KR20110094903A - Coated eps lightweight aggregate and manufacturing process of incombustible concrete panel using the same - Google Patents
Coated eps lightweight aggregate and manufacturing process of incombustible concrete panel using the same Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
- C04B20/02—Treatment
- C04B20/026—Comminuting, e.g. by grinding or breaking; Defibrillating fibres other than asbestos
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/14—Producing shaped prefabricated articles from the material by simple casting, the material being neither forcibly fed nor positively compacted
- B28B1/16—Producing shaped prefabricated articles from the material by simple casting, the material being neither forcibly fed nor positively compacted for producing layered articles
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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
- 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
- C04B18/06—Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
- C04B18/061—Ashes from fluidised bed furnaces
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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
- C04B18/20—Waste materials; Refuse organic from macromolecular compounds
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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
- C04B20/10—Coating or impregnating
- C04B20/1055—Coating or impregnating with inorganic materials
- C04B20/1077—Cements, e.g. waterglass
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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
Abstract
Description
본 발명은 단열성과 경량성이 우수한 EPS비드를 건축용 골재로 사용할 수 있도록 EPS비드 표면을 코팅재로 코팅한 골재와 이러한 골재를 바람직하게 이용하여 난연성 경량콘크리트 패널로 제조하는 방법에 관한 것이다.
The present invention relates to an aggregate coated with an EPS bead surface with a coating material so that EPS beads having excellent heat insulation and lightness can be used as building aggregates, and a method of manufacturing a flame retardant lightweight concrete panel using such aggregates.
골재는 콘크리트(시멘트콘크리트, 아스팔트콘크리트 등)를 구성하는 주요 구성요소로서 골재의 품질은 콘크리트의 품질로 이어지므로, 콘크리트의 요구성능을 고려하여 적절한 품질을 가지는 골재를 채택해야 한다.Aggregate is the main component of concrete (cement concrete, asphalt concrete, etc.). Since the quality of aggregate leads to the quality of concrete, it is necessary to adopt aggregate having appropriate quality in consideration of the required performance of concrete.
경량골재는 일반 골재보다 비중이 작은 것으로, 경량골재는 가벼운 콘크리트와 모르타르를 만들 수 있기 때문에 구조물의 경량화에 기여한다. 경량골재는 생산방법에 따라 천연골재(화산자갈, 화산모래 등)와 인공골재, 부산물골재(석탄재, 팽창슬래그)로 구분되는데, 인공골재는 통상 번거로운 소성과정을 거쳐 제작되기 때문에 가격이 비싼 편이다.Light weight aggregates have a smaller specific gravity than general aggregates, and lightweight aggregates can make light concrete and mortar, thereby contributing to the weight reduction of the structure. Lightweight aggregates are classified into natural aggregates (volcanic gravel, volcanic sand, etc.), artificial aggregates, and by-product aggregates (coal aggregates, expanded slag), depending on the production method. Artificial aggregates are expensive because they are usually manufactured through a cumbersome firing process. .
한편 EPS(Expandable Polystyrene)는 발포 폴리스티렌으로 보통 스티로폼으로 불리는데, 단열재, 포장재 등 다양한 용도로 이용된다. 한번 사용한 EPS는 보통 폐기되는데, 이렇게 폐기되는 폐 EPS의 자원 재활용에 관한 연구가 필요한 상황이다. 이에 본 발명자는 폐 EPS의 재활용을 위해 EPS를 이용한 경량골재를 개발하게 되었다.
EPS (Expandable Polystyrene) is expanded polystyrene, commonly referred to as styrofoam, and is used for various purposes such as insulation and packaging materials. Once used, EPS is usually discarded, which requires a study on the recycling of waste EPS. The present inventors have developed a lightweight aggregate using EPS for recycling of waste EPS.
본 발명은 상기한 종래 경량골재의 문제를 개선하고자 개발된 것으로서, 다음과 같은 기술적 과제를 갖는다.The present invention has been developed to improve the problems of the conventional lightweight aggregate, has the following technical problems.
첫째, 경량 소재인 EPS를 골재로 이용할 수 있는 방안을 제공하고자 한다.First, it is intended to provide a method that can be used as the aggregate, a lightweight material EPS.
둘째, 별도의 소성과정을 거치지 않고 간단하게 경제적으로 생산할 수 있는 경량골재를 제공하고자 한다.Second, to provide a lightweight aggregate that can be produced simply and economically without going through a separate firing process.
