239000000835 fiber Substances 0.000 description 17
- 230000000052 comparative effect Effects 0.000 description 14
- 239000004568 cement Substances 0.000 description 12
- 230000006866 deterioration Effects 0.000 description 12
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 8
- 239000002245 particle Substances 0.000 description 8
- 239000004593 Epoxy Substances 0.000 description 7
- 239000003112 inhibitor Substances 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- -1 winter Chemical compound 0.000 description 6
- 239000003822 epoxy resin Substances 0.000 description 5
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000003973 paint Substances 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 229910000077 silane Inorganic materials 0.000 description 4
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 125000000524 functional group Chemical group 0.000 description 3
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- 239000010865 sewage Substances 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 239000001110 calcium chloride Substances 0.000 description 2
- 229910001628 calcium chloride Inorganic materials 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical class OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
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- 150000002894 organic compounds Chemical class 0.000 description 2
- 239000011368 organic material Substances 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000002940 repellent Effects 0.000 description 2
- 239000005871 repellent Substances 0.000 description 2
- SCPYDCQAZCOKTP-UHFFFAOYSA-N silanol Chemical compound [SiH3]O SCPYDCQAZCOKTP-UHFFFAOYSA-N 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 230000008719 thickening Effects 0.000 description 2
- RNLHGQLZWXBQNY-UHFFFAOYSA-N 3-(aminomethyl)-3,5,5-trimethylcyclohexan-1-amine Chemical compound CC1(C)CC(N)CC(C)(CN)C1 RNLHGQLZWXBQNY-UHFFFAOYSA-N 0.000 description 1
- CBEVWPCAHIAUOD-UHFFFAOYSA-N 4-[(4-amino-3-ethylphenyl)methyl]-2-ethylaniline Chemical compound C1=C(N)C(CC)=CC(CC=2C=C(CC)C(N)=CC=2)=C1 CBEVWPCAHIAUOD-UHFFFAOYSA-N 0.000 description 1
- DZIHTWJGPDVSGE-UHFFFAOYSA-N 4-[(4-aminocyclohexyl)methyl]cyclohexan-1-amine Chemical compound C1CC(N)CCC1CC1CCC(N)CC1 DZIHTWJGPDVSGE-UHFFFAOYSA-N 0.000 description 1
- SWVKFORRAJEMKK-UHFFFAOYSA-N 4-methylcyclohexane-1,1-diamine Chemical compound CC1CCC(N)(N)CC1 SWVKFORRAJEMKK-UHFFFAOYSA-N 0.000 description 1
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Natural products CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 1
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- TVCQRYPFBRXZQP-UHFFFAOYSA-N [3-(aminomethyl)cyclohexyl]methanamine Chemical compound NCC1CC(CCC1)CN.C1(CC(CCC1)CN)CN TVCQRYPFBRXZQP-UHFFFAOYSA-N 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000013530 defoamer Substances 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 125000002573 ethenylidene group Chemical group [*]=C=C([H])[H] 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 239000004574 high-performance concrete Substances 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000012784 inorganic fiber Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 229910003002 lithium salt Inorganic materials 0.000 description 1
- 159000000002 lithium salts Chemical class 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 150000002736 metal compounds Chemical class 0.000 description 1
- 238000003823 mortar mixing Methods 0.000 description 1
- 150000001282 organosilanes Chemical class 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
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- 239000011433 polymer cement mortar Substances 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
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- 238000007665 sagging Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 239000013008 thixotropic agent Substances 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
Classifications
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- 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- 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
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/04—Silica-rich materials; Silicates
- C04B14/06—Quartz; Sand
-
- 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
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/30—Oxides other than silica
- C04B14/306—Zirconium oxide
-
- 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
- C04B16/00—Use of organic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of organic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B16/04—Macromolecular compounds
- C04B16/06—Macromolecular compounds fibrous
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- C—CHEMISTRY; METALLURGY
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- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/14—Waste materials; Refuse from metallurgical processes
- C04B18/141—Slags
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- 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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/04—Carboxylic acids; Salts, anhydrides or esters thereof
-
- 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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/24—Macromolecular compounds
- C04B24/28—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C04B24/281—Polyepoxides
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- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/24—Macromolecular compounds
- C04B24/28—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C04B24/287—Polyamides
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/40—Compounds containing silicon, titanium or zirconium or other organo-metallic compounds; Organo-clays; Organo-inorganic complexes
- C04B24/405—Organo-inorganic complexes
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- 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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/20—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the epoxy compounds used
- C08G59/22—Di-epoxy compounds
- C08G59/24—Di-epoxy compounds carbocyclic
- C08G59/245—Di-epoxy compounds carbocyclic aromatic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
- C08G59/50—Amines
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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
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- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/40—Surface-active agents, dispersants
- C04B2103/408—Dispersants
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- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/44—Thickening, gelling or viscosity increasing agents
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- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/50—Defoamers, air detrainers
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- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/34—Non-shrinking or non-cracking materials
- C04B2111/343—Crack resistant materials
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- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/72—Repairing or restoring existing buildings or building materials
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
Description
본 발명은 작업성이 우수한 고내식성 친환경 폴리머 몰탈조성물 및 이를 이용한 콘크리트 단면의 보수방법에 대한 것으로서, 더욱 상세하게는 우수한 작업성, 내식성, 내염해성, 내구성, 강도 등이 우수하여 콘크리트 구조물의 수명 증가 및 보수비용 절감 향상을 구현할 수 있는 고내식성 중성화 방지 친환경 폴리머 몰탈조성물 및 이를 이용한 콘크리트 단면의 보수방법에 대한 것이다. The present invention relates to a highly corrosion-resistant eco-friendly polymer mortar composition with excellent workability and a method for repairing a concrete section using the same, and more particularly, to increase the lifespan of a concrete structure by excellent workability, corrosion resistance, salt decomposition resistance, durability, strength, etc. And it relates to a high corrosion-resistance neutralization prevention eco-friendly polymer mortar composition that can realize improvement in repair cost reduction and a repair method of a concrete cross section using the same.
구조물은 가설되는 순간부터 외적, 내적 환경에 의해 지속적인 성능저하과정을 겪게 되는데, 콘크리트 구조물 또한 내부 및 외부 열화인자인 이산화탄소, 겨울철, 동결방지를 위해 뿌리는 염화칼슘 등의 염화물 이온 등에 노출되어 내구성이 저하하는 현상이 있다. From the moment of construction, the structure undergoes continuous performance degradation due to external and internal environments. Concrete structures are also exposed to internal and external degradation factors such as carbon dioxide, winter, and chloride ions such as calcium chloride sprayed to prevent freezing, resulting in reduced durability. There is a phenomenon that
열화 등에 의해 콘크리트에 균열이 발생하게 되면, 시간의 경과에 따라 콘크리트의 압축강도와 철근의 인장강도가 점차 떨어지게 되고, 균열 부위를 통해 노출된 콘크리트는 중성화 현상이 진행되어 철근의 부식이 일어난다. 이러한 철근의 부식 현상이 심해지면 콘크리트 구조물이 결국 붕괴될 수도 있다. 따라서, 콘크리트 구조물이 열화되어 균열이 발생하면 조속하게 열화된 부위를 보수할 필요가 있다. When cracks occur in concrete due to deterioration, etc., the compressive strength of concrete and the tensile strength of rebars gradually decrease over time, and the concrete exposed through the cracks undergoes neutralization and corrosion of reinforcing bars occurs. If the corrosion of the reinforcing bars becomes severe, the concrete structure may eventually collapse. Therefore, when cracks occur due to deterioration of the concrete structure, it is necessary to repair the deteriorated part as soon as possible.
심지어, 1974년 영국에서 가설후 12년 밖에 경과하지 않은 콘크리트 보의 직접적인 붕괴 원인이 부식에 의한 것으로 보고된 바 있다. Even in 1974, it was reported that corrosion was the cause of the direct collapse of concrete beams only 12 years after construction in England.
