WO2023132449A1 - 콘크리트 파손이 억제된 친환경 액상 제설제 - Google Patents
콘크리트 파손이 억제된 친환경 액상 제설제 Download PDFInfo
- Publication number
- WO2023132449A1 WO2023132449A1 PCT/KR2022/016925 KR2022016925W WO2023132449A1 WO 2023132449 A1 WO2023132449 A1 WO 2023132449A1 KR 2022016925 W KR2022016925 W KR 2022016925W WO 2023132449 A1 WO2023132449 A1 WO 2023132449A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- eco
- concrete
- friendly liquid
- suppressed
- chloride
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- 239000007788 liquid Substances 0.000 title claims abstract description 59
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 109
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims abstract description 41
- 239000002270 dispersing agent Substances 0.000 claims abstract description 29
- 239000000463 material Substances 0.000 claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 50
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 34
- 238000005260 corrosion Methods 0.000 claims description 29
- 238000004078 waterproofing Methods 0.000 claims description 29
- 230000007797 corrosion Effects 0.000 claims description 28
- 239000000203 mixture Substances 0.000 claims description 28
- 239000004094 surface-active agent Substances 0.000 claims description 28
- 239000000084 colloidal system Substances 0.000 claims description 21
- 230000001681 protective effect Effects 0.000 claims description 17
- 239000011780 sodium chloride Substances 0.000 claims description 17
- 239000003112 inhibitor Substances 0.000 claims description 14
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 10
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 10
- 235000019422 polyvinyl alcohol Nutrition 0.000 claims description 10
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims description 9
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 8
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims description 7
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 6
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 5
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 claims description 5
- 229910000077 silane Inorganic materials 0.000 claims description 5
- RGHNJXZEOKUKBD-SQOUGZDYSA-M D-gluconate Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C([O-])=O RGHNJXZEOKUKBD-SQOUGZDYSA-M 0.000 claims description 4
- 229940050410 gluconate Drugs 0.000 claims description 4
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims description 3
- 229920000084 Gum arabic Polymers 0.000 claims description 3
- 239000004354 Hydroxyethyl cellulose Substances 0.000 claims description 3
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 claims description 3
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 claims description 3
- 229920000388 Polyphosphate Polymers 0.000 claims description 3
- 241000978776 Senegalia senegal Species 0.000 claims description 3
- 239000000205 acacia gum Substances 0.000 claims description 3
- 235000010489 acacia gum Nutrition 0.000 claims description 3
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 3
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 3
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims description 3
- 229940105329 carboxymethylcellulose Drugs 0.000 claims description 3
- SUPCQIBBMFXVTL-UHFFFAOYSA-N ethyl 2-methylprop-2-enoate Chemical compound CCOC(=O)C(C)=C SUPCQIBBMFXVTL-UHFFFAOYSA-N 0.000 claims description 3
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 claims description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 3
- 239000004417 polycarbonate Substances 0.000 claims description 3
- 229920000515 polycarbonate Polymers 0.000 claims description 3
- 239000001205 polyphosphate Substances 0.000 claims description 3
- 235000011176 polyphosphates Nutrition 0.000 claims description 3
- 239000001103 potassium chloride Substances 0.000 claims description 3
- 235000011164 potassium chloride Nutrition 0.000 claims description 3
- 125000005625 siliconate group Chemical group 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 238000002844 melting Methods 0.000 abstract description 18
- 230000008014 freezing Effects 0.000 abstract description 15
- 238000007710 freezing Methods 0.000 abstract description 15
- 238000010257 thawing Methods 0.000 abstract description 10
- 230000000903 blocking effect Effects 0.000 abstract description 4
- 239000010426 asphalt Substances 0.000 abstract description 3
- 238000002296 dynamic light scattering Methods 0.000 description 20
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 17
- 230000000694 effects Effects 0.000 description 17
- 230000000149 penetrating effect Effects 0.000 description 17
- 230000008018 melting Effects 0.000 description 16
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 15
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 15
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 15
- 230000000052 comparative effect Effects 0.000 description 15
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 14
- 230000035699 permeability Effects 0.000 description 14
- 239000003921 oil Substances 0.000 description 13
- 229910000831 Steel Inorganic materials 0.000 description 11
- 239000010959 steel Substances 0.000 description 11
- -1 chlorine ions Chemical class 0.000 description 10
- 229920001223 polyethylene glycol Polymers 0.000 description 9
- 239000000654 additive Substances 0.000 description 8
- 229910052742 iron Inorganic materials 0.000 description 8
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 description 8
- 239000000460 chlorine Substances 0.000 description 7
- 235000011187 glycerol Nutrition 0.000 description 7
