KR0167094B1 - A self-leveling mortar composition comprising cement and polymers - Google Patents
A self-leveling mortar composition comprising cement and polymers Download PDFInfo
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- KR0167094B1 KR0167094B1 KR1019950048682A KR19950048682A KR0167094B1 KR 0167094 B1 KR0167094 B1 KR 0167094B1 KR 1019950048682 A KR1019950048682 A KR 1019950048682A KR 19950048682 A KR19950048682 A KR 19950048682A KR 0167094 B1 KR0167094 B1 KR 0167094B1
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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
- 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
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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
- C04B28/06—Aluminous 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
- 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
- C04B28/14—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 calcium sulfate cements
- C04B28/16—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 calcium sulfate cements containing anhydrite, e.g. Keene's cement
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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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/40—Surface-active agents, dispersants
- C04B2103/408—Dispersants
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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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/50—Defoamers, air detrainers
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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
- C04B2111/60—Flooring materials
- C04B2111/62—Self-levelling compositions
Abstract
본 발명은 포트랜드시멘트 100 중량부에 대해, 모노칼슘알루미네이트 (CaO·Al2O3) 광물의 함량이 50∼80 중량% 및 게레나이트 광물을 20∼50 중량% 함유한 알루미나 시멘트를 5∼50 중량부, 분말도가 blaine 3,000∼8,000 ㎠/g의 범위로 분쇄, 분급된 무수석고를 5∼50 중량부, 입경 0.3 ㎜ 이상인 입자가 5중량%, 입경 0.1 ㎜ 이하인 입자가 10 중량% 이하로 함유된 골재 100∼200 중량부로 이루어진 4성분계 상 조성물 100 중량부에 대해 ; 2∼10 중량부의 분산제, 보수제 및 소포제로 구성된 혼화제 조성물 ; 5∼50 중량부의 시멘트 혼화용 합성 고무를 디스퍼전한 폴리머를 혼합하여 제조된 합성고분자-시멘트계 자기평탄성 상 조성물에 관한 것이다.The present invention relates to 50 to 80 parts by weight of monocalcium aluminate (CaO.Al 2 O 3 ) minerals and to 5 to 50 alumina cements containing 20 to 50% by weight of gurenade minerals, based on 100 parts by weight of Portland cement. 5 to 50 parts by weight of anhydrous gypsum pulverized and classified in the range of parts by weight of blaine in the range of 3,000 to 8,000 cm 2 / g, 5% by weight of particles having a particle size of 0.3 mm or more, and 10% by weight or less of particles having a particle size of 0.1 mm or less. To 100 parts by weight of a four-component phase composition composed of 100 to 200 parts by weight of aggregate; Admixture composition composed of 2 to 10 parts by weight of a dispersant, a water retainer and an antifoaming agent; The present invention relates to a synthetic polymer-cement-based self-flatting phase composition prepared by mixing a polymer obtained by dispersing 5 to 50 parts by weight of a synthetic rubber for cement admixture.
Description
본 발명은 합성고분자-시멘트계 자기평탄성 상 조성물에 관한 것으로, 더욱 상세하게는 종래의 시멘트계 자기평탄성 상 조성물의 기계적 물성을 획기적으로 향상시키기 위해 시멘트 혼화용 합성고분자를 시멘트계 자기평탄성 상 조성물의 가수혼합물에 첨가하여 제조된 합성고분자-시멘트계 자기평탄성 몰탈 조성물에 관한 것이다.The present invention relates to a synthetic polymer-cement-based self-flat phase composition, and more particularly, to improve the mechanical properties of the conventional cement-based self-flat phase composition, a synthetic polymer for cement mixing is applied to a hydromixture of a cement-based self-flat phase composition. It relates to a synthetic polymer-cement-based self-flat mortar composition prepared by the addition.
일반적으로 대부분의 시멘트계 자기평탄성 상 조성물은 오피스텔, 백화점 등과 같은 상업용 건축물의 바닥미장시 건축물 내부의 데코레이션을 위해 사용되는 고급마감재의 하지조정재(underlayment)로 사용되어 왔기 때문에 내충격성이나 내마모성 등의 물성이 취약한 단점을 갖고 잇다. 이에 대한 시멘트계 자기평탄성 상 조성물에 관하여 대한민국 특허공고 제85-1252호, 특허공개 제92-11951호 및 제94-8510호, 일본국 특허공개 소57-92558호, 동 소58-41746호, 동 소59-35052호 및 동 소60-195046호 등에 게재되어 있다.In general, most cement-based self-leveling phase compositions have been used as the underlayment of high-quality finishes used for decorating interiors of commercial buildings such as officetels, department stores, etc., and thus have excellent properties such as impact resistance and abrasion resistance. It has a weak point. Regarding this cement-based self-flatness composition, Korean Patent Publication Nos. 85-1252, Patent Publication Nos. 92-11951 and 94-8510, Japanese Patent Publication Nos. 57-92558, Japanese Patent Publication No. 58-41746, and It is published in US 59-35052 and US 60-195046.
