KR101819478B1 - Quick-hardening cement concrete composition and repairing method for road pavement therewith - Google Patents
Quick-hardening cement concrete composition and repairing method for road pavement therewith Download PDFInfo
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- KR101819478B1 KR101819478B1 KR1020170090332A KR20170090332A KR101819478B1 KR 101819478 B1 KR101819478 B1 KR 101819478B1 KR 1020170090332 A KR1020170090332 A KR 1020170090332A KR 20170090332 A KR20170090332 A KR 20170090332A KR 101819478 B1 KR101819478 B1 KR 101819478B1
- Authority
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- Prior art keywords
- weight
- concrete composition
- cement concrete
- cement
- quick
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- 239000004567 concrete Substances 0.000 title claims abstract description 110
- 239000004568 cement Substances 0.000 title claims abstract description 87
- 239000000203 mixture Substances 0.000 title claims abstract description 82
- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000011230 binding agent Substances 0.000 claims abstract description 42
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 36
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 claims abstract description 22
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 16
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 12
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000011398 Portland cement Substances 0.000 claims abstract description 11
- 239000011575 calcium Substances 0.000 claims abstract description 11
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 11
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 claims abstract description 11
- 229910052808 lithium carbonate Inorganic materials 0.000 claims abstract description 11
- 239000011777 magnesium Substances 0.000 claims abstract description 11
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 11
- 229910052943 magnesium sulfate Inorganic materials 0.000 claims abstract description 11
- 235000019341 magnesium sulphate Nutrition 0.000 claims abstract description 11
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 10
- 229920001577 copolymer Polymers 0.000 claims abstract description 10
- -1 magnesium sulfonate aluminate Chemical class 0.000 claims abstract description 3
- 238000012360 testing method Methods 0.000 claims description 20
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 claims description 12
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 claims description 12
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 10
- 239000000843 powder Substances 0.000 claims description 10
- 229910001341 Crude steel Inorganic materials 0.000 claims description 9
- OUHCLAKJJGMPSW-UHFFFAOYSA-L magnesium;hydrogen carbonate;hydroxide Chemical compound O.[Mg+2].[O-]C([O-])=O OUHCLAKJJGMPSW-UHFFFAOYSA-L 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 9
- 238000005336 cracking Methods 0.000 claims description 8
- 235000010443 alginic acid Nutrition 0.000 claims description 7
- 229920000615 alginic acid Polymers 0.000 claims description 7
- 239000000783 alginic acid Substances 0.000 claims description 7
- 229960001126 alginic acid Drugs 0.000 claims description 7
- 150000004781 alginic acids Chemical class 0.000 claims description 7
- 230000035515 penetration Effects 0.000 claims description 7
- 230000003014 reinforcing effect Effects 0.000 claims description 7
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 229920003023 plastic Polymers 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 4
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 claims description 3
- 239000011384 asphalt concrete Substances 0.000 claims description 3
- 229910000423 chromium oxide Inorganic materials 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000001704 evaporation Methods 0.000 claims description 3
- 230000008020 evaporation Effects 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 3
- 230000008439 repair process Effects 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 2
- 239000000460 chlorine Substances 0.000 claims description 2
- 229910052801 chlorine Inorganic materials 0.000 claims description 2
- 238000004898 kneading Methods 0.000 claims description 2
- 239000002344 surface layer Substances 0.000 claims description 2
- 231100000614 poison Toxicity 0.000 claims 1
- 239000003440 toxic substance Substances 0.000 claims 1
- 230000006872 improvement Effects 0.000 abstract description 19
- 239000010440 gypsum Substances 0.000 abstract description 11
- 229910052602 gypsum Inorganic materials 0.000 abstract description 11
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 abstract description 9
- 229910052901 montmorillonite Inorganic materials 0.000 abstract description 9
- 239000002893 slag Substances 0.000 abstract description 9
- 239000005038 ethylene vinyl acetate Substances 0.000 abstract description 8
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 abstract description 8
- 230000007797 corrosion Effects 0.000 abstract description 5
- 238000005260 corrosion Methods 0.000 abstract description 5
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 abstract description 4
- 238000006703 hydration reaction Methods 0.000 abstract description 3
- 238000000280 densification Methods 0.000 abstract description 2
- 230000036571 hydration Effects 0.000 abstract description 2
- 230000008602 contraction Effects 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 36
- 230000000694 effects Effects 0.000 description 18
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 15
- 238000011161 development Methods 0.000 description 10
- 230000008859 change Effects 0.000 description 9
- 239000003340 retarding agent Substances 0.000 description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 238000005299 abrasion Methods 0.000 description 6
- 230000006866 deterioration Effects 0.000 description 6
- 238000000926 separation method Methods 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 239000002253 acid Substances 0.000 description 5
- 235000015165 citric acid Nutrition 0.000 description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 239000013530 defoamer Substances 0.000 description 4
- 239000011388 polymer cement concrete Substances 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- 238000001035 drying Methods 0.000 description 3
- XRPZVNIXPWZPCA-UHFFFAOYSA-N ethenyl acetate;styrene Chemical compound CC(=O)OC=C.C=CC1=CC=CC=C1 XRPZVNIXPWZPCA-UHFFFAOYSA-N 0.000 description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000006386 neutralization reaction Methods 0.000 description 3
- 229920001296 polysiloxane Polymers 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 229910021555 Chromium Chloride Inorganic materials 0.000 description 2
- RGHNJXZEOKUKBD-SQOUGZDYSA-N D-gluconic acid Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C(O)=O RGHNJXZEOKUKBD-SQOUGZDYSA-N 0.000 description 2
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- WQZGKKKJIJFFOK-VFUOTHLCSA-N beta-D-glucose Chemical compound OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-VFUOTHLCSA-N 0.000 description 2
- 150000001844 chromium Chemical class 0.000 description 2
- QSWDMMVNRMROPK-UHFFFAOYSA-K chromium(3+) trichloride Chemical compound [Cl-].[Cl-].[Cl-].[Cr+3] QSWDMMVNRMROPK-UHFFFAOYSA-K 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 239000008103 glucose Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- BJEPYKJPYRNKOW-REOHCLBHSA-N (S)-malic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O BJEPYKJPYRNKOW-REOHCLBHSA-N 0.000 description 1
- RGHNJXZEOKUKBD-UHFFFAOYSA-N D-gluconic acid Natural products OCC(O)C(O)C(O)C(O)C(O)=O RGHNJXZEOKUKBD-UHFFFAOYSA-N 0.000 description 1
- 229920002307 Dextran Polymers 0.000 description 1
- ABLZXFCXXLZCGV-UHFFFAOYSA-N Phosphorous acid Chemical compound OP(O)=O ABLZXFCXXLZCGV-UHFFFAOYSA-N 0.000 description 1
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- BJEPYKJPYRNKOW-UHFFFAOYSA-N alpha-hydroxysuccinic acid Natural products OC(=O)C(O)CC(O)=O BJEPYKJPYRNKOW-UHFFFAOYSA-N 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 150000001720 carbohydrates Chemical class 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 239000000174 gluconic acid Substances 0.000 description 1
- 235000012208 gluconic acid Nutrition 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- FZWBNHMXJMCXLU-BLAUPYHCSA-N isomaltotriose Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@@H]1OC[C@@H]1[C@@H](O)[C@H](O)[C@@H](O)[C@@H](OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C=O)O1 FZWBNHMXJMCXLU-BLAUPYHCSA-N 0.000 description 1
- 238000005339 levitation Methods 0.000 description 1
- 235000011090 malic acid Nutrition 0.000 description 1
- 239000001630 malic acid Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000011433 polymer cement mortar Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 239000012085 test solution Substances 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
Classifications
-
- 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
- C04B28/06—Aluminous cements
- C04B28/065—Calcium aluminosulfate cements, e.g. cements hydrating into ettringite
-
- 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
- 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
-
- 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
- C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
- C04B22/08—Acids or salts thereof
- C04B22/10—Acids or salts thereof containing carbon in the anion
-
- 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
- C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
- C04B22/08—Acids or salts thereof
- C04B22/14—Acids or salts thereof containing sulfur in the anion, e.g. sulfides
- C04B22/142—Sulfates
- C04B22/143—Calcium-sulfate
-
- 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
- C04B24/26—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C04B24/2641—Polyacrylates; Polymethacrylates
-
- 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
- C04B24/38—Polysaccharides or derivatives 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
- C04B7/00—Hydraulic cements
- C04B7/02—Portland cement
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C11/00—Details of pavings
- E01C11/005—Methods or materials for repairing pavings
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/10—Coherent pavings made in situ made of road-metal and binders of road-metal and cement or like binders
- E01C7/14—Concrete paving
- E01C7/147—Repairing concrete pavings, e.g. joining cracked road sections by dowels, applying a new concrete covering
-
- 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
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
-
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Civil Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Architecture (AREA)
- Environmental & Geological Engineering (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Description
본 발명은 성능 개선 초속경 시멘트 콘크리트 조성물 및 이를 이용한 도로 포장 보수 공법에 관한 것으로, 보다 구체적으로는 교량 오버레이 포장, 콘크리트 포장의 증설, 콘크리트 포장 보수공사 등의 콘크리트로 이루어진 토목 구조물 보수공사에 사용되는 성능 개선 초속경 시멘트 콘크리트 조성물 및 이를 이용한 도로 포장 보수 공법에 관한 것이다.More particularly, the present invention relates to a method for repairing civil engineering structures made of concrete such as bridge overlay pavement, expansion of concrete pavement, and repair of concrete pavement. Speed cement concrete composition and road repairing method using the same.
일반적으로 콘크리트 구조물은 열화 등에 의해 콘크리트에 균열이 발생하면 방수 성능 저하, 철근부식, 내구성 저하, 강도 저하 등으로 치명적인 결함을 초래할 수 있다. Generally, if cracks occur in concrete due to deterioration etc., it may cause fatal defects due to deterioration of waterproof performance, corrosion of reinforcing steel, deterioration of durability, and decrease of strength.