콘크리트의 성능저하에 결정적 영향을 미치는 것은 균열로, 균열이 발생하면 콘크리트 내부에 유해한 외기나 수분, 화학 성분이 침투하여 콘크리트의 성능저하가 더욱 촉진된다. 또한, 콘크리트 내부에 침투한 수분, 염화물 이온 등에 의해 콘크리트 구조물 내부의 철근에 부식이 발생하여 추가적인 균열이 발생하거나 콘크리트가 탈락하는 현상이 일어남과 동시에 철근 부식에 의해 철근 단면이 감소하여 성능이 저하됨으로써 구조물이 파손될 수도 있다. Cracks have a decisive influence on the deterioration of concrete performance, and when cracks occur, harmful external air, moisture, and chemical components penetrate into the concrete, further promoting the deterioration of concrete performance. In addition, corrosion occurs in the reinforcing bars inside the concrete structure due to moisture and chloride ions that have penetrated into the concrete, resulting in additional cracks or concrete dropping. The structure may be damaged.
이에 이러한 열화인자의 침투를 막고 콘크리트의 내구성을 향상시키기 위해 고성능 콘크리트, 마감재, 유지관리기술 등 다양한 분야에서 많은 연구가 이루어 지고 있다. 하지만, 아직까지 콘크리트의 내구성 저하는 해결해야 할 큰 문제로 남아있다. In order to prevent the penetration of these deterioration factors and improve the durability of concrete, many studies are being conducted in various fields such as high-performance concrete, finishing materials, and maintenance technology. However, deterioration of the durability of concrete still remains a major problem to be solved.
본 발명은 상기의 점을 감안하여 안출된 것으로서 본 발명의 목적은 기후나 환경 변화에 의한 콘크리트의 열화, 중성화 및 화학적 부식에 의한 콘크리트 구조물의 균열, 들뜸, 내구성 저하 등과 같은 콘크리트 구조물의 결함을 보수 및 보강하기 위한 폴리머 몰탈 조성물 및 이를 이용한 콘크리트 단면의 보수방법에 관한 것이다. The present invention has been devised in view of the above, and an object of the present invention is to repair defects in concrete structures such as deterioration, neutralization, and chemical corrosion of concrete due to changes in climate or environment, cracking, lifting, and deterioration of durability. And it relates to a polymer mortar composition for reinforcing and a method for repairing a concrete cross section using the same.
상기의 목적을 위해 본 발명은 2액형 수용성 에폭시 수지를 폴리머 몰탈의 바인더 수지, 즉 균열방지제로 사용하여 수지의 경화에 따른 결합력을 통해 계면에서의 물리 화학적인 안정성을 확보하여 고내식성 중성화 방지 친환경 폴리머 몰탈조성물을 발명하였다. For the above purpose, the present invention uses a two-component water-soluble epoxy resin as a polymer mortar binder resin, that is, as a crack preventing agent, and secures physicochemical stability at the interface through the bonding force according to the curing of the resin, thereby preventing high corrosion resistance neutralization eco-friendly polymer A mortar composition was invented.
본 발명의 고내식성 중성화 방지 친환경 폴리머 몰탈조성물은 수지성분과 무기물들 및 각종 첨가제성분들의 혼합물인 몰탈성분으로 구성되고, 다시 수지성분은 주수지(주제부, A)와 이를 경화시키기 위한 경화제수지(경화제부, B)로 구성된다. The high corrosion resistance and neutralization prevention eco-friendly polymer mortar composition of the present invention is composed of a mortar component that is a mixture of a resin component, inorganic substances and various additive components, and the resin component is again the main resin (subject part, A) and a curing agent resin for curing it ( It consists of a hardening|curing agent part, B).
구체적으로, 상기 수지성분인 상기 주제부(A)는 수용성 페놀 노볼락 에폭시 수지를 포함하고, 상기 주제부(A)의 수지를 경화시키는 수용성 아민 경화제를 포함하는 경화제부(B)를 포함한다. Specifically, the main part (A) as the resin component includes a water-soluble phenol novolac epoxy resin and a curing agent part (B) including a water-soluble amine curing agent for curing the resin of the main part (A).
또한, 포틀랜드시멘트 100중량부에 대해, 실리카 규사 40 ~ 45 중량부, 슬래그 10 ~ 25 중량부, 합성섬유 단섬유 0.02 ~ 0.5 중량부, 흐름조절제 3 ~ 5 중량부, 소포제 0.2 ~ 1 중량부, 습윤제 0.1 ~ 0.5 중량부, 수용성 분산제 0.1 ~ 0.5 중량부, N-(히드록시에칠)-N-메칠아미노 프로필 트리메톡시 실란 5 ~ 13 중량부, 지르코니아 1 ~ 5중량부를 포함하는 시멘트 몰탈(C)를 포함한다.In addition, with respect to 100 parts by weight of Portland cement, 40 to 45 parts by weight of silica silica sand, 10 to 25 parts by weight of slag, 0.02 to 0.5 parts by weight of a synthetic fiber short fiber, 3 to 5 parts by weight of a flow control agent, 0.2 to 1 parts by weight of an antifoaming agent, A cement mortar comprising 0.1 to 0.5 parts by weight of a wetting agent, 0.1 to 0.5 parts by weight of a water-soluble dispersant, 5 to 13 parts by weight of N-(hydroxyethyl)-N-methylaminopropyl trimethoxysilane, and 1 to 5 parts by weight of zirconia ( C).
본 발명의 폴리머 몰탈 조성물은 상기 시멘트 몰탈(C) 100중량부에 대해 주제부(A) 2 - 7 중량부와 경화제부(B) 0.5 - 2 중량부를 포함한다. The polymer mortar composition of the present invention contains 2-7 parts by weight of the main part (A) and 0.5-2 parts by weight of the hardener part (B) based on 100 parts by weight of the cement mortar (C).
본 발명자들은 콘크리트의 중성화/열화에 영향을 주는 여러 인자들(자동차에서 배출되는 이산화탄소, 아황산가스 등의 배기가스, 동절기에 살포되는 염화칼슘 등의 염화물 이온, 산성비 등)의 침투를 막고 콘크리트의 내구성을 향상시키기 위해 내구성의 노볼락 에폭시 수지를 메인 수지로 하여 무기물의 시멘트 성분들의 물리 화학적인 결합력을 향상 시켰고, 포틀랜드시멘트를 주성분으로 하고 여기에 고강도, 고내식성 부여를 위한 실리카 규사 성분을 포함시켰으며, 슬래그의 성분을 포함시켜 내구성 및 내화학성을 향상시켰으며, 미세 합성섬유 단섬유를 포함하여 무기물 및 유기물의 상호 결합력을 향상시켜, 조성물의 경화시에 전체적인 고내구성, 내후성, 내화학성의 물성을 발휘하도록 하였다. The present inventors prevent the penetration of various factors affecting the neutralization/deterioration of concrete (exhaust gas such as carbon dioxide and sulfur dioxide emitted from automobiles, chloride ions such as calcium chloride sprayed in winter, acid rain, etc.) and improve the durability of concrete To improve the physical and chemical bonding strength of inorganic cement components by using durable novolac epoxy resin as the main resin, Portland cement as the main component and silica silica component for imparting high strength and high corrosion resistance were included. By including the components of slag to improve durability and chemical resistance, and improve the mutual bonding of inorganic and organic materials, including fine synthetic short fibers, the overall high durability, weather resistance, and chemical resistance properties are exhibited during curing of the composition. made to do
또한 유기화합물과 무기화합물이 혼합된 본 발명의 조성물과 콘크리트 표면의 부착력을 강화하여 경화물의 전체적인 강도 내지는 내구성 향상을 위해 실란화합물을 조성물내에 포함시켜 본 발명이 목적하는 보수 표면의 강도 향상을 꾀하였다.In addition, in order to improve the overall strength or durability of the cured product by strengthening the adhesion between the composition of the present invention in which an organic compound and an inorganic compound are mixed and the concrete surface, a silane compound was included in the composition to improve the strength of the repair surface, which is the purpose of the present invention. .
본 발명의 고내식성 중성화 방지 친환경 폴리머 몰탈조성물 및 이를 이용한 콘크리트 단면의 보수방법은 수지와 몰탈성분의 강한 결합력, 경화물의 고내구성 및 고내식성을 통해, 콘크리트 교량, 콘크리트보, 상하수도 정수지, 옹벽, 터널, 용수암거, 배수 및 하수 암거, 도심지의 각종 건축물에 효과적으로 작용 가능하다. The high corrosion-resistance neutralization prevention eco-friendly polymer mortar composition of the present invention and the method of repairing the cross section of concrete using the same are achieved through strong bonding between resin and mortar components, high durability and high corrosion resistance of the cured product, concrete bridges, concrete beams, water and sewage purification basins, retaining walls, tunnels , water culverts, drainage and sewage culverts, and can be effectively applied to various buildings in downtown areas.
