KR101447181B1 - Mortar with high selp leveling using expanded polyurethane and aggregate - Google Patents
Mortar with high selp leveling using expanded polyurethane and aggregate Download PDFInfo
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- KR101447181B1 KR101447181B1 KR1020140027830A KR20140027830A KR101447181B1 KR 101447181 B1 KR101447181 B1 KR 101447181B1 KR 1020140027830 A KR1020140027830 A KR 1020140027830A KR 20140027830 A KR20140027830 A KR 20140027830A KR 101447181 B1 KR101447181 B1 KR 101447181B1
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B16/00—Use of organic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of organic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B16/04—Macromolecular compounds
- C04B16/08—Macromolecular compounds porous, e.g. expanded polystyrene beads or microballoons
- C04B16/082—Macromolecular compounds porous, e.g. expanded polystyrene beads or microballoons other than polystyrene based, e.g. polyurethane foam
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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
- C04B18/18—Waste materials; Refuse organic
- C04B18/24—Vegetable refuse, e.g. rice husks, maize-ear refuse; Cellulosic materials, e.g. paper, cork
- C04B18/248—Vegetable refuse, e.g. rice husks, maize-ear refuse; Cellulosic materials, e.g. paper, cork from specific plants, e.g. hemp fibres
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/12—Flooring or floor layers made of masses in situ, e.g. seamless magnesite floors, terrazzo gypsum floors
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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
- C04B2103/30—Water reducers, plasticisers, air-entrainers, flow improvers
- C04B2103/302—Water reducers
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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
- C04B2103/30—Water reducers, plasticisers, air-entrainers, flow improvers
- C04B2103/34—Flow improvers
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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
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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
- C04B2103/44—Thickening, gelling or viscosity increasing agents
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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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
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- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Description
본 발명은 미장 모르타르에 관한 것으로, 특히 발포 폴리우레탄과 잔골재를 사용하여 셀프 레벨링 성능이 우수하고, 압축강도가 높고 경량 특성을 갖는, 발포 폴리우레탄과 잔골재를 이용한 셀프 레벨링이 우수한 미장 모르타르에 관한 것이다.
More particularly, the present invention relates to a fine mortar having excellent self-leveling performance using a foamed polyurethane and a fine aggregate and having excellent self-leveling using foamed polyurethane and fine aggregate having a high compressive strength and a lightweight property .
한국인이 많이 거주하고 있는 주거용 주택, 특히 다세대나 아파트와 같은 건축물에 있어서의 바닥 구조는 층 구획과 더불어 냉,난방 및 차음 문제를 동시에 해결하여야 한다.Floor structures in residential buildings, especially multi - family buildings and apartment buildings, where Koreans are inhabited, should solve the problem of cooling, heating and sound insulation in addition to the floor compartment.
특히, 최근에는 층간 소음문제가 매우 중요시됨에 따라 슬래크 콘크리트의 두께를 210mm 이상으로 두껍게 하고, 차음재 및 단열재 등을 시공한 다음 난방 파이프를 배관하고 마감 모르타르에 의한 평탄 마감 후 강화마루판 등의 마감재를 시공하는 것이 일반적이다.Especially, recently, since the problem of interlayer noise is very important, it is necessary to increase the thickness of the slab concrete to more than 210mm, to install the sound insulating material and insulation material, and then to pipe the heating pipe and to finish the floor board after the flat finishing by the finishing mortar It is common to construct.
그러나, 상기와 같은 방법의 시공에서 많은 개발이 이루어져 중량충격음, 경량충격음 등의 층간 소음 등이 종전보다 많이 감소되어 큰 진전을 보이고는 있지만, 거주자들의 높은 의식에 대응하고 조금이라도 경제적으로 시공하기 위해서는 보다 효과적이고 경제적인 모르타르가 필요하게 된다.However, many developments have been made in the construction of the above-mentioned method, so that the interlayer noise such as the heavy impact sound and the light impact sound have been reduced much more than before. However, in order to cope with the high consciousness of the residents and to construct even a little economically A more effective and economical mortar is required.
이와 관련된 기술을 살펴보면, "우레탄폴 콘크리트의 시공방법 및 이에 사용되는 우레탄폴 콘크리트"(한국 등록특허공보 제10-0391558호, 특허문헌 1)에는 폐우레탄폼과 폐스치로폴 및 혼화제, 시멘트, 모래를 적정 비율로 혼합하는 기술이 공개되어 있다.In the related art, "urethane foam concrete used in urethane foam concrete and urethane foam concrete used therein" (Korean Patent Registration No. 10-0391558, Patent Document 1) includes waste urethane foam, waste styrofoam, admixture, cement and sand And a technique of mixing at an appropriate ratio is disclosed.
상기 특허문헌 1에서는 우레탄폴을 모르타르 전체 용적 대비 75 %가 되도록 하고, 모래의 사용량을 2%로 최소화하였다.In Patent Document 1, the urethane pole is set to 75% of the total mortar volume, and the amount of sand used is minimized to 2%.
상기 특허문헌1은 일반 시멘트 콘크리트와 비교하여 비중이 작아 경량화를 이루며, 열전도율을 높였으며, 흡음율이 높은 장점을 갖는다.The above Patent Document 1 has a small specific gravity as compared with general cement concrete, achieves weight reduction, increases the thermal conductivity, and has a high sound absorption rate.
또, 압축 강도 역시 1MPa도 안되는 문제점이 있었다.In addition, the compressive strength is also less than 1 MPa.
