KR101046970B1 - Finishing composition using ladle slag crystal growth reaction as surface protection material of concrete structure - Google Patents
Finishing composition using ladle slag crystal growth reaction as surface protection material of concrete structure Download PDFInfo
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- KR101046970B1 KR101046970B1 KR20080123361A KR20080123361A KR101046970B1 KR 101046970 B1 KR101046970 B1 KR 101046970B1 KR 20080123361 A KR20080123361 A KR 20080123361A KR 20080123361 A KR20080123361 A KR 20080123361A KR 101046970 B1 KR101046970 B1 KR 101046970B1
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/04—Silica-rich materials; Silicates
- C04B14/10—Clay
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B16/00—Use of organic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of organic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B16/04—Macromolecular compounds
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
- C04B2111/00293—Materials impermeable to liquids
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00482—Coating or impregnation materials
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/34—Non-shrinking or non-cracking materials
- C04B2111/343—Crack resistant materials
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
본 발명은 레이들 슬래그를 포함하는 슬래그 혼합물의 결정성장 반응을 이용한 콘크리트 표면보호용 마감재 조성물에 관한 것이다. 본 발명은 시멘트 10~30중량%, 규사 또는 석회석 미분말 20~50중량%, 레이들 슬래그와 고로수쇄슬래그가 중량비 2~5:10~40의 비율로 혼합된 분말 첨가제가 20~50중량%, 무수석고 1~3중량%, 에틸렌 비닐 아세테이트 폴리머 분말 2~7중량%, 벤토나이트 분말 3~10중량%, 탄산나트륨 1~3중량%를 포함하는 조성물과 통상의 증점제, 안정화제, 소포제, 유동화제, 조막제 중 어느 하나의 첨가제가 2중량% 혼합 사용된다. 본 발명의 표면보호용 마감재는 부착강도가 우수하고 물흡수 및 습기투과성이 낮으며, 이로 인해 염화물 및 내화학저항성, 중성화저항성 등이 우수하다. 또한, 모체에 발생된 균열과 함께 표면에 시공한 마감재가 균열을 발생시키던 기존과는 달리 초기 건조 후 잔갈림과 같은 균열이 발생하지 않으며, 레이들 슬래그를 포함한 슬래그의 결정성장 반응과 팽윤 특성으로 방수성 및 내구성 증진에 유용한 표면 마감재로 효과가 있다.The present invention relates to a concrete surface protection finish composition using the crystal growth reaction of the slag mixture including the ladle slag. The present invention is 10 to 30% by weight of cement, 20 to 50% by weight of fine silica or limestone powder, 20 to 50% by weight of a powder additive mixed with a ladle slag and blast furnace chain slag in a ratio of 2 to 5: 10 to 40 by weight, 1 to 3% by weight of anhydrous gypsum, 2 to 7% by weight of ethylene vinyl acetate polymer powder, 3 to 10% by weight of bentonite powder, 1 to 3% by weight of sodium carbonate, and a conventional thickener, stabilizer, antifoaming agent, fluidizing agent, 2% by weight of the additive of any one of the film forming agents is used. The surface protection finish of the present invention is excellent in adhesion strength, low water absorption and moisture permeability, and therefore excellent in chloride and chemical resistance, neutralization resistance and the like. In addition, unlike the existing ones in which the finishing material applied to the surface together with the cracks generated in the matrix caused cracks, cracks such as cracking after initial drying do not occur, and due to crystal growth reaction and swelling characteristics of slag including ladle slag Effective as a surface finish useful for enhancing water resistance and durability.
콘크리트, 레이들슬래그, 고로수쇄슬래그, 표면마감재, 중성화, 균열, 폴리머 Concrete, ladle slag, blast furnace slag, surface finish, neutralization, crack, polymer
Description
본 발명은 레이들 슬래그를 포함하는 슬래그 혼합물의 결정성장 반응을 이용한 콘크리트 표면보호용 마감재 조성물에 관한 것이다.The present invention relates to a concrete surface protection finish composition using the crystal growth reaction of the slag mixture including the ladle slag.
본 발명은 더욱 상세하게 재유화형 분말수지에 의한 물리적 결합력 향상과 더불어 내마모성, 내충격성, 내화학성, 내수성 등의 성능 향상을 위해 산업부산물로 발생되는 레이들 슬래그의 결정성장 반응 및 벤토나이트의 팽윤 특성을 이용하여 콘크리트 표면을 여러 열화인자로부터 보호함과 동시에 미세균열에 대한 저항성을 향상시킨 표면 보호용 마감재의 조성물에 관한 것이다.The present invention more specifically improves the crystal growth reaction of ladle slag generated as an industrial by-product and the swelling characteristics of bentonite in order to improve the physical bonding strength by re-emulsified powder resin, as well as to improve the performance of wear resistance, impact resistance, chemical resistance and water resistance. The present invention relates to a composition of a surface protection finishing material which protects a concrete surface from various deterioration factors and improves resistance to microcracks.