이하 본 발명을 상세히 설명한다. Hereinafter, the present invention will be described in detail.
본 발명의 고내식성 중성화 방지 친환경 폴리머 몰탈조성물은 수용성 페놀 노볼락 에폭시 수지를 포함하는 주제부(A); 상기 주제부(A)의 수지를 경화시키는 수용성 아민 경화제를 포함하는 경화제부(B); 및 포틀랜드시멘트 100중량부에 대해, 실리카 규사 40 ~ 45 중량부, 슬래그 10 ~ 25 중량부, 합성섬유 단섬유 0.02 ~ 0.5 중량부, 폴리아미드 왁스와 폴라아크릴산나트륨을 중량비로 약 1:1의 비율로 혼합한 흐름조절제 3 ~ 5 중량부, 소포제 0.2 ~ 1 중량부, 습윤제 0.1 ~ 0.5 중량부, 수용성 분산제 0.1 ~ 0.5 중량부, N-(히드록시에칠)-N-메칠아미노 프로필 트리메톡시 실란 5 ~ 13 중량부, 지르코니아 1 ~ 5중량부를 포함하는 시멘트 몰탈(C)를 포함하고, 상기 시멘트 몰탈(C) 100중량부에 대해 주제부(A) 2 - 7 중량부, 경화제부(B) 0.5 - 2 중량부를 포함하는 것을 특징으로 한다.The high corrosion resistance neutralization prevention eco-friendly polymer mortar composition of the present invention comprises a main part (A) comprising a water-soluble phenol novolac epoxy resin; a curing agent part (B) comprising a water-soluble amine curing agent for curing the resin of the main part (A); And with respect to 100 parts by weight of Portland cement, 40 to 45 parts by weight of silica silica sand, 10 to 25 parts by weight of slag, 0.02 to 0.5 parts by weight of short synthetic fibers, polyamide wax and sodium polyacrylate in a weight ratio of about 1:1. 3 to 5 parts by weight of a flow control agent mixed with Containing cement mortar (C) containing 5 to 13 parts by weight of silane and 1 to 5 parts by weight of zirconia, 2 to 7 parts by weight of the main part (A), 2 to 7 parts by weight of the hardener part (B) based on 100 parts by weight of the cement mortar (C) ) 0.5-2 parts by weight.
이하의 설명에서, 콘크리트 구조물은 단순히 콘크리트로 기재하기도 하나, 의미상 콘크리트라는 단어는 콘크리트 구조물을 가리킨다. 이러한 콘크리트 내지는 콘크리트 구조물은 일반적인 수로, 수로 터널, 하수구조물, 지하구조물, 지수구조물, 도로 및 고속도로뿐만 아니라 차량이 통행하는 시설 구조물(중앙 분리벽, 날개벽, 측구 콘크리트), 옹벽 구조물, 콘크리트 슬래브, 해양 구조물 등을 포함하는 콘크리트로 이루어진 모든 구조물의 의미로 사용한다. In the following description, a concrete structure may be simply described as concrete, but the word concrete in meaning refers to a concrete structure. These concrete or concrete structures include general waterways, waterway tunnels, sewage structures, underground structures, water-stop structures, roads and highways, as well as facility structures (central partition walls, wing walls, gutter concrete), retaining wall structures, concrete slabs, and offshore structures. It is used in the meaning of all structures made of concrete, including structures.
본 발명의 폴리머몰탈 조성물에 포함되는 주제 수지는 수용성 페놀 노볼락 에폭시 수지이다. 이는 페놀 노볼락 에폭시 수지를 에멜전화 한 것으로서, 상업적으로 구득 가능한 것으로 세진이앤씨 사의 SR-361N60, SR-365N70 등이 있다. The main resin included in the polymer mortar composition of the present invention is a water-soluble phenol novolac epoxy resin. This is an emulsion of phenol novolac epoxy resin, and it is commercially available, such as SR-361N60 and SR-365N70 of Sejin E&C.
본 발명은 유기 용매를 사용하지 않고 수용성을 수지를 사용하여, 폴리머 몰탈의 혼합시 및 보수작업 시 유기 용매의 사용에 따른 인체나 환경에 악영향을 주지 않는 친환경적인 콘크리트 보수 도료 조성물을 제공한다. The present invention provides an eco-friendly concrete repair paint composition that does not adversely affect the human body or the environment due to the use of an organic solvent when mixing polymer mortar and repair work by using a water-soluble resin without using an organic solvent.
수용성 페놀 노볼락 에폭시 수지는 상기 시멘트 몰탈(C) 100중량부에 대해, 2 - 7 중량부를 포함한다. 2중량부 미만에서는 균열방지라는 바인더로서의 기본 성능이 저하되고 7중량부 초과되는 경우에는 조성물의 내구성에 오히려 악영향이 있으며, 점성이 높아져서 작업성이 매우 저하되는 문제점이 있다. The water-soluble phenol novolac epoxy resin contains 2-7 parts by weight based on 100 parts by weight of the cement mortar (C). If it is less than 2 parts by weight, the basic performance as a binder to prevent cracking is lowered, and if it exceeds 7 parts by weight, it has a rather adverse effect on the durability of the composition, and there is a problem that the workability is greatly reduced due to the increase in viscosity.
본 발명의 폴리머몰탈 조성물은 조성물내에 포함된 주제(에폭시 수지)와 화학반응하여 경화할 수 있는 수용성 아민경화제를 상기 시멘트 몰탈(C) 100중량부에 대해, 0.5 ~ 2 중량부를 포함한다. 이 수치는 주제(에폭시기)와의 경화반응에 참여하는 관능기(아민)의 함량에 따른 배합비율이다. 구체적으로 상기 수용성 아민경화제는 에폭시(BPA계 에폭시, BPF계 에폭시, 노볼락 에폭시 등)를 사이클로 아민(예컨대, 이소프렌 디아민(Isophorone diamine), 4,4-디아미노사이클로헥실메탄(4,4-Diaminodicyclohexylmethane), 1,3-비스(아미노메틸)사이클로헥산(1,3-Bis(Aminomethyl)cyclohexane))에 반응시켜 물에 분산한 것으로서, 세진이앤씨사의 SH-831W50, 바스프사의 Laromin C260 등이 예시된다. The polymer mortar composition of the present invention contains 0.5 to 2 parts by weight of a water-soluble amine curing agent that can be cured by chemical reaction with the main agent (epoxy resin) contained in the composition, based on 100 parts by weight of the cement mortar (C). This figure is a compounding ratio according to the content of the functional group (amine) participating in the curing reaction with the main agent (epoxy group). Specifically, the water-soluble amine curing agent is an epoxy (BPA-based epoxy, BPF-based epoxy, novolak epoxy, etc.) cycloamine (eg, isoprene diamine (Isophorone diamine), 4,4-diaminocyclohexylmethane (4,4-Diaminodicyclohexylmethane) ) and 1,3-bis(aminomethyl)cyclohexane (1,3-Bis(Aminomethyl)cyclohexane)) and dispersed in water, and examples thereof include SH-831W50 of Sejin E&C and Laromin C260 of BASF.
또한 본 발명의 폴리머몰탈 조성물은 몰탈성분(C)을 포함한다. In addition, the polymer mortar composition of the present invention includes a mortar component (C).
몰탈성분(C)은 본 발명의 조성물에서 뼈대 역할을 하는 성분으로 포틀랜드시멘트를 주성분으로 하고 여기에 고강도, 고내식성 부여를 위한 실리카 규사 성분을 포함시켰으며, 슬래그의 성분을 포함시켜 내구성 및 내화학성을 향상시켰으며, 미세 단섬유를 포함하여 무기물 및 유기물의 상호 결합력을 향상시켜, 조성물의 경화시에 전체적인 고내구성, 내후성, 내화학성의 물성을 발휘하도록 하였다. The mortar component (C) is a component that serves as a skeleton in the composition of the present invention, and contains Portland cement as a main component and silica silica component for imparting high strength and high corrosion resistance. Durability and chemical resistance by including a component of slag and improved mutual bonding of inorganic and organic materials, including fine short fibers, to exhibit overall high durability, weather resistance, and chemical resistance properties during curing of the composition.