셋째, 균일한 품질의 난연성 경량콘크리트 패널을 제조하는 방법을 제공하고자 한다.
Third, to provide a method for manufacturing a flame retardant lightweight concrete panel of uniform quality.
상기한 기술적 과제를 해결하기 위해 본 발명은 EPS 코팅 경량골재와 이를 이용한 경량콘크리트 패널 제조방법을 제공한다.In order to solve the above technical problem, the present invention provides an EPS coated lightweight aggregate and a lightweight concrete panel manufacturing method using the same.
본 발명에 따른 EPS 코팅 경량골재는, 2~15mm의 EPS비드 표면에 코팅층이 형성된 것으로, 상기 코팅층은 물, 1~2mm의 바텀애쉬, 시멘트를 포함하여 조성된 코팅재로 형성되는 것을 특징으로 한다. 여기서 EPS비드는 폐EPS 자재를 파쇄한 것일 수 있으며, 코팅재는 물 38~45중량%, 1~2mm의 바텀애쉬 10~30중량%, 시멘트 25~52중량%를 포함하여 조성할 수 있다.EPS coating lightweight aggregate according to the present invention, the coating layer is formed on the surface of the EPS bead of 2 ~ 15mm, the coating layer is characterized in that it is formed of a coating material comprising water, 1 ~ 2mm bottom ash, cement. Here, the EPS beads may be shredded waste EPS material, the coating material may be composed of 38 to 45% by weight of water, 10 to 30% by weight of bottom ash of 1 ~ 2mm, 25 to 52% by weight of cement.
본 발명에 따른 경량콘크리트 패널의 제조방법은, 물, 1~2mm의 바텀애쉬, 시멘트를 포함하여 조성된 코팅재로 2~15mm의 EPS비드를 코팅하여 EPS 코팅 경량골재를 제조하는 제1단계; 패널 형틀 내부에 EPS 코팅 경량골재를 포석하는 제2단계; 패널 형틀 내부에 시멘트페이스트를 붓는 제3단계; 양생한 후 패널 형틀을 제거하는 제4단계;로 이루어지는 것을 특징으로 한다.
Method for manufacturing a lightweight concrete panel according to the present invention, the first step of producing a EPS coated lightweight aggregate by coating the EPS beads of 2 ~ 15mm with a coating material composed of water, 1 ~ 2mm bottom ash, cement; A second step of paving the EPS-coated lightweight aggregate in the panel mold; Pouring cement paste into the panel mold; It characterized by consisting of; a fourth step of removing the panel mold after curing.
본 발명에 따르면 다음과 같은 효과를 기대할 수 있다.According to the present invention, the following effects can be expected.
첫째, 경량 소재인 EPS를 골재로 유용하게 이용할 수 있다.First, the lightweight EPS can be usefully used as aggregate.
둘째, 폐자원인 EPS를 재활용할 수 있기 때문에 자원절약과 환경보존에 일조할 수 있다.Second, the EPS can be recycled, contributing to resource conservation and environmental conservation.
셋째, 별도의 소성 과정없이 간단한 공정을 거치는 것으로 경량골재를 경제적으로 생산할 수 있다.Third, the lightweight aggregate can be economically produced by going through a simple process without a separate firing process.
넷째, 경량골재를 고르게 분포시키면서 균일한 품질의 경량콘크리트 패널로 용이하게 생산할 수 있다.Fourth, it can be easily produced as a lightweight concrete panel of uniform quality while evenly distributed lightweight aggregate.
다섯째, 경량성과 단열성에서 우수한 성능을 발휘하는 EPS와 바텀애쉬를 동시에 이용하고 특히 바텀애쉬를 난연성에서도 우수한 성능을 발휘하기 때문에, 본 발명에 따르면 경량성, 단열성, 난연성에서 두루 우수한 성능을 발휘하는 경량콘크리트 패널을 제공할 수 있다.
Fifth, since both the EPS and the bottom ash, which exhibits excellent performance in light weight and insulation properties, and the bottom ash exhibits excellent performance in flame retardancy, in particular, according to the present invention, the light weight exhibits excellent performance in light weight, heat insulation, and flame retardancy. It can provide concrete panels.
도 1은 본 발명에 따른 EPS 코팅 경량골재 생산에 이용되는 바텀애쉬를 촬영한 사진이다.
