KR950010810B1 - Composition of concrete - Google Patents

Composition of concrete Download PDF

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KR950010810B1
KR950010810B1 KR1019920023683A KR920023683A KR950010810B1 KR 950010810 B1 KR950010810 B1 KR 950010810B1 KR 1019920023683 A KR1019920023683 A KR 1019920023683A KR 920023683 A KR920023683 A KR 920023683A KR 950010810 B1 KR950010810 B1 KR 950010810B1
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concrete
composition
pts
parts
finish
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KR1019920023683A
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Korean (ko)
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KR940014244A (en
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곽범일
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곽범일
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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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
    • C04B2103/44—Thickening, gelling or viscosity increasing agents
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
    • C04B2103/50—Defoamers, air detrainers
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
    • C04B2103/54—Pigments; Dyes
    • 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
    • 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
    • C04B2111/60—Flooring materials
    • 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
    • C04B2111/80—Optical properties, e.g. transparency or reflexibility
    • C04B2111/82—Coloured materials

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Floor Finish (AREA)
  • Paints Or Removers (AREA)

Abstract

The finishing material composition for a concrete floor is composed of 25-35 wt.pts(parts) cement, 35-55 wt.pts(parts) sand, 0.1-0.2 wt.pts(parts) methylcellulose thickening agent, 0.1 wt.pts(parts) silicone antifoaming agent, 3 wt.pts(parts) chromium oxide pigment, 3-8 wt.pts(parts) amorphous silica and 15-25 wt.pts(parts) cationic acryl emulsion. The finishing material composition has a strong adhesivity to the concrete surface, and a good antistripping property from the floor.

Description

콘크리트 바닥 마감재 조성물Concrete Floor Finishing Composition

본 발명은 시멘트 콘크리트 바닥면에 시공되는 바닥 마감재 조성물에 관계되는 것으로서, 특히 공지의 바닥 마감재 조성물에 무정형 실리카와 양이온성 아크릴에말죤을 배합하여서된 콘크리트 바닥 마감재에 관한 것이다.The present invention relates to a floor finishing composition to be applied to a cement concrete floor, and more particularly to a concrete floor finishing by mixing amorphous silica with a cationic acrylic emulsion in a known floor finishing composition.

건물 바닥, 주차장 바닥등 시멘트 콘크리트로 시공된 건축물의 바닥면은 기계적으로 연마하여 평활하게 처리하거나 또는 마감재를 도포하여 평활하게 처리하고 있다.Floor surfaces of buildings constructed of cement concrete, such as building floors and parking lot floors, are mechanically polished and smoothed or coated with finishing materials.

종래에는 콘크리트 바닥면에 처리하는 마감재로서 에폭시수지, 우레탄수지, 비닐수지등을 주제로하는 합성수지 도료형 마감재를 주로 사용하여 왔다. 이러한 합성수지 도료형 마감재는 그 자체가 갖고 있는 접착 특성에 의하여 콘크리트 바닥면에 단순히 접착된 상태만을 유지하고 있다. 그런데 시멘트 콘크리트는 시간이 경과함에 따라 시멘트 중에 함유되어 있는 알카리성 성분들이 바닥표면으로 용출되어 바닥 마감재의 접착력을 약화 시키게 되고 마감재의 접착력이 약화되면 콘크리트와 합성수지 마감재의 열팽창계수 차이에 의하여 마감재가 콘크리트 바닥면으로부터 박리되는 현상이 나타났다. 특히 콘크리트는 완전 양생되어 건조된 후에도 내부 기공에 일부의 수분이 남아있게 되는바, 이와 같이 수분이 함유된 콘크리트의 바닥 표면에 합성수지계 마감재를 도포하면 주위 온도가 상승하였을때 콘크리트 내부 기공에 함유된 수분이 외부로 배출되지 못하고 콘크리트 표면에 마감재 접착면에 작용하게 되어 마감재의 접착력 열화현상을 촉진하는 결과를 가져왔다.Conventionally, as a finishing material to be treated on the concrete floor surface has been mainly used synthetic resin paint-like finishing materials such as epoxy resin, urethane resin, vinyl resin. The synthetic resin paint finish keeps only the state of being simply adhered to the concrete floor by the adhesive properties it has. However, in cement concrete, as the time passes, the alkaline components in the cement are eluted to the floor surface, which weakens the adhesive strength of the floor finishing material. The phenomenon of peeling from the surface appeared. Particularly, some concrete remains in the pores even after the concrete is completely cured and dried. Thus, if a synthetic resin finish is applied to the floor surface of the concrete containing water, Moisture is not discharged to the outside and acting on the adhesive surface of the finish on the concrete surface has resulted in promoting the degradation of the adhesive strength of the finish.