그리고, 콘크리트의 균열은 염해, 열화와 같은 외적 환경원인, 설계하중, 소성수축 또는 건조수축과 같은 재료 특성, 배합조건, 시공적인 요인 등의 여러 가지 요인에 의하여 많이 발생한다. Cracks in concrete are caused by various factors such as external environmental causes such as deterioration, deterioration, material properties such as design load, plastic shrinkage or drying shrinkage, mixing conditions, and construction factors.
이와 같은 여러 가지 요인에 의해 콘크리트 구조물에 균열이 발생하게 되면 콘크리트 구조물은 하중을 견디지 못하고 붕괴될 수도 있으므로 균열이 발생된 콘크리트 구조물에 대해서는 방수성, 내구성 등을 회복하기 위하여 혹은 구조물의 안정성, 미관성 등을 고려하여 보수가 필요하다. If cracks occur in the concrete structure due to various factors such as this, the concrete structure can not withstand the load and may collapse. Therefore, in order to recover the waterproofness and durability of the cracked concrete structure, It is necessary to repair it.
한편, 교량의 바닥판, 도로의 노면 및 교량 하부 부분의 부식이나 침식이 많이 일어나는 부위를 보수 및 보강하기 위한 보수공사에는 폴리머 시멘트 모르타르가 널리 사용되고 있다. 초조강 포틀랜드 시멘트는 보통 포틀랜드 시멘트에 비하여 경화시간이 빠르고 초기 강도 발현 등의 우수한 장점이 있는 반하여, 염화물이나 수분의 침투가 발생하여 콘크리트가 부식되는 문제가 초래되고 있다. On the other hand, polymer cement mortar is widely used for maintenance and reinforcement of areas where the bottom plate of a bridge, the road surface and the lower part of the bridge are corroded or eroded. The hardened Portland cement has the advantages of quick curing time and early strength development compared with portland cement. However, the penetration of chlorides and moisture causes the concrete to be corroded.
일반적으로, 콘크리트 구조물을 제작하거나 포장시에는 건조수축에 의한 균열이 발생하며, 표면에 블리이딩으로 인한 레이탄스가 발생하여 표면 강도가 약하고 내구성이 떨어진다는 단점이 있다.Generally, there is a disadvantage in that when the concrete structure is manufactured or packaged, cracks are generated due to drying shrinkage, and the surface of the concrete structure is subjected to levitation due to bleeding, resulting in weak surface strength and durability.
따라서, 본 발명에서 해결하고자 하는 기술적 과제는 성능 개선 초속경 시멘트 콘크리트 조성물을 제공하기 위한 것이다.SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-mentioned problems occurring in the prior art.
또한, 본 발명에서 해결하고자 하는 다른 기술적 과제는 상기 성능 개선 초속경 시멘트 콘크리트 조성물을 이용한 도로 포장 보수공법을 제공하기 위한 것이다.Another object of the present invention is to provide a road repairing method using the performance improving quick-release cement concrete composition.
상기한 기술적 과제를 해결하기 위하여, 본 발명에서는 성능 개선 결합재 3∼40중량%, 잔골재 5∼70중량%, 굵은골재 5∼65중량% 및 물 0.1∼30 중량%를 포함하며, 상기 성능 개선 결합재는 조강 포틀랜드 시멘트 10∼70중량%, 칼슘 또는 마그네슘 설포알루미네이트 3∼40중량%, 알루미나 시멘트 0.1∼30중량%, 견운모 0.1∼30중량%, 분말도가 4,500∼8,500㎠/g인 고로슬래그 분말 0.1∼30중량%, 석고 0.1∼20중량%, 몬모릴로나이트 0.01~20중량%, 크로뮴산염 0.01∼10중량%, 리튬카보네이트 0.01~10 중량%, 황산마그네슘 0.01∼10중량%, 에틸렌-초산비닐 공중합체 0.01~10중량%, 스티렌-초산비닐 0.01~10중량%, 소포제 0.01~5중량% 및 감수제 0.01~5중량%를 포함하는 것을 특징으로 하는 성능 개선 초속경 시멘트 콘크리트 조성물을 제공한다.In order to solve the above-mentioned technical problems, the present invention is characterized by comprising 3 to 40% by weight of performance improving binder, 5 to 70% by weight of fine aggregate, 5 to 65% by weight of coarse aggregate and 0.1 to 30% Wherein the blast furnace slag powder comprises 10 to 70% by weight of crude steel Portland cement, 3 to 40% by weight of calcium or magnesium sulfoaluminate, 0.1 to 30% by weight of alumina cement, 0.1 to 30% by weight of sericite and a powdery degree of 4,500 to 8,500 cm & 0.1 to 30% by weight of gypsum, 0.1 to 20% by weight of gypsum, 0.01 to 20% by weight of montmorillonite, 0.01 to 10% by weight of chromium oxide, 0.01 to 10% by weight of lithium carbonate, 0.01 to 10% by weight of magnesium sulfate, 0.01 to 10% by weight of styrene-vinyl acetate, 0.01 to 10% by weight of styrene-vinyl acetate, 0.01 to 5% by weight of defoamer, and 0.01 to 5% by weight of water reducing agent.
상기 성능 개선 결합재는 알긴산 0.01∼10중량%를 더 포함할 수 있다.The performance improving binder may further include 0.01 to 10% by weight of alginic acid.
또한, 상기 성능 개선 결합재는 재료분리방지 및 내수성을 개선하기 위하여 폴리아크릴산나트륨 0.01∼10중량%를 더 포함할 수 있다.In addition, the performance improving binder may further include 0.01 to 10% by weight of sodium polyacrylate in order to prevent material separation and improve water resistance.
또한, 상기 성능 개선 결합재는 히드록시탄산마그네슘 0.01∼10중량%를 더 포함할 수 있다.In addition, the performance improving binder may further include 0.01 to 10% by weight of magnesium hydroxycarbonate.
또한, 상기 성능 개선 결합재는 지연제 0.01∼5중량%를 더 포함할 수 있다.In addition, the performance improving binder may further include 0.01 to 5% by weight of retarder.
또한, 본 발명에서는 상기한 다른 기술적 과제를 해결하기 위하여, 하기 단계를 포함하는 것을 특징으로 하는 상기 성능 개선 초속경 시멘트 콘크리트 조성물을 이용한 도로 포장 보수 공법을 제공한다. The present invention also provides a method of repairing road pavement using the performance improving quick-release cement concrete composition, which comprises the following steps to solve the above-mentioned other technical problems.
콘크리트 구조물의 열화된 부위 및 아스팔트 콘크리트를 노면 파쇄기를 이용하여 제거하는 단계와, 제거된 부위를 워터젯, 고압세척기, 핸드 워터젯 등으로 열화된 부위까지 제거한 후 진공흡입차량으로 청소하는 단계와, 상기 성능 개선 초속경 시멘트 콘크리트 조성물이 구체 콘크리트에 부착되기 용이하게 하고 표층강화, 유해물질, 물, 염소이온 등의 침투를 억제하고 내수성을 개선하기 위하여 상기 청소된 부위에 프라이머 또는 블루밍 처리를 하는 단계와, 상기 프라이머 또는 블루밍이 처리 된 상부에 상기 성능 개선 초속경 시멘트 콘크리트 조성물을 타설하여 열화된 부위의 단면을 보수 또는 보강하는 단계와, 타설된 상기 성능 개선 초속경 시멘트 콘크리트 조성물 표면의 미끄럼 저항성을 개선시키기 위하여 종·횡방향의 타이닝을 실시하는 단계; 및 상기 타이닝된 상기 성능 개선 초속경 시멘트 콘크리트 조성물 상부에 수분 증발을 방지하여 소성균열을 억제하기 위하여 피막 양생제를 도포하는 단계를 포함한다. Removing the deteriorated portion of the concrete structure and the asphalt concrete using a road surface crusher, removing the removed portion to a site deteriorated by a water jet, a high pressure washer, a hand water jet, etc., and then cleaning the removed portion with a vacuum suction vehicle, A primer or blooming treatment is applied to the cleaned area to facilitate adhesion of the improved rapid curing cement concrete composition to the concrete and to strengthen the surface layer, to inhibit penetration of harmful substances, water, chlorine ions, and improve water resistance; The present invention relates to a method for improving the resistance to slipping of a cement based concrete composition, which comprises the steps of repairing or reinforcing a section of a deteriorated portion by placing the performance improving quick-release cement concrete composition on an upper portion treated with the primer or blooming, In order to carry out longitudinal and lateral tinning. step; And applying a coating curing agent to prevent evaporation of moisture on the surface of the tempered rapid curing cement concrete composition to prevent plastic cracking.
본 발명에 의하면, 성능 개선 결합재를 사용함으로써 콘크리트의 작업성 및 시공성을 향상시킬 수 있고, 콘크리트의 인성 및 부착강도를 개선하며, 수축을 저감시켜 수축 균열을 방지하고 내구성을 개선시킨다. 또한, 포졸란 반응에 의하여 수화 및 내부 조직의 치밀화를 촉진하여 밀실한 콘크리트를 만들 수 있어 콘크리트의 강도 및 내구성, 특히 방수성, 내식성을 개선할 수 있다. 또한, 팽창재와 수축저감제를 사용함으로써 건조수축에 의한 표면균열 및 팽창파괴현상을 방지하는 효과를 발휘할 수 있는 효과를 얻을 수 있다. 한편, 포장에 요구되는 제반 특성, 즉 수밀성, 부착성, 내구성 및 균열 저항성 등을 모두 만족할 수 있다. According to the present invention, by using the performance improving binder, workability and workability of concrete can be improved, toughness and adhesion strength of concrete can be improved, shrinkage is reduced, shrinkage cracking is prevented, and durability is improved. In addition, hydration and densification of internal structure can be promoted by the pozzolanic reaction, so that the concrete can be made tight, thereby improving the strength and durability of the concrete, in particular, the waterproof property and the corrosion resistance. Further, by using the expanding material and the shrinkage reducing agent, an effect of preventing surface cracking and expansion / fracture due to drying shrinkage can be obtained. On the other hand, all of the characteristics required for packaging, that is, water tightness, adhesion, durability and crack resistance can all be satisfied.
