KR20200114548A - Lightweight concrete composition - Google Patents
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- KR20200114548A KR20200114548A KR1020190036492A KR20190036492A KR20200114548A KR 20200114548 A KR20200114548 A KR 20200114548A KR 1020190036492 A KR1020190036492 A KR 1020190036492A KR 20190036492 A KR20190036492 A KR 20190036492A KR 20200114548 A KR20200114548 A KR 20200114548A
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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
- C04B18/02—Agglomerated materials, e.g. artificial aggregates
- C04B18/027—Lightweight 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
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/04—Silica-rich materials; Silicates
- C04B14/06—Quartz; Sand
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/30—Oxides other than silica
- C04B14/303—Alumina
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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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/0016—Granular materials, e.g. microballoons
- C04B20/002—Hollow or porous granular 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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/0016—Granular materials, e.g. microballoons
- C04B20/002—Hollow or porous granular materials
- C04B20/0036—Microsized or nanosized
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/40—Porous or lightweight materials
Abstract
Description
본 발명은 콘크리트 조성물에 관한 것으로, 더욱 상세하게는 경량이면서도 충분한 압축강도를 확보하고 양생시 수축에 따른 균열 발생을 대폭 감소시킬 수 있는 경량 콘크리트 조성물에 관한 것이다.The present invention relates to a concrete composition, and more particularly, to a lightweight concrete composition that can secure sufficient compressive strength while being lightweight and significantly reduce the occurrence of cracks due to shrinkage during curing.
콘크리트는 충전재(filler)인 골재를 시멘트 등의 결합재(binder)와 물의 수화물로 결합하여 일정한 형태를 구성하는 물질의 총칭이다. 상기 재료들은 재료의 특성에 따라 세분화할 수 있다. 일반골재의 경우 굵은골재와 잔골재로 분류되어 사용되는데, 입경이 5mm 미만인 것은 잔골재로, 5mm 이상인 것은 굵은골재로 분류된다.Concrete is a generic term for substances that form a certain shape by combining aggregates, which are fillers, into a binder such as cement and hydrates of water. These materials can be subdivided according to the properties of the material. In the case of general aggregates, they are classified into coarse aggregates and fine aggregates, and those with a particle diameter of less than 5mm are classified as fine aggregates, and those with a particle diameter of 5mm or more are classified as coarse aggregates.
또한, 골재는 종류에 따라 쇄석골재, 경량골재 및 순환골재로 나눌 수 있다. 경량 골재는 콘크리트나 모르타르의 골재 중 보통 골재보다 비중이 가벼운 것으로 말한다. 경량골재는 천연 경량골재, 인공 경량골재, 공업 부산물 등이 있다.In addition, aggregates can be divided into crushed stone aggregates, lightweight aggregates, and recycled aggregates according to their type. Lightweight aggregates are said to have a lighter specific gravity than ordinary aggregates among aggregates of concrete or mortar. Light weight aggregates include natural lightweight aggregates, artificial lightweight aggregates, and industrial by-products.
경량 콘크리트를 제조하는 방법으로는 경량골재를 이용하는 방법과 5mm 이하의 잔골재와 시멘트 등의 결합재에 공기를 불어 넣어 경량화시키는 방법이 알려져 있다. 이러한 일련의 경량화 작업은 건축물의 중량 감소에 의하여 기둥의 크기 등을 감소시켜 내부 공간을 확보하기 위한 경제적 이유 또는 단열, 층간 소음 감소, 방음 등을 위하여 개발되어 사용되고 있다.As a method of manufacturing lightweight concrete, a method of using a lightweight aggregate and a method of reducing weight by blowing air into a binder such as a fine aggregate of 5 mm or less and cement are known. This series of lightening work has been developed and used for economic reasons to secure an interior space by reducing the size of pillars by reducing the weight of the building, or for insulation, noise reduction, and sound insulation.
그런데, 종래의 경량 콘크리트는 일반 콘크리트에 비해 양생시 수축량이 커서 이로 인해 균열이 발생하고, 일반 콘크리트에 비해 압축강도가 떨어지는 문제점이 있다.However, the conventional lightweight concrete has a large shrinkage during curing compared to general concrete, resulting in cracks, and has a problem in that the compressive strength is lower than that of ordinary concrete.