그러나, 전술한 대한민국 특허공고 제85-1252호, 특허공개 제92-11951호 및 일본국 특허공개 소57-92558호, 동 소60-195046호 등은 주결합재로서 포틀랜드시멘트, 또는 포틀랜드시멘트와 석회석 분말(또는 플라이애쉬, 슬래그분말 등)을 기재로 하여 골재 및 각종 혼화제 등을 미리 혼합시킨 예비혼합형의 시멘트계 자기평탄성(SL) 상 조성물로서, 이의 조성물은 주로 일반 상업용 건축물의 바닥미장에 국한되어 공장이나 지하주차장과 같이 내충격성, 내마모성 등이 요구되는 분야에는 사용이 제한되어 왔다.However, Korean Patent Publication No. 85-1252, Patent Publication No. 92-11951, Japanese Patent Application Laid-Open No. 57-92558, and Japanese Patent Application Laid-Open No. 60-195046 are Portland cement, or Portland cement and limestone as main binders. Pre-mixed cement-based self-leveling (SL) phase composition in which an aggregate and various admixtures are mixed in advance based on powder (or fly ash, slag powder, etc.), the composition of which is mainly limited to floor plastering of a commercial building. However, its use has been limited in areas requiring impact resistance and abrasion resistance, such as underground parking lots.
종래, 이러한 공장이나 주차장 분야에 널리 사용되어온 재료로는 에폭시나 우레탄 등과 같은 레진계 몰탈이 많이 적용되어 왔으나, 대부분 시공 후 바탕면인 콘크리트에서 탈락, 심한 균열이나 파손을 초래하는 경우가 많기 때문에 산업용 공장 바닥의 마감에 큰 장애가 되어왔다. 일반적으로 레진계 몰탈 재료자체의 기계적 물성을 뛰어난 것으로 평가되고 있으나, 레진계 몰탈 제조시 사용되는 골재의 함수상태에 따라 심한 물성의 차이를 나타내고 있어 시공에 큰 주의를 필요로 하고 있다. 이러한 이유 때문에 바탕면인 콘크리트의 표 면함수비가 바닥마감작업시나 시공 후 양생과정에서 증가할 경우, 레진 몰탈과 콘크리트의 계면이 탈락하면서 주변으로 계속 균열이 확산되는 단점을 나타내고 있어, 실제 시공에 임해서는 골재의 수분을 최소화 하기 위해 건조된 규사를 현장에서 혼합하여 사용하고 바탕면의 습윤제거를 위해 전처리 공정에서 부터 습윤제거를위한 인력투입으로 광범위한 면적을 시공함에 있어 공기가 오래 걸릴뿐만 아니라 인력마감에 따른 평탄성의 저하, 고가의 시공비(인건비) 파손부의 보수비용이 추가로 부담되는 큰 문제점을 갖고 있다.Conventionally, resin mortars such as epoxy and urethane have been widely used as materials that are widely used in such factories and parking lots, but most of them are dropped, concrete cracks and breakages from concrete, which are ground surfaces after construction. The finishing of the factory floor has been a major obstacle. In general, the mechanical properties of the resin-based mortar material itself is evaluated as excellent, but it shows a great difference in the physical properties according to the water-containing state of the aggregate used in the production of resin-based mortar, which requires great care in construction. For this reason, when the surface function ratio of concrete, which is the base surface, increases during the floor finishing work or during the curing process after construction, it shows the disadvantage that cracks continue to spread around the interface as the resin mortar and concrete fall off. In order to minimize the moisture of aggregates, dry silica sand is used in the field, and it takes not only a long time for air but also manpower closing in constructing a wide area by manpower injection for wetting removal from the pretreatment process for wetting of the base surface. This has a big problem that the flatness and the cost of repairing expensive construction cost (labor cost) damaged part is additionally burdened.
