KR102174754B1 - Concrete mortar composition including fiber reinforcements and construction finishing method using the same - Google Patents
Concrete mortar composition including fiber reinforcements and construction finishing method using the same Download PDFInfo
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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
- C04B18/141—Slags
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
- C04B14/38—Fibrous materials; Whiskers
- C04B14/42—Glass
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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
- C04B18/146—Silica fume
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/04—Carboxylic acids; Salts, anhydrides or esters thereof
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- 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
- C04B24/243—Phosphorus-containing polymers
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/24—Macromolecular compounds
- C04B24/26—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C04B24/2623—Polyvinylalcohols; Polyvinylacetates
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/24—Macromolecular compounds
- C04B24/26—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C04B24/2641—Polyacrylates; Polymethacrylates
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
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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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/4596—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with fibrous materials or whiskers
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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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/4598—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with waste 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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5076—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with masses bonded by inorganic cements
- C04B41/5079—Portland cements
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
Description
본 발명은 섬유보강재를 포함하는 콘크리트 모르타르 조성물 및 그를 사용하는 구조물 마감 공법에 관한 것이다. The present invention relates to a concrete mortar composition comprising a fiber reinforcement and a structural finishing method using the same.
일반적으로, 콘크리트 구조물의 내구성에 영향을 미치는 인자로서 재료조건, 구조물의 용도, 외기 환경조건 등이 있으며, 이중 외기 환경조건으로서는 콘크리트 구조물이 접하게 되는 수분에 의한 건습 반복, 염분의 침투에 의한 염해, 이산화탄소등의 침투로 인한 콘크리트의 중성화, 외기 온도의 심한 변화로 인한 동결융해 및 각종 산 등의 침식에 의한 화학적 침식 등이 있다. 또한, 자연 재해 중에서 지진은 콘크리트 구조물의 내구성을 위협하는 환경적 인자이다. In general, as factors affecting the durability of concrete structures, there are material conditions, use of the structure, and outdoor environmental conditions. Among them, the outdoor environmental conditions are repeated dry and humid due to moisture encountered by the concrete structure, salt damage due to penetration of salt, There are neutralization of concrete due to penetration of carbon dioxide, freezing and thawing due to severe changes in outside temperature, and chemical erosion due to erosion of various acids. In addition, among natural disasters, earthquakes are environmental factors that threaten the durability of concrete structures.
상기와 같은 원인으로 발생하는 콘크리트 구조물에서 균열, 누수, 철근부식, 박리, 박락 등의 현상이 발생한다. 즉, 수분이나 기타 외부 유해 물질 등이 콘크리트 내부로 침투하여 콘크리트 자체를 열화 시키거나, 철근의 부식 등을 유발하여 콘크리트 구조물의 성능저하를 일으키며, 지진은 콘크리트 구조물에 심각한 균열을 발생시킨다.Phenomenon such as cracking, leakage, corrosion of reinforcing bars, delamination, and flaking occur in the concrete structure caused by the above causes. In other words, moisture or other external harmful substances penetrate into the concrete and deteriorate the concrete itself, or cause corrosion of reinforcing bars, leading to deterioration of the performance of the concrete structure, and earthquakes cause serious cracks in the concrete structure.
상기와 같은 콘크리트 구조물의 열화를 방지하기 위해서는 구조물의 외부 마감에 의해, 수분 및 외부 유해물질 등의 침투를 방지하는 것이 필요하다. In order to prevent the deterioration of the concrete structure as described above, it is necessary to prevent penetration of moisture and external harmful substances, etc. by the exterior finish of the structure.
그러나 기존에 외부 마감에 사용되고 있는 콘크리트 모르타드 조성물은 콘크리트 구조물 등의 마감 대상 구조물에 대한 접착력이 부족하고, 얇은 두께로 시공되는 이유로 쉽게 균열이 발행하는 단점을 갖는 것으로 알려져 있다.However, it is known that the existing concrete mortar composition used for exterior finishing lacks adhesion to structures to be finished, such as concrete structures, and is easily cracked because it is constructed with a thin thickness.
상기와 같은 문제를 해소하기 위하여 섬유보강재를 혼합한 콘크리트 모르타르 조성물이 소개되고 있다. 그러나, 상기 섬유보강재는 시멘트 등의 결합재 잘 결합되지 않고, 혼합과정에서 뭉침이 빈번히 발생하므로 효율적으로 사용하기 어렵다는 단점을 갖는다. In order to solve the above problems, a concrete mortar composition in which a fiber reinforcement is mixed has been introduced. However, the fiber reinforcement has a disadvantage in that it is difficult to use efficiently since it is not well bonded to a binder such as cement, and agglomeration occurs frequently during the mixing process.
그러므로, 섬유보강재의 뭉침 현상을 방지하고, 시멘트 등의 결합재와 견고한 결합을 형성하게 하며, 마감 대상 구조물에 대한 결합력을 향상시키는 방법이 모색되고 있다. Therefore, a method of preventing the agglomeration of the fiber reinforcement material, forming a solid bond with a bonding material such as cement, and improving the bonding strength to the structure to be finished is being sought.
본 발명은, 종래기술의 상기와 같은 단점을 해결하기 위하여 안출된 것으로서,The present invention, as conceived to solve the above disadvantages of the prior art,
섬유보강재가 뭉침 없이 균일하게 분산되며, 마감 대상 구조물에 대한 접착력이 우수하며, 단열성, 항곰팡이성, 결로방지성, 방음성, 및 내구성이 향상된 콘크리트 모르타르 조성물을 제공하는 것을 목적으로 한다.It is an object of the present invention to provide a concrete mortar composition in which the fiber reinforcement is uniformly dispersed without clumping, has excellent adhesion to the structure to be finished, and has improved insulation, anti-fungal properties, condensation prevention, sound insulation, and durability.
또한, 상기 콘크리트 모르타르 조성물을 사용하는 효율적인 구조물 마감 공법을 제공하는 것을 목적으로 한다. In addition, it is an object of the present invention to provide an efficient structure finishing method using the concrete mortar composition.