본 발명의 목적은, 일반적으로 경량 콘크리트에서 발생하는 압축강도 저하 및 수축량 증가에 따른 균열을 대폭 감소시킬 수 있는 경량 콘크리트 조성물을 제공하는 것이다An object of the present invention is to provide a lightweight concrete composition that can significantly reduce cracks due to a decrease in compressive strength and an increase in shrinkage generally occurring in lightweight concrete.
본 발명이 해결하고자 하는 과제는 이상에서 언급한 과제(들)로 제한되지 않으며, 언급되지 않은 또 다른 과제(들)은 아래의 기재로부터 당업자에게 명확하게 이해될 수 있을 것이다.The problem to be solved by the present invention is not limited to the problem(s) mentioned above, and another problem(s) not mentioned will be clearly understood by those skilled in the art from the following description.
상기 목적은, 본 발명에 따라, 수경성 결합재 및 경량골재를 포함하고, 상기 경량골재는 미소중공구체인 것을 특징으로 하는 경량 콘크리트 조성물에 의해 달성된다.The above object, according to the present invention, comprising a hydraulic binder and a lightweight aggregate, the lightweight aggregate is achieved by a lightweight concrete composition, characterized in that the micro-hollow sphere.
바람직하게, 상기 미소중공구체는 속이 빈 구 형상으로 비중이 0.3~0.8 이고 입자 지름이 500㎛ 이하일 수 있고, 더 바람직하게 상기 미소중공구체는 5~100㎛ 범위의 입자 지름을 가질 수 있다.Preferably, the micro-hollow spheres may have a specific gravity of 0.3 to 0.8 and a particle diameter of 500 μm or less in a hollow spherical shape, and more preferably, the micro-hollow spheres may have a particle diameter in the range of 5 to 100 μm.
바람직하게, 상기 미소중공구체는 산화알루미늄(Al2O3), 이산화규소(SiO2), 산화칼슘(CaO) 및 삼산화황(SO3)을 주요 구성성분으로 포함할 수 있다. 상기 미소중공구체의 단위 중량에 있어서, 상기 산화알루미늄(Al2O3)는 24~34중량%, 상기 이산화규소(SiO2)는 58~68중량%, 상기 산화칼슘(CaO)는 1~3중량% 및 상기 삼산화황(SO3) 0.1~0.5중량%로 구성되는 것이 바람직하다.Preferably, the micro-hollow sphere may include aluminum oxide (Al 2 O 3 ), silicon dioxide (SiO 2 ), calcium oxide (CaO), and sulfur trioxide (SO 3 ) as main constituents. In the unit weight of the micro-hollow sphere, the aluminum oxide (Al 2 O 3 ) is 24 to 34% by weight, the silicon dioxide (SiO 2 ) is 58 to 68% by weight, the calcium oxide (CaO) is 1 to 3 It is preferably composed of 0.1 to 0.5% by weight and the sulfur trioxide (SO 3 ).
바람직하게, 상기 경량 콘크리트 조성물은 상기 수경성 결합재인 시멘트 550 ~ 650kg/m3, 물 140 ~ 200 kg/m3, 일반골재로서 잔골재(모래) 350 ~ 450 kg/m3, 일반골재로서 굵은골재(자갈) 350 ~ 450 kg/m3 및 상기 경량골재로서 미소중공구체 170 ~ 270 kg/m3로 배합될 수 있다..Preferably, the lightweight concrete composition is the hydraulic binder of cement 550 to 650 kg/m 3 , water 140 to 200 kg/m 3 , fine aggregate (sand) 350 to 450 kg/m 3 as general aggregate, coarse aggregate ( Gravel) 350 ~ 450 kg / m 3 and as the lightweight aggregate may be blended with micro-hollow spheres 170 ~ 270 kg / m 3 .
본 발명은, 경량 콘크리트 조성물에 있어서 수경성 결합재와 경량골재로서 미소중공구체를 포함으로써, 일반적으로 경량 콘크리트에서 발생하는 압축강도 저하 및 수축량 증가에 따른 균열을 대폭 감소시킬 수 있다.In the present invention, by including the micro-hollow spheres as a hydraulic binder and a lightweight aggregate in a lightweight concrete composition, it is possible to significantly reduce cracks due to a decrease in compressive strength and an increase in shrinkage generally occurring in lightweight concrete.