본 발명의 성능 개선 초속경 시멘트 콘크리트 조성물은 성능 개선 결합재 3∼40중량%, 잔골재 5∼70중량%, 굵은골재 5∼65중량% 및 물 0.1∼30 중량%를 포함하는 것을 특징으로 한다.The performance improving quick-setting cement concrete composition of the present invention is characterized by containing 3 to 40% by weight of performance improving binder, 5 to 70% by weight of fine aggregate, 5 to 65% by weight of coarse aggregate and 0.1 to 30% by weight of water.
본 발명에서 사용하는 골재는 잔골재와 굵은 골재로 구분되며, 입경이 5mm 이하인 것을 잔골재라 하고 입경이 5mm 보다 큰 것을 굵은 골재로 구분한다. 잔골재는 본 발명의 성능 개선 초속경 시멘트 콘크리트 조성물에 대하여 5∼70중량% 함유되는 것이 바람직하고, 굵은 골재는 본 발명의 성능 개선 초속경 시멘트 콘크리트 조성물에 대하여 5∼65중량% 함유되는 것이 바람직하다. The aggregate used in the present invention is classified into a fine aggregate and a fine aggregate having a particle diameter of 5 mm or less and a fine aggregate having a particle diameter larger than 5 mm. The fine aggregate is preferably contained in an amount of 5 to 70% by weight based on the performance improving ultra rapid cement concrete composition of the present invention, and the coarse aggregate is preferably contained in an amount of 5 to 65% by weight based on the performance improving ultra rapid cement concrete composition of the present invention .
상기 성능 개선 결합재는 조강 포틀랜드 시멘트 10∼70중량%, 칼슘 또는 마그네슘 설포알루미네이트 3∼40중량%, 알루미나 시멘트 0.1∼30중량%, 견운모 0.1∼30중량%, 분말도가 4,500∼8,500㎠/g인 고로슬래그 분말 0.1∼30중량%, 석고 0.1∼20중량%, 몬모릴로나이트 0.01~20중량%, 크로뮴산염 0.01∼10중량%, 리튬카보네이트 0.01~10 중량%, 황산마그네슘 0.01∼10중량%, 에틸렌-초산비닐 공중합체 0.01~10중량%, 스티렌-초산비닐 0.01~10중량%, 소포제 0.01~5중량% 및 감수제 0.01~5중량%를 포함할 수 있다. Wherein the performance improving binder comprises 10 to 70% by weight of crude steel Portland cement, 3 to 40% by weight of calcium or magnesium sulfoaluminate, 0.1 to 30% by weight of alumina cement, 0.1 to 30% by weight of sericite and a powder degree of 4,500 to 8,500 cm & 0.01 to 10 wt% of chromium oxide, 0.01 to 10 wt% of lithium carbonate, 0.01 to 10 wt% of magnesium sulfate, 0.01 to 10 wt% of calcium carbonate, 0.01 to 10% by weight of a vinyl acetate copolymer, 0.01 to 10% by weight of styrene-vinyl acetate, 0.01 to 5% by weight of an antifoamer and 0.01 to 5% by weight of a water reducing agent.
상기 조강 포틀랜드 시멘트는 KS에 규정된 것을 사용하는 것이 바람직하며, 상기 성능 개선 결합재에 대하여 10∼60중량% 함유되는 것이 바람직하다. The crude steel portland cement is preferably used as specified in KS, and is preferably contained in an amount of 10 to 60% by weight based on the performance improving binder.
상기 칼슘 또는 마그네슘 설포알루미네이트의 중량비가 증가하면 빠른 경화특성을 나타낸다. 상기 칼슘 또는 마그네슘 설포알루미네이트는 상기 성능 개선 결합재에 대하여 3∼40중량% 함유되는 것이 바람직하다. 상기 칼슘 또는 마그네슘 설포알루미네이트의 함량이 3중량% 미만일 경우에는 콘크리트 강도 개선 효과 및 균열발생 억제 효과가 미약할 수 있고, 상기 칼슘 또는 마그네슘 설포알루미네이트의 함량이 40중량%를 초과할 경우에는 조기강도 발현은 우수하나 작업성 불량 및 제조원가가 높아져 경제적이지 못하다. When the weight ratio of the calcium or magnesium sulfoaluminate is increased, rapid curing characteristics are exhibited. The calcium or magnesium sulfoaluminate is preferably contained in an amount of 3 to 40% by weight based on the performance improving binder. If the content of calcium or magnesium sulfoaluminate is less than 3% by weight, the effect of improving the strength of concrete and the effect of suppressing cracking may be insufficient. If the content of calcium or magnesium sulfoaluminate exceeds 40% by weight, The strength is excellent but the workability is poor and the manufacturing cost is high, which is not economical.
상기 알루미나 시멘트는 초기 강도 발현 및 수축 방지를 위하여 사용한다. 상기 알루미나 시멘트는 조직을 치밀하게 하여 콘크리트의 균열을 방지하고 콘크리트의 수축을 방지하기 위하여 사용한다. 상기 알루미나 시멘트는 상기 성능 개선 결합재에 대하여 0.1∼30중량% 함유되는 것이 바람직하다. 상기 알루미나 시멘트는 중량비가 증가하면 빠른 경화 특성을 나타내며, 상기 알루미나 시멘트의 함량이 상기 성능 개선 결합재에 대하여 0.1중량% 미만일 경우 콘크리트 초기 강도 및 균열 발생 억제 효과가 미약할 수 있고, 상기 알루미나 시멘트의 함량이 30중량%를 초과할 경우에는 빠른 경화 특성으로 인해 좋은 물성을 얻을 수 있으나 제조 원가가 높아져 경제적이지 못하다. The alumina cement is used for initial strength development and shrinkage prevention. The alumina cement is used to prevent cracking of the concrete by making the structure dense and to prevent shrinkage of the concrete. The alumina cement is preferably contained in an amount of 0.1 to 30% by weight based on the performance improving binder. If the content of the alumina cement is less than 0.1% by weight based on the performance improving binder, the initial strength of the concrete and the effect of suppressing the occurrence of cracks may be insignificant, and the content of the alumina cement If it exceeds 30% by weight, good physical properties can be obtained due to quick curing characteristics, but the production cost is high and it is not economical.
상기 견운모는 포졸란 특성, 장기 강도 발현 및 내구성 개선뿐만 아니라 방수 및 지수 효과를 얻기 위하여 사용한다. 상기 견운모는 상기 성능 개선 결합재에 대하여 0.1∼30중량% 함유되는 것이 바람직하다. 상기 견운모의 함량이 0.1중량%미만이면 성능개선효과가 미흡하게 되고, 그 함량이 30중량%를 초과하면 초기 강도 발현이 저하될 수 있다.The sericite is used to obtain waterproof and exponential effects as well as pozzolanic characteristics, long-term strength development and durability improvement. The sericite may be contained in an amount of 0.1 to 30% by weight based on the performance improving binder. If the content of the sericite is less than 0.1 wt%, the performance improvement effect becomes insufficient. If the content of the sericite exceeds 30 wt%, initial strength development may be deteriorated.
상기 고로슬래그 분말은 잠재수경성 특성으로 장기강도발현 및 내구성 증진을 위하여 사용한다. 상기 고로슬래그 분말은 상기 성능 개선 결합재에 대하여 0.1∼30중량% 함유되는 것이 바람직하다. 상기 고로슬래그 분말은 분말도가 4,500∼8,500㎠/g인 것이 바람직하며, 상기 고로슬래그 분말의 함량이 0.1중량% 미만이면 장기강도 발현이나 내구성 증진효과가 미흡할 수 있고, 상기 고로슬래그 분말의 함량이 30중량%를 초과하면 초기강도 발현이 지연될 수 있다.The blast furnace slag powder is used as a latent hydraulic property for the development of long-term strength and the improvement of durability. The blast furnace slag powder is preferably contained in an amount of 0.1 to 30% by weight based on the performance improving binder. The blast furnace slag powder preferably has a powderity of 4,500 to 8,500 cm2 / g. When the content of the blast furnace slag powder is less than 0.1% by weight, the long-time strength development and durability enhancement effect may be insufficient. If it exceeds 30% by weight, the initial strength development may be delayed.
상기 석고는 초기 강도 발현 및 수축 방지를 위하여 사용한다. 상기 석고는 조직을 치밀하게 하여 콘크리트의 균열을 방지하고 콘크리트의 수축을 방지하기 위하여 사용한다. 상기 석고는 상기 성능 개선 결합재에 대하여 0.1∼20중량% 함유되는 것이 바람직하다. 상기 석고의 함량이 상기 성능 개선 결합재에 대하여 0.1중량% 미만일 경우 콘크리트 강도 및 균열 발생 억제 효과가 미약할 수 있고, 상기 석고의 함량이 20중량%를 초과할 경우에는 빠른 경화 특성으로 인해 좋은 물성을 얻을 수 있으나 과 팽창 및 내수성이 저하된다. The gypsum is used for initial strength development and shrinkage prevention. The gypsum is used to prevent cracking of the concrete by making the structure dense and to prevent shrinkage of the concrete. The gypsum is preferably contained in an amount of 0.1 to 20% by weight based on the performance improving binder. If the content of the gypsum is less than 0.1% by weight based on the performance improving binder, the concrete strength and the effect of suppressing the occurrence of cracks may be insufficient. If the content of the gypsum exceeds 20% by weight, But the swelling and water resistance are lowered.