본 발명은, 상기 목적을 달성하기 위하여, The present invention, in order to achieve the above object,
시멘트 9~20 중량%; 골재 50~80 중량%; 고로슬래그 미분말 4~7 중량%; 아크릴 개질 에멀젼 1∼8 중량%; 폴리비닐아세테이트 1~10 중량%; 하기 화학식 1로 표시되는 고분자 화합물 1~10 중량%; 실리카 흄 0.1~8 중량%; 폴리카르복실산계 유동화제 0.1~5 중량%; 섬유보강재 0.5~5.0 중량%; 및 불소계 4급 알킬암모늄염 0.1~5 중량%를 포함하는 콘크리트 모르타르 조성물을 제공한다:9-20% by weight of cement; 50-80% by weight of aggregate; Blast furnace slag fine powder 4-7% by weight; 1 to 8% by weight of acrylic modified emulsion; 1 to 10% by weight of polyvinyl acetate; 1 to 10% by weight of a polymer compound represented by the following formula (1); 0.1-8% by weight of silica fume; 0.1 to 5% by weight of a polycarboxylic acid fluidizing agent; 0.5 to 5.0% by weight of fiber reinforcement; And it provides a concrete mortar composition comprising 0.1 to 5% by weight of a fluorine-based quaternary alkyl ammonium salt:
[화학식 1] [Formula 1]
상기 식에서, R1 및 R2는 수소 또는 메틸기이며, In the above formula, R1 and R2 are hydrogen or methyl groups,
a 및 b는 몰분율로서 a는 0.3~0.7이며, b는 0.3~0.7이며, a+b=1이다.a and b are mole fractions, a is 0.3 to 0.7, b is 0.3 to 0.7, and a+b=1.
또한, 본 발명은In addition, the present invention
(a) 본 발명의 콘크리트 모르타르 조성물을 물과 혼합하여 슬러리 상태로 혼합하는 단계; (a) mixing the concrete mortar composition of the present invention with water and mixing in a slurry state;
(b) 상기 슬러리 상태의 콘크리트 모르타르 조성물을 마감 대상 구조물의 표면에 도포하는 단계; 및(b) applying the slurry concrete mortar composition to the surface of the structure to be finished; And
(c) 양생단계;를 포함하는 구조물에 대한 콘크리트 모르타르 마감 공법을 제공한다.(c) Curing step; provides concrete mortar finishing method for structures including.
본 발명의 섬유보강재를 포함하는 콘크리트 모르타르 조성물은 섬유보강재가 뭉침 없이 균일하게 분산되며 결합재와 우수한 결합을 형성하므로 구조물 마감시 우수한 내구성을 제공하며, 우수한 단열성, 항곰팡이성, 결로방지성, 및 방음성을 제공한다.The concrete mortar composition containing the fiber reinforcement of the present invention is uniformly dispersed without agglomeration of the fiber reinforcement and forms an excellent bond with the binder, so it provides excellent durability when finishing the structure, and has excellent insulation, anti-mold property, condensation prevention, and sound insulation. Provides.
또한, 본 발명의 섬유보강재를 포함하는 콘크리트 모르타르 조성물은 폴리머 성분을 포함함으로써 마감 대상 구조물에 우수한 접착력을 제공한다. In addition, the concrete mortar composition comprising the fiber reinforcement of the present invention provides excellent adhesion to the structure to be finished by including a polymer component.
이하에서 본 발명에 대하여 자세히 설명한다.Hereinafter, the present invention will be described in detail.
본 발명은 시멘트 9~20 중량%; 골재 50~80 중량%; 고로슬래그 미분말 4~7 중량%; 아크릴 개질 에멀젼 1∼8 중량%; 폴리비닐아세테이트 1~10 중량%; 하기 화학식 1로 표시되는 고분자 화합물 1~10 중량%; 실리카 흄 0.1~8 중량%; 폴리카르복실산계 유동화제 0.1~5 중량%; 섬유보강재 0.5~5.0 중량%; 및 불소계 4급 알킬암모늄염 0.1~5 중량%를 포함하는 콘크리트 모르타르 조성물에 관한 것이다:The present invention is 9 to 20% by weight of cement; 50-80% by weight of aggregate; Blast furnace slag fine powder 4-7% by weight; 1 to 8% by weight of acrylic modified emulsion; 1 to 10% by weight of polyvinyl acetate; 1 to 10% by weight of a polymer compound represented by the following formula (1); 0.1-8% by weight of silica fume; 0.1 to 5% by weight of a polycarboxylic acid fluidizing agent; 0.5 to 5.0% by weight of fiber reinforcement; And it relates to a concrete mortar composition comprising 0.1 to 5% by weight of a fluorine-based quaternary alkyl ammonium salt:
[화학식 1] [Formula 1]
상기 식에서, R1 및 R2는 수소 또는 메틸기이며, In the above formula, R1 and R2 are hydrogen or methyl groups,
a, b 및 c는 몰분율로서 a는 0.3~0.7이며, b는 0.3~0.7이며 및 c는 0.1~0.5이며, a+b=1이다.a, b and c are mole fractions, a is 0.3 to 0.7, b is 0.3 to 0.7, and c is 0.1 to 0.5, and a+b=1.
본 발명의 일 실시 형태에 있어서, 상기 시멘트는 포틀랜트 시멘트, 슬래그 시멘트, 알루미나 시멘트 및 초속경 시멘트 중에서 선택된 1종 또는 2종 이상의 혼합 시멘트일 수 있다. 상기 시멘트들은 시중에서 구입하여 사용할 수 있다. In one embodiment of the present invention, the cement may be one or two or more mixed cements selected from portland cement, slag cement, alumina cement, and ultrafast cement. These cements can be purchased and used on the market.
본 발명의 일 실시 형태에 있어서, 상기 골재로는 일반적으로 콘크리트용으로 알려진 것을 사용할 수 있으며, 잔골재와 굵은 골재로 이루어질 수 있다. 잔골재로는 KS F 2526 규격에 준하는 입경 0.15 내지 5.0mm, 절대건조밀도 2.5g/㎤ 이상, 흡수율 3%이하, 안정성 10%이하인 것을 사용할 수 있다.In one embodiment of the present invention, the aggregate may be generally known for concrete, and may be made of fine aggregate and coarse aggregate. As fine aggregates, those having a particle diameter of 0.15 to 5.0 mm, an absolute dry density of 2.5 g/cm 3 or more, an absorption rate of 3% or less, and a stability of 10% or less according to the KS F 2526 standard may be used.