일본 공개특허공보 소60-251160호에는 시멘트, 석고, 중합체에말죤, 골재 및 물로 조성된 몰타르 조성물이 공개되었는바, 이 조성물은 시멘트 성분중의 알루미네이트와 석고에 의하여 침상 결정의 에트린 가이트가 생성되므로서 몰타르의 수축에 의한 크랙크 발생이 적게 나타나도록 되었다. 그러나 이 조성물은 고가의 석고를 사용하여야 하는 문제점이 있다.Japanese Laid-Open Patent Publication No. 60-251160 discloses a mortar composition composed of cement, gypsum, polymer emerald, aggregate and water, wherein the composition is formed of acetonitrile of needle crystals by aluminate and gypsum in cement. As a result, crack generation due to shrinkage of the mortar is less likely to occur. However, this composition has a problem of using expensive gypsum.

그리고 한국 공개 특허 공보 92-650호에는 시멘트, 골재, 시멘트 혼화제, 유동화제, 중점제, 소포제 및 표면화제를 함유하는 자기 평활성 하지재 조성물이 기재되었다.And Korean Laid-Open Patent Publication No. 92-650 discloses a self-smooth base material composition containing cement, aggregate, cement admixture, fluidizing agent, medium agent, antifoaming agent and surface agent.

전술한 선행기술에 따르면 몰타르 조성물을 형성함에 있어서, 석고를 배합하거나 소포제, 중점제등을 배합하여 조성물을 형성하는 방법이 알려져 있으나 이러한 방법에서는 무정형 실리카를 배합하여 침상 결정의 규산칼슘이 형성되도록 하므로서 도장층의 강도를 향상시키과 동시에 부착력이 향상되도록 하는 방법에 대하여는 기재되지 않았다.According to the above-mentioned prior art, in forming a mortar composition, a method of forming a composition by mixing gypsum or an antifoaming agent, a medium agent, and the like is known, but in such a method, amorphous silica is mixed to form needle-shaped calcium silicates. It is not described how to improve the strength of the coating layer and at the same time improve the adhesion.

특히 최근에는 콘크리트 표면이 음이온성을 띠고 있어서 합성수직계 마감재와는 이질화 현상을 가져오므로 합성수지계 마감재의 접착력 약화 현상이 콘크리트 표면의 음이온성에 기인하는 것으로 알려졌다.In particular, in recent years, the concrete surface is anionic, so that it is heterogeneous with the synthetic vertical finish, so that the weakening of the adhesive strength of the synthetic finish is due to the anion of the concrete surface.

본 발명의 목적은 전술한 종래 합성수지 도료계 마감재의 문제점을 개선하여 종래의 몰타르 조성물에 무정형 실리카와 양이온성 아크릴 애말죤을 첨가하므로 콘크리트 표면에 입체적으로 결합되면서 장기간 사용하여도 박리현상이 나타나지 아니하는 콘크리트 바닥 마감재를 제공하는 것이다.It is an object of the present invention to improve the problems of the conventional synthetic resin paint finish described above by adding amorphous silica and cationic acrylic amalzone to the conventional mortar composition does not appear peeling phenomenon even when used for a long time while three-dimensionally bonded to the concrete surface To provide a concrete floor finish.

전술한 본 발명의 목적은 시멘트, 모래 및 합성수지 에말죤으로 구성되는 콘크리트 바닥 마감재에 무정형 실리카를 배합하고 합성수지 에말죤이 양이온성 아크릴계 에말죤으로 이루어진 본 발명의 콘크리트 바닥 마감재에 의하여 달성된다.The object of the present invention described above is achieved by the concrete floor finish of the present invention in which amorphous silica is blended into a concrete floor finish composed of cement, sand and a synthetic resin emulsion, and the synthetic resin emulsion is a cationic acrylic emulsion.

본 발명은 시멘트 25-35중량%와 모래 35-55중량% 및 중점제, 소포제, 안료등의 기타 첨가제를 포함하는 시멘트에 몰타르에 무정형 실리카 3-8중량% 및 양이온성 아크릴 에말죤 15-25%을 배합하여서 된 콘크리트 바닥 마감재로 구성된다.The present invention relates to cements containing 25-35% by weight of cement and 35-55% by weight of sand and other additives such as thickeners, antifoams, pigments, etc. Consists of concrete floor finishes blended with%.