또한 유기화합물과 무기화합물이 혼합된 본 발명의 조성물과 콘크리트 표면의 부착력을 강화하여 경화물의 전체적인 강도 내지는 내구성 향상을 위해 실란화합물을 조성물내에 포함시켜 본 발명이 목적하는 보수 표면의 강도 향상을 꾀하였다. In addition, in order to improve the overall strength or durability of the cured product by strengthening the adhesion between the composition of the present invention in which an organic compound and an inorganic compound are mixed and the concrete surface, a silane compound was included in the composition to improve the strength of the repair surface, which is the purpose of the present invention. .
포틀랜드시멘트는 몰탈 조성물의 시멘트 성분의 주요성분으로서 몰탈의 기본적인 접착력 및 강도를 발현한다. 입도는 보통 30 ~ 70㎛의 입도인 것을 사용한다. 이러한 입도 범위는 보수가 필요한 콘크리트 구조물의 단면과의 물리적인 결합력을 확보하기 위함과 동시에, 수지와의 혼용성을 고려한 것이다. Portland cement, as a major component of the cement component of the mortar composition, exhibits the basic adhesive strength and strength of the mortar. A particle size of 30 ~ 70㎛ is usually used. This particle size range is intended to secure physical bonding with the cross section of the concrete structure that needs repair, and at the same time, considers compatibility with resin.
실리카 규사(SiO2)는 포틀랜드 시멘트 다음으로 몰탈성분의 주성분으로서, 입도 크기 0.01 ~ 0.09mm인 것을 포틀랜드 시멘트 100중량부에 대해 40 ~ 45중량부 사용함이 바람직한데 이는 타 성분과의 혼합성을 위한 것이고, 사용하는 장소 및 기능에 따라서 적절한 입도의 것을 사용할 수 있다. 실리카 규사(규사 실리카 또는 규사 또는 실리카)는 시중에서 쉽게 구득가능하다. Silica silica sand (SiO2) is the main component of the mortar component after Portland cement, and it is preferable to use 40 to 45 parts by weight based on 100 parts by weight of Portland cement that has a particle size of 0.01 to 0.09 mm. This is for compatibility with other components. , it is possible to use a suitable particle size according to the location and function of use. Silica Silica sand (silica silica or silica sand or silica) is readily available in the market.
본 발명의 몰탈성분에 포함되는 슬래그는 철강석으로부터 철을 분리할 때 생기는 제철 부산물로서, 본 발명에서는 폴리머 몰탈의 경화 초기의 강도를 개선시키기 위한 목적으로 사용된다. 즉, 상기 슬래그는 경화시 발생하는 수화열과 건조시에 발생하는 수축을 방지하여 경화 초기에 발생하는 균열 등의 문제를 억제한다. 본 발명에서는 제강슬래그(전기슬래그, 전로슬래그 등), 고로슬래그 어느 것이라도 사용가능하다. 슬래그의 입도는 출처에 따라 그 범위가 수십mm에서 부터 수십 마이크로까지 매우 넓은데, 본 발명에서는 입도범위가 10 ~ 90 ㎛ 의 것으로서, KS규격 KSL5210, KSL5201 등의 것을 사용함이 바람직하다. The slag included in the mortar component of the present invention is an iron-making by-product generated when iron is separated from iron and steel, and in the present invention, it is used for the purpose of improving the strength of the polymer mortar at the initial stage of hardening. That is, the slag prevents problems such as cracks occurring at the initial stage of curing by preventing heat of hydration generated during curing and shrinkage occurring during drying. In the present invention, any of steelmaking slag (electrical slag, converter slag, etc.) and blast furnace slag can be used. The particle size of the slag is very wide from several tens of mm to several tens of micro, depending on the source. In the present invention, the particle size range is 10 to 90 μm, and it is preferable to use KS standards KSL5210, KSL5201, etc.
슬래그는 포틀랜드시멘트 100 중량부에 대하여 10 ~ 25 중량부로 포함될 수 있으며, 10 중량부 미만으로 포함되는 경우에는, 앞서 설명한 경화 초기시의 강도 개선, 수화열 및 건조수축 저감 효과를 얻기 곤란하고, 25 중량부를 초과하여 포함되는 경우에는 경화 후 몰탈 조성물의 물성을 감소시킬 우려가 있다. The slag may be included in an amount of 10 to 25 parts by weight based on 100 parts by weight of Portland cement, and when it is included in an amount of less than 10 parts by weight, it is difficult to obtain the above-described strength improvement, heat of hydration and drying shrinkage reduction effect at the initial stage of curing, and 25 parts by weight. When included in excess of parts, there is a risk of reducing the physical properties of the mortar composition after curing.
몰탈성분(C)은 보강섬유로서 합성섬유 단섬유를 포함한다. 상기 보강섬유는 이성분들간의 결합력을 증가시켜서 결과적으로 폴리머 몰탈 조성물의 전체적인 인장강도, 파열강도, 내구성 등을 증가시켜 보수된 부분의 균열을 방지하고, 균열의 전파를 방지하는 역할을 한다. 또한 휨강성, 인장강도가 증가되어 내구성을 향상시키고, 시공시 몰탈이 처지는 현상을 개선하여 몰탈 조성물의 접착력 및 응집력을 향상시킨다. The mortar component (C) includes short synthetic fibers as reinforcing fibers. The reinforcing fibers increase the bonding force between the two components and consequently increase the overall tensile strength, rupture strength, durability, etc. of the polymer mortar composition to prevent cracks in the repaired part and to prevent the propagation of cracks. In addition, the flexural rigidity and tensile strength are increased to improve durability and improve the mortar sagging during construction, thereby improving the adhesion and cohesion of the mortar composition.
콘크리트는 일반적으로 인장강도가 압축강도의 약 1/10에도 못 미치는 정도로 미미 한데, 본 발명의 보강섬유 성분은 본 발명의 실시예에서 시험해 본 결과, 콘크리트 공시체의 인장강도를 일반콘크리트에 비해 1.5배 이상 증가시키는 결과를 보였다. In general, the tensile strength of concrete is so small that it is less than about 1/10 of the compressive strength. showed an increase in the results.
보강섬유는 섬도는 직경 1mm이하의 15-30mm의 미세 합성섬유 단섬유가 바람직한데, 그 이유는 15mm 미만에서는 응집력, 결합력 효과가 미미하여 균열방지에 기여하는 정도가 미미하고, 30 mm가 초과할 경우에는 타성분과의 분산성이 저하되어 경화물의 내구성을 오히려 저하시킬 수 있다. As for the reinforcing fiber, it is desirable to have a fine synthetic fiber short fiber with a fineness of 15-30 mm with a diameter of 1 mm or less. In this case, the dispersibility with other components may be lowered, and thus the durability of the cured product may be reduced.
상기 합성섬유 단섬유로는 폴리에스테르계 단섬유, 폴리에틸렌계 단섬유, 폴리프로필렌계 단섬유, 아크릴계 단섬유, 폴리아미드계 단섬유, 폴리비닐알코올계 단섬유, 폴리염화비닐계 단섬유 및 폴리염화비닐리덴계 단섬유로 이루어진 군으로부터 선택된 1종 이상인 것일 수 있다. The synthetic staple fibers include polyester staple fibers, polyethylene staple fibers, polypropylene staple fibers, acrylic staple fibers, polyamide staple fibers, polyvinyl alcohol staple fibers, polyvinyl chloride staple fibers, and polychlorinated fibers. It may be at least one selected from the group consisting of vinylidene-based short fibers.