- 239000011148 porous material Substances 0.000 description 7
- 229910052801 chlorine Inorganic materials 0.000 description 6
- 239000002904 solvent Substances 0.000 description 6
- 239000002202 Polyethylene glycol Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 5
- 239000006185 dispersion Substances 0.000 description 5
- 229960004592 isopropanol Drugs 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000035515 penetration Effects 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- 230000000996 additive effect Effects 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 4
- 239000001110 calcium chloride Substances 0.000 description 4
- 229910001628 calcium chloride Inorganic materials 0.000 description 4
- 230000006866 deterioration Effects 0.000 description 4
- 238000004090 dissolution Methods 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- 230000000704 physical effect Effects 0.000 description 4
- 235000010288 sodium nitrite Nutrition 0.000 description 4
- AEQDJSLRWYMAQI-UHFFFAOYSA-N 2,3,9,10-tetramethoxy-6,8,13,13a-tetrahydro-5H-isoquinolino[2,1-b]isoquinoline Chemical compound C1CN2CC(C(=C(OC)C=C3)OC)=C3CC2C2=C1C=C(OC)C(OC)=C2 AEQDJSLRWYMAQI-UHFFFAOYSA-N 0.000 description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 3
- 241000196324 Embryophyta Species 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 239000008367 deionised water Substances 0.000 description 3
- 229910021641 deionized water Inorganic materials 0.000 description 3
- 230000002542 deteriorative effect Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- MSRJTTSHWYDFIU-UHFFFAOYSA-N octyltriethoxysilane Chemical compound CCCCCCCC[Si](OCC)(OCC)OCC MSRJTTSHWYDFIU-UHFFFAOYSA-N 0.000 description 3
- 229960003493 octyltriethoxysilane Drugs 0.000 description 3
- 229920001843 polymethylhydrosiloxane Polymers 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- 239000000176 sodium gluconate Substances 0.000 description 3
- 235000012207 sodium gluconate Nutrition 0.000 description 3
- 229940005574 sodium gluconate Drugs 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- JLDKGEDPBONMDR-UHFFFAOYSA-N calcium;dioxido(oxo)silane;hydrate Chemical compound O.[Ca+2].[O-][Si]([O-])=O JLDKGEDPBONMDR-UHFFFAOYSA-N 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000001747 exhibiting effect Effects 0.000 description 2
- 230000002209 hydrophobic effect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- FBAFATDZDUQKNH-UHFFFAOYSA-M iron chloride Chemical compound [Cl-].[Fe] FBAFATDZDUQKNH-UHFFFAOYSA-M 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000011041 water permeability test Methods 0.000 description 2
- 238000004383 yellowing Methods 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- AZFNGPAYDKGCRB-XCPIVNJJSA-M [(1s,2s)-2-amino-1,2-diphenylethyl]-(4-methylphenyl)sulfonylazanide;chlororuthenium(1+);1-methyl-4-propan-2-ylbenzene Chemical compound [Ru+]Cl.CC(C)C1=CC=C(C)C=C1.C1=CC(C)=CC=C1S(=O)(=O)[N-][C@@H](C=1C=CC=CC=1)[C@@H](N)C1=CC=CC=C1 AZFNGPAYDKGCRB-XCPIVNJJSA-M 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000007259 addition reaction Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 230000001804 emulsifying effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 235000019441 ethanol Nutrition 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- HMMGMWAXVFQUOA-UHFFFAOYSA-N octamethylcyclotetrasiloxane Chemical compound C[Si]1(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O1 HMMGMWAXVFQUOA-UHFFFAOYSA-N 0.000 description 1
- 230000002688 persistence Effects 0.000 description 1
- RAFRTSDUWORDLA-UHFFFAOYSA-N phenyl 3-chloropropanoate Chemical compound ClCCC(=O)OC1=CC=CC=C1 RAFRTSDUWORDLA-UHFFFAOYSA-N 0.000 description 1
- 239000002798 polar solvent Substances 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 235000010289 potassium nitrite Nutrition 0.000 description 1
- 239000004304 potassium nitrite Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- NHARPDSAXCBDDR-UHFFFAOYSA-N propyl 2-methylprop-2-enoate Chemical compound CCCOC(=O)C(C)=C NHARPDSAXCBDDR-UHFFFAOYSA-N 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/18—Materials not provided for elsewhere for application to surfaces to minimize adherence of ice, mist or water thereto; Thawing or antifreeze materials for application to surfaces
- C09K3/185—Thawing materials
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/18—Materials not provided for elsewhere for application to surfaces to minimize adherence of ice, mist or water thereto; Thawing or antifreeze materials for application to surfaces
Definitions
- the present invention relates to an eco-friendly liquid snow removal agent in which concrete damage is suppressed, and more particularly, by adding a penetrating waterproofing agent and a dispersant to a chloride-based liquid snow removal agent to freeze and thaw concrete while maintaining compressive strength and suppressing moisture permeability of concrete. It relates to an eco-friendly liquid snow remover that improves resistance.
- Chloride-based snow removers include calcium chloride (CaCl 2 ) and sodium chloride (NaCl) as main components. Chloride-based snow removers perform ice melting through a rapid dissolution reaction and exothermic reaction by deliquescence, and this melting function is maintained by lowering the freezing point due to ions. Chloride-based deicing agent has excellent ice melting performance and low price, so it occupies about 90% of the deicing agent market.
- chloride-based deicing agents commonly contain a large amount of chlorine ions (Cl - ), and thus have the property of corroding iron under vehicles or bridges, yellowing plants, and deteriorating concrete.