도 2는 본 발명에 따른 EPS 코팅 경량골재를 촬영한 사진이다.
도 3은 EPS비드를 사용하여 제조한 콘크리트패널을 촬영한 사진이다.
도 4는 본 발명에 따른 EPS 코팅 경량골재를 사용하여 제조한 콘크리트패널을 촬영한 사진이다.1 is a photograph of a bottom ash used for producing an EPS coated lightweight aggregate according to the present invention.
Figure 2 is a photograph of the EPS coated lightweight aggregate according to the present invention.
3 is a photograph of a concrete panel manufactured using EPS beads.
Figure 4 is a photograph of a concrete panel manufactured using the EPS coated lightweight aggregate according to the present invention.
본 발명은 EPS 코팅 경량골재와 이에 의한 경량콘크리트 패널 제조방법에 관한 것으로, 이하부터는 이 둘을 구분하여 설명한다.
The present invention relates to a EPS coated lightweight aggregate and a method for manufacturing a lightweight concrete panel thereby, from which the two will be described separately.
1. One. EPSEPS 코팅 경량골재 Coated Lightweight Aggregate
본 발명은 골재 크기의 EPS(Expandable Polystyrene)비드를 중심기재로 하여 EPS비드 표면에 코팅층을 형성시킨다는데 기술적 특징이 있다. EPS비드 표면을 코팅재로 코팅한 결과 단위중량을 증대시켜 골재로 이용할 수 있도록 한 것이다. 다시 말해 EPS비드는 상당히 가볍기 때문에 그대로 골재로 사용할 경우 시멘트계 혼합물(모르타르, 콘크리트)을 제조하는 과정에서 쉽게 부상(浮上)하여 다른 재료와 섞이지 못한 채 재료분리를 일으키게 되는데, 본 발명에서는 EPS비드를 코팅층으로 피복하여 단위중량을 증대시킴으로써 골재로 이용가능케 한 것이다. 나아가 본 발명에 따른 EPS 코팅 경량골재는 시멘트계 결합재에 의한 코팅재로 EPS 비드를 코팅한 것이기 때문에 시멘트계 혼합물(모르타르, 콘크리트)을 제조하는 과정에서 우수한 부착강도를 발휘하면서 시멘트페이스트와 결합할 것이다. The present invention has a technical feature to form a coating layer on the surface of the EPS bead by using the EPS (Expandable Polystyrene) beads of the aggregate size. As a result of coating the surface of the EPS bead with a coating material it is to be used as aggregate by increasing the unit weight. In other words, when the EPS beads are fairly light, they are easily floated in the process of manufacturing cement-based mixtures (mortar, concrete) when they are used as aggregates, causing material separation without mixing with other materials. It can be used as aggregate by increasing the unit weight by coating. Furthermore, the EPS-coated lightweight aggregate according to the present invention will combine with the cement paste while exhibiting excellent adhesion strength in the process of manufacturing cement-based mixtures (mortar, concrete) because it is coated with EPS beads with a cement-based coating material.
본 발명에 따른 경량골재에서 중심기재가 되는 EPS비드는 2~15mm 입경을 가지는 것으로 준비한다. 그래야 코팅층을 피복하면 3~20mm의 골재로 만들어 건축용 골재로 바람직하게 이용할 수 있다. 나아가 EPS비드는 버려지는 폐EPS 자재를 적절히 파쇄한 것으로도 채용할 수 있는데, 이 경우 자원재활용 자원에서 유리한 것은 물론 EPS비드의 입형이 불규칙하여 코팅이 잘 이루어질 것으로 기대된다.In the light weight aggregate according to the present invention, the EPS bead is prepared to have a particle diameter of 2 to 15mm. So that coating the coating layer is made of aggregate of 3 ~ 20mm can be preferably used as construction aggregate. In addition, EPS beads can be employed as a suitable crushed waste EPS material, which is advantageous in the resource recycling resources, as well as the irregular shape of EPS beads is expected to be well coated.
본 발명에 따른 경량골재에서 EPS비드를 피복하는 코팅층은 물, 1~2mm의 바텀애쉬, 시멘트를 포함하는 코팅재로 형성한다. 코팅재는 1~2mm의 바텀애쉬를 포함하기 때문에, 코팅층은 바텀애쉬에 의해 불규칙한 입형으로 형성되고 아울러 경량성과 단열성 및 난연성을 나타낼 것이다.In the lightweight aggregate according to the present invention, the coating layer for coating the EPS beads is formed of a coating material including water, a bottom ash of 1-2 mm, and cement. Since the coating material includes a bottom ash of 1 to 2 mm, the coating layer will be irregularly shaped by the bottom ash and will also exhibit light weight, heat insulation, and flame retardancy.