상기 몬모릴로나이트는 백색, 회색 등을 띠며, 부착강도, 재료분리저항성 및 내수성을 개선하기 위하여 사용한다. 상기 몬모릴로나이트는 상기 성능 개선 결합재에 대하여 0.01~20중량% 함유되는 것이 바람직하다. 상기 몬모릴로나이트의 함량이 0.01중량% 미만이면 재료 분리가 발생하기 쉽고, 상기 몬모릴로나이트의 함량이 20중량%를 초과하면 성능은 개선되나 점도가 높아져 작업성이 저하된다. The montmorillonite has a white or gray color and is used for improving the adhesion strength, material separation resistance and water resistance. The montmorillonite is preferably contained in an amount of 0.01 to 20% by weight based on the performance improving binder. When the content of the montmorillonite is less than 0.01% by weight, separation of the material tends to occur. When the content of the montmorillonite exceeds 20% by weight, the performance is improved but the viscosity is increased and the workability is lowered.
상기 크로뮴산염은 강도 및 내식성을 개선하기 위해 사용된다. 상기 크로뮴산염은 상기 성능 개선 결합재에 대하여 0.01∼10중량% 함유되는 것이 바람직하다. 상기 크로뮴산염의 중량비가 증가하면 강도 및 내식성을 나타내며, 상기 크로뮴산염의 함량이 0.01중량% 미만일 경우 강도 및 내식성 개선 효과가 미약할 수 있고, 상기 크로뮴산염의 함량이 10중량%를 초과할 경우에는 더 이상의 성능개선 효과를 얻을 수 없고 제조 원가가 높아져 경제적이지 못하다. The chromates are used to improve strength and corrosion resistance. The chromate salt is preferably contained in an amount of 0.01 to 10% by weight based on the performance improving binder. If the content of the chromium salt is less than 0.01% by weight, the effect of improving the strength and corrosion resistance may be insignificant. If the content of the chromium salt exceeds 10% by weight, The performance improvement effect can not be obtained further, and the manufacturing cost is increased, which is not economical.
상기 리튬카보네이트는 초기 경화 속도를 조절하기 위하여 사용한다. 상기 리튬카보네이트는 상기 성능 개선 결합재에 대하여 0.01∼10중량% 함유되는 것이 바람직하다. 상기 리튬카보네이트의 함량이 0.01중량% 미만일 경우 초기 강도 발현이 늦어지고, 상기 리튬카보네이트의 함량이 10중량%를 초과하면 반응성이 높아져 작업성이 저하되고 가격경쟁력이 저하된다. The lithium carbonate is used to control the initial curing rate. The lithium carbonate is preferably contained in an amount of 0.01 to 10% by weight based on the performance improving binder. When the content of the lithium carbonate is less than 0.01% by weight, the initial strength development is delayed. When the content of the lithium carbonate exceeds 10% by weight, the reactivity is increased and the workability is deteriorated and the price competitiveness is decreased.
상기 황산마그네슘은 내마모성 및 내열성을 개선하기 위해 사용한다. 상기 황산마그네슘은 상기 성능 개선 결합재에 대하여 0.01∼10중량% 함유되는 것이 바람직하다. 상기 황산마그네슘의 함량이 0.01중량% 미만일 경우 성능 개선 효과가 떨어질 수 있으며, 상기 황산마그네슘의 함량이 10중량%를 초과하면 작업성이 저하되고 가격경쟁력이 저하된다. The magnesium sulfate is used for improving abrasion resistance and heat resistance. The magnesium sulfate is preferably contained in an amount of 0.01 to 10% by weight based on the performance improving binder. If the content of magnesium sulfate is less than 0.01% by weight, the performance improving effect may be deteriorated. If the content of magnesium sulfate exceeds 10% by weight, workability is deteriorated and price competitiveness is deteriorated.
상기 에틸렌-초산비닐 공중합체는 결합력 및 내구성능을 개선하기 위하여 사용된다. 상기 에틸렌-초산비닐 공중합체는 상기 성능 개선 결합재에 대하여 0.01~10중량% 함유되는 것이 바람직하다. 상기 에틸렌-초산비닐 공중합체의 함량이 10중량%를 초과하면 내구성능은 개선되나, 초기 강도 발현이 저하될 수 있으며, 상기 에틸렌-초산비닐 공중합체의 함량이 0.01중량% 미만이면 성능 개선효과가 미흡하게 된다. The ethylene-vinyl acetate copolymer is used to improve the bonding strength and endurance performance. The ethylene-vinyl acetate copolymer is preferably contained in an amount of 0.01 to 10% by weight based on the performance improving binder. If the content of the ethylene-vinyl acetate copolymer exceeds 10% by weight, the endurance performance may be improved but the initial strength development may be deteriorated. If the ethylene-vinyl acetate copolymer content is less than 0.01% by weight, It becomes insufficient.
상기 스티렌-초산비닐 공중합체는 인성, 부착강도 및 내구성을 개선하기 위하여 사용된다. 상기 스티렌-초산비닐 공중합체는 상기 개질 혼화제에 대하여 0.01∼10중량% 함유되는 것이 바람직하다. 상기 스티렌-초산비닐 공중합체의 함량이 10중량%를 초과하면 성능은 개선되나, 점도가 높아져 작업성(슬럼프)이 떨어질 수 있고, 상기 스티렌-초산비닐 공중합체의 함량이 0.01중량% 미만이면 인성, 부착강도 및 내구성 개선 효과가 미약할 수 있다. The styrene-vinyl acetate copolymer is used to improve toughness, adhesion strength and durability. The styrene-vinyl acetate copolymer is preferably contained in an amount of 0.01 to 10% by weight based on the modified admixture. If the content of the styrene-vinyl acetate copolymer is more than 10% by weight, the performance may be improved but the viscosity may be increased and the workability (slump) may be lowered. If the styrene-vinyl acetate copolymer content is less than 0.01% , Adhesion strength and durability can be weakly improved.
상기 감수제는 물-시멘트비를 감소시킴으로써 강도 및 내구성이 개선됨과 동시에 조강 시멘트의 수화반응을 지연시켜 초기 작업성을 향상시킬 수 있는 역할을 한다. 상기 감수제는 상기 성능 개선 결합재에 대하여 0.01∼5중량%함유되는 것이 바람직하다. 상기 감수제는 폴리칼본산계 감수제를 사용하는 것이 바람직하다.The water reducing agent improves the strength and durability by reducing the water-cement ratio, and at the same time, serves to improve the initial workability by delaying the hydration reaction of the crude steel cement. The water reducing agent is preferably contained in an amount of 0.01 to 5% by weight based on the performance improving binder. It is preferable to use a polycarboxylic acid-based water reducing agent as the water reducing agent.
상기 소포제는 공기량을 저하시키고, 공극을 저하시켜 강도 및 내구성을 개선하기 위해 사용된다. 상기 소포제는 상기 성능 개선 결합재에 대하여 0.01∼5중량%함유되는 것이 바람직하다. The antifoaming agent is used to lower the air volume and lower the air gap to improve strength and durability. The antifoaming agent is preferably contained in an amount of 0.01 to 5% by weight based on the performance improving binder.
상기 성능 개선 결합재는 알긴산을 더 포함할 수 있다. 상기 알긴산은 재료분리저항성, 내수성 및 수축 저감 효과를 개선하기 위하여 사용한다. 상기 알긴산은 상기 성능 개선 결합재에 대하여 0.01∼10중량% 함유되는 것이 바람직하다. 상기 알긴산의 함량이 0.01중량% 미만일 경우 성능개선 효과가 미약할 수 있고, 상기 알긴산의 함량이 10중량%를 초과할 경우에는 성능 개선효과가 우수하나 작업성 및 가격경쟁력이 저하된다. The performance improving binder may further include alginic acid. The alginic acid is used for improving the material separation resistance, water resistance and shrinkage reduction effect. The alginic acid is preferably contained in an amount of 0.01 to 10% by weight based on the performance improving binder. When the content of alginic acid is less than 0.01% by weight, the performance improvement effect may be insufficient. When the content of alginic acid is more than 10% by weight, the performance improvement effect is excellent, but the workability and price competitiveness are deteriorated.
상기 성능 개선 결합재는 재료분리방지 및 내수성을 개선하기 위하여 폴리아크릴산나트륨을 더 포함할 수 있다. 상기 폴리아크릴산나트륨은 상기 성능 개선 결합재에 대하여 0.01∼10중량% 함유되는 것이 바람직하다. 상기 폴리아크릴산나트륨의 함량이 0.01중량% 미만일 경우 재료분리방지 및 내수성능 개선 효과가 미약할 수 있고, 상기 폴리아크릴산나트륨의 함량이 10중량%를 초과할 경우에는 점도가 높아져 작업성이 저하되고 초기 강도 발현이 저하된다. The performance improving binder may further include sodium polyacrylate to prevent material separation and improve water resistance. The sodium polyacrylate is preferably contained in an amount of 0.01 to 10% by weight based on the performance improving binder. If the content of the sodium polyacrylate is less than 0.01% by weight, the effect of preventing the material separation and improving the water-proofing performance may be insufficient. If the content of the sodium polyacrylate exceeds 10% by weight, viscosity increases, The strength expression is lowered.