- the snow removal solution dissolved together with snow penetrates into the pores of the concrete, repeating freezing and thawing and accelerating concrete damage.
- eco-friendly snow removers that prevent damage to iron and concrete and have less impact on plants are encouraged, but eco-friendly snow removers are generally more expensive and have lower performance than conventional chloride-based snow removers.
- non-chloride-based snow removers among eco-friendly snow removers require acetate-based materials, so the price is very high, and the ice melting performance is very low at half the level of chloride-based snow removers.
- the most popularly used eco-friendly snow removal agent is a solid chloride-based snow removal agent mixed with a corrosion inhibitor.
- Solid eco-friendly snow removers have the effect of preventing corrosion on iron by corrosion inhibitors, but their usability deteriorates due to solidification during long-term storage. There are downsides.
- the solution generated after snow removal penetrates into the pores of the concrete and the problem of deterioration of the concrete has a limitation that it is difficult to solve.
- Korean Patent Registration No. 10-2141869 discloses a solid snow removal composition having strong persistence by collecting sodium chloride and calcium chloride in a carrier.
- the above document provides a relatively eco-friendly snow removal composition by reducing the amount of snow removal by increasing the durability of the snow removal agent, but it is difficult to respond immediately to heavy snow compared to liquid snow removal agents and does not prevent corrosion of road facilities such as concrete or steel structures. It has the fatal flaw of not being able to.
- the liquid eco-friendly snow remover is a form of dissolving chloride and corrosion inhibitor in water, and can be used immediately where immediate snow removal is required due to its high specific heat.
- the liquid eco-friendly snow remover since it can be stored in a dedicated tank, it does not require a separate snow removal warehouse and has little effect on temperature and humidity, making it easy to manage.
- Korean Patent Publication No. 10-2004-0065667 discloses a low-corrosive eco-friendly liquid snow removal composition that does not use a chloride-based material. Since chloride-based materials are not used, acetate-based materials are used as ice melting agents, but acetate-based materials are expensive compared to chloride-based materials and have very poor melting performance, making it difficult to commercialize them.
- the eco-friendly liquid snow removal agent in which the corrosion inhibitor is dissolved also prevents corrosion of iron, but has limitations in that it does not solve the problem of snow and snow removal solution penetrating into the pores of concrete and deteriorating the concrete.
- An object of the present invention is to provide an eco-friendly liquid snow removal agent in which concrete damage is suppressed.
- Another object of the present invention is to provide a method for producing the eco-friendly liquid snow removal agent.
- the present invention provides an eco-friendly liquid snow removal agent containing a chloride-based material, a penetrating waterproofing agent and a dispersant, in which concrete damage is suppressed.
- the chloride-based material may be at least one selected from calcium chloride (CaCl 2 ), sodium chloride (NaCl), potassium chloride (KCl), and magnesium chloride (MgCl 2 ).
- the permeable waterproofing agent may be at least one selected from silane, silicate, siliconate and siloxane.
- the dispersant may include a protective colloid and one or more surfactants selected from oil-in-water (O/W) and water-in-oil (W/O).
- the weight ratio of the protective colloid and the surfactant may be 1:1 to 1:10.
- the protective colloid may be selected from the group consisting of polyvinyl alcohol, gum arabic, hydroxyethyl cellulose and carboxy methyl cellulose.
- the content of the protective colloid may be 0.0001 to 5% by weight based on the total weight of the composition.
- the content of the surfactant may be 0.001 to 10% by weight based on the total weight of the composition.
- the weight ratio of the oil-in-water and water-in-oil surfactants may be 10:1 to 1:10.
- the snow removal agent may further include at least one corrosion inhibitor selected from gluconate, orthophosphate, polyphosphate and silicate.
- the snow removal agent may further include one or more admixtures selected from methyl methacrylate, ethyl methacrylate and polycarbonate.
- the DLS diameter of the snow remover may be 1,000 to 3,000 nm.
- the eco-friendly liquid snow removal agent in which concrete damage is suppressed according to the present invention includes a chloride-based material permeable waterproofing agent and a dispersant, so that when the snow removal agent is sprayed on the road, moisture penetrates into the concrete while maintaining physical properties such as compressive strength of the concrete itself. Deterioration of concrete due to freezing and thawing can be effectively prevented by forming a coating film capable of blocking it. Therefore, the eco-friendly liquid snow removal agent of the present invention can be usefully used for snow removal purposes such as bridges, ramps, highways, etc., where fast initial ice melting performance is required and damage to asphalt roads causes fatal damage.
- the present invention relates to an eco-friendly liquid snow removal agent that inhibits concrete damage.
- Deicing agents are divided into chloride and non-chloride types according to the constituent materials, and are classified into solid and liquid types according to the form.
- Chloride-based deicing agents use chloride-based substances containing chlorine ions, such as calcium chloride and sodium chloride. Chloride-based snow removal agents have deliquescent properties and cause a rapid dissolution reaction, and melt snow using the heat generated through the dissolution reaction. In addition, as the snow remover melts the snow, a freezing point depression occurs due to ionized ions, so that the snow remains melted.