코팅재에서 바텀애쉬가 2mm보다 크면 EPS비드의 피복이 어렵고, 1mm보다 작으면 코팅층을 소정 두께로 형성하는 것이 어렵고 다공질 바텀애쉬에 의한 경량성과 단열성, 난연성 등의 효과를 기대하기 어렵다.If the bottom ash is greater than 2mm in the coating material, it is difficult to coat the EPS beads, and if it is smaller than 1mm, it is difficult to form the coating layer in a predetermined thickness, and it is difficult to expect the effects of light weight, heat insulation, flame retardancy, etc. by the porous bottom ash.
코팅재에서 시멘트는 결합재로 주요한 역할을 하며, 레미콘에 남은 슬러리로 치환하여 이용할 수 있다. 코팅재는 물 38~45중량%, 1~2mm의 바텀애쉬 10~30중량%, 시멘트 25~52중량%를 포함하여 조성하는 것이 바람직하다. 이러한 조성비는 배합실험을 통한 결과로서, 물은 코팅재의 유동성을 고려한 범위이고, 시멘트와 바텀애쉬는 코팅재의 부착력과 표면경도를 고려한 범위이다. 이러한 조성비에 따르면 소정 두께의 코팅층을 소정의 강도로 형성시키는데 적합하다.
Cement in the coating material plays a major role as a binder, it can be used to replace the remaining slurry in the ready-mixed concrete. The coating material is preferably composed of 38 to 45% by weight of water, 10 to 30% by weight of bottom ash of 1 to 2mm, and 25 to 52% by weight of cement. This composition ratio is the result of the mixing experiment, water is the range in consideration of the fluidity of the coating material, cement and bottom ash is the range in consideration of the adhesion and surface hardness of the coating material. According to such a composition ratio, it is suitable to form the coating layer of predetermined thickness with predetermined strength.
[실시예1] EPS 코팅 경량골재의 제조Example 1 Preparation of EPS Coated Lightweight Aggregate
폐 EPS자재를 파쇄하여 얻은 EPS비드로 EPS 코팅 경량골재를 제조하였으며, 구체적인 제조과정은 다음과 같다. EPS coated lightweight aggregate was manufactured from EPS beads obtained by shredding waste EPS materials, and the specific manufacturing process is as follows.
(1)2~15mm의 EPS비드와, 물 40중량%, 1~2mm의 바텀애쉬 10중량%, 시멘트 45중량%의 조성으로 코팅재의 원재료를 준비하고, EPS비드와 코팅재는 10:1의 체적비로 준비하였다. 도 1은 코팅재의 원재료로 이용된 바텀애쉬를 보여준다.(1) The raw material of the coating material is prepared with the composition of EPS beads of 2 to 15 mm, 40% by weight of water, 10% by weight of bottom ash of 1 to 2 mm, and 45% by weight of cement. It was prepared. Figure 1 shows the bottom ash used as a raw material of the coating material.
(2)EPS비드를 믹서기에 투입하고, 이어 물과 시멘트를 믹서기에 투입하여 1차 교반한 후 바텀애쉬를 투입하여 2차 교반하였다.. 이와 같은 과정으로 EPS비드 표면을 코팅재로 1차 코팅하였으며, 1차 코팅에는 전체 코팅재의 40%를 이용하였다.(2) The EPS beads were added to the blender, and then water and cement were added to the blender, followed by first stirring. Then, the bottom ash was added to the second stirring. In this manner, the surface of the EPS beads was first coated with a coating material. For the primary coating, 40% of the total coating material was used.
(3)1차 코팅한 후 12시간 습윤양생하고, 이어 2차 코팅하였다. 2차 코팅에는 나머지 코팅재 60%를 이용하였다.(3) Wet curing for 12 hours after primary coating, followed by secondary coating. 60% of the remaining coating material was used for the secondary coating.
(4)2차 코팅한 후 상온에서 건조하였으며, 이어 후 믹서기를 간헐적으로 가동(on/off 반복)하면서 서로 붙어있는 골재들을 떼어냈다. 이로써 도 2와 같은 EPS 코팅 경량골재로 완성되었다.