또다른 기술로, "발포 우레탄폴과 폐합성수지를 주성분으로 하는 콘크리트용 모르터 및 그 제조방법"(한국 등록특허공보 제10-0784978호, 특허문헌 2)에는 특허문헌 1과 유사한 조성을 가지면서 모래의 사용을 배제한 기술이 공개되기도 하였다.As another technique, "mortar for concrete mainly composed of foamed urethane pole and waste synthetic resin and method for producing the same" (Korean Patent Registration No. 10-0784978, Patent Document 2) discloses a mortar having a composition similar to that of Patent Document 1, Technology that excludes use has been made public.
상기 특허문헌 2는 특허문헌 1에 비해 압축강도가 개선되었으나, 이 역시 압축강도가 작게는 1MPa 정도에 불구하고, 흡음율을 오히려 더 저하된 문제점이 있었다.In Patent Document 2, although the compression strength is improved as compared with the Patent Document 1, there is a problem that the sound absorption rate is lowered even though the compression strength is small, even though it is about 1 MPa.
더불어, 상기 특허문헌 1, 2는 공통적으로 우수한 특성을 가짐에도 불구하고 셀프 레벨링 성능이 우수하지 못한 바, 시공 과정에서 레벨링을 맞춰 주기 위한 노력이 수반되어야 하는 문제점이 있었다.In addition, although the above-described Patent Documents 1 and 2 commonly have excellent characteristics, the self-leveling performance is not excellent, and there is a problem that an effort must be made to align the leveling in the construction process.
특히, 미장 모르타르는 여타의 구조벽체용 콘크리트와 달리 셀프 레벨링 성능의 유지가 매우 중요한데, 상기 특허문헌들과 같이 우레탄폴의 비율이 높을수록 경량성 및 단열, 흡음 성능은 높아지는 반면, 압축강도의 저하를 발생시키게 되며, 미장 모르타르가 갖춰야 할 주요 성능인 셀프 레벨링 성능이 저하되는 바, 상기와 같은 종래 기술의 모르타르는 미장 모르타르로 사용하기에 적합하지 못한 문제점이 있었다.In particular, as for the concrete mortar, it is very important to maintain the self-leveling performance unlike concrete for other structural walls. As in the above-mentioned patent documents, the higher the ratio of the urethane pole, the higher the lightness, the heat insulation and the sound absorption performance, And the self-leveling performance, which is a main performance to be provided by the mortar, is lowered. Thus, the mortar of the prior art as described above is not suitable for use as a plaster mortar.
또, 미장 모르타르는 기본적으로 잔골재가 포함되어야 하나, 우레탄폴의 낮은 비중으로 인해 잔골재, 시멘트 등과 층분리가 쉽게 발생하게 되어 셀프 레벨링 성능의 저하를 일으키는 문제점도 있었다.
In addition, fine mortar should basically contain fine aggregate, but due to the low specific gravity of the urethane pole, separation of the fine aggregate, cement, and the like is easily caused, thereby deteriorating the self-leveling performance.
본 발명은 상기와 같은 종래 기술에서 발생하는 문제점을 해소하기 위한 것으로, 미장 모르타르에 흡음 성능을 부여하는 한편, 압축강도 및 셀프 레벨링이 우수해질 수 있게 하려는 것이다.Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide a soundproofing performance of a plaster mortar and an excellent compression strength and self-leveling.
보다 구체적으로, 발포 폴리우레탄 분말을 시멘트에 첨가함으로써 경량성, 단열성, 흡음 성능을 부여하되, 잔골재와 발포 폴리우레탄 분말의 최적 비율을 도출하여 압축 강도의 저하를 방지하고, 셀프 레벨링 성능을 확보할 수 있게 하려는 것이다.More specifically, by adding foamed polyurethane powder to cement, it is possible to provide lightweight, heat-insulating and sound-absorbing performance, while preventing the degradation of compressive strength by deriving the optimum ratio of fine aggregate and foamed polyurethane powder, I want to be able to.
더불어, 적정 비율의 유동화제를 이용하여 밀실 충전율늘 높여 공극을 감소시켜 압축 강도를 높이고, 셀프 레벨링 성능을 확보할 수 있게 하려는 것이다.In addition, by using a proper proportion of fluidizing agent, it is possible to increase the packing density of the chamber, thereby reducing the voids, thereby increasing the compressive strength and securing the self-leveling performance.
즉, 부순 잔골재, 유동화제, 발포 폴리우레탄 분말을 최적의 비율로 한정함으로써 미장 모르타르에 필요한 우수한 셀프 레벨링 성능 및 기준 이상의 압축강도를 발현할 수 있게 하려는 것이다.That is, by limiting the crushed fine aggregate, the fluidizing agent and the foamed polyurethane powder at an optimum ratio, it is intended to achieve an excellent self-leveling performance required for fine mortar and a compressive strength not less than a reference value.
또한, 미량의 감귤 껍질 분말을 첨가함으로써 타설, 양생 후 발생하는 콘크리트 특유의 유해한 냄새를 저감시키고, 회색빛의 콘크리트 색상을 보다 밝은 색상으로 보이도록 하여 미감을 향상시킬 수 있게 하려는 것이다.
In addition, by adding a small amount of citrus peel powder, it is possible to reduce the harmful odor peculiar to concrete generated after pouring and curing, and to make the gray concrete color look lighter, thereby improving the aesthetics.