- the liquid snow remover When divided according to the form, the liquid snow remover is easier to store for a long period of time than the solid snow remover, and the issue of solidification is significantly less. Furthermore, it is easy to use compared to solid materials, and shows excellent aspects in terms of economic efficiency, such as reducing the preparation time and reducing the number of workers and maintenance costs.
- the liquid snow remover has a fatal disadvantage that when it is sprayed on the road, it can penetrate into the concrete voids together with the melted snow or the liquid snow remover itself, and the moisture that has penetrated can deteriorate the concrete.
- the present invention provides an eco-friendly liquid snow removal agent that prevents concrete damage, including a chloride-based material, a penetrating waterproofing agent and a dispersing agent.
- the eco-friendly liquid snow removal agent of the present invention is intended to obtain the effect of improving the durability of concrete without deteriorating the concrete even when the snow removal agent is used in the concrete by grafting the permeable waterproofing agent, admixture, etc. used in the existing concrete to the snow removal agent.
- the liquid snow removal agent of the present invention can be prepared by dissolving the snow removal agent component including a chloride-based material, a permeable waterproofing agent, a dispersing agent and additional components in a solvent.
- the solvent is not particularly limited as long as it is a material that can be prepared in liquid form by dissolving the snow remover component, but polar solvents such as water, acetone, chloroform, and ethanol can be used, and the most stable because it does not smell and does not cause an addition reaction It is preferred to use deionized water.
- the amount of the solvent may be 50 to 90% by weight, preferably 60 to 80% by weight, based on the total weight of the composition.
- the snow removal agent of the present invention uses a chloride-based material as an ice melting agent.
- the chloride-based material may be used among chloride-based materials having deliquescent properties, and preferably, one or more of calcium chloride (CaCl 2 ), sodium chloride (NaCl), potassium chloride (KCl), and magnesium chloride (MgCl 2 ) may be used.
- calcium chloride which has excellent deliquescent properties and has the greatest freezing point depression, is most preferred.
- the chloride-based material may be included in an amount of 10 to 70% by weight, preferably 15 to 40% by weight, and more preferably 25 to 35% by weight, based on the total weight of the total composition.
- the chloride is contained in a small amount, the performance as a melting agent is insufficient, and when it is excessively contained, the density is increased and dispersion is difficult.
- An ice melting agent using such a chloride-based material contains a large amount of chlorine ions. Contained chlorine ions react with iron to form iron chloride to corrode iron structures.
- a corrosion inhibitor was added to the snow removal composition to suppress corrosion.
- gluconate As the corrosion inhibitor, gluconate, orthophosphate, polyphosphate, silicate, and the like may be used. In the present invention, it is preferable to use gluconate, and it is most preferable to use sodium gluconate, which is non-toxic and easily biodegradable.
- the corrosion inhibitor is preferably included in an amount of 0.1 to 5% by weight, more preferably 0.5 to 2% by weight, based on the total weight of the total composition. If the corrosion inhibitor is excessively contained, insoluble matter may be generated due to excessive complex salt formation, and if it is contained too little, it is difficult to prevent corrosion of iron by chlorine ions.
- admixtures are additives used to improve the performance of concrete before or after hardening and to impart specific performance.
- the present invention by including the admixture used in concrete in the snow removal composition, it is possible to improve the properties such as compressive strength of concrete when the snow removal agent is used in concrete structures such as roads.
- the admixture may be a polycarboxylic acid admixture using acrylic acid as a base in order to improve the compressive strength of concrete.
- acrylic acid for example, methyl methacrylate, ethyl methacrylate, propyl methacrylate, polycarbonate, etc. may be used, and methyl methacrylate is preferably used.
- the admixture may be included in 0.01 to 5% by weight based on the total weight of the total composition, preferably 0.03 to 0.2% by weight, more preferably 0.05 to 0.15% by weight. If the admixture is included in less than 0.01% by weight, the effect of improving durability, such as freeze-thaw resistance and bonding induction effect between mixtures, may be weak, and if it is included in more than 5% by weight, the strength enhancement rate decreases as the addition ratio of the admixture increases As a result, the durability improvement effect is weakened, so economic feasibility may decrease and snow removal performance may be affected.
- liquid snow removal agent containing the admixture can improve the compressive strength of concrete by up to 44.7%.
- the eco-friendly liquid snow remover of the present invention also includes a penetrating sealer.
- a penetrating sealer When the dissolved chloride water generated by the use of the deicing agent penetrates into the pores of the concrete, freezing and thawing is repeated due to the heat of dissolution and lowering of the freezing point generated by the deliquescence of the chloride-based material. Specifically, when the moisture penetrating into the concrete freezes, the surface layer of the concrete is destroyed due to the expansion pressure generated as the volume increases, and the melting phenomenon is repeated again due to the deicing agent penetrating with the moisture, and crack generation is promoted.
- the permeable waterproofing agent in the snow removal agent composition by including the permeable waterproofing agent in the snow removal agent composition, a film that prevents moisture from penetrating the concrete when the snow removal agent is used is formed.
- the silicon component of the penetrating waterproofing agent reacts with the calcium component of the concrete to form a calcium-silicate-hydrate (C-S-H) bond.