이에, 본 발명의 목적은 상술한 단점들을 해결하기 위해 보통포틀랜드시멘트, 알루미나시멘트, 무수석고 및 골재를 4성분으로 하는 상 조성물의 주결합재를 제조한 후, 여기에 각종 혼화제 및 합성고분자라텍스를 첨가하면 높은 유동성을 발현시킴으로써 광범위한 면적의 공장이나 지하주차장 바닥 미장시공시 별도의 평탄성 작업을 할 필요없이 간단하게 평탄한 상면이 형성될 뿐만 아니라, 시공 1일 후에 강도가 발현되고, 내충격성, 내마모성 등이 우수하여 차기 연속공정이 가능한 것은 물론, 시공 후 균열이나 바닥과의 들뜸이 전혀 없는 합성고분자-시멘트계 SL 상 조성물을 제공하는 것으로, 즉 포트랜드시멘트 100 중량부에 대해, 모노칼슘알루미네이트(CaO·Al2O3) 광물의 함량이 50∼80 중량% 및 게레나이트(Gehlenite, 2CaO·Al2O3·SiO2) 광물을 20∼50 중량% 함유한 알루미나시멘트를 5∼50 중량부, 분말도가 blaine 3,000∼8,000 ㎠/g의 범위로 분쇄, 분급된 무수석고를 5∼50 중량부, 입경 0.3 ㎜ 이상인 입자가 5중량%, 입경 0.1 ㎜ 이하인 입자가 10 중량% 이하로 함유된 골재 100∼200 중량부로 이루어진 4성분계 상 조성물 100 중량부에 대해 ; 2∼10 중량부의 분산제, 보수제 및 소포제로 구성된 혼화제 조성물 ; 5∼50 중량부의 시멘트 혼화용 합성고무를 분산시킨 폴리머를 혼합하여 제조된 합성고분자-시멘트계 자기평탄성 상 조성물을 제공하는 것이다.Accordingly, an object of the present invention is to prepare the main binder of the phase composition having a four-component portland cement, alumina cement, anhydrous gypsum and aggregate to solve the above-mentioned disadvantages, and then added various admixtures and synthetic polymer latex to it. When the surface of the factory or the underground parking lot is installed in a wide area, it is possible to express high fluidity, so that the flat upper surface is not simply formed, but the strength is expressed after 1 day of construction, and the impact resistance and wear resistance are improved. The present invention provides a synthetic polymer-cement-based SL phase composition which is excellent in that the next continuous process is possible, and there is no cracking or lifting after the construction, that is, monocalcium aluminate (CaOAl) based on 100 parts by weight of Portland cement. 2 O 3 ) Mineral content of 50 to 80% by weight and 20 to 50 minerals of Gerenite (Gehlenite, 2CaO · Al 2 O 3 · SiO 2 ) 5 to 50 parts by weight of alumina cement containing 5% by weight, 5 to 50 parts by weight of anhydrous gypsum pulverized and classified in the range of powder degree of blaine 3,000 to 8,000 cm 2 / g, 5% by weight of particles having a particle diameter of 0.3 mm or more With respect to 100 parts by weight of a four-component phase composition composed of 100 to 200 parts by weight of an aggregate containing 10% by weight or less of particles having 0.1 mm or less; Admixture composition composed of 2 to 10 parts by weight of a dispersant, a water retainer and an antifoaming agent; It is to provide a synthetic polymer-cement-based self-flat phase composition prepared by mixing a polymer in which 5 to 50 parts by weight of the synthetic rubber for cement mixing.
이하 본 발명을 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in detail.
본 발명은 보통포틀랜드시멘트 100 중량부, 알루미나시멘트 5∼50 중량부, 무수석고 5∼50 중량부, 골재 100∼200 중량부로 이루어진 4성분계 상 조성물에, 상기 4성분계 상 조성물 100 중량부에 대해 2∼10 중량부의 혼화제 및 5∼30 중량부의 합성고분자 고무를 디스퍼전화한 폴리머를 첨가한 것을 특징으로 하는 합성 고분자-시멘트계 자기평탄성 상 조성물에 관한 것이다.The present invention is a four-component phase composition consisting of 100 parts by weight of ordinary portland cement, 5 to 50 parts by weight of alumina cement, 5 to 50 parts by weight of anhydrous gypsum, and 100 to 200 parts by weight of aggregates, It relates to a synthetic polymer-cement-based self-planar phase composition characterized by adding a polymer admixed with -10 parts by weight of admixture and 5-30 parts by weight of synthetic polymer rubber.
본 발명에 사용되는 보통포틀랜드시멘트 외에 중용열, 조강 및 초조강포틀랜드시멘트 등이 사용될 수 있으며, 특히 공장이나 주차장 바닥의 미려함을 높히기 위해 별도의 안료를 첨가할 필요가 있을 때에는 백시멘트를 사용해도 좋은데 첨가하는 안료의 색상에 따라 상술한 조성물의 기계적인 물성에 차이가 있으므로 시공성, 경제성 등을 고려하여 선택하는 것이 바람직하다.In addition to the ordinary portland cement used in the present invention, medium heat, crude steel and ultra-tight steel portland cement may be used, and in particular, when it is necessary to add a separate pigment to enhance the beauty of the floor of a factory or a parking lot, a back cement may be used. Since there is a difference in the mechanical properties of the above-described composition according to the color of the pigment to be added, it is preferable to select in consideration of workability, economical efficiency and the like.
상기 알루미나시멘트는 구성광물에 있어 모노칼슘알루미네이트(CaO·Al2O3, 이하 CA로 표 기)의 함량이 50∼80 중량%, 게레나이트(Gehlenite, 2CaO·Al2O3·SiO2, 이하 C2AS로 표 기)의 함량이 20∼60 중량%로 구성된 것을 상기 시멘트 100 중량부에 대해 5∼50 중량부 첨가시키게 되는데, 이 범위내에서 첨가시키면 상기 4성분계의 조성물의 체적변화에 대한 안전성의 확보와 함께 조기에 경화성능을 향상시킬 수 있게 된다. 이때 알루미나시멘트는 시멘트에 대하여 50 중량부 이상이 되면 4성분계의 조성물의 유동성이 급격하게 저하하여 광범위한 면적의 시공이 불가능하게 될 뿐만 아니라 경화단계에서 과도한 체적팽창으로 인한 균열이 발생하게 되며, 시멘트에 대하여 5 중량부 이하가 되면 오히려 심한 수축으로 인한 균열이 발생하기 쉽게 된다.The alumina cement has a content of monocalcium aluminate (CaO · Al 2 O 3 , hereinafter referred to as CA) in the constituent minerals of 50 to 80% by weight, gerenite (Gehlenite, 2CaO · Al 2 O 3 · SiO 2 , 5 to 50 parts by weight based on 100 parts by weight of the cement, which is comprised of 20 to 60% by weight of C2AS, is added. If it is added within this range, it is safe against the volume change of the composition of the four component system. It is possible to improve the curing performance early with securing of. At this time, when the alumina cement is 50 parts by weight or more with respect to the cement, the fluidity of the composition of the four-component system is drastically reduced, making it impossible to construct a wide area, and cracking occurs due to excessive volume expansion in the curing step. If it is less than 5 parts by weight, cracks due to severe shrinkage are more likely to occur.