본 발명의 발포 폴리우레탄을 이용한 셀프 레벨링이 우수한 미장 모르타르는 상기와 같은 과제를 해결하기 위하여, 시멘트 100 중량부와, 상기 시멘트 100 중량부 대비 4.3 ~ 5.1 중량부의 조립률 2.1 ~ 2.5인 발포 폴리우레탄 분말과; 상기 시멘트 100 중량부 대비 150 ~ 210 중량부의 조립률 2.80 ~ 2.91인 잔골재와; 상기 시멘트 100 중량부 대비 15 ~ 25 중량부의 조립률 3.35 ~ 3.45인 부순 잔골재와; 상기 시멘트 100 중량부 대비 0.1 ~ 0.3 중량부의 감수제와; 상기 시멘트 100 중량부 대비 0.1 ~ 0.3 중량부의 증점제와; 상기 시멘트 100 중량부 대비 0.1 ~ 0.3 중량부의 계면활성제와; 상기 시멘트 100 중량부 대비 0.5 ~ 1.5 중량부의 유동화제와; 상기 시멘트 100 중량부 대비 85 ~ 93 중량부의 물;을 포함하여 구성된다.In order to solve the above problems, the present invention provides a fine mortar excellent in self-leveling using the foamed polyurethane of the present invention, comprising 100 parts by weight of cement, and 0.3 to 5.0 parts by weight of foamed polyurethane A powder; Fine aggregate having a granulation ratio of 2.80 to 2.91 in an amount of 150 to 210 parts by weight based on 100 parts by weight of the cement; Fine aggregate having a granulation ratio of 3.35 to 3.45 in an amount of 15 to 25 parts by weight based on 100 parts by weight of the cement; 0.1 to 0.3 parts by weight of a water reducing agent based on 100 parts by weight of the cement; 0.1 to 0.3 parts by weight of a thickener relative to 100 parts by weight of the cement; 0.1 to 0.3 parts by weight of a surfactant relative to 100 parts by weight of the cement; 0.5 to 1.5 parts by weight of a fluidizing agent relative to 100 parts by weight of the cement; And 85 to 93 parts by weight of water based on 100 parts by weight of the cement.
이때, 상기 발포 폴리우레탄 분말은 시멘트 100 중량부 대비 4.7 ~ 4.9 중량부이며, 상기 감수제, 증점제, 계면활성제는 각각 시멘트 100 중량부 대비 0.15 ~ 0.20 중량부이며, 상기 유동화제는 시멘트 100 중량부 대비 0.9 ~ 1.1 중량부이며, 상기 잔골재는 시멘트 100 중량부 대비 170 ~ 190 중량부이고, 상기 부순 잔골재는 시멘트 100 중량부 대비 18 ~ 22 중량부인 것을 특징으로 한다.The amount of the water reducing agent, the thickener and the surfactant is 0.15 to 0.20 parts by weight based on 100 parts by weight of the cement, and the fluidizing agent is added to 100 parts by weight of the cement Wherein the fine aggregate is 170 to 190 parts by weight based on 100 parts by weight of the cement and the crushed fine aggregate is 18 to 22 parts by weight based on 100 parts by weight of the cement.
더불어, 상기 시멘트 100 중량부 대비 0.01 ~ 0.02 중량부의 감귤 껍질 분말이 더 포함된 것을 특징으로 한다.
In addition, 0.01 to 0.02 part by weight of citrus peel powder is further contained in 100 parts by weight of the cement.
본 발명에 의해, 미장 모르타르에 흡음 성능을 부여하는 한편, 압축강도 및 셀프 레벨링이 우수해질 수 있게 된다.According to the present invention, it is possible to provide the soundproofing performance to the plaster mortar, and to improve the compressive strength and self-leveling.
보다 구체적으로, 발포 폴리우레탄 분말을 시멘트에 첨가함으로써 경량성, 단열성, 흡음 성능을 부여하되, 잔골재와 발포 폴리우레탄 분말의 최적 비율을 도출하여 압축 강도의 저하를 방지하고, 셀프 레벨링 성능을 확보할 수 있게 된다.More specifically, by adding foamed polyurethane powder to cement, it is possible to provide lightweight, heat-insulating and sound-absorbing performance, while preventing the degradation of compressive strength by deriving the optimum ratio of fine aggregate and foamed polyurethane powder, .
더불어, 적정 비율의 유동화제를 이용하여 밀실 충전율늘 높여 공극을 감소시켜 압축 강도를 높이고, 셀프 레벨링 성능을 확보할 수 있게 된다.In addition, by using a proper proportion of fluidizing agent, the void filling rate is always increased to increase the compressive strength and ensure the self-leveling performance.
즉, 부순 잔골재, 유동화제, 발포 폴리우레탄 분말을 최적의 비율로 한정함으로써 미장 모르타르에 필요한 우수한 셀프 레벨링 성능 및 기준 이상의 압축강도를 발현할 수 있게 된다.That is, by limiting the crushed fine aggregate, the fluidizing agent, and the foamed polyurethane powder at an optimum ratio, it is possible to exhibit excellent self-leveling performance required for fine mortar and a compressive strength not less than a standard.
또한, 미량의 감귤 껍질 분말을 첨가함으로써 타설, 양생 후 발생하는 콘크리트 특유의 유해한 냄새를 저감시키고, 회색빛의 콘크리트 색상을 보다 밝은 색상으로 보이도록 하여 미감을 향상시킬 수 있게 된다.
In addition, by adding a small amount of citrus peel powder, it is possible to reduce harmful odors peculiar to concrete generated after pouring and curing, and to make the concrete color of gray light appear brighter, thereby improving the aesthetics.
이하 본 발명의 발포 폴리우레탄과 잔골재를 이용한 셀프 레벨링이 우수한 미장 모르타르에 대해 상세히 설명하기로 한다.