(4) After the second coating was dried at room temperature, and then the aggregate was stuck to each other while the mixer was intermittently operated (on / off repeat). This was completed with the EPS coated lightweight aggregate as shown in FIG.
[실시예2] EPS 코팅 경량골재의 물성 Example 2 Physical Properties of EPS Coated Lightweight Aggregate
상기 [실시예1]에 따라 제조된 EPS 코팅 경량골재의 비중을 코팅 전의 EPS비드와 비교 조사하였다. 조사 결과 코팅 전후 비중이 0.02~0.04에서 0.91~1.12로 크게 증가한 것으로 확인되었다. 즉, EPS 코팅 경량골재가 EPS비드에 비해 단위중량이 50배 정도 증가한 것이다. 이와 같은 단위중량 증대에 따라 EPS 코팅 경량골재는 시멘트계 혼합물(모르타르, 콘크리트)을 제조하는 과정에서 쉽게 부상하지 않고 재료분리를 일으키지 않을 것이며, 그 결과 다른 재료와 고르게 섞이게 될 것이다.
The specific gravity of the EPS coated lightweight aggregate prepared according to [Example 1] was compared with the EPS beads before coating. The results showed that the specific gravity before and after coating increased significantly from 0.02 ~ 0.04 to 0.91 ~ 1.12. In other words, EPS coated lightweight aggregate is 50 times more unit weight than EPS beads. With this increase in unit weight, the EPS-coated lightweight aggregate will not easily rise during the manufacturing of cement-based mixtures (mortar, concrete) and will not cause material separation, resulting in even mixing with other materials.
[실시예3] EPS 코팅 경량골재를 이용한 굳지않은 콘크리트의 물성Example 3 Physical Properties of Solid Concrete Using EPS Coated Lightweight Aggregate
본 발명에 따른 EPS 코팅 경량골재의 적용성을 확인하기 위해 상기 [실시예2]에 따라 제조된 EPS 코팅 경량골재로 하기 [표 1]과 같은 배합설계로 콘크리트를 배합한 후 굳지않은 콘크리트의 물성을 조사하였다. 아울러 EPS비드를 조사 결과는 하기 [표 2]와 같다.
In order to confirm the applicability of the EPS coated lightweight aggregate according to the present invention, the EPS coated lightweight aggregate manufactured according to the above [Example 2], after mixing the concrete by the mixing design as shown in Table 1 below Was investigated. In addition, the results of the survey of the EPS beads are shown in Table 2 below.
비중Slurry (Water + Cement + Foam)
importance
상기 표 2에서와 같이 EPS비드를 사용한 콘크리트(EC)는 단위중량이 0.68g/㎤으로 보였으며, EPS 코팅 경량골재를 사용한 콘크리트(CEC)는 단위중량이 1.23g/㎤을 보였다. 특히 EPS비드를 사용한 콘크리트(EC)는 단위중량이 0.68g/㎤으로 상당히 작아서 믹싱과정에서 EPS비드가 부상(浮上)하는 등 재료분리 현상이 발생하였으나, EPS 코팅 경량골재를 사용한 콘크리트(CEC)는 재료분리현상 없이 정상적인 배합이 가능했다. 또한 EPS비드를 사용한 콘크리트(EC)와 비교할 때 EPS 코팅 경량골재를 사용한 콘크리트(CEC)에서 길이변화율, 플로우, 압축강도가 개선된 것으로 확인되었다. 이러한 결과는 EPS비드를 사용한 콘크리트(EC)에서는 EPS비드 표면에 시멘트페이스트가 제대로 접착되지 않아 공극이 많이 생긴 반면, EPS 코팅 경량골재를 사용한 콘크리트(CEC)는 EPS 코팅 경량골재와 시멘트페이스트이 결합력이 우수해져 미세한 공극이 발생하지 않았기 때문인 것으로 판단된다.
As shown in Table 2, the concrete (EC) using EPS beads showed a unit weight of 0.68 g / cm 3, and the concrete (CEC) using EPS coated lightweight aggregate showed a unit weight of 1.23 g / cm 3. Particularly, the concrete (EC) using EPS beads was considerably smaller as the unit weight was 0.68g / cm 3, so that the material separation occurred due to the rise of EPS beads during mixing. Normal formulation was possible without material separation. In addition, the length change rate, flow, and compressive strength were found to be improved in the concrete using the EPS coated lightweight aggregate (CEC) compared to the concrete using the EC beads. These results indicate that in the concrete using EPS beads, cement paste is not properly adhered to the surface of the EPS beads, resulting in many voids, while in the case of concrete using EPS coated lightweight aggregates, EPS coated lightweight aggregate and cement paste have excellent bonding strength. It is judged to be because fine pores did not occur.