본 발명은 상기 흐름방지제를 포함한다. 도료는 도포시에 전단속도가 커서, 즉 도료의 점도가 낮아서 도장시에 표면에 골고루 잘 도포되어야 하는 특성(요변성)이 필요하다. 그러나, 도장후에는 반대로 도포된 상태가 무너지는 현상은 방지할 필요가 있다(증점성). 이와 같이 외부에서 가해지는 힘의 변화에 의해 시간에 따라 구조의 변화가 일어나 구조점도가 변하는 현상을 틱소트로피(Thixotrophy: 칙소성) 이라하는데, 칙소성이 있는 도료는 요변성의 성질과 증점성의 성질을 적절히 조화를 이루게 하는 것이 필요하고, 이를 위해 흐름방지제(요변제, 증점제)를 첨가한다. 본 발명은 무기계의 몰탈성분과 유기계의 수지성분을 한 계(SYSTEM)내에 포함하고 있고, 더욱이 보강섬유를 포함하고 있어서 적절한 흐름방지제의 선택이 필요하다. 본 발명의 흐름방지제는 유기계의 소수성과 친수성의 것을 혼합하여 사용한다. 구체적으로 본 발명은 흐름방지제로서 폴리아미드 왁스와 폴라아크릴산나트륨을 중량비로 약 1:1의 비율로 사용한다. 일반적으로 흐름방지제는 소수성이나 친수성의 것 어느 하나만을 사용하나 본 발명에서는 위 2가지 종류의 것 모두를 중량비로 약 1;1로 혼합사용해야 도료제조시(혼합시) 및 도장작업시 편리한 것으로 나타났다. 이는 유기계와 무기계 및 보강섬유를 모두 포함하고 있는 본 발명의 조성물의 특성에서 기인한 것으로 사료된다. 본 발명의 흐름방지제는 포틀랜드 시멘트 100중량부에 대해 3 ~ 5 중량부를 포함한다. 3 중량부 미만에서는 흐름방지의 기능이 미미하고 5중량부 초과에서는 점성이 과도하게 증가하여 작업성이 나빠지는 현상이 발생한다.The present invention includes the flow inhibitor. The paint has a high shear rate at the time of application, that is, the viscosity of the paint is low. However, it is necessary to prevent the phenomenon that the coated state collapses after coating (thickening property). This phenomenon of structural viscosity change due to the change of external force over time is called thixotrophy. It is necessary to properly harmonize the properties, and for this purpose, an anti-flow agent (thixotropic agent, thickener) is added. The present invention contains an inorganic mortar component and an organic resin component within the limits (SYSTEM), and furthermore, it contains reinforcing fibers, so it is necessary to select an appropriate flow inhibitor. The flow inhibitor of the present invention is used by mixing organic hydrophobic and hydrophilic ones. Specifically, the present invention uses polyamide wax and sodium polyacrylate in a weight ratio of about 1:1 as a flow inhibitor. Generally, either one of hydrophobicity or hydrophilicity is used as the flow inhibitor, but in the present invention, both of the above two types should be mixed and used in a weight ratio of about 1:1. This is considered to be due to the characteristics of the composition of the present invention containing both organic, inorganic and reinforcing fibers. The flow inhibitor of the present invention contains 3 to 5 parts by weight based on 100 parts by weight of Portland cement. If it is less than 3 parts by weight, the flow prevention function is insignificant, and if it is more than 5 parts by weight, the viscosity is excessively increased and the workability deteriorates.
본 발명의 몰탈성분(C)은 또한 본 발명의 몰탈조성물과 콘크리트 표면의 부착력 강화을 위해 N-(히드록시에칠)-N-메칠아미노 프로필 트리메톡시 실란을 포틀랜드 시멘트 100중량부에 대해 5 ~ 13 중량부 포함한다. 상기 N-(히드록시에칠)-N-메칠아미노 프로필 트리메톡시 실란은 일종의 커플링 에이전트로써의 역할을 하는 유기실란으로서, 유연한 분자구조와 저분자량의 고침투성 성질을 지니고 있어, 조성물 중의 포함된 활성 관능기(에폭사이드기, 하이드록시기 등)와 보수 대상인 시멘트콘크리트 등의 무기화합물 표면에 침투하여 층간 부착을 증진시키는 역할을 하게된다. 특히, 본 발명의 조성물 중에서는 주제부(A)의 페놀 노볼락 에폭시 수지의 아민 경화물 및 경화에 참여하지 못한 잔여 에폭시 및 아민 성분이 침투하지 못하는 곳까지 침투하여 가수분해반응을 일으켜 실라놀을 형성하고 이렇게 형성된 실라놀은 자신의 주변에 위치하는 각종 기능기(에폭시 경화물, 몰탈성분내의 시멘트 수화물이나, 보수대상인 콘크리트 표면의 수산화물 또는/및 금속 화합물)와 반응하여 그물망 형태의 경화구조를 생성하면서 강력한 부착력을 나타내고, 외부환경으로부터의 콘크리트 열화인자의 차단기능을 더욱 증가시킨다. 상기 N-(히드록시에칠)-N-메칠아미노 프로필 트리메톡시 실란은 몰탈성분(C)내에서 포틀랜드 시멘트 100중량부에 대해 5 ~ 13중량부 포함하는 것이 바람직하다. 그 함량을 5중량부 초과 적용 시 몰탈조성물의 유화분산성이 불안정하여 층분리가 발생하고 경우에 따라서는 점증 현상이 심하게 일어나 올바른 경화반응 조성물을 얻을 수 없다. 또한 경제성 측면에서도 가격이 높아지게 되어, 산업적용성 측면에서 현실성이 낮아진다. 그 함량을 13 중량부 미만 적용 시에는 수지성분을 포함한 몰탈층과 시멘트콘크리트 표면의 층간 부착력이 나빠지게 된다.The mortar component (C) of the present invention may also contain N-(hydroxyethyl)-N-methylaminopropyl trimethoxy silane, 5 to 100 parts by weight of Portland cement, in order to strengthen the adhesion between the mortar composition of the present invention and the concrete surface. 13 parts by weight. The N-(hydroxyethyl)-N-methylamino propyl trimethoxy silane is an organosilane that serves as a kind of coupling agent. It has a flexible molecular structure and high permeability of low molecular weight, so it is included in the composition. Active functional groups (epoxide groups, hydroxyl groups, etc.) and inorganic compounds such as cement concrete to be repaired penetrate into the surface to promote interlayer adhesion. In particular, in the composition of the present invention, the cured amine of the phenol novolac epoxy resin of the main part (A) and the residual epoxy and amine components that did not participate in curing penetrate to the point where they do not penetrate and cause a hydrolysis reaction to produce silanol. The silanol formed in this way reacts with various functional groups (epoxy hardened material, cement hydrate in mortar component, hydroxide or/and metal compound on the concrete surface to be repaired) located around itself to create a hardened structure in the form of a mesh. While showing strong adhesion, it further increases the blocking function of concrete deterioration factors from the external environment. The N-(hydroxyethyl)-N-methylamino propyl trimethoxy silane is preferably contained in an amount of 5 to 13 parts by weight based on 100 parts by weight of Portland cement in the mortar component (C). When the content is applied in excess of 5 parts by weight, the emulsion dispersibility of the mortar composition is unstable, resulting in layer separation, and in some cases, the thickening phenomenon is severe, so that a correct curing reaction composition cannot be obtained. In addition, the price increases in terms of economic feasibility, which lowers the practicality in terms of industrial applicability. When the content is less than 13 parts by weight, the adhesion between the mortar layer containing the resin component and the surface of the cement concrete deteriorates.
또한 본 발명의 몰탈성분(C)은 도료중에 첨가되는 각종의 첨가제를 포함할 수 있는데, 소포제, 습윤제, 분산제를 포틀랜드 시멘트 100중량부에 대해 각각0.2 ~ 1 중량부, 0.1 ~ 0.5 중량부, 0. ~ 0.5 중량부 포함한다. 이러한 물질의 기능 및 역할과 상업적인 구득 가능성은 당업계에서 널리 알려진 것으로서 상술하지 않는다. In addition, the mortar component (C) of the present invention may include various additives added to the paint, and each 0.2 to 1 part by weight, 0.1 to 0.5 part by weight, 0 .~ 0.5 parts by weight. The functions and roles of these materials and their commercial availability are well known in the art and are not described in detail.