본 발명에 사용되는 무정형 실리카는 콘크리트 표면의 수산화 칼슘과 반응하여 침상 결정의 규산 칼슘을 생성하는바, 이때 반응하는 수산화칼슘을 표면층 속에 있는 것도 무정형 실리카와 반응하게 되므로 침상으로 생성되는 규산칼슘이 콘크리트층 표면과 마감재의 표면 사이에 침투하여 입체적인 결합이 일어나도록 한다. 본 발명의 마감재 조성물에 사용되는 무정형 실리카는 전체 조성물 중량을 기준으로 3~8%를 사용한다. 만약 무정형 실리카이 사용량이 3% 이하인 경우에는 생성되는 규산칼슘이 적게되어 콘크리트 표면과, 마감재 사이의 입체적인 결합이 불 환전하게 일어나므로 마감재와 콘크리트 표면간의 접착력이 약하게 되고 무정형 실리카를 8% 이상 사용하면 접착력은 강화 되지만 작업성이 좋지 않고 마감재 표면 평활성이 나쁘게 되는 경우가 있다.The amorphous silica used in the present invention reacts with calcium hydroxide on the concrete surface to produce calcium silicate of acicular crystals, in which case the calcium hydroxide reacts with amorphous silica in the surface layer, so the calcium silicate produced by acicular bed It penetrates between the surface and the surface of the finish to allow three-dimensional bonding to occur. The amorphous silica used in the finish composition of the present invention uses 3-8% by weight of the total composition. If the amount of amorphous silica is less than 3%, the amount of calcium silicate produced is less and the three-dimensional bonding between the concrete surface and the finishing material is unchanged. Therefore, the adhesion between the finishing material and the concrete surface becomes weak. May be hardened, but the workability is poor and the surface finish of the finish is poor.

본 발명의 마감재 조성물에 사용하는 양이온 아크릴 에말죤은 마감재 자체의 점착력을 향상 시킴과 동시에 콘크리트 표면에 음이온성을 중화시켜 이온적으로 안정화 시키므로서 콘크리트 표면의 마감재 사이에 이질화 현상을 방지하는 역할을 한다. 이 양이온성 아크릴 에말죤은 조성물 전체 중량을 기준으로 15-20%를 사용한다. 양이온성 아크릴 에말죤의 사용량이 15% 이하로 되면 전체 조성물의 유동성이 불량하여 작업성이 나쁘게 되고 마감재 자체의 점착력이 약하여 처리후의 마감재층이 균열되는 경우가 있으며 25% 이상 사용하는 경우에는 생산비의 인상 요인이 됨은 물론이고 마감재층의 강도가 약하고 건조시간이 오래 걸리는 문제점이 나타날 수 있다.The cationic acrylic emalone used in the finishing composition of the present invention improves the adhesion of the finishing material itself and at the same time neutralizes the anionicity on the concrete surface, thereby stabilizing ionically, thereby preventing the heterogeneous phenomenon between the finishing materials on the concrete surface. . This cationic acrylic emalon uses 15-20% based on the total weight of the composition. If the amount of the cationic acrylic emulsion is less than 15%, the fluidity of the whole composition is poor, the workability is poor, and the adhesion of the finishing material itself is weak, so that the finishing material layer after the treatment may be cracked. Of course, there may be a problem that the strength of the finish layer is weak and takes a long time to dry as well as an increase factor.

전술한 무정형 실리카와 양이온성 아크릴 에말죤은 단독으로 사용하여도 전술한 효과를 얻을 수 있으나 이들 두 성분은 동시에 사용하면 무정형 실리카와 콘크리트 표면에 수산화칼슘간의 반응에 의하여 침상 규산칼슘이 생성될때 양이온 아크릴 에말죤이 침상 구조 사이에 침투되어 보다 강력한 접착력을 나타내게 된다.The above-mentioned amorphous silica and cationic acrylic emalone can be obtained by using the above alone, but when these two components are used at the same time, when acicular calcium silicate is produced by the reaction between amorphous silica and calcium hydroxide on the concrete surface, The Marzon penetrates between the needle-like structures, resulting in a stronger bond.