본 발명은 토목용 콘크리트 구조물의 보호, 미세균열 보수재로서의 기능뿐만 아니라, 건축용 내ㆍ외장 마감재 및 미장재로서의 기능을 동시에 기대할 수 있으며, 열화된 콘크리트 표면에 도포함으로써 물리적 또는 화학적 결합에 의한 내구성 향상과 부착성 및 강도를 증가시킬 수 있다.The present invention can be expected not only for the protection of civil concrete structures, as a microcracks repair material, but also as a building interior and exterior finishing material and plastering material at the same time, by applying to the deteriorated concrete surface to improve durability by physical or chemical bonding and It can increase the adhesion and strength.
통상적으로 콘크리트 구조물은 물과 수화반응을 통해 안정한 물질을 생성하는 수경성 재료인 시멘트를 주결합재로 사용하고 있으며, 시간 경과에 따라 주위환경에 의한 열화현상으로 내구성과 안정성이 저하된다. 이러한 열화현상은 콘크리트 내부 및 표면에 존재하는 많은 공극을 통해 수분이나 기타 외부 유해물질들이 내부로 침투하여 콘크리트 자체를 열화시키거나 철근의 부식 등을 통해 구조물 성능을 저하시키는 외부적인 원인에 기인하는 것이 대부분이다.In general, concrete structures use cement as a main binder, which is a hydraulic material that generates a stable substance through water and hydration reactions, and durability and stability are degraded due to deterioration caused by the surrounding environment over time. This deterioration phenomenon is due to external causes that deteriorate the structure performance through deterioration of concrete itself or corrosion of reinforcing bar by penetration of moisture or other harmful substances into the interior through many voids in the concrete and the surface. Mostly.
또한, 콘크리트 구조물의 수명에 영향을 미치는 열화현상의 요인으로는 재료 및 시공적 요인, 온도변화, 계절변화 등의 환경적인 요인에 의한 동결융해, 철근부식, 중성화, 염해, 알칼리 골재 반응 등을 들 수 있으며, 이러한 요인들이 복합적으로 서서히 작용함에 따라 시공 후 시간 경과에 따라 콘크리트의 균열, 강도저하, 침식 등으로 나타나는 것이다. 따라서 콘크리트 구조물의 열화 방지와 내구성 유지를 위해서는 수분 및 외부 열화인자들의 침투를 근본적으로 차단해야 한다.In addition, deterioration factors affecting the lifespan of concrete structures include freeze-thawing, rebar corrosion, neutralization, salting, and alkali aggregate reactions caused by environmental factors such as material and construction factors, temperature changes, and seasonal changes. As these factors act slowly and gradually, they appear as cracks, strength degradation, and erosion of concrete over time after construction. Therefore, in order to prevent deterioration of concrete structures and maintain durability, infiltration of moisture and external deterioration factors must be fundamentally blocked.
일반적으로 건축물은 신축 후 시간 경과에 따라 콘크리트의 내구성능이 저하되며, 성능의 유지관리 및 강화를 위해 다양한 표면보호용 재료를 사용한다. 콘크리트 표면보호재는 크게 시멘트계와 합성수지계로 구분할 수 있으며, 시멘트계의 분말 제품은 시공두께가 1㎜이하로 도포해야 하고 시공두께를 1㎜이상으로 할 경우 미장 표면에서 균열이 발생한다. 또한 합성수지계는 도장재로 에폭시 및 우레탄 계열을 주로 사용하고 있으나, 에폭시계 표면보호재는 자외선에 노출시 변색의 문제점이 있으며, 우레탄 계열은 온도에 따른 수축에 민감하여 들뜸 현상이 발생될 수 있다.In general, a building's durability is deteriorated over time after construction, and various surface protection materials are used to maintain and reinforce performance. Concrete surface protection materials can be classified into cement and synthetic resins. Cement-based powder products should be coated with a coating thickness of 1 mm or less, and cracks will occur on the surface of plasterer if the coating thickness is 1 mm or more. In addition, the synthetic resin is mainly used epoxy and urethane series as a coating material, epoxy-based surface protective material has a problem of discoloration when exposed to ultraviolet light, the urethane-based is susceptible to shrinkage due to temperature may cause a lifting phenomenon.
또한 아크릴계 합성수지를 50% 이상으로 안료, 방수제 등을 배합하여 은폐력, 작업성, 부착성이 양호한 표면보호재는 시공이 편리하나, 콘크리트와의 수축ㆍ팽창의 차이에 의해 표면 코팅층이 박리되면서 서로 분리된다. 이로 인해 박리된 공간에 습기가 침투하여 유기물질이 부패하는 것과 통기성이 취약하여 중성화로 인한 콘크리트 구조물의 내구성을 저하시키는 등의 문제점이 있다.In addition, surface protective materials with good hiding power, workability, and adhesion by mixing pigments and waterproofing agents with more than 50% of acrylic synthetic resin are convenient to install, but the surface coating layers are separated from each other due to the difference in shrinkage and expansion with concrete. . As a result, moisture penetrates into the peeled space, and organic materials decay, and air permeability is poor, thereby degrading durability of the concrete structure due to neutralization.