또한 본 발명의 몰탈성분(C)은 지르코니아 성분을 포함한다. 상기 지르코니아는 고강도의 세라믹으로서, 비표면적이 넓어 본 발명의 몰탈조성물의 포졸란 반응을 매우 효과적으로 진행시킬 수가 있다. 이에 따라 몰탈조성물의 경화 전 작업성을 개선시키고, 수화열을 감소시키며, 콘크리트의 장기적인 강도 증가에 긍정적인 영향을 미칠 수 있다. 또한 시멘트의 입자에 비해 상당히 미세하기 때문에 포틀랜드 시멘트와 슬래그 사이에 충전되어 우수한 방수성, 내약품성 및 내동결 융해성을 나타낼 수 있게된다. 상기 지르코니아는 포틀랜드 시멘트 100 중량부에 대하여 1 ~ 5중량부로 포함되는 것이 바람직한데, 1 중량부 미만일 경우 강도의 저하와 내구성능의 감소로 보수용 모르타르로서의 기능이 저하될 우려가 있으며, 5중량부를 초과할 경우 작업성이 저하될 뿐만 아니라 경화가 늦어질 우려가 있다.In addition, the mortar component (C) of the present invention includes a zirconia component. The zirconia is a high-strength ceramic, and has a wide specific surface area, so that the pozzolanic reaction of the mortar composition of the present invention can be carried out very effectively. Accordingly, it can improve the workability of the mortar composition before hardening, reduce the heat of hydration, and have a positive effect on the long-term strength increase of concrete. In addition, since it is considerably finer than the particles of cement, it is filled between Portland cement and slag to exhibit excellent water resistance, chemical resistance and freeze-melting resistance. The zirconia is preferably included in an amount of 1 to 5 parts by weight based on 100 parts by weight of Portland cement. When it is less than 1 part by weight, there is a risk that the function as a repair mortar may deteriorate due to a decrease in strength and a decrease in durability, and 5 parts by weight If it is exceeded, workability may deteriorate as well as hardening may be delayed.
본 발명의 폴리머 몰탈조성물은 상기 시멘트 몰탈(C) 100중량부에 대해 주제부(A) 2 - 7 중량부 경화제부(B) 0.5 - 2 중량부를 혼합하여 고내식성 중성화 방지 친환경 폴리머 몰탈조성물을 제조할 수 있다. The polymer mortar composition of the present invention is prepared by mixing 2-7 parts by weight of the main part (A) and 0.5-2 parts by weight of the hardener part (B) with respect to 100 parts by weight of the cement mortar (C) to prepare an eco-friendly polymer mortar composition for preventing neutralization of high corrosion resistance can do.
본 발명의 다른 관점에서, 본 발명은 콘크리트 구조물의 보수보강방법을 제공한다. 본 발명의 콘크리트 구조물의 보수보강방법은, 열화된 콘크리트 구조물을 치핑하고 세정하는 전처리 단계; 및 전처리된 콘크리트 구조물에 본 발명의 일 실시예에 따른 폴리머 몰탈 조성물을 타설하는 보수 단계;를 포함한다. 상기 전처리 단계는, 열화된 콘크리트 구조물을 치핑하고 세정하는 단계로, 콘크리트 구조물의 열화된 영역의 이물질 및 틈을 제거하고 표면적을 늘림으로써 콘크리트 구조물과 몰탈 조성물의 부착력을 향상시키기 위해 수행된다. 치핑 및 세정은 이 기술이 속하는 분야에서 수행될 수 있는 방법이라면 특별히 제한되지 않고 다양한 방식으로 수행될 수 있다.In another aspect of the present invention, the present invention provides a method for repair and reinforcement of a concrete structure. The method of repairing and reinforcing a concrete structure of the present invention includes a pretreatment step of chipping and cleaning the deteriorated concrete structure; and a repair step of pouring the polymer mortar composition according to an embodiment of the present invention on the pretreated concrete structure. The pretreatment step is a step of chipping and cleaning the deteriorated concrete structure, and is performed to improve adhesion between the concrete structure and the mortar composition by removing foreign substances and gaps in the deteriorated area of the concrete structure and increasing the surface area. Chipping and cleaning are not particularly limited as long as they can be performed in the field to which this technology belongs, and may be performed in various ways.
상기 보수 단계는, 전처리 단계를 통해 표면이 정리된 열화된 콘크리트 구조물에 앞서 설명한 본 발명의 폴리머 몰탈 조성물을 타설하여 열화된 영역을 보수하는 단계로, 여기서 사용되는 몰탈 조성물은 앞서 충분히 설명되었으므로, 중복되는 설명은 생략한다. The repair step is a step of repairing the deteriorated area by pouring the polymer mortar composition of the present invention described above on the deteriorated concrete structure whose surface has been cleaned through the pretreatment step, and the mortar composition used here has been sufficiently described above, so overlapping A description will be omitted.
상기 전처리 단계와 보수 단계 사이에, 콘크리트 구조물에 포함된 철근 등의 부식을 방지하기 위한 방청 단계; 및 프라이머 도포 단계; 중 적어도 어느 하나 이상의 단계가 추가로 더 수행될 수 있다. 상기 방청 단계는, 콘크리트 구조물의 열화에 의해 노출된 철근의 부식을 방지하기 위해 선택적으로 수행될 수 있으며, 전처리 단계를 거친 콘크리트 구조물 표면에 방청환원제를 붓이나 롤러 등을 이용하여 도포하는 방식으로 수행될 수 있다. 이때, 사용되는 방청환원제는 아질산계리튬염 및 실란(SiH4)일 수 있으나, 이에 제한되는 것은 아니다. Between the pretreatment step and the repair step, a rust prevention step for preventing corrosion of reinforcing bars included in the concrete structure; and applying a primer; At least any one or more steps may be further performed. The rust prevention step may be selectively performed to prevent corrosion of reinforcing bars exposed due to deterioration of the concrete structure, and a rust prevention reducing agent is applied to the surface of the concrete structure that has undergone the pretreatment step by using a brush or roller. can be In this case, the antirust reducing agent used may be a nitrite-based lithium salt and silane (SiH4), but is not limited thereto.
상기 프라이머 도포 단계는, 콘크리트 구조물과 몰탈 조성물의 부착력을 향상시키고, 콘크리트 구조물의 열화를 방지하기 위해 수행될 수 있다. 프라이머 도포 단계는, 전처리 단계 이후에 수행될 수 있고, 방청 단계가 수행되는 경우에는 방청 단계 이후에 수행될 수 있다. 이때 사용되는 프라이머로 아크릴변성에폭시수지, 변성지방족아민, 반응촉진제, 흐름조정제 및 프롬시멘트를 포함하는 변성에폭시계 프라이머가 사용될 수 있다. 보다 구체적으로, 아크릴변성에폭시수지 100 중량부, 변성지방족아민 40~75 중량부, 반응촉진제 2~6 중량부, 흐름조정제 6~15 중량부 및 프롬시멘트 2~9 중량부를 포함할수 있다. The primer application step may be performed to improve adhesion between the concrete structure and the mortar composition, and to prevent deterioration of the concrete structure. The primer application step may be performed after the pretreatment step, and if the rust prevention step is performed, it may be performed after the rust prevention step. As a primer used at this time, a modified epoxy-based primer containing an acrylic-modified epoxy resin, a modified aliphatic amine, a reaction accelerator, a flow regulator, and from cement may be used. More specifically, it may include 100 parts by weight of an acrylic-modified epoxy resin, 40 to 75 parts by weight of a modified aliphatic amine, 2 to 6 parts by weight of a reaction accelerator, 6 to 15 parts by weight of a flow regulator, and 2 to 9 parts by weight of from cement.
한편, 상기 보수 단계 이후에, 필요에 따라 선택적으로 발수제 또는 방수성 코팅제를 도포하는 방수 단계;가 추가로 더 수행될 수 있으며, 이때 사용될 수 있는 발수제나 방수성 코팅제의 성분 및 도포 방법은 이 기술이 속하는 분야에서 사용될 수 있는 것이라면 특별히 제한되지 않고 사용될 수 있다. On the other hand, after the repair step, a waterproof step of selectively applying a water repellent or waterproof coating agent as needed; may be further performed, and the components and application method of the water repellent agent or waterproof coating agent that can be used at this time belong to this technology As long as it can be used in the field, it can be used without particular limitation.
이하 본 발명을 실시예를 통해 상술한다. Hereinafter, the present invention will be described in detail by way of examples.
시멘트 몰탈성분(C)의 제조Preparation of cement mortar component (C)
포틀랜드시멘트 100 중량부(평균입도 37 ㎛), 실리카샌드 43 중량부, 슬래그 20 중량부, PET단섬유 0.2 중량부, 폴리아미드 왁스 2중량부, 폴라아크릴산나트륨 2중량부, 소포제 0.5 중량부, 습윤제 0.3 중량부, 수용성 분산제 0.4 중량부, N-(히드록시에칠)-N-메칠아미노 프로필 트리메톡시 실란 10 중량부, 지르코니아 4 중량부를 포함하는 시멘트 몰탈을 제조하였다. Portland cement 100 parts by weight (average particle size 37 μm), silica sand 43 parts by weight, slag 20 parts by weight, PET short fibers 0.2 parts by weight, polyamide wax 2 parts by weight, sodium polyacrylate 2 parts by weight, antifoaming agent 0.5 parts by weight, wetting agent A cement mortar comprising 0.3 parts by weight, 0.4 parts by weight of a water-soluble dispersant, 10 parts by weight of N-(hydroxyethyl)-N-methylaminopropyl trimethoxysilane, and 4 parts by weight of zirconia was prepared.