본 발명의 이점 및/또는 특징, 그리고 그것들을 달성하는 방법은 첨부되는 도면과 함께 상세하게 후술되어 있는 실시예들을 참조하면 명확해질 것이다. 그러나, 본 발명은 이하에서 개시되는 실시예들에 한정되는 것이 아니라 서로 다른 다양한 형태로 구현될 것이며, 단지 본 실시예들은 본 발명의 개시가 완전하도록 하며, 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에게 발명의 범주를 완전하게 알려주기 위해 제공되는 것이며, 본 발명은 청구항의 범주에 의해 정의될 뿐이다. 명세서 전체에 걸쳐 동일 참조 부호는 동일 구성요소를 지칭한다.Advantages and/or features of the present invention, and a method of achieving them will become apparent with reference to the embodiments described later in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in a variety of different forms, only these embodiments make the disclosure of the present invention complete, and common knowledge in the technical field to which the present invention pertains. It is provided to completely inform the scope of the invention to those who have, and the invention is only defined by the scope of the claims. The same reference numerals refer to the same elements throughout the specification.
이하에서는 첨부된 도면을 참조하여 본 발명의 실시예들을 상세히 설명하기로 한다.Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
본 발명의 일 실시예에 따른 경량 콘크리트 조성물은 수경성 결합재와 경량골재를 포함하고, 이때 상기 경량골재는 미소중공구체인 것을 기술적 특징으로 한다. 또한, 본 실시예에 따른 경량 콘크리트 조성물은 일반골재로서 굵은골재와 잔골재를 더 포함한다.The lightweight concrete composition according to an embodiment of the present invention includes a hydraulic binder and a lightweight aggregate, wherein the lightweight aggregate is a micro-hollow sphere. In addition, the lightweight concrete composition according to the present embodiment further includes a coarse aggregate and a fine aggregate as a general aggregate.
상기 수경성 결합재는 포틀랜드 시멘트(1종, 2종, 3종, 4종, 5종) 혹은 슬래그 시멘트, 고미분말 시멘트(블레인 값 4,000~12,000cm2/g), 다성분계 혼합시멘트, 속경성 시멘트, 알루미나 시멘트, 초속경 시멘트, 지오폴리머계 결합재, 저알칼리 시멘트(알칼리 0.65 이하)를를 단독 또는 2종류 이상 혼합하여 제조될 수 있다.The hydraulic binder is Portland cement (1 type, 2 types, 3 types, 4 types, 5 types) or slag cement, high-fine powder cement (blin value 4,000 to 12,000 cm 2 /g), multi-component mixed cement, fast-setting cement, Alumina cement, ultrafast cement, geopolymer-based binder, and low-alkali cement (alkali 0.65 or less) can be prepared by mixing alone or two or more.
상기 수경성 결합재에는 플라이 애쉬, 고로 슬래그 미분말, 실리카 흄, 석회석 미분말, SiO2 분말, Al2O3 분말이 첨가 사용될 수 있다.Fly ash, blast furnace slag fine powder, silica fume, limestone fine powder, SiO 2 powder, Al 2 O 3 powder may be added to the hydraulic binder.
본 발명에서 경량골재는 전술한 바와 같이 미소중공구체로 제공되는데, 이때 미소중공구체는 속이 빈 구 형상이다. 그리고, 미소중공구체는 비중이 0.3~0.8 이고 입자 지름이 500㎛ 이하인 것이 바람직하다. 더 바람직하게는 미소중공구체는 5~100㎛ 범위의 입자 지름을 갖는다. 미소중공구체의 평균 입경은 80㎛ 정도이다.In the present invention, the lightweight aggregate is provided as a micro-hollow sphere as described above, wherein the micro-hollow sphere has a hollow spherical shape. In addition, the micro-hollow spheres preferably have a specific gravity of 0.3 to 0.8 and a particle diameter of 500 μm or less. More preferably, the micro-hollow spheres have a particle diameter in the range of 5 to 100 μm. The average particle diameter of the micro-hollow spheres is about 80 μm.
더 나아가, 본 발명에서 미소중공구체는 산화알루미늄(Al2O3), 이산화규소(실리카, SiO2), 산화칼슘(CaO) 및 삼산화황(SO3)을 주요 구성성분으로 포함한다. 그리고 상기 미소중공구체의 단위 중량에 있어서, 상기 산화알루미늄(Al2O3)는 24~34중량%, 상기 이산화규소(SiO2)는 58~68중량%, 상기 산화칼슘(CaO)는 1~3중량% 및 상기 삼산화황(SO3) 0.1~0.5중량%로 구성되는 것을 기술적 특징으로 한다.Furthermore, in the present invention, the micro-hollow spheres include aluminum oxide (Al 2 O 3 ), silicon dioxide (silica, SiO 2 ), calcium oxide (CaO) and sulfur trioxide (SO 3 ) as main constituents. And in the unit weight of the micro-hollow sphere, the aluminum oxide (Al 2 O 3 ) is 24 to 34% by weight, the silicon dioxide (SiO 2 ) is 58 to 68% by weight, the calcium oxide (CaO) is 1 to It is a technical feature that consists of 3 % by weight and 0.1 to 0.5% by weight of the sulfur trioxide (SO 3 ).