한편, 무수석고는 전술한 알루미나시멘트의 화학조성 중 Al2O3성분 및 무수석고의 화학조성 중 SO3성분과의 몰비(mole ratio, 이하 A/S비로 표 기)를 기준으로 시멘트 10 중량부에 대하여 5∼50 중량부를 첨가하게 되는데 A/S비가 0.5∼1.5의 범위가 되도록 첨가량을 조정하는 것이 효과적이며, 본 발명에서는 상기 시멘트 및 알루미나시멘트에 첨가되는 무수석고의 분말도를 비표 면적 5,000∼8,500 ㎠/g의 범위로 분쇄·분급하여 첨가하는 것을 특징으로 한다. 이때 첨가되는 무수석고는 알루미나시멘트의 화학조성 중 Al2O3성분 및 무수석고의 화학조성 중 SO3성분과의 몰비인 A/S비가 1.5 이상이 되면 경화체의 과도한 팽창을 유발하며, 0.5 이하가 되면 오히려 수축을 하게 되므로 A/S 몰비를 0.5∼1.5의 범위에 오도록 무수석고의 첨가량을 조절하는 것이 바람직하다.On the other hand, anhydrous gypsum is 10 parts by weight of cement based on the mole ratio (also referred to as A / S ratio) with the Al 2 O 3 component and the SO 3 component in the chemical composition of the above-described alumina cement 5 to 50 parts by weight with respect to the A / S ratio is effective to adjust the amount to be in the range of 0.5 to 1.5, in the present invention, the powder of anhydrous gypsum added to the cement and alumina cement, the specific surface area 5,000 ~ It is characterized in that it is added by grinding and classifying in the range of 8,500 cm 2 / g. At this time, the added anhydrous gypsum causes excessive expansion of the cured product when the A / S ratio, which is the molar ratio between the Al 2 O 3 component and the SO 3 component in the chemical composition of the alumina cement, is 1.5 or more, and 0.5 or less If it is rather shrinkage, it is preferable to adjust the amount of anhydrous gypsum so that the A / S molar ratio is in the range of 0.5 to 1.5.
또한, 골재는 강모래, 규사, 석회석사 및 슬래그사 등 종래의 시멘트 모르터용 미세골재가 사용될 수 있으며, 본 발명에서는 입경 0.3㎜ 이상인 입자를 5 중량% 이하로, 입경 0.1㎜ 이하인 입자를 10 중량% 이하로 함유시켜 단일입도를 갖도록 입도조정된 골재를 시멘트 100 중량부에 대하여 100∼200 중량부 첨가시키는 것이 바람직하다. 만약 입경 0.3㎜ 이상인 입자가 5 중량%를 초과하면 상기 4성분계 단계의 상 조성물의 가수혼합물의 재료의 분리현상이 심화되고, 입경 0.1㎜ 이하의 입자가 10 중량%를 초과하면 슬러리의 유동성, 평탄성 및 복원성 등이 크게 저하된다.In addition, the aggregate may be used for conventional cement mortar fine aggregates, such as steel sand, silica sand, limestone and slag yarn, in the present invention, the particles having a particle size of 0.3mm or more to 5% by weight or less, the particle size of 0.1mm or less 10weight It is preferable to add 100 to 200 parts by weight of the aggregate adjusted to have a single particle size by containing less than or equal to 100 parts by weight of cement. If the particles having a particle diameter of 0.3 mm or more exceed 5 wt%, the separation of the material of the hydrolyzate of the phase composition of the four-component phase is intensified. If the particles having a particle size of 0.1 mm or less exceed 10 wt%, the fluidity and flatness of the slurry And restorability are greatly reduced.