- This C-S-H bond forms a coating film that blocks moisture penetrating into the concrete surface. Therefore, moisture, which is a cause of concrete deterioration, cannot penetrate, thereby minimizing freeze-thaw damage and prolonging the life of concrete.
- the concrete treated with the deicing agent containing the permeable waterproofing agent exhibited a water permeability of 71% or less compared to the non-treated sample.
- a silicone-based waterproofing agent capable of chemically bonding with concrete in a wet environment may be used.
- at least one waterproofing agent selected from silane, silicate, siliconate, and siloxane, and octyltriethoxysilane, octamethylcyclotetrasiloxane, It is more preferred to use one of polymethylhydrosilane and mixtures thereof.
- silane and siloxane may be mixed and used.
- the silane and the siloxane may be mixed in a weight ratio of 1:1 to 10:1, preferably in a weight ratio of 2:1 to 6:1.
- the total content of the penetrating waterproofing agent may be 0.05% by weight or more, for example, 0.1 to 3% by weight, preferably 0.15 to 1% by weight, more preferably 0.2 to 0.5% by weight, based on the total weight of the total composition. there is.
- the eco-friendly liquid snow removal agent of the present invention induces smooth dispersion of the admixture and penetration prevention agent used in the existing concrete field by including a dispersant to solve the problem of poor dispersion in the process of applying the admixture and penetration prevention agent to the snow removal agent. and to secure the ease of spraying through uniform mixing.
- the dispersant may be used in an amount of 10 parts by weight or less, preferably 0.001 to 10 parts by weight, more preferably 0.005 to 5 parts by weight, and even more preferably 0.01 to 3 parts by weight, based on 100 parts by weight of the penetrating waterproofing agent. .
- the content of the dispersant compared to the permeable waterproofing agent is higher than the above range, the water blocking performance of the penetrating preventing agent may be hindered, and even if the water blocking performance is improved to adjust the components of the dispersant, the compressive strength of concrete may deteriorate. .
- the dispersant is used in a small amount as in the above range, the effect of the permeable waterproofing agent is properly exerted by the dispersant and the effect of other additives such as admixtures is not hindered, so that the concrete after applying the liquid snow remover shows excellent compressive strength and moisture resistance. can be effectively blocked.
- the total content of the dispersant may be 0.0002 to 10% by weight, preferably 0.001 to 1% by weight, more preferably 0.002 to 0.02% by weight based on the total weight of the total composition.
- dispersant materials exhibiting protective colloidal and surfactant properties may be used.
- hydrophilic colloid When a hydrophilic colloid is added to a hydrophobic colloid, the hydrophilic colloid surrounds the hydrophobic colloid and becomes stable, so even when an electrolyte is applied, it does not coagulate and mixes well.
- the hydrophilic colloid at this time is called a protective colloid.
- polyvinyl alcohol As the protective colloid, polyvinyl alcohol, gum arabic, hydroxyethyl cellulose, carboxy methyl cellulose, etc. may be used, and polyvinyl alcohol is preferred.
- the protective colloid may be included in an amount of 0.0001 to 5% by weight, preferably 0.0004 to 0.3% by weight, and more preferably 0.0007 to 0.01% by weight, based on the total weight of the total composition.
- the compressive strength of the concrete to which the liquid deicing agent is applied can be adjusted so that moisture penetration is effectively improved while the compressive strength is high.
- the dispersant is preferably used in a weight ratio of 1:1 to 1:10, preferably 1:1.5 to 1:5, between the protective colloid and the surfactant.
- At least one of oil-in-water (O/W) and water-in-oil (W/O) surfactants is preferable to use at least one of oil-in-water (O/W) and water-in-oil (W/O) surfactants as the surfactant.
- Oil-in-water surfactants disperse oil in the form of particles in water, and water-in-oil surfactants do the opposite.
- the oil-in-water surfactant may use glycerin, isopropyl alcohol, ethylene glycol, etc., which exhibit oil-in-water emulsifying properties capable of dispersing oil in water, and glycerin is most preferable.
- glycerin isopropyl alcohol, ethylene glycol, etc.
- the freeze-thaw resistance of concrete can be improved.
- the oil-in-water surfactant may be included in an amount of 0.0005 to 5% by weight, preferably 0.00075 to 0.5% by weight, and more preferably 0.001 to 0.005% by weight based on the total weight of the total composition.
- water-in-oil type surfactant polyethylene glycol, propylene glycol, etc., which exhibit water-in-oil emulsification characteristics capable of dispersing oil in water, may be used, and polyethylene glycol is preferable.
- the water-in-oil type surfactant may be included in an amount of 0.0005 to 5% by weight, preferably 0.00075 to 0.5% by weight, and more preferably 0.001 to 0.005% by weight based on the total weight of the total composition.
- both oil-in-water and water-in-oil surfactants may be used.
- glycerin and polyethylene glycol may be used as the oil-in-water and water-in-oil surfactants.
- the weight ratio of the oil-in-water and water-in-oil surfactants may be 10:1 to 1:10, preferably 2:1 to 1:2.
- the total content of the surfactant may be 0.001 to 10% by weight, preferably 0.0015 to 1% by weight, more preferably 0.002 to 0.01% by weight based on the total weight of the total composition.