굵은 골재로는 KS F 2526 규격에 준하는 입경 2.5 내지 25mm, 절대조건밀도 2.5g/㎤이상, 흡수율 3%이하, 안정성 10%이하, 마모율 40% 이하인 것을 사용할 수 있다.As the coarse aggregate, those having a particle diameter of 2.5 to 25 mm, an absolute condition density of 2.5 g/cm 3 or more, an absorption rate of 3% or less, a stability of 10% or less, and a wear rate of 40% or less according to KS F 2526 standard can be used.
본 발명에 있어 잔골재는 골재 총 중량에 대하여 40∼100 중량%로 사용될 수 있으며, 굵은 골재는 골재 총 중량에 대하여 0 내지 60 중량%로 포함될 수 있다. In the present invention, fine aggregate may be used in an amount of 40 to 100% by weight based on the total weight of the aggregate, and coarse aggregate may be included in an amount of 0 to 60% by weight based on the total weight of the aggregate.
본 발명의 일 실시 형태에 있어서, 상기 고로슬래그 미분말은 제철산업의 용광로에서 발생하는 부산물을 의미한다. 고로슬래그 미분말을 사용하는 것은 폐부산물을 재활용하는 것이므로 환경적으로 도움이 되며 경제성도 개선하는 장점이 있다. 점이 있다.In one embodiment of the present invention, the blast furnace slag fine powder refers to a by-product generated in a blast furnace of the steel industry. The use of blast furnace slag powder is to recycle waste by-products, so it is environmentally beneficial and has the advantage of improving economic efficiency. There is a point.
상기 고로슬래그 미분말은 예를 들어, 이산화규소(SiO2) 30~40 중량%; 산화알루미늄(Al2O3) 10~15 중량%; 삼산화황(SO3) 0.5~1.5 중량%; 산화마그네슘(MgO) 4~4.5 중량%; 산화칼슘(CaO) 40~48 중량%; 산화망간(MnO) 0.1~0.5 중량%; 산화철(Fe2O3) 0.01~0.2 중량%; 이산화티타늄(TiO2) 0.5~ 1 중량%; 알칼리(Na2O, K2O) 0.2~0.6 중량%;를 포함할 수 있다. .The blast furnace slag fine powder is, for example, silicon dioxide (SiO2) 30 to 40% by weight; 10 to 15% by weight of aluminum oxide (Al2O3); 0.5 to 1.5% by weight of sulfur trioxide (SO3); 4 to 4.5% by weight of magnesium oxide (MgO); 40 to 48% by weight of calcium oxide (CaO); Manganese oxide (MnO) 0.1 to 0.5% by weight; Iron oxide (Fe2O3) 0.01 to 0.2% by weight; 0.5 to 1% by weight of titanium dioxide (TiO2); Alkali (Na2O, K2O) 0.2 to 0.6% by weight; may contain. .
특히, 본 발명에서는 분말도가 3,500~4,500cm2/g인 고로슬래그를 사용하는 것이 콘크리트 모르타르 조성물의 결합력 및 내구성 측면에서 바람직하다.In particular, in the present invention, it is preferable in terms of bonding strength and durability of the concrete mortar composition to use blast furnace slag having a powderiness of 3,500 to 4,500 cm 2 /g.
본 발명의 일 실시 형태에 있어서, 상기 아크릴 개질 에멀젼은 콘크리트의 점도 저하 및 접착 성능 개선을 위하여 사용하는 것으로, 아크릴 수지, 부틸아크릴레이트 및 라텍스를 혼합한 것이다. 아크릴 개질 에멀젼으로 라텍스만을 사용할 경우에는 콘크리트의 점도가 증가되어 마무리 작업 시 콘크리트가 작업도구에 부착되는 현상이 발생하므로, 이를 방지하기 위하여 아크릴 수지를 혼합한다. 또한, 아크릴 수지는 경화되기가 쉬우며, 작업성이 나빠지고, 경질화될 수 있으므로, 연성화하고 작업성을 개선하기 위하여 부틸 아크릴레이트도 함께 사용한다. 아크릴 수지, 부틸 아크릴레이트 및 라텍스가 혼합된 아크릴 개질 에멀젼을 사용하는 경우, 콘크리트가 경화되는 시간을 연장시킴으로써 타설된 콘크리트의 표면을 매끄럽게 하는 마무리 작업 시간을 충분히 확보할 수 있어서 작업성의 향상 및 콘크리트 모르타르의 강도, 접착력 내구성이 향상되는 효과가 제공된다. 작업성 향상, 가사 시간 확보, 강도 증진 등을 위하여 아크릴 수지, 부틸 아크릴레이트 및 라텍스를 일정비율로 혼입함으로써 콘크리트를 타설 후, 콘크리트의 표면을 매끄럽게 하는 마무리 작업을 할 경우 콘크리트가 작업 도구에 부착되는 문제를 해결함과 동시에 적당한 가사 시간을 유지하여 작업성을 크게 개선할 수 있다. 상기 아크릴 개질 에멀젼은 점도, 작업성, 경화성, 연화 정도 등을 고려하여 아크릴 수지 40∼60 중량%, 라텍스 20∼40 중량% 및 부틸 아크릴레이트 10∼20 중량%를 함유하는 것이 바람직하다. 상기 라텍스는 스티렌-부타디엔 고무(styrene-butadiene rubber; SBR)로 이루어진 것을 사용할 수 있다.In one embodiment of the present invention, the acrylic modified emulsion is used to reduce the viscosity of concrete and improve adhesion performance, and is a mixture of acrylic resin, butyl acrylate, and latex. When only latex is used as an acrylic modified emulsion, the viscosity of the concrete increases and the concrete adheres to the work tool during finishing. Therefore, acrylic resin is mixed to prevent this. In addition, since the acrylic resin is easy to cure, poor workability, and hardening, butyl acrylate is also used to soften and improve workability. In the case of using an acrylic modified emulsion containing acrylic resin, butyl acrylate and latex, it is possible to secure enough finishing time to smooth the surface of the poured concrete by extending the time for the concrete to cure, improving workability and concrete mortar. The effect of improving the strength and durability of the adhesion is provided. In order to improve workability, secure pot life, and increase strength, acrylic resin, butyl acrylate, and latex are mixed in a certain ratio to ensure that concrete is adhered to the work tool after pouring concrete and finishing work to smooth the surface of concrete. Workability can be greatly improved by solving problems and maintaining adequate pot life. The acrylic modified emulsion preferably contains 40 to 60% by weight of acrylic resin, 20 to 40% by weight of latex, and 10 to 20% by weight of butyl acrylate in consideration of viscosity, workability, curability, and degree of softening. The latex may be made of styrene-butadiene rubber (SBR).