이와 같이 시멘트-알루미나시멘트-무수석고-골재의 구성비를 적절히 배합하여 제조된 4성분계 상 조성물에 상기 혼화제 및 폴리머를 첨가시키면 높은 유동성을 발현하므로써 광범위한 공장이나 지하주차장 바닥 미장시공시 별도의 평탄성 작업을 할 필요없이 간단하게 평탄한 상면이 형성될 뿐만 아니라, 시공 1일 후에 높은 강도가 발현되고, 내충격성, 내마모성 등이 향상되어 종래의 시멘트계 자기평탄성 상 조성물 내지 레진계 몰탈보다 월등히 우수한 상 조성물을 얻을 수 있다.As such, when the admixture and polymer are added to the four-component phase composition prepared by properly mixing the composition ratio of cement-alumina cement-anhydrous gypsum-aggregate, high fluidity is expressed, so that additional flatness is performed when plastering floors of a wide range of factories or underground parking lots. Not only do not need to simply form a flat top surface, but also high strength is expressed after 1 day of construction, and the impact resistance, wear resistance and the like is improved to obtain a phase composition that is superior to the conventional cement-based self-planar phase composition to resin-based mortar have.
즉, 종래의 시멘트계 자기평탄성 상 조성물은 내충격성, 내마모성이 취약하여 공장이나 지하주차장과 같은 분야에 적용하기가 곤란하며, 레진계 몰탈은 바탕면인 콘크리트와의 친화성 저하(즉, 무기계인 콘크리트와 유기계인 레진 몰탈과의 부착성 저하) 때문에 시공 후 바닥면에서 탈락, 들뜸으로 파손, 균열의 전파 등의 문제점을 나타내는 반면, 본 발명에 의해 제조된 조성물로 시공하게 되면 강도, 내마모성, 내충격성 및 균열저항성 등이 우수한 바닥면을 확보할 수 있게 된다.That is, the conventional cement self-leveling phase composition is difficult to be applied to fields such as factories or underground parking lots due to its low impact resistance and abrasion resistance, and resin-based mortar has a lowered affinity with concrete as the base (that is, inorganic concrete). And adhesiveness with organic resin mortar) due to the dropping, lifting and crack propagation at the bottom surface after construction, when applied to the composition prepared by the present invention, strength, wear resistance, impact resistance And it is possible to secure the bottom surface excellent in crack resistance and the like.
또한, 본 발명에 따른 조성물에는 상기 4성분 조성물 이외에도 분산제, 보수제 및 소포제 등의 혼화제와 시멘트용 합성고분자 고무를 디스퍼전화한 폴리머가 적량 혼합되어 있다. 본 발명에서는 상기 4성분계 조성물에 대한 시멘트용 합성고분자 고무를 디스퍼전화한 폴리머의 첨가량이 중요한 바, 즉 보통포틀랜드시멘트, 알루미나시멘트, 무수석고 및 골재로 이루어진 상 조성물 100 중량부에 대하여 5∼50 중량부로 첨가하는 것이 바람직하다.In addition to the above four-component composition, the composition according to the present invention is mixed with an admixture such as a dispersant, a water-retaining agent and an antifoaming agent, and a polymer obtained by dispersing a synthetic polymer rubber for cement. In the present invention, the addition amount of the polymer dispersing the synthetic polymer rubber for cement to the four-component composition is important, that is, 5 to 50 parts by weight based on 100 parts by weight of the phase composition composed of ordinary portland cement, alumina cement, anhydrous gypsum and aggregate. It is preferable to add by weight.
만일, 상기 첨가량이 5 중량부 이하이면 내충격성이나 내마모성 등의 효과가 저하되고, 50 중량부 이상이면 오히려 유동성이 심하게 저하되어 평탄성이 좋지 못할 뿐만 아니라, 합성고분자 고무를 디스퍼전화하면서 첨가되는 각종 안정제로 부터 다량의 기포가 발생하여 시멘트의 수화를 방해하므로써 압축, 인장 및 휨강도 등의 기계적 물성이 심하게 저하한다. 그러므로, 상기 첨가량이 더욱 바람직하기로는 10∼20 중량부의 범위의 것이 효과적이다.If the added amount is 5 parts by weight or less, effects such as impact resistance and abrasion resistance are lowered, and if the amount is 50 parts by weight or more, the fluidity is severely lowered, resulting in poor flatness and various additions of dispersing synthetic polymer rubber. As a large amount of bubbles are generated from the stabilizer, which hinders the hydration of cement, mechanical properties such as compression, tensile strength, and bending strength are severely degraded. Therefore, the addition amount is more preferably in the range of 10 to 20 parts by weight.
상기 혼화제의 주요 성분으로서, 분산제로는 나프탈린, 멜라민 및 폴리아크릴산염계 등의 고축합물 및 비이온계 계면활성제 등이 사용될 수 있으며, 보수제로는 통상의 고점도형 수용성 폴리머(모노머)인 셀루로즈 유도체나 폴리비닐알코올(PVA) 등을 사용할 경우, 상술한 합성고분자 고무를 디스퍼전한 폴리머의 점도를 높여 대규모 공장바닥의 시공시에는 혼합이나 펌핑(pumping)이 불량하고, 유동성이 좋지 못하여 시공성이 저하하게 된다.As the main component of the admixture, a dispersant may be used a high condensate such as naphthalin, melamine, and polyacrylates, and nonionic surfactants, and as a repair agent, a cellulose which is a conventional high viscosity water-soluble polymer (monomer). When using a rose derivative or polyvinyl alcohol (PVA), it is possible to increase the viscosity of the polymer obtained by dispersing the above-mentioned synthetic polymer rubber, so that the mixing or pumping is poor and the fluidity is poor when constructing a large plant floor. This lowers.