본 발명의 마감재 조성물에 있어서, 전술한 무정형 실리카와 양이온성 아크릴 에말죤은 조성물 전체 중량을 기준으로 25-35%의 시멘트와 모래 35-55%로된 시멘트 몰타르에 혼합하는바, 시멘트의 사용량과 모래의 사용량은 마감재의 경도와 관계되므로 시멘트와 모래의 중량비가 1 : 1 내지 1 : 2.2의 비율로 되게 사용하는 것이 좋다.In the finishing composition of the present invention, the above-mentioned amorphous silica and cationic acrylic emalone are mixed with 25-35% cement and 35-55% cement mortar based on the total weight of the composition. Since the amount of sand used is related to the hardness of the finishing material, it is recommended to use a weight ratio of cement to sand in a ratio of 1: 1 to 1: 2.2.

또한 본 발명의 바닥재 조성물은 기타의 첨가제로서 메틸셀룰로우스계 중점제 0.1-0.2%와 실리콘계 소표제 0.1% 정도를 포함할 수 있다.In addition, the flooring composition of the present invention may include about 0.1-0.2% of methylcellulose-based midpoint and about 0.1% of silicone-based subheading as other additives.

본 발명에 의한 마감재 조성물은 조성 성분중에 시멘트와 모래가 다량 함유되어 있어서 콘크리트와 유사한 통기성을 나타내므로 콘크리트 조직내에 수분이 함유되어 있어도 마감재의 접착력에 영향을 미치지 않는다. 그리고 콘크리트와 마감재의 열팽창계수도 유사하여 온도 변화에 따른 신축율이 유사하므로 주의 온도 변화에 의한 마감재의 박리 현상이 일어나지 않게 된다.The finishing composition according to the present invention contains a large amount of cement and sand in the composition, and thus exhibits a breathability similar to that of concrete, and thus does not affect the adhesion of the finishing material even if moisture is contained in the concrete structure. In addition, the coefficient of thermal expansion of the concrete and the finish is similar, and the expansion and contraction rate of the concrete is similar, so that the delamination of the finish due to the change of temperature does not occur.

전술한 본 발명의 마감재 조성물은 콘크리트 바닥에 0.5-2mm 두께로 도포하는바, 필요에 따라서는 표면에 아크릴 보호 피막층을 형성할 수도 있다.The finish composition of the present invention described above is applied to the concrete floor in a thickness of 0.5-2mm, if necessary, may form an acrylic protective film layer on the surface.

이하 본 발명을 실시예에 의하여 구체적으로 설명하는바, 실시예 중의 부는 중량부를 나타낸다.Hereinafter, the present invention will be described in detail by way of examples, in which parts in the examples represent parts by weight.

[실시예 ]EXAMPLE

다음의 표의 성분들을 그 중량비대로 배합하여 마감재 조성물을 만든다. 제조된 마감재 조성물은 길이 20Cm, 폭 10Cm, 두께 2Cm의 콘크리트판 표면에 1mm의 두께로 되도록 도포하였다.The ingredients in the following table are combined in their weight ratios to form a finish composition. The prepared finish composition was applied to a thickness of 1 mm on the surface of the concrete plate 20 cm long, 10 cm wide, 2 cm thick.

Claims (1)

시멘트 25-35%, 모래 35-55%, 아크릴 에말죤 15-25%, 물 및 기타 첨가제를 포함하는 콘크리트 바닥 마감재 조성물에 있어서, 이 조성물의 무정형 실리카를 전체 조성물 중량 기준으로 3-8% 포함하고 아크릴 에말죤이 양이온성 아크릴 에말죤임을 특징으로 하는 마감재 조성물.Concrete floor finish compositions comprising 25-35% cement, 35-55% sand, 15-25% acrylic emalon, water and other additives, comprising 3-8% amorphous silica of the composition by weight of the total composition And the acrylic emulsion is a cationic acrylic emulsion.
KR1019920023683A 1992-12-09 1992-12-09 Composition of concrete KR950010810B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ302237B6 (en) * 2008-10-21 2011-01-05 Cs-Beton S.R.O. Device for mutually connecting two parts of road barrier and method of connecting these parts with each another

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Publication number Priority date Publication date Assignee Title
KR100549045B1 (en) * 2002-09-25 2006-02-02 노윤근 Materials for preventing salification and neutralization of concrete and Method for repairing of using its materials

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ302237B6 (en) * 2008-10-21 2011-01-05 Cs-Beton S.R.O. Device for mutually connecting two parts of road barrier and method of connecting these parts with each another

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