아크릴 개질 에멀젼은 콘크리트 모르타르 조성물 총 중량에 대하여 1∼8 중량% 함유되는 것이 바람직하다. 아크릴 개질 에멀젼의 함량이 너무 많을 경우에는 점도가 낮아지며, 취성이 강해짐과 동시에 성형성이 떨어지고, 수화반응을 지연시켜 초기 압축강도(3∼4시간) 발현을 저하시키며 제품 가격이 높아져서 경제적이지 못하다. 상기 아크릴 개질 에멀젼의 함량이 너무 작을 경우에는 점도가 높아져서 작업성(슬럼프)이 떨어진다. 아크릴 개질 에멀젼에 아크릴 수지 및 부틸 아크릴레이트가 함유되면 콘크리트의 수축이 저하되고 수밀성이 향상되는 효과가 제공된다. The acrylic modified emulsion is preferably contained in an amount of 1 to 8% by weight based on the total weight of the concrete mortar composition. If the content of the acrylic modified emulsion is too high, the viscosity decreases, the brittleness increases, the moldability decreases, the hydration reaction is delayed to reduce the initial compressive strength (3-4 hours) expression, and the product price increases, which is not economical. When the content of the acrylic modified emulsion is too small, the viscosity increases and the workability (slump) decreases. When acrylic resin and butyl acrylate are contained in the acrylic modified emulsion, the shrinkage of concrete is reduced and the watertightness is improved.
상기 아크릴 수지로는 중량평균분자량 100,000 내지 300,000의 폴리메타크릴산메틸 수지가 사용될 수 있다.As the acrylic resin, a polymethyl methacrylate resin having a weight average molecular weight of 100,000 to 300,000 may be used.
본 발명의 일 실시 형태에 있어서, 상기 폴리비닐아세테이트는 모르타르 성분 간 상용성, 부착성을 증대시켜서 모르타르의 물성을 향상시키는 역할을 한다. 상기 폴리비닐아세트에트는 조성물 총 중량에 대하여 1~10 중량%로 포함되며, 상기 범위를 벗어나는 경우에는 목적 효과를 얻기 어렵거나, 단가가 상승되어 경제성이 저하되는 단점이 발생한다. 본 발명에서 상기 폴리비닐아세테이트는 중량평균분자량이 50,000 내지 100,000인 것이 바람직하게 사용될 수 있다.In one embodiment of the present invention, the polyvinyl acetate serves to improve the physical properties of the mortar by increasing the compatibility and adhesion between the mortar components. The polyvinylacetate is included in an amount of 1 to 10% by weight based on the total weight of the composition, and if it is out of the above range, it is difficult to obtain the desired effect, or the cost is increased, resulting in a disadvantage of lowering economic efficiency. In the present invention, the polyvinyl acetate may preferably have a weight average molecular weight of 50,000 to 100,000.
본 발명의 콘크리트 모르타르 조성물은 섬유보강재의 분산도를 높이고, 모르타르 조성물의 접착력을 높이기 위하여 하기 화학식 1로 표시되는 고분자 화합물 1~10 중량%을 포함한다.The concrete mortar composition of the present invention contains 1 to 10% by weight of a polymer compound represented by the following Formula 1 in order to increase the degree of dispersion of the fiber reinforcement and increase the adhesion of the mortar composition.
[화학식 1] [Formula 1]
상기 식에서, R1 및 R2는 수소 또는 메틸기이며, In the above formula, R1 and R2 are hydrogen or methyl groups,
a, b 및 c는 몰분율로서 a는 0.3~0.7이며, b는 0.3~0.7이며 및 c는 0.1~0.5이며, a+b=1이다.a, b and c are mole fractions, a is 0.3 to 0.7, b is 0.3 to 0.7, and c is 0.1 to 0.5, and a+b=1.
상기 화학식 1로 표시되는 고분자 화합물은 포스페이트기 및 카테콜기를 포함하는 것을 특징으로 한다. 상기 포스페이트기는 섬유보강재의 분산성을 개선하는 효과를 제공하며, 모르타르 조성물의 경화도를 향상시킨다. 카테콜기는 모르타르 조성물의 마감 대상 구조물에 대한 접착력을 향상시킨다.The polymer compound represented by Formula 1 is characterized in that it contains a phosphate group and a catechol group. The phosphate group provides an effect of improving the dispersibility of the fiber reinforcement and improves the degree of hardening of the mortar composition. The catechol group improves the adhesion of the mortar composition to the structure to be finished.
상기 화학식 1로 표시되는 공중합체는 중량평균분자량은 50,000 내지 3000,000인 것이 사용될 수 있으며, 더욱 바람직하게는 70,000 내지 150,000인 것이 사용될 수 있다.The copolymer represented by Formula 1 may have a weight average molecular weight of 50,000 to 3000,000, and more preferably 70,000 to 150,000.