상기 성능 개선 결합재는 강도 및 내마모성을 얻기 위해 히드록시탄산마그네슘을 더 포함할 수 있다. 상기 히드록시탄산마그네슘은 상기 성능 개선 결합재에 대하여 0.01∼10중량% 함유되는 것이 바람직하다. 상기 히드록시탄산마그네슘의 함량이 0.01중량% 미만이면 강도 및 내마모성 개선 효과가 미흡하고, 상기 히드록시탄산마그네슘은 함량이 10중량%를 초과하면 성능은 개선되나 가격경쟁력이 저하된다. The performance improving binder may further contain magnesium hydroxycarbonate to obtain strength and abrasion resistance. The magnesium hydroxycarbonate is preferably contained in an amount of 0.01 to 10% by weight based on the performance improving binder. If the content of the magnesium hydroxycarbonate is less than 0.01% by weight, the effect of improving the strength and abrasion resistance is insufficient. If the content of the magnesium hydroxycarbonate exceeds 10% by weight, the performance is improved but the price competitiveness is lowered.
상기 성능 개선 결합재는 지연제를 더 포함할 수 있다. 상기 지연제는 일정 시간 동안 작업성을 확보하고 급격하게 경화되는 것을 지연하기 위하여 사용될 수 있다. 상기 지연제는 상기 성능 개선 결합재에 대하여 0.01∼5중량% 함유되는 것이 바람직하다. 상기 지연제로는 일반적으로 잘 알려진 물질을 사용할 수 있는데, 예컨대 포도당, 글루코오스, 텍스트린, 덱스트란과 같은 당류, 글루콘산, 사과산, 구연산, 시트릭산(citric acid)과 같은 산류 또는 그의 염, 아미노카복실산 또는 그의 염, 포스폰산 또는 그의 유도체, 글리세린과 같은 다가알코올 등을 사용할 수 있다. The performance enhancing binder may further comprise a retarding agent. The retarder can be used to ensure workability for a certain period of time and to delay rapid curing. The retarder is preferably contained in an amount of 0.01 to 5% by weight based on the performance improving binder. As the delaying agent, generally well known substances can be used. Examples thereof include saccharides such as glucose, glucose, texturin and dextran, acids or salts thereof such as gluconic acid, malic acid, citric acid and citric acid, Or a salt thereof, a phosphonic acid or a derivative thereof, and a polyhydric alcohol such as glycerin.
본 발명의 바람직한 실시예에 따른 내구성이 개선된 성능 개선 초속경 시멘트 콘크리트 조성물은 성능 개선 결합재 3∼40중량%, 잔골재 5∼70중량% 및 굵은골재 5∼65중량%를 강제 믹서에서 교반시킨 후, 물 0.1∼30중량%를 더 혼합하여 소정시간(예컨대, 1∼10분) 동안 교반하여 제조할 수 있다. The cement concrete composition having improved durability according to a preferred embodiment of the present invention is prepared by mixing 3 to 40% by weight of performance improving binder, 5 to 70% by weight of fine aggregate and 5 to 65% by weight of coarse aggregate in a forced mixer And 0.1 to 30% by weight of water, and stirring the mixture for a predetermined time (for example, 1 to 10 minutes).
이하에서, 본 발명의 바람직한 실시예에 따른 도로 포장 보수 공법을 설명한다. Hereinafter, a road pavement maintenance method according to a preferred embodiment of the present invention will be described.
본 발명의 바람직한 실시예에 따른 성능 개선 초속경 시멘트 콘크리트 조성물을 이용한 도로 포장 보수 공법은, 콘크리트 구조물의 열화된 부위 및 아스팔트 콘크리트를 노면 파쇄기를 이용하여 제거하는 단계와, 제거된 부위를 워터젯, 고압세척기, 핸드 워터젯 등으로 열화된 부위까지 제거한 후 진공흡입차량으로 청소하는 단계와, 상기 성능 개선 초속경 시멘트 콘크리트 조성물이 구체 콘크리트에 부착되기 용이하게 하고 표층강화, 유해물질, 물, 염소이온 등의 침투를 억제하고 내수성을 개선하기 위하여 상기 청소된 부위에 프라이머 또는 블루밍 처리를 하는 단계와, 상기 프라이머 또는 블루밍이 처리 된 상부에 상기 성능 개선 초속경 시멘트 콘크리트 조성물을 타설하여 열화된 부위의 단면을 보수 또는 보강하는 단계와, 타설된 상기 성능 개선 초속경 시멘트 콘크리트 조성물 표면의 미끄럼 저항성을 개선시키기 위하여 종·횡방향의 타이닝을 실시하는 단계; 및 상기 타이닝된 상기 성능 개선 초속경 시멘트 콘크리트 조성물 상부에 수분 증발을 방지하여 소성균열을 억제하기 위하여 피막 양생제를 도포하는 단계를 포함한다. The method of repairing road pavement using a performance improvement quick-setting cement concrete composition according to a preferred embodiment of the present invention includes the steps of removing a deteriorated portion of a concrete structure and an asphalt concrete using a road surface crusher, A step of removing a portion deteriorated by a washing machine, a hand water jet, etc., and then cleaning the cement with a vacuum suction vehicle; The present invention relates to a cement mortar composition comprising a primer or a blooming treated premixed cement concrete composition, wherein the premixed or blooming treated premixed cementitious cement concrete composition is applied to the top of the primed or blooming treated area to suppress penetration and improve water resistance, Or reinforcing the pushed performance; Step for applying the other of the longitudinal and lateral directions innings per second to improve the light resistance of the cement sliding surface of the concrete composition; And applying a coating curing agent to prevent evaporation of moisture on the surface of the tempered rapid curing cement concrete composition to prevent plastic cracking.
상기 열화 부위는 철근 하부까지 제거하고, 노출된 철근의 녹을 제거하는 단계를 더 포함할 수 있다. 상기 파쇄기 및 워터젯을 이용하여 치핑하는 경우에 정상적인 경우에는 콘크리트 구조물의 철근이 노출되지 않지만 열화가 심한 경우에는 열화된 부위에서 철근이 노출될 수도 있는데, 이렇게 철근이 노출되는 경우에는 방청 처리하여야 하나 본 발명에 의하면, 별도의 철근 방청 처리는 하지 않아도 된다. The deteriorated portion may be removed to the lower portion of the reinforcing bar and the rust of the exposed reinforcing bar may be removed. In the case of chipping using the crusher and the water jet, in the normal case, the reinforcing bars of the concrete structure are not exposed. However, when the deterioration is severe, the reinforcing bars may be exposed at the deteriorated portions. According to the invention, a separate rebar anti-rust treatment is not required.
이하에서, 본 발명에 따른 성능 개선 초속경 시멘트 콘크리트 조성물의 실시예들을 더욱 구체적으로 제시하며, 다음에 제시하는 실시예들에 의하여 본 발명이 한정되는 것은 아니다. Hereinafter, embodiments of the performance improving quick-release cement concrete composition according to the present invention will be more specifically shown and the present invention is not limited by the following embodiments.
<실시예 1>≪ Example 1 >
성능 개선 결합재 17중량%, 잔골재 42중량%, 굵은 골재 34중량%를 강제식 믹서에 투입하여 교반한 후, 물 7중량%를 더 혼합하여 다시 2분간 교반하여 성능 개선 초속경 시멘트 콘크리트 조성물을 제조하였다. Performance Improvement 17% by weight of binder, 42% by weight of fine aggregate and 34% by weight of coarse aggregate were added to a forced mixer and stirred. Then, 7% by weight of water was further mixed and stirred again for 2 minutes to prepare a quick-setting cement concrete composition Respectively.
이때, 성능 개선 결합재는 조강 포틀랜드 시멘트 35중량%, 칼슘 또는 마그네슘 설포알루미네이트 20중량%, 알루미나 시멘트 10중량%, 견운모 10중량%, 고로슬래그 분말 10중량%, 석고 5중량%, 몬모릴로나이트 1중량%, 크로뮴산염 1중량%, 리튬카보네이트 1중량%, 황산마그네슘 1중량%, 에틸렌-초산비닐 공중합체 1중량%, 스티렌-초산비닐 공중합체 1중량%, 소포제 1중량%, 감수제 1중량%, 알긴산 0.5중량%, 폴리아크릴산나트륨 0.5중량%, 히드록시탄산마그네슘 0.5중량% 및 지연제 0.5중량%를 혼합하여 사용하였다. 이때, 상기 소포제는 실리콘계 소포제를, 상기 감수제는 폴리칼본산계 감수제를, 상기 지연제는 구연산계 지연제를 사용하였다. At this time, the performance improving binder was a mixture of 35 wt% crude steel portland cement, 20 wt% calcium or magnesium sulfoaluminate, 10 wt% alumina cement, 10 wt% sericite, 10 wt% blast furnace slag powder, 5 wt% gypsum, 1 wt% montmorillonite, 1 weight% of chromate, 1 weight% of lithium carbonate, 1 weight% of magnesium sulfate, 1 weight% of ethylene-vinyl acetate copolymer, 1 weight% of styrene-vinyl acetate copolymer, 1 weight% of defoamer, 1 weight% of water reducing agent, 0.5% by weight of sodium polyacrylate, 0.5% by weight of sodium polyacrylate, 0.5% by weight of magnesium hydroxycarbonate and 0.5% by weight of retarder. At this time, the antifoaming agent was a silicone antifoaming agent, the water reducing agent was a polycarboxylic acid type water reducing agent, and the retarding agent was a citric acid type retarding agent.
<실시예 2>≪ Example 2 >
성능 개선 결합재 17중량%, 잔골재 42중량%, 굵은 골재 34중량%를 강제식 믹서에 투입하여 교반한 후, 물 7중량%를 더 혼합하여 다시 2분간 교반하여 성능 개선 초속경 시멘트 콘크리트 조성물을 제조하였다. Performance Improvement 17% by weight of binder, 42% by weight of fine aggregate and 34% by weight of coarse aggregate were added to a forced mixer and stirred. Then, 7% by weight of water was further mixed and stirred again for 2 minutes to prepare a quick-setting cement concrete composition Respectively.