이러한 문제점 개선을 위해 최근에는 시멘트와 폴리머 분말수지를 혼합 사용하는 유ㆍ무기 재료의 복합 기능을 갖는 폴리머 시멘트 모르타르를 다양한 공법의 마감재로 사용하고 있으며, 시공시 작업성 및 편리성 등으로 인하여 매우 다양한 콘크리트 구조물에 사용되어 많은 부분에서 개발이 이루어진 재료이다.In order to improve this problem, recently, polymer cement mortar having a composite function of organic and inorganic materials using a mixture of cement and polymer powder resin is used as a finishing material of various construction methods. It is a material that has been used in concrete structures and developed in many parts.
이에 관한 종래의 기술 및 특허를 보면, 한국공개특허 제2000-0017879호에는 시멘트 57중량%, 규사 7중량%, 에틸렌 비닐 아세테이트 1중량%, 활성 실리카 1중량%, 물 34중량%로 구성된 방수재가 개시되어 있다.In the related art and patent, Korean Patent Publication No. 2000-0017879 discloses a waterproof material composed of 57% by weight of cement, 7% by weight of silica sand, 1% by weight of ethylene vinyl acetate, 1% by weight of activated silica, and 34% by weight of water. Is disclosed.
한국공개특허 제2002-0031684호에는 유화 분산시킨 스테아린산 칼슘과 아크릴 에멀젼으로 구성된 A제와 백시멘트, 규사, 폴리옥시 에틸렌 라우릴 에테르 등으로 구성된 B제를 혼합하는 방수제가 개시되어 있다.Korean Patent Laid-Open Publication No. 2002-0031684 discloses a waterproofing agent which mixes an agent A composed of emulsified and dispersed calcium stearate and an acrylic emulsion and a agent B composed of back cement, silica sand, polyoxyethylene lauryl ether and the like.
또한, 한국공개특허 제2003-0071231호에서는 에폭시 수지, 수산화알루미늄, 시멘트, 용제 및 기타 성분 포함 주제와 폴리아미드 수지, 이산화티탄, 실리케이트, 물 등의 경화제로 이루어지는 마감재가 개시되어 있다.In addition, Korean Laid-Open Patent Publication No. 2003-0071231 discloses a finishing material comprising an epoxy resin, aluminum hydroxide, cement, a solvent and other components, and a curing agent such as polyamide resin, titanium dioxide, silicate, and water.
또한, 한국공개특허 제2004-0026740호에는 칼슘 술폰산 알루미네이트 10중량%, 마이크로 실리카 50중량%, 카르복실 메틸 셀룰로우즈 5중량%, 고령토 5중량%, 펄프 가루 5중량% 및 수성 아크릴 폴리머제 25중량%를 혼합한 고강도 폴리머 침투성 모르타르가 개시되어 있다.In addition, Korean Patent Publication No. 2004-0026740 discloses 10% by weight of calcium sulfonic acid aluminate, 50% by weight of micro silica, 5% by weight of carboxyl methyl cellulose, 5% by weight of kaolin, 5% by weight of pulp powder and aqueous acrylic polymer. A high strength polymer permeable mortar mixed with 25% by weight is disclosed.
또한, 한국공개특허 제2004-0044613호는 방수와 더불어 단열성 증대를 위한 방법으로 시멘트 30~50중량%, 규사 20~40중량%를 주성분으로 비정질 실리케이트 5~10중량%, 고분자 고상 수지 1~3중량%, 비정질계 산화실리콘 3~10중량%를 혼합하여 제조한 침투성 방수재가 개시되어 있다.In addition, Korean Patent Laid-Open Publication No. 2004-0044613 is a method for increasing heat insulation and insulation, and 5 to 10% by weight of amorphous silicate based on 30 to 50% by weight of cement and 20 to 40% by weight of silica sand and polymer
이들 종래의 기술은 시멘트계 재료가 기본적으로 사용되는 폴리머 시멘트계 마감재로 시공두께가 증가함에 따라 경화시 건조수축에 따른 균열 발생과 이로 인한 누수, 내구성 저하 등의 문제점으로 소재를 보호하는 역할의 마감재로 한계가 있어 사용상 제한을 받고 있는 실정이다.These conventional technologies are polymer cement finishes in which cement materials are basically used, and as the construction thickness increases, they are limited to finish materials that protect materials from problems such as cracks caused by dry shrinkage during curing, water leakage, and durability degradation. There is a situation that is limited in use.
본 발명은 상기와 같은 종래의 여러 가지 문제점을 개선하기 위해 이루어진 것으로, 본 발명의 목적은 콘크리트 구조물의 표면을 여러 열화인자로부터 보호함과 동시에 미세균열에 대한 저항성을 향상시킬 수 있는 표면보호용 마감재 조성물을 제공하는데 있다.The present invention has been made to improve the various problems as described above, an object of the present invention is to protect the surface of the concrete structure from various deterioration factors and at the same time to improve the surface protection finish composition for micro-cracks To provide.
본 발명의 다른 목적은 내염성, 내알칼리성, 중성화 저항성 등의 내화학성 및 구조물의 표면 내구성과 방수성이 향상되도록 재유화형 분말수지와 레이들 슬래그의 반응성을 이용한 표면보호용 마감재 조성물을 제공하는데 있다.Another object of the present invention to provide a surface protection finish composition using the reactivity of the re-emulsified powder resin and ladle slag to improve the chemical resistance, such as flame resistance, alkali resistance, neutralization resistance and surface durability and waterproofness of the structure.