본 발명의 콘크리트 모르타르 조성물은 실리카 흄 0.1~8 중량%를 포함한다. 상기 실리카 흄(Silica fume)은 평균 입경 0.1~0.5 mm 정도로 이루어진 완전 구형에 가까운 입자로서 비정질의 활성 실리카이며, 아래의 화학식에서와 같이 수산화칼슘과 반응하여 상온에서 함수 규산 칼슘으로 변화함으로써 수퍼 포졸란 성질을 띤다.The concrete mortar composition of the present invention contains 0.1 to 8% by weight of silica fume. The silica fume (Silica fume) is an amorphous active silica as a particle close to a perfectly spherical shape having an average particle diameter of about 0.1 to 0.5 mm, and reacts with calcium hydroxide as in the following formula to change to hydrated calcium silicate at room temperature, thereby improving super pozzolan properties. It takes.
3CaOSiO2 + H2O → C-S-H(시멘트겔) + Ca(OH)2 3CaOSiO 2 + H 2 O → CSH (cement gel) + Ca(OH) 2
상기 실리카 흄은 구상 입자에 의한 볼 베어링 효과로 분산성 및 감수 효과를 향상시키고 시멘트 입자 사이에 실리카 흄의 충전 효과로 수밀성 향상 및 고강도화, 그리고 숏크리트의 부착성 향상으로 그라운드량 감소, 알칼리 실리카 반응 억제 및 화학적 저항성 향상 등의 효과를 제공한다. The silica fume improves dispersibility and water-reduction effect by ball bearing effect by spherical particles, improves water tightness and strength by filling effect of silica fume between cement particles, and reduces ground amount by improving adhesion of shotcrete and suppresses alkali silica reaction And it provides effects such as improvement in chemical resistance.
본 발명의 콘크리트 모르타르 조성물은 폴리카르복실산계 유동화제 0.1~5 중량%를 포함한다. 상기 폴리카르복실산계 유동화제로는 이 분야에 공지된 성분이 제한 없이 사용될 수 있다.The concrete mortar composition of the present invention contains 0.1 to 5% by weight of a polycarboxylic acid-based fluidizing agent. As the polycarboxylic acid-based fluidizing agent, components known in the art may be used without limitation.
본 발명의 콘크리트 모르타르 조성물은 섬유보강재를 0.5~5.0 중량%로 포함한다. 상기 섬유보강재로는 유리섬유, 강섬유, 폴리에스테르 섬유, 나일론 섬유, 폴리프로필렌(PP) 섬유, 셀룰로오스 섬유 및 폴리에틸렌 섬유 중에서 선택되는 1종 이상이 사용될 수 있다. The concrete mortar composition of the present invention contains 0.5 to 5.0% by weight of fiber reinforcement. As the fiber reinforcement, at least one selected from glass fiber, steel fiber, polyester fiber, nylon fiber, polypropylene (PP) fiber, cellulose fiber, and polyethylene fiber may be used.
특히, 상기 섬유보강재로는 나일론 섬유가 바람직하게 사용될 수 있다. In particular, nylon fibers may be preferably used as the fiber reinforcement.
상기 나일론 섬유는 하기와 같은 구조식을 갖는다.The nylon fiber has the following structural formula.
따라서, 물과 혼합되는 경우, 하기 화학식으로 나타낸 바와 같이, 물과 상호작용을 통하여 우수한 분산성을 제공한다.Therefore, when mixed with water, it provides excellent dispersibility through interaction with water, as represented by the following formula.
상기 나일론 섬유로는 예를 들어, 나이콘소재㈜에서 제조한 상품명 "나이콘화이버"가 사용될 수 있다.As the nylon fiber, for example, a brand name "Nikon Fiber" manufactured by Nicon Materials Co., Ltd. may be used.
본 발명의 모르타르 조성물은 불소계 4급 알킬암모늄염 0.1~5 중량%를 포함한다.The mortar composition of the present invention contains 0.1 to 5% by weight of a fluorine-based quaternary alkyl ammonium salt.
상기 불소계 4급 알킬암모늄염은 하기 화학식 2로 표시될 수 있다.The fluorine-based quaternary alkyl ammonium salt may be represented by the following formula (2).
[화학식 2][Formula 2]
상기 식중, R1, R2, R3 및 R4는 각각 독립적으로 탄소수 1 내지 4의 알킬기이고, X는 불소함유 음이온이다. 상기 X는 PF6 -, BF4 -, AsF6 -, SbF6 - 등일 수 있다. In the above formula, R 1 , R 2 , R 3 and R 4 are each independently an alkyl group having 1 to 4 carbon atoms, and X is a fluorine-containing anion. Wherein X is PF 6 -, BF 4 -, AsF 6 -, SbF 6 - and the like.
상기 화학식 1로 표시되는 불소계 4급 알킬암모늄염은 섬유보강재의 분산성을 향상시키는 기능을 수행한다. 즉, 상기 불소계 4급 알킬암모늄염은 섬유보강재 주변에서 섬유보강재 간의 분산성을 개산하는 기능을 수행한다.The fluorine-based quaternary alkyl ammonium salt represented by Formula 1 functions to improve the dispersibility of the fiber reinforcement. That is, the fluorine-based quaternary alkyl ammonium salt performs a function of estimating the dispersibility between the fiber reinforcements around the fiber reinforcement.
상기 상기 불소계 4급 알킬암모늄염의 양이온으로는 테트라메틸암모늄, 테트라에틸암모늄, 테트라프로필암모늄, 테트라부틸암모늄, 테트라펜틸암모늄 등을 들 수 있다. Examples of the cation of the fluorine-based quaternary alkyl ammonium salt include tetramethylammonium, tetraethylammonium, tetrapropylammonium, tetrabutylammonium, and tetrapentylammonium.
본 발명의 일 실시 형태에 있어서, 상기 콘크리트 모르타르 조성물은 리튬메톡사이드 0.1~5 중량%를 더 포함할 수 있다. In one embodiment of the present invention, the concrete mortar composition may further contain 0.1 to 5% by weight of lithium methoxide.