이때, 성능 개선 결합재는 조강 포틀랜드 시멘트 33중량%, 칼슘 또는 마그네슘 설포알루미네이트 20중량%, 알루미나 시멘트 10중량%, 견운모 10중량%, 고로슬래그 분말 10중량%, 석고 5중량%, 몬모릴로나이트 1중량%, 크로뮴산염 1중량%, 리튬카보네이트 1중량%, 황산마그네슘 1중량%, 에틸렌-초산비닐 공중합체 2중량%, 스티렌-초산비닐 공중합체 2중량%, 소포제 1중량%, 감수제 1중량%, 알긴산 0.5중량%, 폴리아크릴산나트륨 0.5중량%, 히드록시탄산마그네슘 0.5중량% 및 지연제 0.5중량%를 혼합하여 사용하였다. 이때, 상기 소포제는 실리콘계 소포제를, 상기 감수제는 폴리칼본산계 감수제를, 상기 지연제는 구연산계 지연제를 사용하였다. At this time, the performance improving binder was composed of 33 wt% of crude steel portland cement, 20 wt% of calcium or magnesium sulfoaluminate, 10 wt% of alumina cement, 10 wt% of sericite, 10 wt% of blast furnace slag powder, 5 wt% of gypsum, 1 wt% of montmorillonite, 1 weight% of chromium chloride, 1 weight% of lithium carbonate, 1 weight% of magnesium sulfate, 2 weight% of ethylene-vinyl acetate copolymer, 2 weight% of styrene-vinyl acetate copolymer, 1 weight% of defoamer, 0.5% by weight of sodium polyacrylate, 0.5% by weight of sodium polyacrylate, 0.5% by weight of magnesium hydroxycarbonate and 0.5% by weight of retarder. At this time, the antifoaming agent was a silicone antifoaming agent, the water reducing agent was a polycarboxylic acid type water reducing agent, and the retarding agent was a citric acid type retarding agent.
<실시예 3>≪ Example 3 >
성능 개선 결합재 17중량%, 잔골재 42중량%, 굵은 골재 34중량%를 강제식 믹서에 투입하여 교반한 후, 물 7중량%를 더 혼합하여 다시 2분간 교반하여 성능 개선 초속경 시멘트 콘크리트 조성물을 제조하였다. Performance Improvement 17% by weight of binder, 42% by weight of fine aggregate and 34% by weight of coarse aggregate were added to a forced mixer and stirred. Then, 7% by weight of water was further mixed and stirred again for 2 minutes to prepare a quick-setting cement concrete composition Respectively.
이때, 성능 개선 결합재는 조강 포틀랜드 시멘트 31중량%, 칼슘 또는 마그네슘 설포알루미네이트 20중량%, 알루미나 시멘트 10중량%, 견운모 10중량%, 고로슬래그 분말 10중량%, 석고 5중량%, 몬모릴로나이트 1중량%, 크로뮴산염 1중량%, 리튬카보네이트 1중량%, 황산마그네슘 1중량%, 에틸렌-초산비닐 공중합체 3중량%, 스티렌-초산비닐 공중합체 3중량%, 소포제 1중량%, 감수제 1중량%, 알긴산 0.5중량%, 폴리아크릴산나트륨 0.5중량%, 히드록시탄산마그네슘 0.5중량% 및 지연제 0.5중량%를 혼합하여 사용하였다. 이때, 상기 소포제는 실리콘계 소포제를, 상기 감수제는 폴리칼본산계 감수제를, 상기 지연제는 구연산계 지연제를 사용하였다. The performance improving binder was composed of 31 wt% crude steel portland cement, 20 wt% calcium or magnesium sulfoaluminate, 10 wt% alumina cement, 10 wt% sericite, 10 wt% blast furnace slag powder, 5 wt% gypsum, 1 wt% montmorillonite, , 1% by weight of chromium chloride, 1% by weight of lithium carbonate, 1% by weight of magnesium sulfate, 3% by weight of ethylene-vinyl acetate copolymer, 3% by weight of styrene-vinyl acetate copolymer, 1% by weight of defoamer, 0.5% by weight of sodium polyacrylate, 0.5% by weight of sodium polyacrylate, 0.5% by weight of magnesium hydroxycarbonate and 0.5% by weight of retarder. At this time, the antifoaming agent was a silicone antifoaming agent, the water reducing agent was a polycarboxylic acid type water reducing agent, and the retarding agent was a citric acid type retarding agent.
상기의 실시예 1 내지 실시예 3의 특성을 보다 용이하게 파악할 수 있도록 본 발명의 실시예들과 비교할 수 있는 비교예들을 제시하며, 후술할 비교예 1은 현재 일반적으로 시멘트 콘크리트 조성물을 제시한 것이다. Comparative examples that can be compared with the embodiments of the present invention are shown in order to more easily grasp the characteristics of the first to third embodiments, and Comparative Example 1 to be described later presents a cement concrete composition generally at present .
<비교예 1>≪ Comparative Example 1 &
조강 포틀랜드 시멘트 17중량%, 잔골재 42중량% 및 굵은 골재 34중량%를 강제식 믹서에 투입하여 교반한 후, 물 7중량%를 더 혼합하여 다시 2분간 교반하여 시멘트 콘크리트 조성물을 제조하였다.17% by weight of crude steel Portland cement, 42% by weight of fine aggregate and 34% by weight of coarse aggregate were put into a forced mixer and stirred. Then, 7% by weight of water was further mixed and stirred for 2 minutes to prepare a cement concrete composition.
하기 시험예들은 본 발명에 따른 실시예 1 내지 실시예 3의 특성을 보다 용이하게 파악할 수 있도록 본 발명에 따른 실시예들과 비교예 1의 특성을 비교한 실험결과들을 나타낸 것이다.The following test examples show experimental results comparing characteristics of the embodiment of the present invention and the characteristics of the comparative example 1 in order to more easily grasp the characteristics of the embodiments 1 to 3 according to the present invention.
<시험예 1>≪ Test Example 1 >
실시예 1 내지 실시예 3에 따라 제조된 성능 개선 초속경 시멘트 콘크리트 조성물과 비교예 1 따라 제조된 시멘트 콘크리트 조성물을 KS F 2402에 규정한 방법에 따라 슬럼프시험(반죽의 정도)을 한 결과를 나타낸 것이다. 슬럼프시험은 콘크리트의 연도 및 점조성 등과 같은 반죽의 질기를 시험하는 것으로, 수치가 클수록 워커빌리티(Workability) 즉, 콘크리트의 타설시 작업성이 우수하다는 것을 의미한다.The results of the slump test (degree of kneading) of the performance improvement quick-setting cement concrete composition prepared according to Examples 1 to 3 and the cement concrete composition prepared according to Comparative Example 1 were determined according to the method specified in KS F 2402 will be. The slump test is to test the quality of the dough such as the flue and viscosity of the concrete. The larger the value, the better the workability in putting the concrete.
하기 표 1은 시간 경과에 따른 슬럼프의 변화이다.Table 1 below shows the change in slump over time.
상기 표 1에서와 같이, 실시예 1 내지 실시예 3에 따라 제조된 성능 개선 초속경 시멘트 콘크리트 조성물이 비교예 1에 따라 제조된 폴리머 시멘트 콘크리트 조성물에 비하여 작업성이 우수하며 특히, 실시예 3에 따라 제조된 성능 개선 초속경 시멘트 콘크리트 조성물은 시간이 경과하여도 슬럼프의 변화가 크지 않아 작업성이 매우 우수하다.As shown in Table 1, the performance improving quick-release cement concrete composition prepared according to Examples 1 to 3 is superior in workability to the polymer cement concrete composition prepared according to Comparative Example 1, The performance improving ultra rapid cement concrete composition thus produced has excellent workability because the change in slump is not large even after a lapse of time.
<시험예 2>≪ Test Example 2 &
실시예 1 내지 실시예 3에 따라 제조된 성능 개선 초속경 시멘트 콘크리트 조성물과 비교예 1에 따라 제조된 시멘트 콘크리트 조성물을 KS F 2405에 규정한 방법에 따라 압축강도시험을 한 결과를 나타낸 것이다.The results are shown in Table 1. The results are shown in Table 1. The results are shown in Table 1. The results are shown in Table 1. The results are shown in Tables 1 and 2.
하기 표 2는 시간 경과에 따른 압축강도의 변화이다.Table 2 below shows changes in compressive strength with time.
division
상기 표 2에서와 같이, 실시예 1 내지 실시예 3에 따라 제조된 성능 개선 초속경 시멘트 콘크리트 조성물은 시공 후, 4시간이 경과하면 경화되기 때문에 타설된 콘크리트에서 다른 작업을 수행할 수 있었다. 또한, 완전히 경화된 후에도 실시예 1 내지 실시예 3에 따라 제조된 성능 개선 초속경 시멘트 콘크리트 조성물이 비교예 1에 따라 제조된 시멘트 콘크리트 조성물에 비하여 압축강도가 높았다.As shown in Table 2, the performance improving quick-release cement concrete composition prepared according to Examples 1 to 3 was cured after 4 hours of application, so that the concrete poured in the concrete could perform other operations. Also, after fully cured, the performance improving quick-setting cement concrete composition prepared according to Examples 1 to 3 had higher compressive strength than the cement concrete composition prepared according to Comparative Example 1. [
<시험예 3>≪ Test Example 3 >
실시예 1 내지 실시예 3에 따라 제조된 성능 개선 초속경 시멘트 콘크리트 조성물과 비교예 1에 따라 제조된 시멘트 콘크리트 조성물을 KS F 2408에 규정한 방법에 따라 휨강도를 측정한 결과를 나타낸 것이다.The results of measuring the flexural strength according to the method defined in KS F 2408 for the cement concrete composition prepared according to Comparative Example 1 and the performance improving quick-release cement concrete composition prepared according to Examples 1 to 3 are shown.