본 발명의 또 다른 목적은 슬래그의 반응특성 및 벤토나이트, 증점제, 폴리 카르복시 사카라이드계 안정화제 등의 첨가제 조합에 의한 가사시간 확보, 작업성 증대, 부착력 증대 등 시공성을 용이하게 할 수 있는 표면보호용 마감재 조성물을 제공하는데 있다.Still another object of the present invention is a surface protection finish that can facilitate construction properties such as securing the pot life, increasing workability, and increasing adhesion by slag reaction characteristics and additive combinations such as bentonite, thickeners, and polycarboxylate stabilizers. To provide a composition.
상기 목적을 달성하기 위한 본 발명의 레이들 슬래그를 포함하는 슬래그 혼합물의 결정성장 반응을 이용한 콘크리트 표면보호용 마감재 조성물은, 시멘트 10~30중량%, 규사 또는 석회석 미분말 20~50중량%, 레이들 슬래그와 고로수쇄슬래그가 중량비 2~5:10~40의 비율로 혼합된 분말 첨가제 20~50중량%, 무수석고 1~3중량%, 에틸렌 비닐 아세테이트 폴리머 분말 2~7중량%, 벤토나이트 분말 3~10중량%, 탄산나트륨 1~3중량%를 포함하고, 증점제, 안정화제, 소포제, 유동화제, 조막제 첨가제 중 어느 하나의 첨가제가 2중량% 혼합된 것을 특징으로 한다.Concrete surface protection finish composition using the crystal growth reaction of the slag mixture containing the ladle slag of the present invention for achieving the above object, 10 to 30% by weight of cement, 20 to 50% by weight of fine silica or limestone powder, ladle slag 20-50% by weight of powder additive mixed with blast furnace slag at a ratio of 2 to 5: 10 to 40 by weight, 1 to 3% by weight of anhydrous gypsum, 2 to 7% by weight of ethylene vinyl acetate polymer powder, 3 to 10% of bentonite powder It is characterized by including 1% to 3% by weight of sodium carbonate, the additive of any one of a thickener, stabilizer, antifoaming agent, fluidizing agent, film forming agent additives 2% by weight.
상기 레이들 슬래그는 산업부산물로 발생되는 무기질 재료로서 무수석고와 반응하여 팽창성의 결정성장 반응으로 초기 건조 후 잔갈림같은 균열이 발생하지 않으며 수화반응을 통하여 강도를 발현하는 특성을 가진다.The ladle slag is an inorganic material generated as an industrial by-product, and reacts with anhydrous gypsum and is an expandable crystal growth reaction, so that cracks such as cracking after initial drying do not occur, and have strength characteristics through hydration reaction.
또한, 탄산나트륨의 경우 레이들 슬래그를 포함하는 슬래그와 벤토나이트 분말에 동시 영향을 미치는 재료로써 슬래그의 수화물 결정 생성속도 및 생성량을 증대시키며, 탄산칼슘 결정 생성으로 물이 침투할 수 있는 경로를 일부 차단하게 된다. 더불어 벤토나이트의 팽윤 특성을 증가시켜 균열부위에서 물이나 유해물질 등의 침투를 방지하고 방수기능을 부여함과 동시에 표면보호마감재로써 우수한 성능 을 갖는다.In addition, in the case of sodium carbonate, it is a material that simultaneously affects slag including ladle slag and bentonite powder to increase the rate and amount of hydrate crystal formation of slag, and block some of the paths through which water can penetrate through the production of calcium carbonate crystal. do. In addition, by increasing the swelling characteristics of bentonite, it prevents the penetration of water or harmful substances in the cracks, imparts waterproof function, and has excellent performance as a surface protection finish material.
본 발명의 레이들 슬래그를 포함하는 슬래그 혼합물의 결정성장 반응을 이용한 콘크리트 표면보호용 마감재 조성물은 콘크리트 구조체의 표면에 도포하거나 주입하여 사용함으로써 균열이나 틈새에서 불용성 결정성장으로 누수를 방지하며, 우수한 부착강도와 낮은 습기투과성으로 중성화 진행, 염화물 침투 및 화학적 부식으로부터 표면을 보호하고 피해가 발생된 구조물을 신속하게 보수 및 억제하는 효과가 있다.Concrete surface protection finish composition using the crystal growth reaction of the slag mixture including the ladle slag of the present invention is applied to or applied to the surface of the concrete structure to prevent leakage by insoluble crystal growth in cracks and gaps, excellent adhesion strength And its low moisture permeability protects the surface from neutralization progression, chloride penetration and chemical corrosion and quickly repairs and suppresses damaged structures.