2. 경량콘크리트 패널 제조방법2. Manufacturing method of lightweight concrete panel
앞서 살펴본 바와 같이 EPS 코팅 경량골재는 경량콘크리트용 골재로 바람직하게 이용할 수 있는데, 본 발명에서는 EPS 코팅 경량골재의 바람직한 이용례로서 경량콘크리트 패널 제조방법을 제안한다. 본 발명에 따른 경량콘크리트 패널 제조방법을 단계적으로 살펴본다.As described above, the EPS-coated lightweight aggregate can be preferably used as an aggregate for lightweight concrete, and the present invention proposes a method for manufacturing a lightweight concrete panel as a preferred use example of the EPS-coated lightweight aggregate. Look at step-by-step method for manufacturing lightweight concrete panel according to the present invention.
(1)제1단계- 골재 가공(1) First step-aggregate processing
EPS 코팅 경량골재를 제조하는 단계이다. 앞서 살펴본 바와 같이 물, 1~2mm의 바텀애쉬, 시멘트를 포함하여 조성된 코팅재로 2~15mm의 EPS비드를 코팅하여 EPS 코팅 경량골재를 제조한다. 코팅재는 물 38~45중량%, 1~2mm의 바텀애쉬 10~30중량%, 시멘트 25~52중량%를 포함하여 조성하도록 한다.EPS coating is a step of manufacturing lightweight aggregate. As described above, EPS coated lightweight aggregates are prepared by coating 2 to 15 mm of EPS beads with a coating material including water, 1 to 2 mm of bottom ash, and cement. The coating material is to include 38 to 45% by weight of water, 10 to 30% by weight of bottom ash of 1 to 2mm, 25 to 52% by weight of cement.
상기 코팅재로 2~15mm의 바텀애쉬를 코팅하여 바텀애쉬 코팅골재를 제조할 수 있는데, 바텀애쉬 코팅골재는 경량콘크리트 패널의 강도를 향상시키기 위해 사용할 수 있다. 바텀애쉬 또한 코팅재로 코팅하였기 때문에 길이변화율, 플로우, 압축강도 등에서 개선된 효과를 기대할 수 있을 것이다.The bottom ash coating aggregate can be manufactured by coating the bottom ash of 2 to 15 mm with the coating material, and the bottom ash coating aggregate can be used to improve the strength of the lightweight concrete panel. Bottom ash is also coated with a coating material, so the improved effect on the length change rate, flow, and compressive strength can be expected.
(2)제2단계- 골재 포석(2) Stage 2-Aggregate Paving Stone
패널 형틀 내부에 골재를 포석하는 단계이다. 골재는 제1단계에서 제조한 EPS 코팅 경량골재와 바텀애쉬 코팅골재를 이용하며, 패널 형틀 밖으로 튀어나오지 않을 정도로 고르게 포석한다. EPS 코팅 경량골재와 바텀애쉬 코팅골재의 사용량은 제조할 경량콘크리트 패널의 용도를 고려하여 결정하도록 한다. 가령 경량콘크리트 패널을 단순한 칸막이벽으로 사용한다면 바텀애쉬 코팅골재의 사용량을 줄이고, 구조성능이 요구되는 건물 내·외부 벽체로 사용한다면 바텀애쉬 코팅골재의 사용량을 늘린다.Paving aggregate inside the panel mold. The aggregate uses the EPS-coated lightweight aggregate and the bottom ash-coated aggregate prepared in the first step, and is evenly coated so that it does not protrude out of the panel mold. The amount of EPS coated lightweight aggregate and bottom ash coated aggregate should be determined in consideration of the use of lightweight concrete panels to be manufactured. For example, if lightweight concrete panels are used as simple partition walls, the amount of bottom ash-coated aggregates is reduced.