상기 미소중공구체를 경량골재로 포함하는 본 발명의 일 실시예에 따른 경량 콘크리트 조성물은, 수경성 결합재인 시멘트 550 ~ 650kg/m3, 물 140 ~ 200 kg/m3, 일반골재로서 잔골재(모래) 350 ~ 450 kg/m3, 일반골재로서 굵은골재(자갈) 350 ~ 450 kg/m3 및 경량골재로서 미소중공구체 170 ~ 270 kg/m3로 배합되는 것이 바람직하며, 고성능 유동화제 등이 더 첨가될 수 있다.The lightweight concrete composition according to an embodiment of the present invention comprising the micro-hollow spheres as lightweight aggregates, cement 550 ~ 650kg/m 3 , water as a hydraulic binder, 140 ~ 200 kg/m 3 , fine aggregates (sand) as general aggregates 350 ~ 450 kg/m 3 , It is preferable to mix with coarse aggregate (gravel) 350 ~ 450 kg/m 3 as a general aggregate and 170 ~ 270 kg/m 3 of micro-hollow spheres as a lightweight aggregate, and a high-performance fluidizing agent is more Can be added.
위와 같은 본 발명의 경량 콘크리트 조성물은 일반 경량 콘크리트 조성물에 비해 물시멘트비(W/C)가 낮아 압축강도가 우수하다. 일반 경량 콘트리트 조성물의 물시멘트비(W/C)는 통상 35% 정도인 것에 비해 본 발명의 경량 콘크리트 조성물의 물시멘트비(W/C)는 28% 정도이다. 특히, 본 발명에서 경량골재인 미소중공구체는 실질적으로 구형 구조를 가지므로, 경량 콘크리트에 있어서 작업성이 우수할 뿐만 아니라 안정적인 압축강도를 확보가 가능하다. The lightweight concrete composition of the present invention as described above has a lower water cement ratio (W/C) than that of a general lightweight concrete composition and has excellent compressive strength. The water cement ratio (W/C) of the general lightweight concrete composition is usually about 35%, whereas the water cement ratio (W/C) of the lightweight concrete composition of the present invention is about 28%. In particular, since the micro-hollow sphere, which is a lightweight aggregate in the present invention, has a substantially spherical structure, it is possible to secure stable compressive strength as well as excellent workability in lightweight concrete.
본 발명의 경량골재인 미소중공구체는 일반 경량골재보다 흡수율이 30 ~ 40% 높고 경량 콘크리트 조성물 전체 중량에 대해 5중량% 미만으로 충분한 콘크리트 가사시간의 확보가 가능해진다. The micro-hollow sphere, the lightweight aggregate of the present invention, has a water absorption rate of 30 to 40% higher than that of a general lightweight aggregate and is less than 5% by weight based on the total weight of the lightweight concrete composition, so that sufficient concrete pot life can be secured.
또한, 일반 경량골재의 경우 높은 흡수율로 인해 콘크리트 펌프 압송이 어려우나, 본 발명의 경량골재인 미소중공구체의 경우 높은 압송 성능을 발휘한다.In addition, in the case of a general lightweight aggregate, it is difficult to pressurize a concrete pump due to a high water absorption rate, but in the case of the micro-hollow sphere, which is a lightweight aggregate of the present invention, a high pressure conveyance performance is exhibited.
이상과 같이 실시예들이 비록 한정된 실시예와 도면에 의해 설명되었으나, 해당 기술분야에서 통상의 지식을 가진 자라면 상기의 기재로부터 다양한 수정 및 변형이 가능하다. 예를 들어, 설명된 기술들이 설명된 방법과 다른 순서로 수행되거나, 다른 구성요소 또는 균등물에 의하여 대치되거나 치환되더라도 적절한 결과가 달성될 수 있다. 그러므로, 다른 구현들, 다른 실시예들 및 청구범위와 균등한 것들도 후술하는 청구범위의 범위에 속한다.As described above, although the embodiments have been described by the limited embodiments and drawings, various modifications and variations are possible from the above description by those of ordinary skill in the art. For example, even if the described techniques are performed in a different order from the described method, or are substituted or substituted by other components or equivalents, an appropriate result may be achieved. Therefore, other implementations, other embodiments, and equivalents to the claims fall within the scope of the following claims.