폴리머몰탈조성물의 제조 및 경화시멘트 제작(실시예 1)Preparation of polymer mortar composition and production of hardened cement (Example 1)
상기에서 제조한 시멘트 몰탈(C) 100중량부, 수용성 페놀 노볼락 에폭시 수지(세진이앤씨 SR-361N60) 5중량부, 수용성 아민경화제(세진이앤씨 SH-831W50) 1.5 중량부를 혼합하여 본 발명의 폴리머 몰탈조성물을 제조하였다. 100 parts by weight of the cement mortar (C) prepared above, 5 parts by weight of a water-soluble phenol novolak epoxy resin (Sejin E&C SR-361N60), and 1.5 parts by weight of a water-soluble amine curing agent (Sejin E&C SH-831W50) are mixed, and the polymer mortar of the present invention A composition was prepared.
상기에서 얻어진 본 발명의 폴리머 몰탈조성물을 사용하여 KS F 4042(콘크리트 구조물 보수용 폴리머 시멘트 모르타르)에 따라 콘크리트 공시체를 제조하고, 제조된 상기 콘크리트 공시체의 물성에 대해 측정하였다. A concrete specimen was prepared according to KS F 4042 (polymer cement mortar for repairing concrete structures) using the polymer mortar composition of the present invention obtained above, and the physical properties of the prepared concrete specimen were measured.
폴리머몰탈조성물의 제조 및 경화시멘트 제작(실시예 2~4)Preparation of polymer mortar composition and production of hardened cement (Examples 2 to 4)
상기 실시예 1의 방식과 동일한 방법으로 아래 표 1의 함량으로 본 발명의 폴리머 몰탈조성물을 제조하고 같은 방식으로 콘크리트 공시체를 제조하고, 제조된 상기 콘크리트 공시체의 물성에 대해 측정하였다. The polymer mortar composition of the present invention was prepared in the same manner as in Example 1 with the content shown in Table 1 below, and a concrete specimen was prepared in the same manner, and the physical properties of the prepared concrete specimen were measured.
표 1Table 1
* 시멘트: 1종 포틀랜드시멘트(고려시멘트)* Cement: Type 1 Portland Cement (Korea Cement)
* 실리카샌드: 7호사 및 8호사 혼합 실리카 샌드(광명소재(주))* Silica sand: No. 7 and No. 8 mixed silica sand (Kwangmyung Materials Co., Ltd.)
* 슬래그: 고로슬래그 미분말(KS F 2563, 한국기초소재)* Slag: Blast furnace slag fine powder (KS F 2563, Korea Basic Materials)
* PET단섬유: 양각(embossed) 표면의 재생 PET(평균길이 약15mm, 평균 직경 약 0.8mm)* PET Short Fiber: Regenerated PET on the embossed surface (average length about 15mm, average diameter about 0.8mm)
* 폴리아미드왁스: Gihug（Shanghai）Chemical, NEW-0401* Polyamide Wax: Gihug (Shanghai) Chemical, NEW-0401
*폴리아크릴산나트륨: Gihug（Shanghai）Chemical, PN5-307*Sodium polyacrylate: Gihug (Shanghai) Chemical, PN5-307
* 소포제: BYK 사* Defoamer: BYK
* 습윤제: 한국 산노프코 사* Wetting agent: Sannovco Korea
* 지르코니아: Nanjing Youtian Metal Tech. Co., Ltd.* Zirconia: Nanjing Youtian Metal Tech. Co., Ltd.
* 에폭시수지(SR-361N60): 세진이앤씨 사* Epoxy resin (SR-361N60): Sejin E&C
* 아민경화제(SH-831W50): 세진이앤씨 사* Amine hardener (SH-831W50): Sejin E&C
실험예 1(압축강도)Experimental Example 1 (compressive strength)
상기 표 1의 공시체들에 대해 실시예 및 비교예의 압축강도 특성을 비교하기 위하여 압축강도 시험을 실시하였다. 시험 방법은 한국산업규격 KS F 2405에 규정된 강도측정방법에 의하여 실시하여 그 결과를 하기 표 2에 나타내었다.For the specimens in Table 1, a compressive strength test was performed to compare the compressive strength characteristics of Examples and Comparative Examples. The test method was carried out according to the strength measurement method specified in Korean Industrial Standard KS F 2405, and the results are shown in Table 2 below.
실험예 2(휨강도)Experimental Example 2 (flexural strength)
표 1의 실시예 및 비교예의 휨강도를 한국산업규격 KS F 2408에 규정된 강도측정방법에 의하여 실시하여 였으며 그 결과를 하기 표 2에 나타내었다.The flexural strength of Examples and Comparative Examples in Table 1 was performed according to the strength measurement method specified in Korean Industrial Standard KS F 2408, and the results are shown in Table 2 below.
실험예 3(인장강도)Experimental Example 3 (Tensile Strength)
표 1의 실시예 및 비교예의 인장강도를 한국산업규격 KS F 2423(쪼갬 인장강도)에 규정된 강도측정방법에 의하여 실시하여 였으며 그 결과를 하기 표 2에 나타내었다.The tensile strength of Examples and Comparative Examples in Table 1 was carried out according to the strength measurement method specified in Korean Industrial Standard KS F 2423 (Tensile Splitting Strength), and the results are shown in Table 2 below.
실험예 4(내식성/내구성)Experimental Example 4 (corrosion resistance/durability)
표 1의 실시예 및 비교예의 내식성(내구성)을 비교하기 위하여 염소 이온 투과성 시험을 ASTM C 1202(염소이온 투과 시험법)에 규정된 방법에 따라 실시하였다. 상기 시험법은 전위차 60V에서 확산셀의 통과전하량(coulombs)을 6시간 동안 측정하여 아래 산식으로 산출한 값(Qtotal)을 기준으로 콘크리트 중에서의 염소이온 확산특성을 간접적으로 평가하는 방식이다.In order to compare the corrosion resistance (durability) of Examples and Comparative Examples in Table 1, a chlorine ion permeability test was performed according to the method specified in ASTM C 1202 (chlorine ion permeation test method). The test method is a method of indirectly evaluating the diffusion characteristics of chloride ions in concrete based on the value (Q total ) calculated by the following formula by measuring the amount of coulombs of the diffusion cell at a potential difference of 60 V for 6 hours.
표 2Table 2
*표2의 공시체들은 모두 재령 28일을 기준으로 하였다. *All specimens in Table 2 are based on the age of 28 days.
* 작업성은 몰탈성분과 수지성분의 혼합시 혼합의 용이성 및 균일도를 기준으로, 도포시에는 도포면의 평활도 및 흐름성 정도를 우수, 보통, 보통이하로 각각 나누어 평가하였다. * Workability was evaluated based on the ease of mixing and uniformity when mixing the mortar component and the resin component, and the smoothness and flowability of the coated surface during application were evaluated by dividing them into excellent, average, and below average.
*염소이온 투과성: 내식성의 간접 평가방법으로, 6시간 동안의 측정된 전하량을 기준으로 아래와 같은 기준으로 평가하였다. * Chlorine ion permeability: As an indirect evaluation method of corrosion resistance, it was evaluated according to the following criteria based on the amount of charge measured for 6 hours.
- 매우 높음: 측정값 4500 이상 - Very high: reading above 4500
- 높음: 측정값 2500 내지 4500 - High: Measured value 2500 to 4500
- 보통: 1000 내지 2500 - Normal: 1000 to 2500
- 낮음: 1000이하. - Low: 1000 or less.