하기 표 3은 시간 경과에 따른 휨강도의 변화이다.Table 3 below shows the change in flexural strength with time.
division
상기 표 3에서와 같이, 실시예 1 내지 실시예 3에 따라 제조된 성능 개선 초속경 시멘트 콘크리트 조성물은 시공 후, 4시간이 경과하면 경화되어 외부의 하중에 대한 저항력이 발생되어 콘크리트의 변형이 발생되지 않았다. 또한, 콘크리트가 완전히 경화되는 28일 후에는 실시예 1 내지 실시예 3에 따라 제조된 성능 개선 초속경 시멘트 콘크리트 조성물이 비교예 1에 따라 제조된 시멘트 콘크리트 조성물에 비하여 휨강도가 월등히 높았다.As shown in Table 3, the performance improving quick-setting cement concrete composition prepared according to Examples 1 to 3 hardened after 4 hours of application, causing resistance to external load, causing deformation of concrete It was not. Also, after 28 days after the concrete was fully cured, the performance improvement quick-setting cement concrete composition prepared according to Examples 1 to 3 had significantly higher bending strength than the cement concrete composition prepared according to Comparative Example 1. [
<시험예 4><Test Example 4>
상기 실시예 1 내지 실시예 3에 따라 제조된 성능 개선 초속경 시멘트 콘크리트 조성물과 비교예 1에 따라 제조된 시멘트 콘크리트 조성물을 KS F 2762에 규정한 방법에 따라 접착강도를 측정하였고, 그 결과를 표 4에 나타내었다.The adhesive strength of the cementitious cement concrete composition prepared according to Examples 1 to 3 and the cement concrete composition prepared according to Comparative Example 1 was measured according to the method specified in KS F 2762, Respectively.
division
상기 표 4에서와 같이, 실시예 1 내지 실시예 3에 따라 제조된 성능 개선 초속경 시멘트 콘크리트 조성물은 비교예 1에 따라 제조된 시멘트 콘크리트 조성물에 비하여 접착강도가 월등히 높았다.As shown in Table 4, the performance improving quick-setting cement concrete composition prepared according to Examples 1 to 3 had significantly higher bonding strength than the cement concrete composition prepared according to Comparative Example 1. [
<시험예 5>≪ Test Example 5 >
실시예 1 내지 실시예 3에 따라 제조된 성능 개선 초속경 시멘트 콘크리트 조성물과 비교예 1에 따라 제조된 폴리머 시멘트 콘크리트 조성물을 KS F 2424(콘크리트의 길이 변화 시험방법)에 의하여 길이변화율을 측정하였으며, 그 결과를 하기 표 5에 나타내었다.The rate of change in length was measured by the performance improvement quick-setting cement concrete composition prepared according to Examples 1 to 3 and the polymer cement concrete composition prepared according to Comparative Example 1 by KS F 2424 (length change test method of concrete) The results are shown in Table 5 below.
상기 표 5에서와 같이, 실시예 1 내지 실시예 3에 따라 제조된 성능 개선 초속경 시멘트 콘크리트 조성물이 비교예 1에 따라 제조된 시멘트 콘크리트 조성물에 비하여 길이변화율이 감소되어 수축 저감 효과가 있음을 확인할 수 있었다.As shown in Table 5, it was confirmed that the performance improvement quick-setting cement concrete composition prepared according to Examples 1 to 3 had shrinkage reduction effect by decreasing the rate of change in length as compared with the cement concrete composition prepared according to Comparative Example 1 I could.
<시험예 6> ≪ Test Example 6 >
실시예 1 내지 실시예 3에 따라 제조된 성능 개선 초속경 시멘트 콘크리트 조성물과 비교예 1에 따라 제조된 시멘트 콘크리트 조성물을 KS F 4042에 의하여 중성화 저항성 시험을 수행하였고, 그 결과를 하기 표 6에 나타내었다.The cement concrete compositions prepared according to Comparative Example 1 and the performance improvement quick-setting cement concrete compositions prepared according to Examples 1 to 3 were tested for resistance to neutralization by KS F 4042 and the results are shown in Table 6 below .
상기 표 6에서와 같이, 실시예 1 내지 실시예 3에 따라 제조된 성능 개선 초속경 시멘트 콘크리트 조성물이 비교예 1에 따라 제조된 시멘트 콘크리트 조성물에 비하여 중성화 깊이가 적게 나타나 중성화에 대한 저항성이 높음을 확인할 수 있었다. As shown in Table 6, the performance-improving quick-setting cement concrete composition prepared according to Examples 1 to 3 has a higher neutralization resistance than the cement concrete composition prepared according to Comparative Example 1, I could confirm.
<시험예 7> ≪ Test Example 7 >
실시예 1 내지 실시예 3에 따라 제조된 성능 개선 초속경 시멘트 콘크리트 조성물과 비교예 1에 따라 제조된 시멘트 콘크리트 조성물을 KS F 2711에 의하여 염분침투저항성 시험을 수행하였고, 그 결과를 하기 표 7에 나타내었다. The performance improvement quick-setting cement concrete composition prepared according to Examples 1 to 3 and the cement concrete composition prepared according to Comparative Example 1 were tested for their salt penetration resistance by KS F 2711 and the results are shown in Table 7 Respectively.
상기 표 7에서와 같이, 실시예 1 내지 실시예 3에 따라 제조된 성능 개선 초속경 시멘트 콘크리트 조성물이 비교예 1에 따라 제조된 시멘트 콘크리트 조성물에 비하여 염분 침투에 대한 저항성이 높음을 확인할 수 있었다. As shown in Table 7, it was confirmed that the performance improving quick-setting cement concrete composition prepared according to Examples 1 to 3 has higher resistance to salt infiltration than the cement concrete composition prepared according to Comparative Example 1. [
<시험예 8><Test Example 8>
실시예 1 내지 실시예 3에 따라 제조된 성능 개선 초속경 시멘트 콘크리트 조성물과 비교예 1에 따라 제조된 시멘트 콘크리트 조성물을 KS F 2456에 규정한 방법에 따라 동결융해저항성 시험을 실시하였고, 그 결과를 하기 표 8에 나타내었다. The cement concrete compositions prepared according to Examples 1 to 3 and the cementitious concrete compositions prepared according to Comparative Example 1 were subjected to a freezing and thawing resistance test according to the method defined in KS F 2456, Are shown in Table 8 below.
상기 표 8에서와 같이, 실시예 1 내지 실시예 3에 따라 제조된 성능 개선 초속경 시멘트 콘크리트 조성물이 비교예 1에 따라 제조된 시멘트 콘크리트 조성물에 비하여 동결융해저항성이 우수함을 알 수 있었다.As shown in Table 8, it was found that the performance improving quick-release cement concrete composition prepared according to Examples 1 to 3 had better freeze-thaw resistance than the cement concrete composition prepared according to Comparative Example 1. [
<시험예 9>≪ Test Example 9 >
실시예 1 내지 실시예 3에 따라 제조된 성능 개선 초속경 시멘트 콘크리트 조성물과 비교예 1에 따라 제조된 폴리머 시멘트 콘크리트 조성물을 ASTM C 779에 규정한 방법에 따라 마모저항성 시험을 실시하였고, 그 결과를 하기 표 9에 나타내었다. The abrasion resistance test was performed according to the method described in ASTM C 779 for the performance-improving quick-release cement concrete composition prepared according to Examples 1 to 3 and the polymer cement concrete composition prepared according to Comparative Example 1. As a result, Are shown in Table 9 below.
상기 표 9에서와 같이, 실시예 1 내지 실시예 3에 따라 제조된 성능 개선 초속경 시멘트 콘크리트 조성물이 비교예 1에 따라 제조된 시멘트 콘크리트 조성물에 비하여 마모저항성이 우수함을 알 수 있었다.As shown in Table 9, it was found that the performance improvement quick-setting cement concrete composition prepared according to Examples 1 to 3 is superior in abrasion resistance to the cement concrete composition prepared according to Comparative Example 1.
<시험예 10>≪ Test Example 10 &
실시예 1 내지 실시예 3에 따라 제조된 수축저감형 속경성 시멘트 콘크리트 조성물과 비교예 1에 따라 제조된 시멘트 콘크리트 조성물을 일본 공업 규격 원안 [콘크리트의 용액침적에 의한 내약품성 시험 방법]에 준하여 2% 염산, 5% 황산 및 45% 수산화 나트륨의 수용액을 시험 용액으로 28일 공시체를 침적하여 내약품성 시험의 측정결과를 아래의 표 10에 나타내었다. The shrinkage-reduction type quick-setting cement concrete composition prepared according to Examples 1 to 3 and the cement concrete composition prepared according to Comparative Example 1 were tested according to the Japanese Industrial Standards (hereinafter referred to as the " Test Method for Chemical Resistance by Solution Deposition of Concrete " % Of hydrochloric acid, 5% sulfuric acid and 45% sodium hydroxide was immersed in the test solution for 28 days. The results of the chemical resistance test are shown in Table 10 below.
(%)Weight change rate
(%)
위의 표 10에서와 같이, 실시예 1 내지 실시예 3에 따라 제조된 수축저감형 속경성 시멘트 콘크리트 조성물이 비교예 1에 따라 제조된 시멘트 콘크리트 조성물에 비하여 내약품성에 대한 중량변화율이 적게 나타나 내약품성에 대한 저항성이 높음을 확인할 수 있었다. As shown in Table 10, the shrinkage reduction type quick-setting cement concrete composition produced according to Examples 1 to 3 exhibited less weight change rate with respect to chemical resistance than the cement concrete composition prepared according to Comparative Example 1 And it was confirmed that they are highly resistant to chemicals.