상기 리튬메톡사이드는 예를 들어, 나이론 섬유 보강재와 반응하여, 나이론 섬유의 질소원자에 리튬이온이 이온결합을 형성하게 함으로써 섬유보강재의 분산성을 향상시킨다. 이 때, 리튬메톡사이드에서 분리된 메톡사이드기는 수소와 결합하여 메탄올을 형성하며, 양생과정에서 증발되어 제거된다. 또한 리튬이온은 모르타르 조성물의 항균성을 향상시키는 기능도 수행한다.The lithium methoxide reacts with, for example, a nylon fiber reinforcing material to allow lithium ions to form ionic bonds in nitrogen atoms of the nylon fiber, thereby improving the dispersibility of the fiber reinforcing material. At this time, the methoxide group separated from lithium methoxide combines with hydrogen to form methanol, and is evaporated and removed during curing. In addition, lithium ions also perform a function of improving the antibacterial properties of the mortar composition.
본 발명의 모르타르 조성물은 조성물 총 중량에대하여 폴리도파민 1~10 중량%를 더 포함할 수 있다. 신경전달물질로 잘 알려져 있는 도파민(dopamine)은 바다 속 홍합류(Mussels)에서 발견되는 3,4-dihydroxy-L-phenylalanine (L-DOPA) 분자의 모방 분자이다. 특히 도파민의 산화제-유도 자체고분자화(oxidant-induced self-polymerization)와 전기화학적 고분자화 반응(electrochemical polymerization)들에 의해 생성된 폴리도파민은 공유결합(covalent bond) 카테콜(catechol)과 이민(imine) 작용기를 가지고 있어 생체물질, 합성고분자 등의 유기질뿐만 아니라 콘크리트 구조물 등의 고체 표면들에서도 아주 강한 결합을 형성한다.The mortar composition of the present invention may further include 1 to 10% by weight of polydopamine based on the total weight of the composition. Dopamine, well known as a neurotransmitter, is a molecule that mimics the 3,4-dihydroxy-L-phenylalanine (L-DOPA) molecule found in marine mussels. In particular, polydopamine produced by oxidant-induced self-polymerization and electrochemical polymerizations of dopamine are covalent bonds, catechol and imine. ) As it has functional groups, it forms very strong bonds not only on organic materials such as biological materials and synthetic polymers, but also on solid surfaces such as concrete structures.
그러므로, 상기 폴리도파민은 모르타르 조성물이 마감 대상 구조물에 더욱 강한 결합을 하게 하는 기능을 수행한다. Therefore, the polydopamine performs a function of making the mortar composition stronger bond to the structure to be finished.
상기 폴리도파민은 하기와 같은 공지의 방법으로 제조될 수 있으며, 중량평균분자량이 50,000 내지 200,000인 것이 사용될 수 있다.The polydopamine may be prepared by a known method as follows, and those having a weight average molecular weight of 50,000 to 200,000 may be used.
본 발명의 모르타르 조성물은 수축 방지제로서 네오펜틸글리콜(Neopentyl glycol) 0.1 내지 2 중량%를 더 포함할 수 있다. 상기 네오펜틸글리콜은 대칭형의 2개의 알코올 기와 알파 카본 위치에 2개의 메틸기를 가지고 있어 에스테르화 반응에 탁월한 반응성을 나타낸다. 본 발명에서 상기 네오펜틸글리콜은 백색 결정체 100%로 이루어진 플레이크(flake) 형태 또는 네오펜틸글리콜 90% 및 물 10%로 이루어진 슬러리(slurry) 형태로 사용될 수 있다.The mortar composition of the present invention may further contain 0.1 to 2% by weight of neopentyl glycol as a shrinkage inhibitor. The neopentyl glycol has two symmetrical alcohol groups and two methyl groups at the alpha carbon position, and thus exhibits excellent reactivity in the esterification reaction. In the present invention, the neopentyl glycol may be used in the form of a flake made of 100% white crystals or a slurry made of 90% neopentyl glycol and 10% water.
본 발명의 모르타르 조성물은 모르타르 내의 거대 기공을 제거하여 모르타르의 강도와 외관을 좋게 하기 위하여 0.1 내지 2 중량%의 소포제를 더 포함할 수 있다. The mortar composition of the present invention may further contain 0.1 to 2% by weight of an antifoaming agent in order to improve the strength and appearance of the mortar by removing macropores in the mortar.
상기 충전재로서 10㎛ 이하의 입자 크기를 가지며, SiO2가 95 중량% 이상 포함된 석영질 분말 0.1 내지 2 중량% 및 CaCO3이 75 중량% 이상 포함된 석회석 미분말 0.1 내지 2 중량%를 더 포함할 수 있다. It has a particle size of 10 μm or less as the filler, and further comprises 0.1 to 2% by weight of a quartz powder containing at least 95% by weight of SiO 2 and 0.1 to 2% by weight of a fine limestone powder containing at least 75% by weight of CaCO 3 I can.
본 발명의 일 실시 형태에 있어서, 상기 콘크리트 모르타르 조성물은 방음, 단열, 결로방지 및 곰팡이 방지가 요구되는 구조물의 마감처리에 사용될 수 있다. In one embodiment of the present invention, the concrete mortar composition may be used for the finishing treatment of structures requiring sound insulation, heat insulation, prevention of condensation and prevention of mold.
상기 구조물은 예를 들어, 아파트, 음악실, 영화관, 스튜디오, 학교, 체육관 등 방음이 요구되는 건축물의 벽체, 천정, 바닥 등일 수 있으며, 주택, 냉장, 냉동창고, 공장 등의 건축물 및 냉, 난방 기계설비, 덕트 등일 수 있다. The structure may be, for example, walls, ceilings, floors, etc. of buildings requiring sound insulation, such as apartments, music rooms, movie theaters, studios, schools, and gymnasiums, and buildings such as houses, refrigeration, freezing warehouses, factories, etc., and cooling and heating machines. It may be a facility, a duct, etc.
본 발명은 또한,The present invention also,
(a) 본 발명의 콘크리트 모르타르 조성물을 물과 혼합하여 슬러리 상태로 혼합하는 단계; (a) mixing the concrete mortar composition of the present invention with water and mixing in a slurry state;
(b) 상기 슬러리 상태의 콘크리트 모르타르 조성물을 마감 대상 구조물의 표면에 도포하는 단계; 및(b) applying the slurry concrete mortar composition to the surface of the structure to be finished; And
(c) 양생단계;를 포함하는 구조물에 대한 콘크리트 모르타르 마감 공법에 관한 것이다.It relates to the concrete mortar finishing method for structures including (c) curing step.