그러므로, 본 발명에서는 이러한 단점을 해결하고자, 합성고분자 고무를 디스퍼전화한 폴리머의 점도가 100∼500 mPa.s, 2% 수용액의 점도가 300∼1000 cps인 보수제 및 소포제를 함께 첨가하면 유동성, 보수성, 소포성의 기능이 우수하여 기포발생이 없으며, 강도가 우수하여 시공 1일 후에는 연속공정이 가능하고 균열이 없는 최적의 합성고분자-시멘트계 자기평탄성 상 조성물을 형성하게 된다.Therefore, in the present invention, in order to solve this disadvantage, the viscosity of the polymer dispersed synthetic polymer rubber is 100 to 500 mPa.s, 2% aqueous solution viscosity of 300 to 1000 cps and when added together with a water repellent and antifoaming fluid, Excellent water retention and anti-foaming function, there is no bubble generation, and the strength is excellent, and after one day of construction, a continuous process is possible and an optimal synthetic polymer-cement type self-flatting phase composition is formed without cracking.
이때 보수제로는 메틸셀루로즈(MC), 하이드록시에틸셀루로즈(HEC), 하이드록시프로필메틸셀루로즈(HPMC) 등이 사용될 수 있고, 소포제로는 실리콘계, 광물유계 및 유기계 소포제가 사용될 수 있다. 한편, 시멘트 혼화용 합성고분자 고무를 디스퍼전화 폴리머로는 스칠렌부타디엔고무(Stylene Butadiene Rubber), 아크릴로니트릴부타디엔고무(Acrylonitrile Butadiene Rubber), 메타크릴산메틸부타디엔고무(Metacrylic Methyl Butadiene Rubber) 등이 사용될 수 있다.In this case, as the repair agent, methyl cellulose (MC), hydroxyethyl cellulose (HEC), hydroxypropyl methyl cellulose (HPMC), and the like may be used, and as the antifoaming agent, a silicone-based, mineral oil-based and organic-based antifoaming agent may be used. Synthetic polymer rubbers for cement admixtures include, but are not limited to, styrene butadiene rubber, acrylonitrile butadiene rubber, and methyl methbutadiene rubber. Can be used.
이하, 본 발명을 실시예 및 비교예에 의거하여 더욱 상세히 설명한다. 그러나 이러한 실시예 들로 본 발명의 범위를 한정하는 것은 아니다.Hereinafter, the present invention will be described in more detail based on Examples and Comparative Examples. However, these examples do not limit the scope of the present invention.
[실시예 1∼6]EXAMPLES 1-6
다음 표 1의 화학조성 및 광물조성을 가진 쌍용사제 포틀랜드시멘트, 알루미나시멘트 무수석고 및 골재를 혼합하여 제1단계의 4성분 상 조성물을 제조한 후, 이어서 상기 4성분 상 조성물 100 중량부에 대하여 분산제, 보수제 및 소포제로 구성된 혼화제 성분을 2 내지 10 중량부가 되도록 각각 다음 표 2에 따라 첨가시키고, 합성고분자 고무를 디스퍼전한 폴리머를 10 내지 20 중량부가 되도록 첨가하여 평탄성 상 조성물을 제조하였다. 이와 같이 하여 제조된 합성고분자-시멘트계 자기평탄성 상 조성물의 물성결과는 다음 표 3에 나타내었다.Next, the four-component phase composition of Ssangyong Co., Ltd., Portland Cement, Alumina Cement Anhydrite Gypsum and Aggregate having the chemical composition and the mineral composition of Table 1 was mixed to prepare a four-component phase composition, and then, based on 100 parts by weight of the four-component phase composition, The admixture component composed of the water-retaining agent and the anti-foaming agent was added according to the following Table 2, respectively, and the flat polymer composition was prepared by adding 10 to 20 parts by weight of the dispersed polymer. Physical properties of the synthetic polymer-cement-based self-planarizing phase composition thus prepared are shown in Table 3 below.
주 1) 보통시멘트 : 쌍용사제 포틀랜드시멘트Note 1) Regular cement: Ssangyong Portland cement
2) 알루미나시멘트2) Alumina Cement
- 실시예 1 내지 6 및 비교예 1 내지 3 : 표 1의 알루미나시멘트Examples 1-6 and Comparative Examples 1-3: alumina cement of Table 1
- 비교예 4 내지 6 : 시판 알루미나시멘트(국산 U사제)Comparative Examples 4 to 6: commercial alumina cement (manufactured by U company)
3) 무수석고 : 고효율 분쇄·분급기를 사용, blaine 8,000 ㎠/g으로 제조3) Anhydrous gypsum: manufactured with blaine 8,000 ㎠ / g using a high efficiency grinding and classifier
4) 혼화제4) Admixture
- 분산제 : 멜라민설폰산포름알데히드계 고축합물-Dispersant: Melamine sulfonic acid formaldehyde-based high condensate
- 증점제 : 하이드록시에틸셀루로스(HEC), 2% 수용액 점도 300 cpsThickener: hydroxyethyl cellulose (HEC), 2% aqueous solution viscosity 300 cps
- 소포제 : 실리콘계 소포제-Defoamer: Silicone Antifoam
5) 혼합액 : 폴리머와 분산매로 물을 혼합한 것으로, 시멘트 상 조성물 100 중량부에 대해 첨가5) Mixed solution: A mixture of water with a polymer and a dispersion medium, added to 100 parts by weight of the cement phase composition.