(3)제3단계- 시멘트페이스트 충전(3) Step 3-Fill Cement Paste
패널 형틀 내부에 시멘트페이스트를 붓는 단계이다. 시멘트페이스트는 물, 시멘트, 각종 혼화재를 사용하여 배합할 수 있으며, 적절히 유동성을 가지도록 배합하면 된다. 골재가 포석된 상태에서 시멘트페이스트를 붓기 때문에 골재 사이사이에 시멘트페이스트가 채워지면서 패널 모양으로 완성된다.The cement paste is poured into the panel mold. Cement paste can be mix | blended using water, cement, and various admixtures, and what is necessary is just to mix | blend so that it may have fluidity suitably. Since the cement paste is poured while the aggregate is paved, the cement paste is filled between the aggregates, completing the panel shape.
(4)제4,5단계- 형틀 제거 및 그라인딩(4) 4th and 5th stages-mold removal and grinding
양생한 후 패널 형틀을 제거하고 패널 표면을 그라인딩하는 단계이다. 이로써 본 발명에 따른 경량콘크리트 패널이 완성된다. 이렇게 완성된 경량콘크리트 패널은 EPS비드에 의한 경량성과 단열성이 기대되며, 바텀애쉬에 의한 경량성, 단열성, 난연성이 기대되며, 더불어 콘크리트패널 본연의 난연성이 기대된다.
After curing, the panel mold is removed and the panel surface is ground. This completes the lightweight concrete panel according to the present invention. The finished lightweight concrete panels are expected to be lightweight and insulated by EPS beads, and are expected to be lightweight, insulated and flame retardant by bottom ash.
[실시예4]경량콘크리트 패널 제조Example 4 Manufacture of Lightweight Concrete Panel
상기 [실시예3]에 따른 콘크리트 배합으로 경량콘크리트 패널을 제조하였다. 제조과정을 살펴보면 패널 형틀에 EPS비드와 EPS 코팅 경량골재를 각각 포석한 후 시멘트페이스트(시멘트+물+기포제)를 붓고 65±5℃ 온도와 70±5% 습도의 항온항습기에서 24시간 양생하였다. A lightweight concrete panel was manufactured by mixing concrete according to [Example 3]. In the manufacturing process, EPS beads and EPS-coated lightweight aggregates were laid on the panel mold, and cement paste (cement + water + foaming agent) was poured and cured in a constant temperature and humidity chamber at 65 ± 5 ° C and 70 ± 5% humidity for 24 hours.
완성된 패널은 도 3 및 도 4와 같다. 도 3에서 보는 바와 같이 EPS비드를 사용한 패널은 EPS비드가 패널 표면으로 올라와 있고, 또한 EPS비드가 고르게 분산하지 못한 채 모여 있거나 부분적으로 박리가 일어났다. 반면 EPS 코팅 경량골재를 사용한 패널은 도 4에서와 같이 EPS 코팅 경량골재가 고르게 분산되고 박리도 일어나지 않았다.
The finished panel is shown in FIGS. 3 and 4. As shown in FIG. 3, in the panel using EPS beads, EPS beads are raised to the surface of the panel, and the EPS beads are not evenly dispersed or partially peeled off. On the other hand, the panel using the EPS-coated lightweight aggregate is evenly distributed and the peeling of the EPS-coated lightweight aggregate as shown in FIG.
이상에서 본 발명은 구체적인 실시예를 참조하여 상세히 설명되었으나, 실시예는 본 발명을 예시하기 위한 것일 뿐이므로, 본 발명의 기술적 사상을 벗어나지 않는 범위 내에서 치환, 부가 및 변형된 실시 형태들 역시 아래에 첨부한 특허청구범위에 의하여 정하여지는 본 발명의 보호범위에 속한다고 할 것이다.The present invention has been described in detail above with reference to specific embodiments, but the embodiments are only for illustrating the present invention, and thus the embodiments substituted, added, and modified within the scope without departing from the spirit of the present invention are also described below. It will be said to belong to the protection scope of the present invention as defined by the claims appended hereto.
Claims (6)
상기 코팅층은 물, 1~2mm의 바텀애쉬, 시멘트를 포함하여 조성된 코팅재로 형성되는 것을 특징으로 하는 EPS 코팅 경량골재.The coating layer is formed on the surface of the EPS bead of 2 ~ 15mm,
The coating layer is water, EPS coating lightweight aggregate, characterized in that formed of a coating material comprising a 1 ~ 2mm bottom ash, cement.
상기 EPS비드는 폐EPS 자재를 파쇄한 것임을 특징으로 하는 EPS 코팅 경량골재.In claim 1,
The EPS bead is lightweight EPS coated aggregate, characterized in that the waste EPS material is crushed.