또한 본 발명의 콘크리트 구조물의 표면보호용 마감재는 슬래그의 침상형 결정 생성으로 치밀한 구조체를 형성함으로 내구성 확보는 물론 재유화형분말수지, 벤토나이트, 소포제, 고성능 유동화제 등의 적용으로 콘크리트 구조물의 표면열화 방지, 강도증가, 표면 도포시 용이한 작업성, 가사시간 확보 등 기존에 사용되고 있는 여러 가지 표면마감재에 비하여 동등한 수준 이상의 특성을 나타내는 우수한 효과가 있다.In addition, the surface protection finish of the concrete structure of the present invention to form a dense structure by the formation of needle-like crystals of slag to ensure durability, as well as to prevent surface degradation of the concrete structure by applying re-emulsified powder resin, bentonite, antifoaming agent, high performance fluidizing agent, Increasing the strength, easy workability when applying the surface, securing pot life, etc., has an excellent effect of exhibiting more than the same level of characteristics compared to the various surface finishes used in the past.
또한 본 발명은 시멘트, 슬래그, 규사, 석회석 미분말 등 주 재료가 무기질계로 구성되어 콘크리트 구조물의 표면부위와의 우수한 부착성은 물론 벤토나이트, 탄산나트륨, 고성능 유동화제 등 첨가제의 적용으로 콘크리트 구조물 표면의 미세균열 발생억제, 방수성 향상, 내화학성, 내염해성 등을 나타냄으로 다양한 콘크리트 구조물에 효과적으로 사용될 수 있다.In addition, the present invention is the main material, such as cement, slag, silica sand, limestone fine powder is composed of an inorganic type, fine cracks generated on the surface of the concrete structure by applying additives such as bentonite, sodium carbonate, high performance fluidizing agent as well as excellent adhesion to the surface of the concrete structure It can be effectively used in various concrete structures by showing suppression, water resistance improvement, chemical resistance, and salt resistance.
본 발명의 표면보호용 마감재는 시멘트, 고로수쇄슬래그, 수축ㆍ팽창에 대한 안정성을 향상시키고, 건조 및 소성 수축에 의한 마감재의 들뜸이나 박리현상을 방지할 수 있도록 레이들 슬래그, 무수석고, 탄산나트륨을 포함하고 균열발생 저감과 방수성능 향상, 내염성, 내산성 및 중성화저항성 등을 향상시킬 수 있는 벤토나이트 분말, 재유화형 폴리머 분말을 포함하며, 우수한 물성을 발현하기 위해 증점제, 안정화제, 소포제, 유동화제, 조막제 등의 첨가제를 선택적으로 혼합한다.Surface protection finish of the present invention includes a ladle slag, anhydrous gypsum, sodium carbonate to improve the stability of cement, blast furnace slag, shrinkage and expansion, and to prevent the lifting or peeling of the finish by drying and plastic shrinkage And bentonite powder and re-emulsifying polymer powder which can reduce cracks, improve water resistance, improve flame resistance, acid resistance and neutralization resistance, and include thickeners, stabilizers, antifoaming agents, fluidizing agents, and film forming agents to express excellent physical properties. Additives, such as these, are mixed selectively.
이에 관한 조성물 함량은 시멘트 10~30중량%, 규사 또는 석회석 미분말 20~50중량%, 레이들 슬래그와 고로수쇄슬래그가 중량비 2~5:10~40의 비율로 혼합된 분말 첨가제 20~50중량%, 무수석고 1~3중량%, 에틸렌 비닐 아세테이트 폴리머 분말 2~7중량%, 벤토나이트 분말 3~10중량%, 탄산나트륨 1~3중량%를 포함하고 증점제, 안정화제, 소포제, 유동화제, 조막제 첨가제 중 어느 하나의 첨가제가 2중량% 혼합된 것을 특징으로 하는 대기상태에서 균일하게 혼합한 분말 1액형으로 구성된다.The composition content of this is 10 to 30% by weight of cement, 20 to 50% by weight of silica sand or limestone fine powder, 20 to 50% by weight of a powder additive mixed with ladle slag and blast furnace slag in a ratio of 2 to 5: 10 to 40 weight ratio. 1 to 3% by weight of anhydrous gypsum, 2 to 7% by weight of ethylene vinyl acetate polymer powder, 3 to 10% by weight of bentonite powder, 1 to 3% by weight of sodium carbonate, thickener, stabilizer, antifoaming agent, glidant, film forming agent additive Any one of the additives is composed of a powder 1-component type, uniformly mixed in the atmosphere characterized in that 2% by weight of the mixture.
이하, 본 발명에 따른 레이들 슬래그를 포함하는 슬래그 혼합물의 결정성장 반응을 이용한 콘크리트 표면보호용 마감재 조성물에 대하여 상세히 설명하면 다음과 같다.Hereinafter, a concrete surface protection finish composition using the crystal growth reaction of the slag mixture including the ladle slag according to the present invention will be described in detail.