6) 폴리머 : 스틸렌부타디엔고무(Stylene Butadiene Rubber)를 디스퍼전한 것(고형분 47±2%, 점도 100 내지 500 mPa.s)6) Polymer: Disperse styrene butadiene rubber (solid content 47 ± 2%, viscosity 100-500 mPa.s)
주 1) 유동성 변화 : 2개의 PVC관(Ø51 × H 50 ㎜)에 슬러리를 각각 충진한 후 즉시 및 30분간 방치 후 수직으로 들어올렸을 때 퍼진 직경Note 1) Change in fluidity: diameters when the two PVC pipes (Ø51 × H 50 mm) were filled with slurry, and then lifted vertically after standing for 30 minutes immediately.
2) 응결시간 : JIS R 5201에 준하여 측정2) Condensation time: measured according to JIS R 5201
3) 압축강도, 휨강도 : JIS R 5201 방법에 준하여 측정3) Compressive strength, flexural strength: measured according to JIS R 5201 method
4) 부착력 시험 : JASS 15M-103 방법에 준하여 측정, 이때 성형된 시험체는 각각 23℃의 수중 및 RH 65% 기건의 실험내에 4주간 양생한 후 실시4) Adhesion test: Measured according to JASS 15M-103 method, wherein the molded specimens were cured for 4 weeks in water at 23 ° C and 65% of RH, respectively.
5) 낙추충격시험 : JIS R 1421에 준하여 실시, 이때 무게 10㎏ 낙추를 사용5) Falling impact test: conducted in accordance with JIS R 1421, at this time weight 10㎏ used fall
6) 마모시험 : ASTM C 1138에 준하여 측정, 이때 회전속도는 6,000 rpm로 고정6) Abrasion test: measured according to ASTM C 1138, where the rotation speed is fixed at 6,000 rpm
7) 길이변화 : KS F 2404에 준하여 측정, 이때 시편은 23℃, RH 65% 실험실내 양생7) Change in length: Measured according to KS F 2404. At this time, the specimen is 23 ℃, RH 65%
상기 표 3에서 보는 바와 같이 본 발명에 따른 합성고분자-시멘트계 자기평탄성 상 조성은 흐름치 230 ㎜ 이상, 압축강도 400 ㎏/㎠, 휨강도 90 ㎏/㎠ 이상으로서, 종래의 시멘트계 SL 상 조성물에 비해 그 성능이 월등히 우수할 뿐만 아니라, 부착성, 내충격성 및 내마모성도 매우 안정하여 대규모 공장 바닥에 실시할 수 있는 실용적인 상 조성물이다. 특히, 실시예 1 내지 3의 길이변화 측정치를 보면 재령 4주 이상에서도 수축율이 거의없는 무수축성을 나타내기 때문에 광범위한 면적의 시공도 가능하며, 경화 후 건조수축에 의한 균열이 전혀없는 우수한 물성을 나타내고 있다.As shown in Table 3, the synthetic polymer-cement-based self-flat phase composition according to the present invention has a flow value of 230 mm or more, a compressive strength of 400 kg / cm 2, and a bending strength of 90 kg / cm 2 or more, compared to the cement-based SL phase composition of the related art. Not only is it superior in performance, but also very stable in adhesion, impact resistance and abrasion resistance, it is a practical phase composition that can be carried out on a large factory floor. In particular, the measurement results of the length change of Examples 1 to 3 show a non-shrinkage property with almost no shrinkage even at 4 weeks or more, so that the construction of a wide area is possible, and shows excellent physical properties without cracking due to dry shrinkage after curing. have.
[비교예 1∼6]Comparative Examples 1 to 6
다음 표 1의 화학조성 및 광물조성을 가진 쌍용사제 포틀랜드시멘트, 알루미나시멘트 무수석고 및 골재를 혼합하여 제1단계의 4성분 상 조성물을 제조한 후, 이어서 상기 4성분 상 조성물 100 중량부에 대하여 분산제, 보수제 및 소포제로 구성된 혼화제 성분을 2 내지 10 중량부가 되도록 각각 다음 표 4에 따라 첨가시키고, 합성고분자 고무를 디스퍼전한 폴리머를 10 내지 20 중량부가 되도록 첨가하여 평탄성 상 조성물을 제조하였다. 이와 같이 하여 제조된 합성고분자-시멘트계 자기평탄성 상 조성물의 물성결과는 다음 표 5에 나타내었다.Next, the four-component phase composition of Ssangyong Co., Ltd., Portland Cement, Alumina Cement Anhydrite Gypsum and Aggregate having the chemical composition and the mineral composition of Table 1 was mixed to prepare a four-component phase composition, and then, based on 100 parts by weight of the four-component phase composition, The admixture component consisting of a water-retaining agent and an antifoaming agent was added to 2 to 10 parts by weight, respectively, according to the following Table 4, and a flat phase composition was prepared by adding 10 to 20 parts by weight of the polymer in which the synthetic polymer rubber was dispersed. Physical properties of the synthetic polymer-cement-based self-planarizing phase composition thus prepared are shown in Table 5 below.