Hereinafter, the fine mortar excellent in self-leveling using the foamed polyurethane and fine aggregate of the present invention will be described in detail.
본 발명의 발포 폴리우레탄과 잔골재를 이용한 셀프 레벨링 이수한 미장 모르타르는 크게 시멘트, 발포 폴리우레탄 분말, 잔골재, 부순 잔골재, 감수제, 증점제, 계면활성제, 유동화제 및 물을 포함하여 구성되어 있다.
The self-leveling finished mortar using the foamed polyurethane and fine aggregate of the present invention is largely composed of cement, expanded polyurethane powder, fine aggregate, fine aggregate, water reducing agent, thickener, surfactant, fluidizing agent and water.
본 발명에서 시멘트는 일반 포틀랜드 시멘트를 사용하며, 그 조성은 100 중량부로 구성된다.In the present invention, common Portland cement is used as the cement, and its composition is composed of 100 parts by weight.
미장용에 적합하도록 보다 바람직한 성능은 밀도 3.10 ~ 3.20 g/㎤, 블레인 분말도 3,385 ~3,390 ㎠/g, 오토클레이브 팽창도 0.05%인 것이 좋다.
It is more preferable that the density is in the range of 3.10 to 3.20 g / cm 3, the blast powder is in the range of 3,385 to 3,390 cm 2 / g, and the autoclave expansion degree is 0.05%.
본 발명에서 발포 폴리우레탄 분말은 경량 성능, 단열 성능 및 흡음 성능을 높여주는 것으로, 상기 시멘트 100 중량부 대비 4.3 ~ 5.1 중량부의 조립률 2.1 ~ 2.5의 범위로 구성된다.In the present invention, the foamed polyurethane powder improves the lightweight performance, the heat insulation performance, and the sound absorption performance, and is configured to have an assembly ratio of 2.1 to 2.5 in the range of 4.3 to 5.1 parts by weight based on 100 parts by weight of the cement.
이때, 상기 발포 폴리우레탄 분말은 시멘트 100 중량부 대비 4.7 ~ 4.9 중량부 구성됨이 보다 바람직하다.At this time, the foamed polyurethane powder is more preferably composed of 4.7 to 4.9 parts by weight based on 100 parts by weight of cement.
발포 폴리우레탄 분말이 경량 성능, 단열 성능 및 흡음 성능을 높여주는 것은 특허문헌 1,2 등에 알려진 바다.The foamed polyurethane powder improves the lightweight performance, the heat insulation performance and the sound absorption performance, as described in Patent Documents 1 and 2.
이러한 발포 폴리우레탄 분말은 상기 성능을 높여주기 위해서는 그 조성비가 높아져야 함이 자명하다.It is obvious that such a foamed polyurethane powder must have a higher composition ratio in order to improve the performance.
그런데, 미장 모르타르의 경우 셀프 레벨링 성능의 확보가 중요하며, 기본적으로 어느 수준 이상의 압축 강도를 발휘해야 한다.However, in the case of plaster mortar, it is important to secure the self-leveling performance, and basically it should exhibit a compressive strength higher than a certain level.
본 발명에서는 실험 결과 발포 폴리우레탄 분말의 중량이 일정 기준을 넘어서게 되면 셀프 레벨링 성능 및 압축강도가 저하되는 것을 파악하여 상기 비율로 그 범위를 한정하였다.According to the present invention, when the weight of the foamed polyurethane powder exceeds a certain standard, the self-leveling performance and the compressive strength are deteriorated, and the range is limited by the ratio.
이러한 발포 폴리우레탄은 밀도가 0.13 ~ 0.15 g/㎤인 것이 바람직하다.The foamed polyurethane preferably has a density of 0.13 to 0.15 g / cm3.
발포 폴리우레탄 분말의 조립율이 잔골재 및 부순 잔골재보다 작은, 즉 입자 크기가 더 큰 이유는 잔골재, 시멘트, 부순 잔골재 등에 비해 비중이 작은 발포 폴리우레탄 분말의 입자가 상기 조립률 2.1 ~ 2.5보다 큰, 즉 입자 크기가 작아지게 되면 물과 함께 시멘트나 잔골재, 부순 잔골재 입자등과 혼합된 상태에서 비중에 의해 상승하려는 부력을 갖게 되고, 이때 발포 폴리우레탄 분말 입자가 작음으로 인해 쉽게 상승하여 층분리가 이루어져 균일한 품질을 가질 수 없게 되며, 이는 셀프 레벨링 성능, 압축 강도 등의 균일성에 문제를 발생시키게 된다.The reason why the granulation ratio of the foamed polyurethane powder is smaller than that of the fine aggregate and the fine aggregate is that the particles of the expanded polyurethane powder having a smaller specific gravity than the fine aggregate, cement, fine aggregate and the like are larger than the above- When the particle size becomes small, it has buoyancy to rise by the specific gravity in the state of being mixed with water, cement, fine aggregate, fine aggregate particles, etc. In this case, since the foamed polyurethane powder particles are small, It becomes impossible to obtain a uniform quality, which causes a problem in the uniformity of the self-leveling performance, the compressive strength and the like.
또, 입자의 크기가 너무 커지게 되는 경우에는 혼합된 상태에서 단위 체적에서 시멘트와 잔골재, 부순 잔골재의 결합력보다 큰 부력이 발생하려 이 역시 층분리가 발생하기 때문이다.In addition, when the particle size becomes too large, a buoyancy greater than the bonding strength between cement, fine aggregate and crushed fine aggregate is generated in the unit volume in the mixed state, which also causes layer separation.