위 표 2에 나타난 바와 같이, 본 발명에 따른 모르타르 조성물(실시예 1 내지 4)의 압축강도와 휨강도가 비교예의 것보다 전반적으로 우수한 것으로 나타났으나, 비교예 중에서도 비교예 3내지 5은 지르코니아를 본 발명의 함량범위내로 포함된 것들로서 압축강도는 실시예의 것과 유사한 범위내로 측정되었다. 그러나, 비교예 1, 2는 지르코니아를 불포함하고 있거나(비교에 1), 본 발명의 범위 밖(비교예 2)에서 포함하고 있는 것으로 압축강도가 상대적으로 낮게 평가되었다. As shown in Table 2 above, the compressive strength and flexural strength of the mortar compositions (Examples 1 to 4) according to the present invention were generally superior to those of Comparative Examples, but among Comparative Examples, Comparative Examples 3 to 5 were zirconia As those included within the content range of the present invention, the compressive strength was measured within a range similar to that of the Examples. However, Comparative Examples 1 and 2 did not contain zirconia (Comparative 1) or contained outside the scope of the present invention (Comparative Example 2), and the compressive strength was evaluated to be relatively low.
내식성(내지 내구성/중성화 방지)의 간접평가 방법으로 시행한 염소이온투과성 시험에서는 본 발명에 따른 모르타르 조성물(실시예 1 내지 4) 및 비교예 3 내지 5의 것들이 나머지 것(비교예 1, 2) 보다는 양호한 것으로 나타났다. 이는 지르코니아 성분이 강도와 내식성 모두에 영향을 미치는 것으로 평가할 수 있겠다. In the chlorine ion permeability test conducted as an indirect evaluation method of corrosion resistance (to durability/neutralization prevention), the mortar compositions according to the present invention (Examples 1 to 4) and those of Comparative Examples 3 to 5 are the rest (Comparative Examples 1 and 2) appeared to be better than It can be evaluated that the zirconia component affects both strength and corrosion resistance.
인장강도의 경우에는 보강단섬유가 혼합된 것(실시예 1-4, 비교예 1, 3-5)이 불포함하고 있는 것(비교예 2) 보다 상대적으로 우수한 것으로 평가되었다. In the case of tensile strength, the ones in which the reinforcing short fibers were mixed (Examples 1-4, Comparative Examples 1 and 3-5) were evaluated to be relatively superior to those without (Comparative Example 2).
한편, 작업성의 경우, 흐름방지제가 폴리아미드왁스와 폴리아크릴산나트륨이 중량비로 1:1로 혼합된 예가 그렇지 않은 경우보다 몰탈 혼합시 및 도포시 모두의 경우에 있어서, 우수한 것으로 나타났다. On the other hand, in the case of workability, the case in which the flow inhibitor was mixed with polyamide wax and sodium polyacrylate in a weight ratio of 1:1 was superior in both mortar mixing and application than in the case where it was not.
Claims (3)
수용성 페놀 노볼락 에폭시 수지를 포함하는 주제부(A); 상기 주제부(A)의 수지를 경화시키는 수용성 아민 경화제를 포함하는 경화제부(B); 및 포틀랜드시멘트 100중량부에 대해, 실리카 규사 40 ~ 45 중량부, 슬래그 10 ~ 25 중량부, 합성섬유 단섬유 0.02 ~ 0.5 중량부, 흐름조절제 3 ~ 5 중량부, 소포제 0.2 ~ 1 중량부, 습윤제 0.1 ~ 0.5 중량부, 수용성 분산제 0.1 ~ 0.5 중량부, N-(히드록시에칠)-N-메칠아미노 프로필 트리메톡시 실란 5 ~ 13 중량부, 지르코니아 1 ~ 5중량부를 포함하는 시멘트 몰탈(C)를 포함하고,
상기 시멘트 몰탈(C) 100중량부에 대해 주제부(A) 2 - 7 중량부, 경화제부(B) 0.5 - 2 중량부를를 포함하는 것을 특징으로 하는 작업성이 우수한 고내식성 중성화 방지 친환경 폴리머 몰탈조성물.As an eco-friendly polymer mortar composition with high corrosion resistance and anti-neutralization,
a main part (A) comprising a water-soluble phenol novolac epoxy resin; a curing agent part (B) comprising a water-soluble amine curing agent for curing the resin of the main part (A); And with respect to 100 parts by weight of Portland cement, 40 to 45 parts by weight of silica silica sand, 10 to 25 parts by weight of slag, 0.02 to 0.5 parts by weight of short synthetic fibers, 3 to 5 parts by weight of a flow control agent, 0.2 to 1 parts by weight of an antifoaming agent, a wetting agent Cement mortar containing 0.1 to 0.5 parts by weight, 0.1 to 0.5 parts by weight of a water-soluble dispersant, 5 to 13 parts by weight of N-(hydroxyethyl)-N-methylaminopropyl trimethoxysilane, and 1 to 5 parts by weight of zirconia (C ), including
High corrosion resistance neutralization prevention eco-friendly polymer mortar composition with excellent workability, characterized in that it contains 2-7 parts by weight of the main part (A) and 0.5-2 parts by weight of the hardener part (B) with respect to 100 parts by weight of the cement mortar (C) .
상기 흐름조절제는 폴리아미드 왁스와 폴라아크릴산나트륨을 중량비로 약 1:1의 비율로 혼합한 것임을 특징으로 하는 작업성이 우수한 고내식성 중성화 방지 친환경 폴리머 몰탈조성물.The method according to claim 1,
The flow control agent is an eco-friendly polymer mortar composition with excellent workability and excellent corrosion resistance, characterized in that it is a mixture of polyamide wax and sodium polyacrylate in a ratio of about 1:1 by weight.
보수가 필요한 열화된 콘크리트 구조물을 치핑하고 세정하는 1 단계; 및
상기 1단계 처리된 부위에 수용성 페놀 노볼락 에폭시 수지를 포함하는 주제부(A); 상기 주제부(A)의 수지를 경화시키는 수용성 아민 경화제를 포함하는 경화제부(B); 및 포틀랜드시멘트 100중량부에 대해, 실리카 규사 40 ~ 45 중량부, 슬래그 10 ~ 25 중량부, 합성섬유 단섬유 0.02 ~ 0.5 중량부, 흐름조절제 3 ~ 5 중량부, 소포제 0.2 ~ 1 중량부, 습윤제 0.1 ~ 0.5 중량부, 수용성 분산제 0.1 ~ 0.5 중량부, N-(히드록시에칠)-N-메칠아미노 프로필 트리메톡시 실란 5 ~ 13 중량부, 지르코니아 1 ~ 5중량부를 포함하는 시멘트 몰탈(C)를 포함하고, 상기 시멘트 몰탈(C) 100중량부에 대해 주제부(A) 2 - 7 중량부, 경화제부(B) 0.5 - 2 중량부를를 혼합한 것을 도포하여 타설하는 2단계;를 포함하여 이루어지는 것을 특징으로 하는 콘크리트 구조물의 보수보강방법.
In the method of repairing a concrete section requiring repair,
Step 1 of chipping and cleaning the deteriorated concrete structure in need of repair; and
a main part (A) containing a water-soluble phenol novolac epoxy resin in the first-step treated area; a curing agent part (B) comprising a water-soluble amine curing agent for curing the resin of the main part (A); And with respect to 100 parts by weight of Portland cement, 40 to 45 parts by weight of silica silica sand, 10 to 25 parts by weight of slag, 0.02 to 0.5 parts by weight of short synthetic fibers, 3 to 5 parts by weight of a flow control agent, 0.2 to 1 parts by weight of an antifoaming agent, a wetting agent Cement mortar containing 0.1 to 0.5 parts by weight, 0.1 to 0.5 parts by weight of a water-soluble dispersant, 5 to 13 parts by weight of N-(hydroxyethyl)-N-methylaminopropyl trimethoxysilane, and 1 to 5 parts by weight of zirconia (C ), and the second step of applying and pouring a mixture of 2 - 7 parts by weight of the main part (A) and 0.5 - 2 parts by weight of the hardener (B) with respect to 100 parts by weight of the cement mortar (C); including; A method of repairing and reinforcing a concrete structure, characterized in that it is made.
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| KR102065674B1 (en) | 2019-06-28 | 2020-01-14 | 우리건설 주식회사 | Mortar composition for preventing deterioration and repairing of concrete structure and repairing method using the same |
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| CN115572103A (en) * | 2022-11-10 | 2023-01-06 | 深圳市华越新材料有限公司 | Light construction waste reclaimed sand and production method thereof |
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