상기 레이들 슬래그는 고로수쇄슬래그와 함께 산업부산물로 발생되는 재료로써 평균입도 21㎛, 분말도 2500-3000㎠/g을 나타내고, 주요결정상은 C12A7(12CaOㆍ7Al2O3)과 C11A7ㆍCaF2(11CaOㆍ7Al2O3ㆍCaF2)으로 수화 초기 속경성을 나타내는 C-A-H 계 수화물이 생성됨으로써 초기강도가 우수하고 빠른 응결 시간을 가진다. 더욱이 무수석고와 반응하여 팽창성의 에트링자이트(ettringite) 생성은 마감재의 수축현상을 보상하여준다. 이러한 레이들 슬래그의 반응특성에 대한 분석결과를 도 1과 도 2에 나타내었다.The ladle furnace slag represents the average particle size 21㎛, fineness 2500-3000㎠ / g as a material produced by industrial by-products with the slag materials, the main crystalline phase is C 12 A 7 (12CaO and 7Al 2 O 3) and C 11 A 7 ㆍ CaF 2 (11CaO.7Al 2 O 3 ㆍ CaF 2 ) to produce CAH hydrate which shows fast initial hydration, and has excellent initial strength and fast setting time. Moreover, the expansion of expandable ettringite in reaction with anhydrous gypsum compensates for the shrinkage of the finish. Analysis results of the response characteristics of the ladle slag are shown in FIGS. 1 and 2.
한편, 레이들 슬래그의 주요 결정상인 C12A7의 초기 수화생성물은 C2AH8의 형태를 나타내며, 이것은 점차적으로 C3AH6의 형태로 변화한다. 이와 함께 비정질의 칼슘알루미네이트 수화물의 상당량이 생성되고, 알루미네이트 겔(gel)은 점차적으로 결정화된 Gibbsite(AH3)로 변화하게 된다. 만약, 수화반응이 free-CaO 수화물의 존재하에 반응한다면 알루미네이트 겔(gel)은 생성되지 않거나, 생성 되어도 그것의 양은 감소하게 된다.On the other hand, the initial hydration product of C 12 A 7 , the main crystal phase of ladle slag, shows the form of C 2 AH 8 , which gradually changes to the form of C 3 AH 6 . Along with this, a significant amount of amorphous calcium aluminate hydrate is produced, and the aluminate gel gradually changes to crystallized Gibbsite (AH 3 ). If the hydration reaction is reacted in the presence of free-CaO hydrate, no aluminate gel is produced or its amount is reduced.
또한, C11A7ㆍCaF2의 수화반응에서도 알루미네이트 겔(gel)과 C3AH6의 상이 주요한 생성물로 형성된다. 만약 그 온도가 25℃이하라면 소량의 C3AH8의 상이 생성되며, 심지어 15℃이하에서는 CAH10의 상이 형성될 수 있다. 형성된 알루미나 겔(gel)도 점차적으로 Gibbsite로 변화된다.In addition, in the hydration reaction of C 11 A 7 .CaF 2 , an aluminate gel and a phase of C 3 AH 6 are formed as main products. If the temperature is below 25 ° C., a small amount of C 3 AH 8 phase is produced, even below 15 ° C. CAH 10 phase can be formed. The formed alumina gel also gradually changes to Gibbsite.
또한, 두 화합물 C12A7과 C11A7ㆍCaF2의 수화반응은 매우 빠르며 상온에서 24시간 이내에 완결된다. 온도 30℃이상에서는 그 반응이 온도가 증가함에 따라 반응속도가 가속되며, W/C(물/시멘트) 비율이 증가함에 따라 반응속도는 급속한 증가를 보이나 최종 수화물량은 동일하다.In addition, the hydration reaction of the two compounds C 12 A 7 and C 11 A 7 ㆍ CaF 2 is very fast and is completed within 24 hours at room temperature. Above 30 ℃, the reaction rate accelerates as the temperature increases, and the reaction rate increases rapidly as the W / C (water / cement) ratio increases, but the final hydrate amount is the same.
또한, 두 화합물 C12A7과 C11A7ㆍCaF2의 수화반응에서 CaSO4 및 Ca(OH)2의 존재하에 있다면은 칼슘알루미네이트 대신 에트링자이트(ettringite : 3CaOㆍAl2O3ㆍ3CaSO4ㆍ32H2O) 결정을 생성시킬 수 있다.Also, in the presence of CaSO 4 and Ca (OH) 2 in the hydration reaction of two compounds C 12 A 7 and C 11 A 7 .CaF 2 , ettringite (3CaO.Al 2 O 3 ) is used instead of calcium aluminate. 3CaSO 4 32H 2 O) Crystals can be produced.
한편, 상기 결정상의 최종수화물인 C3AH6(3CaOㆍAl2O3ㆍ6H2O)는 구조적으로 염해와 화학저항성이 향상될 수 있도록 낮은 다공률을 형성하여 수밀성을 유도하고, 이는 동결융해저항성에 대해서도 우수한 특성을 부여한다.On the other hand, C 3 AH 6 (3CaO.Al 2 O 3 .6H 2 O), the final hydrate of the crystalline phase, forms a low porosity in order to structurally improve salt and chemical resistance, and induces water-tightness. Excellent properties are also given to resistance.
상기 고로수쇄슬래그는 일반적으로 시멘트 치환 재료로 내염해성, 내화학성, 수화열 저감 등의 특성부여를 위해 사용되며, 단독으로 경화하지 않으나 외부의 자극에 의해 수화 반응하는 잠재 수경성 재료로 알려져 있다. 특히, 본 발명의 조성물에서 고로수쇄슬래그와 탄산나트륨의 반응은 구조체의 균열 및 모세관 기공에 탄산칼슘의 결정을 생성시켜 물의 침투나 유해물질의 침투를 방해하게 된다.The blast furnace chain slag is generally used for imparting salt resistance, chemical resistance, reduction of heat of hydration, etc. as a cement-substituted material, and is known as a latent hydraulic material that does not cure alone but hydrates by external stimulation. In particular, the reaction between the blast furnace slag and sodium carbonate in the composition of the present invention generates crystals of calcium carbonate in the cracks and capillary pores of the structure to interfere with the penetration of water or harmful substances.