결국, 상기 입도를 갖는 경우에 공극 및 부력에 의한 층 분리 현상이 발생하지 않게 되는 것이다.
As a result, in the case of having the particle size, the layer separation phenomenon due to void and buoyancy does not occur.
본 발명에서 잔골재는 압축 강도를 높여주는 기본 구성요소로 상기 시멘트 100 중량부 대비 150 ~ 210 중량부로 구성되며, 조립률 2.80 ~ 2.91인 것을 특징으로 한다.In the present invention, the fine aggregate is a basic component for increasing the compressive strength and is composed of 150 to 210 parts by weight based on 100 parts by weight of the cement, and has an assembly ratio of 2.80 to 2.91.
이때, 잔골재는 시멘트 100 중량부 대비 170 ~ 190 중량부로 구성됨이 보다 바람직하다.
At this time, the fine aggregate is more preferably composed of 170 to 190 parts by weight based on 100 parts by weight of cement.
본 발명에서 부순 잔골재는 미장용 모르타르의 셀프 레벨링 성능을 높여주기 위한 구성으로 상기 시멘트 100 중량부 대비 15 ~ 25 중량부로 구성되며, 조립률 3.35 ~ 3.45인 것을 특징으로 한다.In the present invention, the crushed fine aggregate is a composition for enhancing the self-leveling performance of mortar for plaster, and is composed of 15 to 25 parts by weight based on 100 parts by weight of the cement, and has a granulation ratio of 3.35 to 3.45.
이때, 부순 잔골재는 시멘트 100 중량부 대비 18 ~ 22 중량부인 것이 보다 바람직한다.It is more preferable that the crushed fine aggregate is 18 to 22 parts by weight based on 100 parts by weight of cement.
특히, 부순 잔골재는 상기 잔골재와 비교하여 9 : 1의 비율이 되도록 함이 바람직하다.In particular, it is preferable that the crushed fine aggregate has a ratio of 9: 1 as compared with the fine aggregate.
부순 잔골재는 셀프 레벨링 성능을 높여주기는 하나, 상기 비중보다 높게 사용될 경우 상대적으로 폴리 우레탄폼의 사용 비중이 적어지게 되어 단열 성능, 흡읍 성능, 경량화가 떨어지게 되므로 상기 중량으로 한정됨이 바람직하다.Although the crushed fine aggregate increases the self-leveling performance, when the specific gravity is higher than the specific gravity, the specific gravity of the polyurethane foam may be relatively small, which may result in deterioration in heat insulation performance, absorption performance, and weight reduction.
더불어, 잔골재와 부순잔골재의 조립률은 앞서 발포 폴리우레탄 분말과의 관계 및 셀프 레벨링 성능을 확보하기 위해 상기 조립률로 한정됨이 바람직하다.
In addition, the granulation ratio of the fine aggregate and the fine aggregate is preferably limited to the granulation rate in order to ensure the relationship with the expanded polyurethane powder and the self-leveling performance.
본 발명에서 감수제는 상기 시멘트 100 중량부 대비 0.1 ~ 0.3 중량부로 구성된다.In the present invention, the water reducing agent is composed of 0.1 to 0.3 parts by weight based on 100 parts by weight of the cement.
보다 바람직하기로는 0.15 ~ 0.20 중량부로 이루어짐이 좋다.More preferably from 0.15 to 0.20 parts by weight.
이때, 감수제는 공지의 다양한 감수제가 사용될 수 있으나, AE감수제가 사용됨이 바람직하다.
At this time, various known water reducing agents may be used as the water reducing agent, but it is preferable to use an AE water reducing agent.
본 발명에서 증점제는 상기 시멘트 100 중량부 대비 0.1 ~ 0.3 중량부로 구성된다.In the present invention, the thickener is composed of 0.1 to 0.3 parts by weight based on 100 parts by weight of the cement.
보다 바람직하기로는 0.15 ~ 0.20 중량부로 이루어짐이 좋다.More preferably from 0.15 to 0.20 parts by weight.
증점제는 공지의 증점제로 구성될 수 있으며, 메틸셀룰로오스, 에틸셀룰로오스, 셀룰로오스에테르 중 어느 하나를 포함하여 구성될 수 있다.
The thickening agent may be composed of known thickening agents, and may be composed of any one of methyl cellulose, ethyl cellulose, and cellulose ether.
본 발명에서 계면활성제는 상기 시멘트 100 중량부 대비 0.1 ~ 0.3 중량부로 구성된다.In the present invention, the surfactant is composed of 0.1 to 0.3 parts by weight based on 100 parts by weight of the cement.
보다 바람직하기로는 0.15 ~ 0.20 중량부로 이루어짐이 좋다.More preferably from 0.15 to 0.20 parts by weight.
계면활성제는 공지의 계면활성제가 사용될 수 있다.
As the surfactant, a known surfactant may be used.
본 발명에서 유동화제는 상기 시멘트 100 중량부 대비 0.5 ~ 1.5 중량부로 구성된다.In the present invention, the fluidizing agent is composed of 0.5 to 1.5 parts by weight based on 100 parts by weight of the cement.
보다 바람직하기로는 0.9 ~ 1.1 중량부로 이루어짐이 좋다.And more preferably 0.9 to 1.1 parts by weight.
유동화제는 공지의 나프탈렌계, 멜라민계 등 다양한 유동화제가 사용될 수 있다.As the fluidizing agent, various known fluidizing agents such as naphthalene type and melamine type can be used.