상기 마감 공법에 사용되는 시공방법은 이 분야에 공지된 방법에 의해 실시될 수 있다. The construction method used in the finishing method may be carried out by a method known in the art.
상기 단계에서 물은 콘크리트 조성물 100 중량부에 대하여, 총 중량에 대하여 20 내지 60 중량부로 혼합될 수 있다. 물의 혼합비율은 시공 장소, 환경 등에 따라 적절히 조절될 수 있다.In the above step, water may be mixed in an amount of 20 to 60 parts by weight based on the total weight, based on 100 parts by weight of the concrete composition. The mixing ratio of water can be appropriately adjusted according to the construction location and environment.
이하에서, 실시예를 통하여 본 발명을 보다 상세히 설명한다. 그러나, 하기의 실시예는 본 발명을 더욱 구체적으로 설명하기 위한 것으로서, 본 발명의 범위가 하기의 실시예에 의하여 한정되는 것은 아니다. 하기의 실시예는 본 발명의 범위 내에서 당업자에 의해 적절히 수정, 변경될 수 있다. Hereinafter, the present invention will be described in more detail through examples. However, the following examples are for explaining the present invention more specifically, and the scope of the present invention is not limited by the following examples. The following examples can be appropriately modified and changed by those skilled in the art within the scope of the present invention.
제조예 1: 화학식 1의 고분자 화합물의 합성 Preparation Example 1: Synthesis of a polymer compound of Formula 1
2-(메타크릴로일옥시)에틸 포스페이트(2-(Methacryloyloxy)ethyl phosphate) 단량체 및 도파민 메타크릴아마이드(dopamine methacrylamide)를 1:1의 몰비로 첨가하고, 전체 단량체 100 중량부에 노르말 머캡탄 0.5 중량부를 혼합하여 균일하게 만들었다. 교반기가 부착된 스테인레스 스틸 고압 반응기에 이온교환수 130 중량부에 소량의 디소듐하이드로겐 포스페이트를 용해시키고 교반하며, 질소 등의 불활성 기체로 반응기 내부를 채우고 가열하였다. 72 ℃에서 3시간, 110℃에서 2시간을 중합하여 반응을 종결하였다. 반응이 종결된 후 세척, 탈수, 건조하여 중량평균분자량이 125,000인 화학식 1의 고분자 화합물을 얻었다. 2- (methacryloyloxy) ethyl phosphate (2- (Methacryloyloxy) ethyl phosphate) monomer and dopamine methacrylamide (dopamine methacrylamide) were added in a molar ratio of 1:1, and normal mercaptan 0.5 to 100 parts by weight of the total monomer It was made uniform by mixing parts by weight. A small amount of disodium hydrogen phosphate was dissolved and stirred in 130 parts by weight of ion-exchanged water in a stainless steel high pressure reactor equipped with a stirrer, and the inside of the reactor was filled with an inert gas such as nitrogen and heated. The reaction was terminated by polymerization for 3 hours at 72°C and 2 hours at 110°C. After the reaction was terminated, washing, dehydration, and drying were performed to obtain a polymer compound of Formula 1 having a weight average molecular weight of 125,000.
[화학식 1][Formula 1]
상기 식에서, R1 및 R2는 메틸기이고, a는 0.5 및 b는 0.5이다(a와 b는 몰비이며, a+b=1이다)In the above formula, R1 and R2 are methyl groups, a is 0.5 and b is 0.5 (a and b are molar ratios, a+b=1)
실시예 1~4 및 비교예 1: 섬유보강재를 포함하는 콘크리트 모르타르의 제조Examples 1 to 4 and Comparative Example 1: Preparation of concrete mortar containing fiber reinforcement
하기 표 1의 성분을 해당 조성비로 혼합하고, 조성물 100 중량부에 대하여 물 10 중량부를 혼합하여 실시예 및 비교예의 모르타르 조성물을 제조하였다.The components of Table 1 were mixed at the corresponding composition ratio, and 10 parts by weight of water were mixed with respect to 100 parts by weight of the composition to prepare mortar compositions of Examples and Comparative Examples.
주) 첨가제: 네오펜틸글리콜(Neopentyl glycol), 소포제, 석영질 분말, 및 석회석 미분말 1:1:1:1(중량비) Note) Additives: Neopentyl glycol, antifoam, quartz powder, and limestone fine powder 1:1:1:1 (weight ratio)
시험예: 성능 평가Test Example: Performance evaluation
1) 모르타르 조성물의 물성 측정1) Measurement of physical properties of mortar composition
상기 실시예 및 비교에서 제조된 모르타르를 이용하여 시험체를 제조하여 하기 시험 방법에 의해 물성을 측정하였다.A test specimen was prepared using the mortar prepared in the above Examples and Comparative Examples, and physical properties were measured by the following test method.
(1) 흡수율, 플로우, 슬러리 밀도: KS L 5220에 준하여 실시(1) Water absorption rate, flow, and slurry density: conducted in accordance with KS L 5220
(2) 휨강도: KS F 2476「폴리머 시멘트 모르타르의 강도시험 방법」(2) Flexural strength: KS F 2476 「Strength test method of polymer cement mortar」
(3) 압축강도: KSF 2405(3) Compressive strength: KSF 2405
(4) 부착강도: KS F 4716 「폴리머 시멘트 모르타르의 강도시험 방법」(4) Bond strength: KS F 4716 「Strength test method of polymer cement mortar」
(5) 길이변화율: KS F 2424 모르타르 및 콘크리트의 길이 변화 시험 방법에 따라 측정하였다. 그 값은 초기 시공체의 값을 0으로 하여, “-”는 수축율을 나타내는 것이며, “+”는 팽창율을 나타낸다.(5) Length change rate: It was measured according to KS F 2424 mortar and concrete length change test method. As for the value, the value of the initial construction body is set to 0, and “-” indicates the shrinkage rate, and “+” indicates the expansion rate.