상기 재유화형 폴리머 분말은 물의 증발에 의하여 응고되고 필름을 형성하는 재료로써 유연하며 높은 인장강도, 접착강도 등의 특징을 가지고 있으며, 무기질 시멘트 재료의 단점을 보완하여 높은 접착력 및 우수한 표면 내구성을 가지는 마감재를 만들 수 있다.The re-emulsified polymer powder is a material which solidifies by evaporation of water and forms a film. It is flexible and has high tensile strength and adhesive strength, and complements the disadvantages of the inorganic cement material and has a high adhesive strength and excellent surface durability. Can make
상기 벤토나이트는 물이나 습기를 흡수하여 점착력 증대 및 팽윤특성을 나타내며, 누수된 물속의 여러 화합물과 반응하여 결정을 성장시키는 역할을 한다. 균열저감 및 방수성 등의 효과적인 기능을 하기위해 적절한 첨가가 이루어져야 하며, 과도한 사용은 시멘트, 슬래그 등의 결정을 생성시키는 다른 성분들의 반응을 저해 하는 작용을 할 수도 있다.The bentonite absorbs water or moisture, exhibits increased adhesion and swelling properties, and serves to grow crystals by reacting with various compounds in leaked water. Appropriate additions must be made in order to function effectively such as crack reduction and waterproofing, and excessive use may inhibit the reaction of other components that produce crystals such as cement and slag.
이하 본 발명의 실시예 및 비교예에 대해 상세히 설명하면 다음과 같다.Hereinafter, examples and comparative examples of the present invention will be described in detail.
실시예 1Example 1
시멘트 30중량%, 규사 또는 석회석 미분말 34중량%, 레이들 슬래그와 고로수쇄슬래그가 혼합된 분말 첨가제 24중량%, 무수석고 2중량%, 에틸렌 비닐 아세테이트 폴리머 분말 5중량%, 벤토나이트 분말 3중량%, 탄산나트륨 1중량%를 포함하고 고성능유동화제 0.5중량%, 소포제 0.5중량%로 이루어진 표면보호용 마감재 조성물에 대하여 부착강도, 내잔갈림성, 내충격성, 물흡수계수, 습기투과성 시험을 실시하였으며, 그 시험결과를 표 1에 나타내었다.30% by weight cement, 34% by weight silica or limestone fine powder, 24% by weight powder additive mixed with ladle slag and blast furnace slag, 2% by weight anhydrous gypsum, 5% by weight ethylene vinyl acetate polymer powder, 3% by weight bentonite powder, Adhesion strength, creep resistance, impact resistance, water absorption coefficient, and moisture permeability test were carried out on the surface protection finish composition including 1 wt% of sodium carbonate, 0.5 wt% of a high-performance fluidizing agent, and 0.5 wt% of an antifoaming agent. Is shown in Table 1.
상기 조성물에 대한 부착강도 측정은 KS F 4716에서 규정하는 방법으로 모르타르 시험용 밑판에 시료를 2㎜ 두께로 평탄하게 마무리 성형한 후 항온 항습장치에서 14일간 양생하여 측정한다.Measurement of the adhesion strength to the composition is measured by curing in a constant temperature and humidity device for 14 days after forming a flat finish 2mm thick sample on the mortar test base plate by the method specified in KS F 4716.
또한, 온랭 반복 작용에 대한 저항성을 확인 후 부착강도를 측정하며, 온랭 반복 작용은 10회 반복시행하여 표면의 갈라짐, 부풂 등의 결함을 육안으로 관찰하는 것이다.In addition, the adhesion strength is measured after checking resistance to the repeated cold action, and the repeated cold action is repeated 10 times to observe defects such as cracking and swelling of the surface with the naked eye.
내잔갈림성 및 내충격성 시험은 250x250x2㎜ 크기의 시험체를 평탄하게 마무리 성형하고 재령 7일에 잔갈림 유ㆍ무를 확인하며, 잔갈림 시험이 끝난 시편을 높이 50㎝에서 구형추를 떨어뜨려 잔갈림 및 벗겨짐 유ㆍ무를 확인하여 나타낸다.The cracking resistance and impact resistance test is to form a 250x250x2 ㎜ size of the specimen flat finish and check for the presence or absence of cracking at 7 days of age, and drop the spherical weight from the 50cm height of the specimen after the cracking test. It is confirmed by the presence or absence of peeling.
또한, 물흡수 계수와 습기 투과성 시험을 KS F 4716에서 규정하는 방법에 의해 시험체를 제작하여 측정한 후 결과값을 구한다.In addition, the water absorption coefficient and the moisture permeability test is made by measuring the test specimen by the method specified in KS F 4716, and the resultant value is obtained.