- the present invention includes and optimizes the dispersant as described above, when the penetration inhibitor or admixture used in concrete is applied to the liquid snow removal agent, dispersion is difficult and the effect of the penetration prevention agent or admixture is well displayed in the snow removal agent even if dispersibility is secured. It is possible to improve both the compressive strength and moisture barrier performance of concrete by overcoming the limitation that it does not work.
- the average value of the zeta potential of the liquid snow remover using the dispersant of the present invention has a very stable value of -317.11mV, confirming that the liquid snow remover composition is well dispersed, and the concrete after application thereof It was confirmed that the compressive strength was excellent and the water permeability was low.
- the liquid snow removal agent of the present invention is characterized in that the DLS diameter analyzed by dynamic light scattering (DLS) measurement is 1,000 to 3,000 nm, particularly 1,500 to 2,500 nm.
- DLS dynamic light scattering
- the liquid snow remover of the present invention can achieve a water permeability of 80% or less, particularly 75% or less, while the compressive strength of concrete is as high as 15 MPa or more, particularly 17 MPa or more, preferably 18 MPa or more, at the DLS diameter within the above range. there is. If the DLS diameter is less than 1,000 nm, the water permeability is further reduced and moisture can be easily blocked, but the surface waterproof film is quickly formed and it is difficult to penetrate the admixture, so the effect of improving the compressive strength of concrete is insufficient, and the compressive strength is lowered to 17 MPa or less. .
- the concrete compressive strength is good, but the activity of the penetrating waterproofing agent is reduced and the water permeability is increased to 80% or more, so the water barrier performance is lowered and may be unsuitable for use.
- the DLS diameter of the liquid snow remover affects the compressive strength and moisture barrier performance of concrete to which the liquid snow remover is applied, and that the compressive strength and moisture barrier performance can be simultaneously implemented within a specific range.
- the optimal DLS diameter capable of suppressing water permeability while maintaining good compressive strength of concrete was specified as 1,000 to 3,000 nm.
- the eco-friendly liquid snow remover according to the present invention may also include additional additives.
- the additional additive is not particularly limited as long as it is a component capable of preventing corrosion and acting as an admixture.
- the additional additive may be included in an amount of 0.1 to 5% by weight based on the total weight of the total composition.
- the liquid snow removal agent of the present invention may be prepared by dissolving a chloride-based material, a corrosion inhibitor, an additional additive, an admixture, a permeable waterproofing agent, and a dispersing agent in a solvent, followed by stirring at 100 to 1,000 rpm, preferably 400 to 600 rpm.
- the stirring may be performed for 1 to 48 hours, preferably for 12 to 36 hours.
- the eco-friendly liquid snow removal agent in which the concrete damage is suppressed prepared in the present invention can improve the resistance to freezing and thawing of concrete. It can be seen that the freezing and thawing of concrete in the snow removal agent according to an embodiment of the present invention occurs very little, with an average of 1.21% compared to sodium chloride, and the concrete combined with the snow removal agent has excellent freeze-thaw resistance.
- the eco-friendly liquid snow removal agent in which the concrete damage is suppressed can prevent corrosion of steel.
- the steel corrosion rate of the snow remover according to an embodiment of the present invention has a very low steel corrosion rate of 6.63% on average compared to sodium chloride, despite mainly using chloride-based substances with very high corrosiveness and containing various materials such as admixtures and permeable waterproofing agents. can confirm that
- the eco-friendly liquid snow remover with concrete damage suppressed according to the present invention contains each component in an optimal composition ratio, thereby exhibiting excellent ice melting performance and preventing corrosion and damage of steel and concrete to improve durability and improve physical properties. It has the advantage of good workability during spraying due to excellent flowability and dispersibility.
- deionized water as a solvent
- calcium chloride (CaCl 2 2H 2 0) as a melting agent
- sodium gluconate as a corrosion inhibitor
- sodium nitrite as an additional additive
- methyl methacrylate as an admixture
- octyltriethoxysilane as a permeable waterproofing agent
- Polymethylhydrosiloxane was used, and the dispersant was selected from among polyvinyl alcohol, polyethylene glycol, glycerin, isopropyl alcohol, ethylene glycol and propylene glycol.
- ⁇ DI deionized water
- SG sodium gluconate
- SN sodium nitrite
- MMA methyl methacrylate
- OS octyltriethoxysilane
- PMHS poly(methylhydrosiloxane);
- PVA polyvinylalcohol
- PEG polyethylene glycol
- IPA iso-propyl alcohol
- EG ethylene glycol
- PG propylene glycol
- the DLS diameter and zeta potential of the snow remover sample were repeatedly measured three times using a particle size distribution, zeta potential, and molecular weight measuring instrument (Korea Otsuka Electronics Co., Ltd., ELSZ-2000ZS) to obtain an average value.
- the activity of the permeable waterproofing agent was measured by referring to the method described in KS F 4930:2012, and the concrete specimen was cured according to the specimen standard described in EM502-2, and the specimen had a compressive strength of 15 MPa on the basis of 7 days after curing. was manufactured.