이때, 유동화제, 계면활성제, 증점제의 기능을 모두 갖는 셀룰로오즈 성분의 흑회색 또는 흰색 분말정 증점성 혼화재를 사용할 수 있다.At this time, it is possible to use a black gray or white powdery thickening viscous admixture of cellulose having all the functions of a fluidizing agent, a surfactant and a thickener.
또, 혼화제로써 PPS(포졸란 폴리머 스테아레이트)를 사용할 수도 있다.In addition, PPS (pozzolanic polymer stearate) may be used as an admixture.
이러한 유동화제는 사용량이 증가할수록 유동 성능을 강화시키나, 그 첨가량이 많아질수록 단가가 상승함은 물론 유해 물질의 발생량을 증가시키는 바, 사용량을 최소화시키면서 모르타르의 여타 성능을 만족시킬 수 있도록 상기 범위 내로 사용됨이 바람직하다.
As the amount of the fluidizing agent increases, the fluidity of the fluidizing agent increases. However, as the amount of the fluidizing agent increases, the unit price of the fluidizing agent increases as well as the amount of the harmful substance increases. In order to satisfy the other performance of the mortar while minimizing the amount of the fluidizing agent, .
본 발명에서 물은 상기 시멘트 100 중량부 대비 85 ~ 93 중량부로 이루어진다.
In the present invention, water is 85 to 93 parts by weight based on 100 parts by weight of the cement.
이상과 같은 구성에 있어서 상기 시멘트 100 중량부 대비 0.01 ~ 0.02 중량부의 감귤 껍질 분말이 더 포함되어 구성될 수 있다.The composition may further comprise 0.01 to 0.02 parts by weight of citrus peel powder based on 100 parts by weight of the cement.
감귤 껍질은 통상적으로 항산화나 환경호르몬 억제 등의 효과를 가져 식용으로 사용되는 것이 일반적이며, 펄프로 사용된 기술이 공개되어 있기도 하다.Citrus peel is usually used for edible purposes and has effects such as antioxidant and environmental hormone suppression, and the technology used as pulp is also disclosed.
본 발명에서 감귤 껍질은 타설 및 양생 후 발생하는 콘크리트 특유의 유해한 냄새를 저감시키고, 회색빛의 콘크리트 색상을 보다 밝은 색상으로 보이도록 하여 미감을 향상시키도록 사용되었다.In the present invention, the citrus peel is used to reduce the harmful odor peculiar to concrete occurring after pouring and curing, and to enhance the aesthetics by making the gray concrete color look brighter.
특히, 상기 비율 이하로 사용될 경우 냄새 저감 효과나, 색상의 변화가 미비하며, 상기 비율 이상으로 사용될 경우 압축 강도의 저하 및 셀프 레벨링 성능의 저하를 일으키는 바, 상기 중량으로 사용됨이 바람직하다.
Particularly, when it is used below the above-mentioned ratio, the odor reduction effect and the color change are insufficient, and when used above the above ratio, the compression strength is lowered and the self-leveling performance is lowered.
이하, 본 발명의 발포 폴리우레탄과 잔골재를 이용한 셀프 레벨링이 우수한 미장 모르타르의 실시예를 설명하기로 한다.
Hereinafter, embodiments of the fine mortar excellent in self-leveling using the foamed polyurethane and fine aggregate of the present invention will be described.
[실시예 1][Example 1]
체적 1㎥인 용기에 밀도 3.15g/㎤, 블레인 분말도 3,390㎠, 오토클래이브 팽창도 0.05%인 포틀랜드 시멘트 419kg, 조립률 2.3인 발포 폴리우레탄 분말 20kg, 조립률 2.86인 잔골재 754kg, 조립률 1.17인 부순 잔골재 89kg, AE감수제 700g, 증점제로 메틸 셀룰로오스 600g, 비이온 계면활성제 700g, 폴리카본산 계 유동화제 4kg, 물 369kg을 강제식 팬 타입 믹서를 사용하여 20 rpm으로 30초간, 30rpm으로 60초간, 40rpm으로 90초간 교반하여 미장 모르타르를 제조하였다.
419 kg of Portland cement having a density of 3.15 g / cm 3, a blast powder of 3,390 cm 2, and an autoclave expansion degree of 0.05%, 20 kg of foamed polyurethane powder having an assembling ratio of 2.3, 754 kg of fine aggregate having an assembling ratio of 2.86, 89 kg of phosphorus fine aggregate, 700 g of AE water reducing agent, 600 g of methylcellulose as thickener, 700 g of nonionic surfactant, 4 kg of polycarbonate-based fluidizing agent and 369 kg of water were mixed with a forced fan type mixer for 30 seconds at 20 rpm and 60 seconds at 30 rpm , And the mixture was stirred at 40 rpm for 90 seconds to prepare a hard mortar.
[실시예 2][Example 2]
상기 실시예 1과 동일하게 진행하되, 감귤 껍질 분말 60g을 첨가하여 실시예 2의 미장 모르타르를 제조하였다.
The procedure of Example 1 was followed except that 60 g of citrus peel powder was added to prepare the plaster mortar of Example 2.
[비교예 1][Comparative Example 1]
실시예 1과 동일하게 진행하되, 유동화제를 배제한 채 진행하여 비교예 1의 모르타르를 제조하였다.
The mortar of Comparative Example 1 was prepared in the same manner as in Example 1 except that the fluidizing agent was excluded.
[비교예 2][Comparative Example 2]
실시예 1과 동일하게 진행하되, 유동화제를 8kg으로 구성하여 비교예 2의 모르타르를 제조하였다.