비교예 1Comparative Example 1
시멘트 50중량%, 규사 또는 석회석 미분말 42중량%, 에틸렌 비닐 아세테이트 폴리머 분말 3중량%, 벤토나이트 분말 3중량%, 탄산나트륨 1중량%를 포함하고 고성능유동화제 0.5중량%, 소포제 0.5중량%로 이루어진 표면보호용 마감재 조성물에 대하여 부착강도, 내잔갈림성, 내충격성, 물흡수계수, 습기투과성 시험을 실시하였으며, 그 시험결과를 표 1에 나타내었다.50% by weight of cement, 42% by weight of fine silica or limestone powder, 3% by weight of ethylene vinyl acetate polymer powder, 3% by weight of bentonite powder, 1% by weight of sodium carbonate, 0.5% by weight of high performance fluidizing agent, 0.5% by weight of antifoaming agent Adhesion strength, creep resistance, impact resistance, water absorption coefficient, and moisture permeability test were performed on the finish composition, and the test results are shown in Table 1.
비교예 2Comparative Example 2
시멘트 30중량%, 규사 또는 석회석 미분말 40중량%, 고로수쇄슬래그 25중량%, 벤토나이트 분말 3중량%, 탄산나트륨 1중량%를 포함하고 고성능유동화제 0.5중량%, 소포제 0.5중량%로 이루어진 표면보호용 마감재 조성물에 대하여 부착강도, 내잔갈림성, 내충격성, 물흡수계수, 습기투과성 시험을 실시하였으며, 그 시험결과를 표 1에 나타내었다.30% by weight of cement, 40% by weight of fine silica or limestone powder, 25% by weight of blast furnace slag, 3% by weight of bentonite powder, 1% by weight of sodium carbonate, 0.5% by weight of high performance fluidizing agent, 0.5% by weight of antifoaming agent The bond strength, crevice resistance, impact resistance, water absorption coefficient, and moisture permeability were tested for the test results, and the test results are shown in Table 1.
실시예 2Example 2
시멘트 20중량%, 규사 또는 석회석 미분말 32중량%, 레이들 슬래그와 고로수쇄슬래그가 혼합된 분말 첨가제 34중량%, 무수석고 2중량%, 에틸렌 비닐 아세테이 트 폴리머 분말 3중량%, 벤토나이트 분말 6중량%, 탄산나트륨 2중량%를 포함하고 고성능유동화제 0.5중량%, 소포제 0.5중량%로 이루어진 표면보호용 마감재 조성물에 대하여 부착강도, 내잔갈림성, 내충격성, 물흡수계수, 습기투과성 시험을 실시하였으며, 그 시험결과를 표 1에 나타내었다.20% by weight cement, 32% by weight silica or limestone fine powder, 34% by weight powder additive mixed with ladle slag and blast furnace chain slag, 2% by weight anhydrous gypsum, 3% by weight ethylene vinyl acetate polymer powder, 6% by weight bentonite powder Adhesion strength, creep resistance, impact resistance, water absorption coefficient, and moisture permeability test were carried out on the surface protection finish composition comprising%, 2% by weight of sodium carbonate, 0.5% by weight of a high performance fluidizing agent, and 0.5% by weight of an antifoaming agent. The test results are shown in Table 1.
상기와 같이 본 발명의 콘크리트 구조물의 표면보호용 마감재는 표 1에 나타난 바와 같이 레이들 슬래그의 결정성장 반응에 의해 침상형 결정의 생성으로 내잔갈림성, 내충격성, 온랭 반복 작용에 대한 저항성의 내구성 향상과 더불어 재유화형 분말수지, 소포제, 유동화제 등 첨가제에 의해 부착성, 물흡수계수, 습기투과성 등 전반적인 물성에 효과적인 것을 알 수 있다.As described above, the surface protection finish of the concrete structure of the present invention, as shown in Table 1, by the growth of the ladle slag to produce needle-like crystals to improve the durability of the resistance to cracking, impact resistance, and cold repeated action In addition, it can be seen that the additives such as reemulsifying powder resin, antifoaming agent and fluidizing agent are effective for overall physical properties such as adhesion, water absorption coefficient and moisture permeability.
도 1은 레이들 슬래그의 결정성장 반응성에 대한 주사전자현미경(SEM) 및 에너지분광분석기(EDS) 분석결과.1 is a scanning electron microscope (SEM) and energy spectroscopy (EDS) analysis of the crystal growth reactivity of the ladle slag.
도 2는 레이들 슬래그와 무수석고가 혼합된 상태에서 수화반응으로 생성되는 수화물을 시간경과에 따라 엑스선 회절 분석(XRD)한 결과.Figure 2 is a result of X-ray diffraction analysis (XRD) of the hydrate produced by the hydration reaction in a state in which the ladle slag and anhydrous gypsum mixed with time.
도 3은 배합에 따른 색상변화를 도시한 것으로 시멘트, 슬래그, 규사, 석회석 미분말의 변화에 의해 표면색상의 밝기가 변화한 결과.Figure 3 shows the color change according to the blending results of the change in the brightness of the surface color by the change of cement, slag, silica sand, limestone fine powder.
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