- test piece was completely dried at 23 ° C. and 50% relative humidity for 24 hours, and then the compressive strength was measured according to the method described in KS F 2405: 2010.
- the average zeta potential value of Examples 1 to 9 was -317.11 mV, which was more stable than the average zeta potential value of -299.45 mV of Comparative Examples 1 to 9.
- the snow removal agents of Examples 1 to 9 containing both a protective colloid (PVA) and a surfactant (PEG and/or glycerin) as a dispersant showed a DLS diameter of 1,500 to 2,500 nm, and had a DLS diameter in the above range.
- the water permeability was 71% or less and the compressive strength was 18 MPa or more.
- Comparative Examples 7 to 9 which contain both protective colloid (PVA) and surfactants (PEG and glycerin), but contain an excessive amount of 1.1% by weight or more based on the total composition weight, have a DLS diameter of less than 1,000 nm, which is too low value, the water permeability is low, but the waterproof coating film is formed excessively quickly in the concrete, and it is difficult to penetrate the admixture, and the compressive strength is lower than 17 MPa.
- PVA protective colloid
- PEG and glycerin surfactants
- Comparative Examples 2, 4, and 5 using isopropyl alcohol, ethylene glycol, and propylene glycol as dispersants showed very high DLS diameters of 8,000 to 24,000 nm, and in this case, the water permeability to compressive strength showed an excessively high value.
- the liquid snow removal agent according to the present invention contains a specific dispersing agent in a specific ratio, thereby providing a snow removal agent having a DLS diameter of 1,000 to 3,000 nm, including a concrete admixture and a penetrating waterproofing agent, and well-dispersed.
- a specific dispersing agent in a specific ratio, thereby providing a snow removal agent having a DLS diameter of 1,000 to 3,000 nm, including a concrete admixture and a penetrating waterproofing agent, and well-dispersed.
- the concrete exhibits excellent compressive strength of 18 MPa or more and low water permeability of 71% or less. This is a characteristic that cannot be obtained when the content range of the dispersant is different or when other types of dispersants such as isopropyl alcohol, ethylene glycol, and propylene glycol are used.
- Example 1 -2.4
- Example 2 -1.7
- Example 3 -0.3
- Example 4 1.2
- Example 5 -0.7
- Example 6 0.2
- Example 7 -3.5
- Example 8 -2.6
- Example 9 -1.1
- Examples 1 to 9 showed a very low relative loss rate due to freezing and thawing of concrete compared to sodium chloride, an absolute value of less than 4%, and it was confirmed that they had high resistance to freezing and thawing. It can be judged that the permeable waterproofing agent penetrating into the pores of the concrete chemically combines with the concrete to have water resistance and resistance to freezing and thawing.
- Example 1 7.2
- Example 2 4.3
- Example 3 5.7
- Example 4 9.4
- Example 5 5.4
- Example 6 6.1
- Example 7 7.7
- Example 8 8.4
- Example 9 5.5
- Examples 1 to 9 were measured to be less than 10% corrosive to iron than sodium chloride used as a general snow removal agent. It was confirmed that the snow remover prepared according to the above embodiment mainly uses a chloride-based material having a very high corrosiveness, and exhibits an excellent anti-corrosion effect even though materials such as an admixture or a penetrating waterproofing agent are included.
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Abstract
Description
구분 | 제타전위(mV) | DLS 직경(nm) | 비처리 샘플 대비 물투과도(%) | 압축강도(MPa) |
실시예 1 | -511.72 | 2147.6 | 68 | 19.2 |
실시예 2 | -368.98 | 1790.8 | 63 | 18.7 |
실시예 3 | -374.45 | 1652 | 65 | 18.5 |
실시예 4 | -400.31 | 2187.5 | 71 | 20.3 |
실시예 5 | -279.75 | 1851.5 | 65 | 20 |
실시예 6 | -358.27 | 2053.6 | 69 | 19.4 |
실시예 7 | -66.18 | 1670.4 | 67 | 21.7 |
실시예 8 | -234.14 | 1752.3 | 71 | 18.7 |
실시예 9 | -260.15 | 2014.1 | 70 | 19.5 |
비교예 1 | -371.08 | 7014.7 | 87 | 19.1 |
비교예 2 | -284.51 | 8129.6 | 82 | 18.9 |
비교예 3 | -267.92 | 4771.9 | 80 | 20.1 |
비교예 4 | -44.83 | 20377.6 | 81 | 17.8 |
비교예 5 | -466.74 | 23522.3 | 90 | 18.7 |
비교예 6 | -274.53 | 4517.2 | 83 | 19.5 |
비교예 7 | -411.5 | 897.5 | 61 | 15.7 |
비교예 8 | -299.47 | 413.7 | 59 | 16.6 |
비교예 9 | -274.51 | 394.5 | 65 | 17 |
구분 | 염화 나트륨 대비 콘크리트 동결융해(%) |
실시예 1 | -2.4 |
실시예 2 | -1.7 |
실시예 3 | -0.3 |
실시예 4 | 1.2 |
실시예 5 | -0.7 |
실시예 6 | 0.2 |
실시예 7 | -3.5 |
실시예 8 | -2.6 |
실시예 9 | -1.1 |
구분 | 염화나트륨 대비 강재 부식도(%) |
실시예 1 | 7.2 |
실시예 2 | 4.3 |
실시예 3 | 5.7 |
실시예 4 | 9.4 |
실시예 5 | 5.4 |
실시예 6 | 6.1 |
실시예 7 | 7.7 |
실시예 8 | 8.4 |
실시예 9 | 5.5 |
Claims (12)
- 염화물계 물질, 침투성 방수제 및 분산제를 포함하는 콘크리트 파손이 억제된 친환경 액상 제설제.