상기 시험 결과를 하기 표 2에 나타내었다.The test results are shown in Table 2 below.
상기 표 2에 나타난 바와 같이, 본 발명의 콘크리트 모르타르 조성물은 섬유보강재가 뭉침없이 분산되고, 각 구성성분간 및 모르타르와 구조물 간의 결합을 강하게 하는 성분을 포함함으로써, 전체적인 물성이 비교예보다 매우 우수한 것으로 확인되었다. As shown in Table 2, the concrete mortar composition of the present invention is characterized by having a fiber reinforcement dispersed without agglomeration, and by including a component that strengthens the bonding between the mortar and the structure for each component, so that the overall physical properties are very superior to the comparative example. Confirmed.
Claims (12)
상기에서 고로슬래그 미분말은 이산화규소(SiO2) 30~40 중량%; 산화알루미늄(Al2O3) 10~15 중량%; 삼산화황(SO3) 0.5~1.5 중량%; 산화마그네슘(MgO) 4~4.5 중량%; 산화칼슘(CaO) 40~48 중량%; 산화망간(MnO) 0.1~0.5 중량%; 산화철(Fe2O3) 0.01~0.2 중량%; 이산화티타늄(TiO2) 0.5~1 중량%; 및 알칼리(Na2O, K2O) 0.2~0.6 중량%;를 포함하고, 분말도가 3,500~4,500cm2/g이며,
상기 불소계 4급 알킬암모늄염은 하기 화학식 2로 표시되며,
상기 시멘트는 포틀랜트 시멘트, 슬래그 시멘트, 알루미나 시멘트 및 초속경 시멘트 중에서 선택된 1종 또는 2종 이상의 혼합 시멘트이며,
상기 아크릴 개질 에멀젼은 아크릴 수지 40∼60 중량%, 라텍스 20∼40 중량% 및 부틸 아크릴레이트 10∼20 중량%를 포함하며,
상기 섬유보강재는 나일론 섬유인 콘크리트 모르타르 조성물:
[화학식 1]
상기 식에서, R1 및 R2는 수소 또는 메틸기이며,
a 및 b는 몰분율로서 a는 0.3~0.7이며, b는 0.3~0.7이며, a+b=1이며,
[화학식 2]
상기 식중, R1, R2, R3 및 R4는 각각 독립적으로 탄소수 1 내지 4의 알킬기이고, X는 PF6 -이다.9-20% by weight of cement; 50-80% by weight of aggregate; Blast furnace slag fine powder 4-7% by weight; 1 to 8% by weight of acrylic modified emulsion; Weight average molecular weight of 50,000 to 100,000 1 to 10% by weight of polyvinyl acetate; 1 to 10% by weight of a polymer compound having a weight average molecular weight of 70,000 to 150,000 represented by the following formula (1); 0.1-8% by weight of silica fume; 0.1 to 5% by weight of a polycarboxylic acid fluidizing agent; 0.5 to 5% by weight of fiber reinforcement; 0.1 to 5% by weight of a fluorine-based quaternary alkyl ammonium salt; 0.1 to 2% by weight of neopentyl glycol as an anti-shrink agent; 0.1-2% by weight of antifoam; 0.1-2% by weight of quartz powder; 0.1-2% by weight of fine limestone powder containing more than 75% by weight of CaCO 3 ; 0.1-5% by weight of lithium methoxide; And 1 to 10% by weight of polydopamine having a weight average molecular weight of 50,000 to 200,000; and,
In the above, the blast furnace slag fine powder is silicon dioxide (SiO 2 ) 30 to 40% by weight; Aluminum oxide (Al 2 O 3 ) 10 to 15% by weight; Sulfur trioxide (SO 3 ) 0.5 to 1.5% by weight; Magnesium oxide (MgO) 4 to 4.5% by weight; 40 to 48% by weight of calcium oxide (CaO); Manganese oxide (MnO) 0.1 to 0.5% by weight; Iron oxide (Fe 2 O 3 ) 0.01 to 0.2% by weight; Titanium dioxide (TiO 2 ) 0.5 to 1% by weight; And alkali (Na 2 O, K 2 O) 0.2 ~ 0.6% by weight; including, and the powder degree is 3,500 ~ 4,500cm 2 /g,
The fluorine-based quaternary alkyl ammonium salt is represented by the following formula (2),
The cement is one or two or more mixed cements selected from portland cement, slag cement, alumina cement, and ultrafast cement,
The acrylic modified emulsion contains 40 to 60% by weight of acrylic resin, 20 to 40% by weight of latex, and 10 to 20% by weight of butyl acrylate,
The fiber reinforcement is a nylon fiber concrete mortar composition:
[Formula 1]
In the above formula, R1 and R2 are hydrogen or methyl groups,
a and b are mole fractions, a is 0.3 to 0.7, b is 0.3 to 0.7, a+b=1,
[Formula 2]
In the above formula, R 1 , R 2 , R 3 and R 4 are each independently an alkyl group having 1 to 4 carbon atoms, and X is PF 6 - is.
상기 콘크리트 모르타르 조성물은 방음, 단열, 결로방지 및 곰팡이 방지가 요구되는 구조물의 마감에 사용되는 것을 특징으로 하는 콘크리트 모르타르 조성물.The method of claim 1,
The concrete mortar composition is a concrete mortar composition, characterized in that it is used for the finishing of structures requiring sound insulation, heat insulation, condensation prevention and mold prevention.
(b) 상기 슬러리 상태의 콘크리트 모르타르 조성물을 마감 대상 구조물의 표면에 도포하는 단계; 및
(c) 양생단계;를 포함하는 구조물에 대한 콘크리트 모르타르 마감 공법.(a) mixing the concrete mortar composition of claim 1 with water to form a slurry;
(b) applying the slurry concrete mortar composition to the surface of the structure to be finished; And
(c) curing step; concrete mortar finishing method for the structure including.
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| GB2612697A (en) * | 2021-09-27 | 2023-05-10 | Longcliffe Quarries Ltd | Binder |
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