Claims (6)
경량골재를 포함하고,
상기 경량골재는 미소중공구체인 것을 특징으로 하는 경량 콘크리트 조성물.
Hydraulic binder; And
Including lightweight aggregate,
The lightweight concrete composition, characterized in that the lightweight aggregate is a micro-hollow sphere.
상기 미소중공구체는 속이 빈 구 형상으로 비중이 0.3~0.8 이고 입자 지름이 500㎛ 이하인 것을 특징으로 하는 경량 콘크리트 조성물.
The method of claim 1,
The micro-hollow sphere is a lightweight concrete composition, characterized in that a hollow sphere shape, specific gravity of 0.3 to 0.8 and a particle diameter of 500㎛ or less.
상기 미소중공구체는 5~100㎛ 범위의 입자 지름을 갖는 것을 특징으로 하는 경량 콘크리트 조성물.
The method of claim 2,
The micro-hollow sphere is a lightweight concrete composition, characterized in that having a particle diameter in the range of 5 ~ 100㎛.
상기 미소중공구체는,
산화알루미늄(Al2O3), 이산화규소(SiO2), 산화칼슘(CaO) 및 삼산화황(SO3)을 주요 구성성분으로 포함하는 것을 특징으로 하는 경량 콘크리트 조성물
The method of claim 1,
The micro-hollow sphere,
A lightweight concrete composition comprising aluminum oxide (Al 2 O 3 ), silicon dioxide (SiO 2 ), calcium oxide (CaO) and sulfur trioxide (SO 3 ) as main components
상기 미소중공구체의 단위 중량에 있어서,
상기 산화알루미늄(Al2O3)는 24~34중량%, 상기 이산화규소(SiO2)는 58~68중량%, 상기 산화칼슘(CaO)는 1~3중량% 및 상기 삼산화황(SO3) 0.1~0.5중량%로 구성되는 것을 특징으로 하는 경량 콘크리트 조성물.
The method of claim 4,
In the unit weight of the micro-hollow sphere,
The aluminum oxide (Al 2 O 3 ) is 24 to 34 wt%, the silicon dioxide (SiO 2 ) is 58 to 68 wt%, the calcium oxide (CaO) is 1 to 3 wt%, and the sulfur trioxide (SO 3 ) 0.1 Lightweight concrete composition, characterized in that consisting of ~0.5% by weight.
상기 경량 콘크리트 조성물은,
상기 수경성 결합재인 시멘트 550 ~ 650kg/m3, 물 140 ~ 200 kg/m3, 일반골재로서 잔골재(모래) 350 ~ 450 kg/m3, 일반골재로서 굵은골재(자갈) 350 ~ 450 kg/m3 및 상기 경량골재로서 미소중공구체 170 ~ 270 kg/m3로 배합되는 것을 특징으로 하는 경량 콘크리트 조성물.The method of claim 1,
The lightweight concrete composition,
The hydraulic binder of cement 550 ~ 650kg/m 3 , water 140 ~ 200 kg/m 3 , fine aggregate (sand) 350 ~ 450 kg/m 3 as general aggregate, coarse aggregate (gravel) 350 ~ 450 kg/m as general aggregate 3 and a lightweight concrete composition, characterized in that blended with 170 ~ 270 kg / m 3 micro-hollow spheres as the lightweight aggregate.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102308504B1 (en) * | 2020-12-31 | 2021-10-01 | 황인동 | Concrete composition using hollow bead and manufacturing method thereof |
| CN116813373A (en) * | 2023-07-04 | 2023-09-29 | 西安建筑科技大学 | Lightweight aggregate concrete with high temperature stability and high strength, and preparation and application thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102308504B1 (en) * | 2020-12-31 | 2021-10-01 | 황인동 | Concrete composition using hollow bead and manufacturing method thereof |
| CN116813373A (en) * | 2023-07-04 | 2023-09-29 | 西安建筑科技大学 | Lightweight aggregate concrete with high temperature stability and high strength, and preparation and application thereof |
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