[표 1]TABLE 1
주 1) 보통시멘트 : 쌍용사제 포틀랜드시멘트Note 1) Regular cement: Ssangyong Portland cement
2) 알루미나시멘트2) Alumina Cement
- 실시예 1 내지 6 및 비교예1 내지 3 : 표 1의 알루미나시멘트Examples 1-6 and Comparative Examples 1-3: alumina cement of Table 1
- 비교예 4 내지 6 : 시판 알루미나시멘트(국산 U사제)Comparative Examples 4 to 6: commercial alumina cement (manufactured by U company)
3) 무수석고 : 고효율 분쇄·분급기를 사용, blaine 8,000 ㎠/g으로 제조3) Anhydrous gypsum: manufactured with blaine 8,000 ㎠ / g using a high efficiency grinding and classifier
4) 혼화제4) Admixture
- 분산제 : 멜라민설폰산포름알데히드계 고축합물-Dispersant: Melamine sulfonic acid formaldehyde-based high condensate
- 증점제 : 하이드록시에틸셀루로스(HEC), 2% 수용액 점도 300 cpsThickener: hydroxyethyl cellulose (HEC), 2% aqueous solution viscosity 300 cps
- 소포제 : 실리콘계 소포제-Defoamer: Silicone Antifoam
5) 혼합액 : 폴리머와 분산매로 물을 혼합한 것으로, 시멘트 상 조성물 100 중량부에 대해 첨가5) Mixed solution: A mixture of water with a polymer and a dispersion medium, added to 100 parts by weight of the cement phase composition
6) 폴리머 : 스틸렌부타디엔고무(Stylene Butadiene Rubber)를 디스퍼전한 것(고형분 47±2%, 점도 100 내지 500 mPa.s)6) Polymer: Disperse styrene butadiene rubber (solid content 47 ± 2%, viscosity 100-500 mPa.s)
주 1) 유동성 변화 : 2개의 PVC관(Ø51 × H 50 ㎜)에 슬러리를 각각 충진한 후 즉시 및 30분간 방치 후 수직으로 들어올렸을 때 퍼진 직경Note 1) Change in fluidity: diameters when the two PVC pipes (Ø51 × H 50 mm) were filled with slurry, and then lifted vertically after standing for 30 minutes immediately.
2) 응결시간 : JIS R 5201에 준하여 측정2) Condensation time: measured according to JIS R 5201
3) 압축강도, 휨강도 : JIS R 5201 방법에 준하여 측정3) Compressive strength, flexural strength: measured according to JIS R 5201 method
4) 부착력 시험 : JASS 15M-103 방법에 준하여 측정, 이때 성형된 시험체는 각각 23℃의 수중 및 RH 65% 기건의 실험내에 4주간 양생한 후 실시4) Adhesion test: Measured according to JASS 15M-103 method, wherein the molded specimens were cured for 4 weeks in water at 23 ° C and 65% of RH, respectively.
5) 낙추충격시험 : JIS R 1421에 준하여 실시, 이때 무게 10㎏ 낙추를 사용5) Falling impact test: conducted in accordance with JIS R 1421, at this time weight 10㎏ used fall
6) 마모시험 : ASTM C 1138에 준하여 측정, 이때 회전속도는 6,000 rpm로 고정6) Abrasion test: measured according to ASTM C 1138, where the rotation speed is fixed at 6,000 rpm
7) 길이변화 : KS F 2404에 준하여 측정, 이때 시편은 23℃, RH 65% 실험실내 양생7) Change in length: Measured according to KS F 2404. At this time, the specimen is 23 ℃, RH 65%
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| KR101516214B1 (en) * | 2015-02-03 | 2015-05-04 | 주식회사 이레하이테크이앤씨 | Quick-hardening cement concrete composite having improved properties and repairing method for concrete structure using the composite |
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| KR100398074B1 (en) * | 1995-12-30 | 2003-12-18 | 금강종합건설 주식회사 | Cement mortar composition having self-levelling property for heating hot-floor in building |
| KR20030020020A (en) * | 2001-08-29 | 2003-03-08 | 주식회사 케미콘 | A composite of adhesives for a hot-floored plate of the polymer cement system |
| CN108046701B (en) * | 2017-12-19 | 2021-05-11 | 河南理工大学 | Cement-based self-leveling mortar and application thereof |
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| KR101516214B1 (en) * | 2015-02-03 | 2015-05-04 | 주식회사 이레하이테크이앤씨 | Quick-hardening cement concrete composite having improved properties and repairing method for concrete structure using the composite |
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