<시험예 11> ≪ Test Example 11 &
실시예 1 내지 실시예 3에 따라 제조된 수축저감형 속경성 시멘트 콘크리트 조성물과 비교예 1에 따라 제조된 폴리머 시멘트 콘크리트 조성물의 특성을 비교하기 위하여, KS F 2561 (철근 콘크리트용 방청제)에 의하여 방청률시험을 수행하여 그 결과를 하기 표 11에 나타내었다. In order to compare the properties of the shrinkage-reducing type quick-setting cement concrete composition prepared according to Examples 1 to 3 and the polymer cement concrete composition prepared according to Comparative Example 1, The results are shown in Table 11 below.
위의 표 11에서와 같이, 실시예 1 내지 실시예 3에 따라 제조된 성능 개선 초속경 시멘트 콘크리트 조성물이 비교예 1에 따라 제조된 시멘트 콘크리트 조성물에 비하여 방청률이 적게 나타나 방청효과가 높음을 확인할 수 있었다. As shown in Table 11, the cement concrete compositions according to Examples 1 to 3 exhibited less anti-rusting effect than the cement concrete compositions prepared according to Comparative Example 1, I could.
이상, 본 발명의 바람직한 실시예를 들어 상세하게 설명하였으나, 본 발명은 상기 실시예에 한정되는 것은 아니며, 본 발명의 기술적 사상의 범위 내에서 당 분야에서 통상의 지식을 가진 자에 의하여 여러 가지 변형이 가능하다.While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, This is possible.
Claims (6)
성능 개선 결합재 3∼40중량%, 잔골재 5∼70중량%, 굵은골재 5∼65중량% 및 물 0.1∼30 중량%를 포함하며,
상기 성능 개선 결합재는 조강 포틀랜드 시멘트 10∼70중량%, 칼슘 또는 마그네슘 설포알루미네이트 3∼40중량%, 알루미나 시멘트 0.1∼30중량%, 견운모 0.1∼30중량%, 분말도가 4,500∼8,500㎠/g인 고로슬래그 분말 0.1∼30중량%, 석고 0.1∼20중량%, 몬모릴로나이트 0.01~20중량%, 크로뮴산염 0.01∼10중량%, 리튬카보네이트 0.01~10 중량%, 황산마그네슘 0.01∼10중량%, 에틸렌-초산비닐 공중합체 0.01~10중량%, 스티렌-초산비닐 공중합체 0.01~10중량%, 소포제 0.01~5중량%, 감수제 0.01~5중량%, 알긴산 0.01∼10중량%, 재료분리방지 및 내수성을 개선하기 위하여 폴리아크릴산나트륨 0.01∼10중량%, 히드록시탄산마그네슘 0.01∼10중량%, 및 지연제 0.01∼5중량%를 포함하고,
KS F 2402에 규정한 방법에 따라 슬럼프시험(반죽의 정도)을 시간 경과에 따라 산출한 결과, 슬럼프(cm)가 교반 직후 20, 20분 경과후 19, 40분 경과후 14.0을 나타내는
것을 특징으로 하는 성능 개선 초속경 시멘트 콘크리트 조성물.
A cementitious cement composition,
3 to 40% by weight of a performance improving binder, 5 to 70% by weight of a fine aggregate, 5 to 65% by weight of a coarse aggregate and 0.1 to 30%
Wherein the performance improving binder comprises 10 to 70% by weight of crude steel Portland cement, 3 to 40% by weight of calcium or magnesium sulfoaluminate, 0.1 to 30% by weight of alumina cement, 0.1 to 30% by weight of sericite and a powder degree of 4,500 to 8,500 cm & 0.01 to 10 wt% of chromium oxide, 0.01 to 10 wt% of lithium carbonate, 0.01 to 10 wt% of magnesium sulfate, 0.01 to 10 wt% of calcium carbonate, 0.01 to 10% by weight of styrene-vinyl acetate copolymer, 0.01 to 5% by weight of a defoaming agent, 0.01 to 5% by weight of a water reducing agent and 0.01 to 10% by weight of alginic acid. 0.01 to 10% by weight of sodium polyacrylate, 0.01 to 10% by weight of magnesium hydroxycarbonate, and 0.01 to 5% by weight of retarder,
The slump test (degree of kneading) was calculated over time according to the method specified in KS F 2402, and the slump (cm) was found at 20 minutes after stirring, 19 minutes after 20 minutes, and 14.0 minutes after 40 minutes
Wherein said cementitious cementitious composition is a cementitious cementitious material.
콘크리트 구조물의 열화된 부위 및 아스팔트 콘크리트를 노면 파쇄기를 이용하여 제거하고 청소하는 단계;
상기 성능 개선 초속경 시멘트 콘크리트 조성물이 구체 콘크리트에 부착되기 용이하게 하고 표층강화, 유해물질, 물, 염소이온 등의 침투를 억제하고 내수성을 개선하기 위하여 상기 청소된 부위에 프라이머 또는 블루밍 처리를 하는 단계;
상기 프라이머 또는 블루밍이 처리 된 상부에 상기 성능 개선 초속경 시멘트 콘크리트 조성물을 타설하여 열화된 부위의 단면을 보수 또는 보강하는 단계;
타설된 상기 성능 개선 초속경 시멘트 콘크리트 조성물 표면의 미끄럼 저항성을 개선시키기 위하여 종·횡방향의 타이닝을 실시하는 단계; 및
상기 타이닝된 상기 성능 개선 초속경 시멘트 콘크리트 조성물 상부에 수분 증발을 방지하여 소성균열을 억제하기 위하여 피막 양생제를 도포하는 단계를 포함하는 것을 특징으로 하는 성능 개선 초속경 시멘트 콘크리트 조성물을 이용한 도로 포장 보수 공법.A road pavement maintenance method using the performance improving quick-setting cement concrete composition according to claim 1,
Removing and cleaning the deteriorated portion of the concrete structure and the asphalt concrete using a road surface crusher;
A primer or blooming treatment is applied to the cleaned site to facilitate adhesion of the performance improving quick-release lightweight cement concrete composition to the concrete and to prevent penetration of the surface layer, penetration of toxic substances, water, chlorine ions, ;
Repairing or reinforcing a section of the deteriorated portion by placing the performance improving quick-release cement concrete composition on the primer or blooming treated upper portion;
A step of performing longitudinal and transverse tinning to improve the sliding resistance of the surface of the performance-improving ultralight cement concrete composition laid down; And
The method of claim 1, further comprising the step of applying a coating curing agent to prevent the evaporation of moisture on the upper surface of the tempered quick-setting cement concrete composition to prevent plastic cracking. Repair method.
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| KR101914735B1 (en) | 2018-04-18 | 2018-11-02 | (주)경룡 | Crack inhibition type cement concrete composition with excellent corrosion and wear resistance and maintenance method for road pavement therewith |
| CN108794062A (en) * | 2018-07-10 | 2018-11-13 | 武汉理工大学 | A kind of mucosal pattern curing compound and preparation method thereof |
| KR101956631B1 (en) * | 2018-07-16 | 2019-03-11 | 김종철 | Quick-hardening cement concrete composition for repairing road and road repairing method therewith |
| KR101952135B1 (en) * | 2018-04-18 | 2019-05-02 | (주)경룡 | Crack-Reducing Type Fast Curing Concrete Composition With Excellent Corrosion Resistance and Abrasion Resistance, And Method For Repairing And Rehabilitating Road Pavement Using The Composition |
| KR102183800B1 (en) * | 2020-05-19 | 2020-11-30 | 도경건설 주식회사 | A permeable concrete composition having high strength and durability for eco-friendly elastic pavement and eco-friendly method for elastic pavement |
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| KR102269178B1 (en) | 2020-12-05 | 2021-06-25 | 김태현 | Cememnt concrete composition and repairing method for road pavement therewith |
| KR102303652B1 (en) | 2021-02-15 | 2021-09-17 | 이선목 | Cememnt concrete composition and repairing method for road pavement therewith |
| KR102337113B1 (en) | 2021-04-08 | 2021-12-13 | 유한회사 주연건설 | Quick-hardening cement concrete composite having improved properties and repairing method of road pavement using the same |
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| KR101914735B1 (en) | 2018-04-18 | 2018-11-02 | (주)경룡 | Crack inhibition type cement concrete composition with excellent corrosion and wear resistance and maintenance method for road pavement therewith |
| KR101952135B1 (en) * | 2018-04-18 | 2019-05-02 | (주)경룡 | Crack-Reducing Type Fast Curing Concrete Composition With Excellent Corrosion Resistance and Abrasion Resistance, And Method For Repairing And Rehabilitating Road Pavement Using The Composition |
| CN108794062A (en) * | 2018-07-10 | 2018-11-13 | 武汉理工大学 | A kind of mucosal pattern curing compound and preparation method thereof |
| KR101956631B1 (en) * | 2018-07-16 | 2019-03-11 | 김종철 | Quick-hardening cement concrete composition for repairing road and road repairing method therewith |
| KR102183800B1 (en) * | 2020-05-19 | 2020-11-30 | 도경건설 주식회사 | A permeable concrete composition having high strength and durability for eco-friendly elastic pavement and eco-friendly method for elastic pavement |
| KR102269179B1 (en) | 2020-12-05 | 2021-06-25 | 김태현 | Cememnt concrete composition and repairing method for road pavement therewith |
| KR102269178B1 (en) | 2020-12-05 | 2021-06-25 | 김태현 | Cememnt concrete composition and repairing method for road pavement therewith |
| KR102303652B1 (en) | 2021-02-15 | 2021-09-17 | 이선목 | Cememnt concrete composition and repairing method for road pavement therewith |
| KR102337113B1 (en) | 2021-04-08 | 2021-12-13 | 유한회사 주연건설 | Quick-hardening cement concrete composite having improved properties and repairing method of road pavement using the same |
| KR102503097B1 (en) * | 2022-05-24 | 2023-02-24 | 이준호 | Cross-section restoration material with alginic acid and cross-section restoration method of concrete structure using the same |
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