상기 코팅재는 물 38~45중량%, 1~2mm의 바텀애쉬 10~30중량%, 시멘트 25~52중량%를 포함하여 조성된 것임을 특징으로 하는 EPS 코팅 경량골재.The method of claim 1 or 2,
The coating material is an EPS coating lightweight aggregate, characterized in that the composition comprising 38 to 45% by weight of water, 10 to 30% by weight of bottom ash, 1 to 2mm, 25 to 52% by weight cement.
패널 형틀 내부에 EPS 코팅 경량골재를 포석하는 제2단계;
패널 형틀 내부에 시멘트페이스트를 붓는 제3단계;
양생한 후 패널 형틀을 제거하는 제4단계;
로 이루어지는 것을 특징으로 하는 경량콘크리트 패널의 제조방법.A first step of manufacturing EPS coated lightweight aggregate by coating 2 to 15 mm of EPS beads with a coating material including water, 1 to 2 mm of bottom ash and cement;
A second step of paving the EPS-coated lightweight aggregate in the panel mold;
Pouring cement paste into the panel mold;
A fourth step of removing the panel mold after curing;
Method for producing a lightweight concrete panel, characterized in that consisting of.
상기 제1단계는, 상기 코팅재로 2~15mm의 바텀애쉬를 코팅하여 바텀애쉬 코팅골재를 제작하는 과정을 더 포함하면서 이루어지며,
상기 제2단계는, EPS 코팅 경량골재와 함께 상기 바텀애쉬 코팅골재를 포석하면서 이루어지는 것을 특징으로 하는 경량콘크리트 패널의 제조방법.In claim 4,
The first step is made, further comprising the process of producing a bottom ash coating aggregate by coating the bottom ash of 2 ~ 15mm with the coating material,
The second step is a method of manufacturing a lightweight concrete panel, characterized in that the coating is made with the bottom ash coated aggregate with EPS coated lightweight aggregate.
상기 제4단계 후에 패널 표면을 그라인딩하는 제5단계;를 더 포함하여 이루어지는 것을 특징으로 하는 경량콘크리트 패널의 제조방법.The method of claim 4 or 5,
And a fifth step of grinding the surface of the panel after the fourth step.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101135631B1 (en) * | 2011-12-09 | 2012-04-17 | 주식회사 인트켐 | Manufacturing method of light-weight grounding plate |
| KR101135613B1 (en) * | 2011-12-09 | 2012-04-17 | 주식회사 인트켐 | Manufacturing method of light-weight grounding rod |
| KR101268439B1 (en) * | 2012-01-10 | 2013-06-04 | 이완섭 | Infilled type hybrid insulating materials and insulation wall construction method using the same |
| US10077210B2 (en) | 2015-05-12 | 2018-09-18 | Raymond C. Turpin, Jr. | Encapsulated lightweight polymer aggregates |
| WO2020149451A1 (en) * | 2019-01-18 | 2020-07-23 | 주식회사 오상엠엔이티 | Three-dimensional porous structure and fabrication method therefor |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106866063A (en) * | 2016-12-30 | 2017-06-20 | 上海墙特节能材料有限公司 | A kind of flame retardant type inorganic compounding EPS warming plates and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4982109B2 (en) | 2006-05-22 | 2012-07-25 | 株式会社インターデコム | Decorative building material coating material and decorative building material using the decorative building material coating material |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101135631B1 (en) * | 2011-12-09 | 2012-04-17 | 주식회사 인트켐 | Manufacturing method of light-weight grounding plate |
| KR101135613B1 (en) * | 2011-12-09 | 2012-04-17 | 주식회사 인트켐 | Manufacturing method of light-weight grounding rod |
| KR101268439B1 (en) * | 2012-01-10 | 2013-06-04 | 이완섭 | Infilled type hybrid insulating materials and insulation wall construction method using the same |
| US10077210B2 (en) | 2015-05-12 | 2018-09-18 | Raymond C. Turpin, Jr. | Encapsulated lightweight polymer aggregates |
| WO2020149451A1 (en) * | 2019-01-18 | 2020-07-23 | 주식회사 오상엠엔이티 | Three-dimensional porous structure and fabrication method therefor |
| KR20200089922A (en) * | 2019-01-18 | 2020-07-28 | 주식회사 오상엠엔이티 | 3d porous structure and manufacturing method of 3d porous structure |
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