The mortar of Comparative Example 2 was prepared by proceeding in the same manner as in Example 1 except that the fluidizing agent was composed of 8 kg.
[비교예 3][Comparative Example 3]
실시예 1과 동일하게 진행하되, 발포 폴리우레탄 분말을 7kg, 잔골재를 963 kg, 부순 잔골재를 114kg으로 구성하여 비교예 3의 모르타르를 제조하였다.
The mortar of Comparative Example 3 was prepared in the same manner as in Example 1 except that 7 kg of foamed polyurethane powder, 963 kg of fine aggregate and 114 kg of crushed fine aggregate were used.
[비교예 4][Comparative Example 4]
실시예 1과 동일하게 진행하되, 볼포 폴리우레탄 분말을 33kg, 잔골재를 535kg, 부순 잔골재를 64kg으로 구성하여 비교예 4의 모르타르를 제조하였다.
The mortar of Comparative Example 4 was prepared in the same manner as in Example 1 except that 33 kg of volumetric polyurethane powder, 535 kg of fine aggregate and 64 kg of crushed fine aggregate were used.
[비교예 5][Comparative Example 5]
실시예 1과 동일하게 진행히되, 발포 폴리우레탄 분말의 조립률을 3.0으로 구성하여 비교예 5의 모르타르를 제조하였다.
The mortar of Comparative Example 5 was prepared in the same manner as in Example 1 except that the granulation ratio of the foamed polyurethane powder was set to 3.0.
[비교예 6][Comparative Example 6]
실시예 1과 동일하게 진행하되, 발포 폴리우레탄 분말의 조립률을 1.9로 구성하여 비교예 6의 모르타르를 제조하였다.
The mortar of Comparative Example 6 was prepared in the same manner as in Example 1 except that the granulation ratio of the foamed polyurethane powder was 1.9.
[실험예][Experimental Example]
상기 실시예 1, 2 및 비교예 1 내지 6의 모르타르가 경화되지 아니한 상태에서 슬럼프를 KS F 2594에 의거하여 실시하고, 단위 용적당 질량은 KS F 2409에 의거하여 실시하였으며, 경화 후 압축강도를 KS F 2405 규정에 의거하여 실시하였다.The mortar of Examples 1 and 2 and Comparative Examples 1 to 6 was subjected to a slump in accordance with KS F 2594 under the condition that the mortar was not cured and the mass per unit volume was measured in accordance with KS F 2409, KS F 2405 regulations.
실험 결과는 아래 표 1에 나타냈다.
The experimental results are shown in Table 1 below.
(kg/㎥)Mass per unit volume
(kg / m3)
상기 표 1에 나타난 바와 같이 실시예 1, 2의 슬럼프 플로우는 570mm, 575mm로 셀프 레벨링 성능이 우수하다.As shown in Table 1, the slump flow of Examples 1 and 2 is 570 mm and 575 mm, which is excellent in self-leveling performance.
또, 단위 용적당 질량 역시 각각 1,825kg/㎥, 1,805kg/㎥로 경량이며, 압축 강도 역시 7.0MPa 로 미장용으로 사용하기에 적합한 것을 알 수 있다.The mass per unit volume is also 1,825 kg / m 3 and 1,805 kg / m 3, respectively, and the compressive strength is also 7.0 MPa, which is suitable for use in plastering.
반면, 유동화제가 배제된 비교예 1의 경우 슬럼프 플로우가 385mm 정도에 불과하여 셀프 레벨링 성능이 떨어지고, 유동화제가 8kg 사용된 비교예 2의 경우 슬럼프 플로우, 단위 용적당 질량, 압축 강도의 조건을 모두 만족시키나 단가가 높고 유해 물질의 발생이 많아져 적합하지 않다.On the other hand, in Comparative Example 1 in which the fluidizing agent was excluded, the self-leveling performance deteriorated due to the fact that the slump flow was only about 385 mm, and in Comparative Example 2 in which the fluidizing agent was used at 8 kg, the conditions of the slump flow, mass per unit volume, It is not suitable because the unit price is high and the generation of harmful substances is high.
또, 실시예 1에 비해 발포 폴리우레탄 분말의 사용량을 줄이고, 잔골재의 사용량을 늘린 비교예 3의 경우 슬럼프 플로우는 우수하나, 단위 용적당 질량이 커져 경량 조건을 만족시키지 못하여 부적합하다.In Comparative Example 3 in which the amount of foamed polyurethane powder was reduced and the amount of fine aggregate used was increased as compared with Example 1, the slump flow was excellent, but the mass per unit volume was large and the lightweight condition was not satisfied.
비교예 3과 반대로 발포 폴리우레탄 분말이 잔골재들에 비해 상대적으로 많이 조성된 경우 슬럼프 플로우가 0이 되어 부적합하다.In contrast to Comparative Example 3, when the foamed polyurethane powder is relatively more abundant than the fine aggregates, the slump flow becomes zero, which is unsuitable.
또한, 발포 폴리우레탄 분말의 조립률 수치를 실시예 1,2에 비해 크게 하거나 작게 한 경우 압축강도가 현저하게 낮게 나타났는데, 입자들이 균일하게 분포되지 못했기 때문으로 판단된다.
In addition, when the granulation ratio of the foamed polyurethane powder was increased or decreased as compared with those of Examples 1 and 2, the compressive strength was remarkably low, which is presumably because the particles were not uniformly distributed.