- 제 1 항에 있어서,상기 염화물계 물질이 염화칼슘(CaCl2), 염화나트륨(NaCl), 염화칼륨(KCl) 및 염화마그네슘(MgCl2)에서 선택되는 1종 이상인, 콘크리트 파손이 억제된 친환경 액상 제설제.
- 제 1 항에 있어서,상기 침투성 방수제가 실란, 규산염, 실리코네이트 및 실록산 중에서 선택되는 1종 이상인, 콘크리트 파손이 억제된 친환경 액상 제설제.
- 제 1 항에 있어서,상기 분산제가 보호 콜로이드, 및 수중유형(O/W) 및 유중수형(W/O) 중 하나 이상의 계면활성제를 포함하는, 콘크리트 파손이 억제된 친환경 액상 제설제.
- 제 4 항에 있어서,상기 보호 콜로이드 및 계면활성제의 중량비가 1:1 내지 1:10인, 콘크리트 파손이 억제된 친환경 액상 제설제.
- 제 4 항에 있어서,상기 보호 콜로이드가 폴리비닐알콜, 아라비아검, 하이드록시에틸 셀룰로오스 및 카르복시 메틸 셀룰로오스로 구성된 군에서 선택되는, 콘크리트 파손이 억제된 친환경 액상 제설제.
- 제 4 항에 있어서,상기 보호 콜로이드의 함량이 전체 조성물 중량에 대하여 0.0001 내지 5중량%인, 콘크리트 파손이 억제된 친환경 액상 제설제.
- 제 4 항에 있어서,상기 계면활성제의 함량이 전체 조성물 중량에 대하여 0.001 내지 10중량%인, 콘크리트 파손이 억제된 친환경 액상 제설제.
- 제 4 항에 있어서,상기 수중유형 및 유중수형 계면활성제의 중량비가 10:1 내지 1:10인, 콘크리트 파손이 억제된 친환경 액상 제설제.
- 제 1 항에 있어서,글루콘산염, 오르쏘인산염, 폴리인산염 및 규산염에서 선택되는 1종 이상의 부식방지제를 더 포함하는, 콘크리트 파손이 억제된 친환경 액상 제설제.
- 제 1 항에 있어서,메틸메타아크릴레이트, 에틸메타아크릴레이트 및 폴리카보네이트 중에서 선택되는 1종 이상의 혼화제를 더 포함하는, 콘크리트 파손이 억제된 친환경 액상 제설제.
- 제 1 항에 있어서,상기 제설제의 DLS 직경이 1,000 내지 3,000nm인, 콘크리트 파손이 억제된 친환경 액상 제설제.
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KR101058157B1 (ko) * | 2010-12-13 | 2011-08-24 | 주식회사 드림이앤씨 | 염해방지용 침투식 방수제를 이용한 철근콘크리트 구조물 보수 보강공법 |
KR101405139B1 (ko) * | 2014-04-25 | 2014-06-10 | (주)세명테크 | 친환경 액상 제설제 및 그것의 제조 방법 |
KR20160026354A (ko) * | 2014-08-31 | 2016-03-09 | 이지현 | 제설 효과를 상승시킨 친환경적인 제설제 개발 |
KR102141869B1 (ko) | 2020-01-31 | 2020-08-06 | 두정산업 주식회사 | 느리게 방출되는 제설제 조성물 |
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- 2022-11-01 CA CA3240048A patent/CA3240048A1/en active Pending
- 2022-11-01 WO PCT/KR2022/016925 patent/WO2023132449A1/ko active Application Filing
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KR20040065667A (ko) | 2003-01-15 | 2004-07-23 | 주식회사 엘지화학 | 저 전압에서 구동되는 유기 발광 소자 |
KR101028193B1 (ko) * | 2010-11-22 | 2011-04-08 | (주)즐거운미래 | 친환경 액상 제설제 조성물 |
KR101058157B1 (ko) * | 2010-12-13 | 2011-08-24 | 주식회사 드림이앤씨 | 염해방지용 침투식 방수제를 이용한 철근콘크리트 구조물 보수 보강공법 |
KR101405139B1 (ko) * | 2014-04-25 | 2014-06-10 | (주)세명테크 | 친환경 액상 제설제 및 그것의 제조 방법 |
KR20160026354A (ko) * | 2014-08-31 | 2016-03-09 | 이지현 | 제설 효과를 상승시킨 친환경적인 제설제 개발 |
KR102141869B1 (ko) | 2020-01-31 | 2020-08-06 | 두정산업 주식회사 | 느리게 방출되는 제설제 조성물 |
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