<실험예 2> 관능실험1<Experimental Example 2> Sensory Test 1
실시예 1, 2 및 비교예 1 내지 6에 대해 28일 재령 후 냄새 및 색상에 대해 관능검사를 실시하여 비교하였다.The odor and color of each of Examples 1 and 2 and Comparative Examples 1 to 6 after 28 days of age were subjected to sensory evaluation and compared.
관능검사는 연령과 성별에 관계없이 총 40 명을 선발하여 진행하였다.
A total of 40 sensory tests were carried out regardless of age and gender.
* 관능 검사 수치(9 : 아주 좋음, 0 : 아주 나쁨)* Sensory test value (9: very good, 0: very bad)
상기 표 2의 결과로 볼 때, 실시예 2의 모르타르를 양생시킨 결과물이 실시예 1 및 비교예들에 비해 월등히 우수한 것을 알 수 있다.From the results of Table 2, it can be seen that the result of curing the mortar of Example 2 is far superior to that of Example 1 and Comparative Examples.
또, 유동화제가 많이 첨가된 비교예2의 경우 냄새에 있어 다른 예들에 비해 그 결과가 매우 나쁜 것을 알 수 있다.Also, in Comparative Example 2 in which a fluidizing agent was added in a large amount, the result is much worse than the other examples in odor.
Claims (3)
밀도 3.10 ~ 3.20 g/㎤, 블레인 분말도 3,385 ~3,390 ㎠/g, 오토클레이브 팽창도 0.05%인 시멘트 100 중량부와,
상기 시멘트 100 중량부 대비 4.7 ~ 4.9 중량부의 조립률 2.1 ~ 2.5이며, 밀도가 0.13 ~ 0.15 g/㎤인 발포 폴리우레탄 분말과;
상기 시멘트 100 중량부 대비 170 ~ 190 중량부의 조립률 2.80 ~ 2.91인 잔골재와;
상기 시멘트 100 중량부 대비 18 ~ 22 중량부의 조립률 3.35 ~ 3.45인 부순 잔골재와;
상기 시멘트 100 중량부 대비 0.15 ~ 0.2 중량부의 감수제와;
상기 시멘트 100 중량부 대비 0.15~ 0.2 중량부의 증점제와;
상기 시멘트 100 중량부 대비 0.15~ 0.2 중량부의 계면활성제와;
상기 시멘트 100 중량부 대비 0.9 ~ 1.1 중량부의 유동화제와;
상기 시멘트 100 중량부 대비 85 ~ 93 중량부의 물;을 포함하여 구성된,
발포 폴리우레탄과 잔골재를 이용한 셀프 레벨링이 우수한 미장 모르타르.
In the plaster mortar,
100 parts by weight of cement having a density of 3.10 to 3.20 g / cm 3, a blast powder of 3,385 to 3,390 cm 2 / g and an autoclave expansion degree of 0.05%
A foamed polyurethane powder having a granulation ratio of 2.1 to 2.5 and a density of 0.13 to 0.15 g / cm 3 in an amount of 4.7 to 4.9 parts by weight based on 100 parts by weight of the cement;
Fine aggregate having an assembling rate of 2.80 to 2.91 in an amount of 170 to 190 parts by weight based on 100 parts by weight of the cement;
Fine aggregate having a granulation ratio of 3.35 to 3.45 in an amount of 18 to 22 parts by weight based on 100 parts by weight of the cement;
0.15 to 0.2 parts by weight of a water reducing agent relative to 100 parts by weight of the cement;
0.15 to 0.2 parts by weight of a thickener relative to 100 parts by weight of the cement;
0.15 to 0.2 parts by weight of a surfactant relative to 100 parts by weight of the cement;
0.9 to 1.1 parts by weight of a fluidizing agent relative to 100 parts by weight of the cement;
And 85 to 93 parts by weight of water relative to 100 parts by weight of the cement.
Self-leveling fine mortar with foamed polyurethane and fine aggregate.
상기 시멘트 100 중량부 대비 0.01 ~ 0.02 중량부의 감귤 껍질 분말이 더 포함된 것을 특징으로 하는,
발포 폴리우레탄과 잔골재를 이용한 셀프 레벨링이 우수한 미장 모르타르.The method according to claim 1,
And 0.01 to 0.02 parts by weight of citrus peel powder based on 100 parts by weight of the cement.
Self-leveling fine mortar with foamed polyurethane and fine aggregate.
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| WO2017017308A1 (en) * | 2015-07-30 | 2017-02-02 | Universidad De Burgos | Structural lightweight mortar with low porosity produced with polyurethane residues |
| KR101956233B1 (en) | 2018-09-07 | 2019-03-08 | 빌드켐 주식회사 | Moltar composition of polyurea resin composition and method of working the same |
| CN110342894A (en) * | 2019-07-25 | 2019-10-18 | 成都宏基建材股份有限公司 | A kind of novel water-proof gypsum based self-leveling material |
| KR102314657B1 (en) * | 2021-04-06 | 2021-10-19 | 주식회사 라온피플인더스트리 | Inorganic-based polymer mortar composition for floors with eco-friendly and high strength, and construction method of floors using the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2017017308A1 (en) * | 2015-07-30 | 2017-02-02 | Universidad De Burgos | Structural lightweight mortar with low porosity produced with polyurethane residues |
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| CN110342894A (en) * | 2019-07-25 | 2019-10-18 | 成都宏基建材股份有限公司 | A kind of novel water-proof gypsum based self-leveling material |
| KR102314657B1 (en) * | 2021-04-06 | 2021-10-19 | 주식회사 라온피플인더스트리 | Inorganic-based polymer mortar composition for floors with eco-friendly and high strength, and construction method of floors using the same |
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