KR100853754B1 - The refractory material of high strength for construction and the making method thereof - Google Patents
The refractory material of high strength for construction and the making method thereof Download PDFInfo
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- KR100853754B1 KR100853754B1 KR20070029049A KR20070029049A KR100853754B1 KR 100853754 B1 KR100853754 B1 KR 100853754B1 KR 20070029049 A KR20070029049 A KR 20070029049A KR 20070029049 A KR20070029049 A KR 20070029049A KR 100853754 B1 KR100853754 B1 KR 100853754B1
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/94—Protection against other undesired influences or dangers against fire
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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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- 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
- B28B1/08—Producing shaped prefabricated articles from the material by vibrating or jolting
- B28B1/087—Producing shaped prefabricated articles from the material by vibrating or jolting by means acting on the mould ; Fixation thereof to the mould
- B28B1/0873—Producing shaped prefabricated articles from the material by vibrating or jolting by means acting on the mould ; Fixation thereof to the mould the mould being placed on vibrating or jolting supports, e.g. moulding tables
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- C—CHEMISTRY; METALLURGY
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- 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
- C04B14/045—Alkali-metal containing silicates, e.g. petalite
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- 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
- C04B14/36—Inorganic materials not provided for in groups C04B14/022 and C04B14/04 - C04B14/34
- C04B14/365—Gypsum
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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
- C04B18/14—Waste materials; Refuse from metallurgical processes
- C04B18/141—Slags
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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
- C04B20/04—Heat treatment
- C04B20/06—Expanding clay, perlite, vermiculite or like 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/0068—Ingredients with a function or property not provided for elsewhere in C04B2103/00
- C04B2103/0097—Anion- and far-infrared-emitting 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00431—Refractory 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
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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
- C04B2111/52—Sound-insulating 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
- C04B2201/52—High compression strength concretes, i.e. with a compression strength higher than about 55 N/mm2, e.g. reactive powder concrete [RPC]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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Abstract
Description
본 발명은 건축물의 내외장용 보드나 벽면 패널 등으로 사용되는 건축용 내외장재로서 불연성, 단열성, 경량성, 흡음성, 접착성 등의 기능성을 지닌 고강도 내화성형체에 관한 것으로, 더욱 상세하게는 보통포틀랜드시멘트와 강도증진 및 수밀성향상제로서 고로슬래그미분말과 초기강도증진 및 탈형제로서 반수석고와 장기강도증진제로서 팽창펄라이트미분말과 조기경화촉진제로서 규산나트륨과 단위수량감소 및 내구성향상제로서 고성능AE감수제와 물을 일정비율로 고르게 혼합하여 1차 혼합물을 제조하고 상기 1차 혼합물에 가열 팽창된 질석이나 펄라이트로 이루어진 경량골재를 일정비율로 2차 혼합 교반하여 내화성형체조성물을 제조하고 성형틀에 상기 내화성형체조성물을 충진시켜 일정시간동안 진동성형한 다음 상온에서 1차 건조하고 스팀양생한 후 상온에서 2차 건조하고 탈형하여 완성되는 것을 특징으로 하는 건축용 고강도 내화성형체 및 그 제조방법에 관한 것이다. The present invention relates to a high-strength refractory molded article having functionalities such as nonflammability, heat insulation, light weight, sound absorption, adhesiveness, and the like, and more specifically, ordinary portland cement and strength. Blast furnace slag powder as an enhancer and watertightness enhancer, semi-hydrated gypsum as an initial strength enhancer and release agent, expanded pearlite fine powder as a long-term strength enhancer, sodium silicate as a premature curing accelerator, and a high quantity of AE reducing agent and water as a durability enhancer The mixture is evenly prepared to prepare a primary mixture, and the mixture is stirred and mixed at a predetermined ratio with a lightweight aggregate made of vermiculite or pearlite, which is heat-expanded in the primary mixture, to prepare a refractory molded body composition and to fill a mold with the refractory molded body composition. After vibrating for an hour, first drying at room temperature and steam After curing and secondary drying at room temperature and demolded to a high-strength refractory molded article for construction and its manufacturing method.
지금까지 건축용 패널은 대다수가 화학 재료로 제조되어 왔으며, 특히 스트로폴이나 우레탄 소재의 샌드위치패널의 경우 비교적 가격이 저렴하고 가벼우며 강도가 높고 단열성이 좋아 일반적인 산업건축물의 조립식 건축자재로 많이 사용되고 있으나, 시공시 먼지나 분진을 발생시켜 인체에 해로운 영향을 미치고 인화성이 강해 발화하는 순간 걷잡을 수 없이 빠른 속도로 화재가 전파되어 순식간에 인접한 건물까지 피해를 끼치며, 더욱이 유독가스를 배출시켜 짧은 시간에 인체에 치명적인 악영향을 미치는 문제점이 있었다. Until now, most building panels have been manufactured with chemical materials. In particular, sandwich panels made of stropol or urethane have been widely used as prefabricated building materials of general industrial buildings because they are relatively inexpensive, light weight, high strength, and good thermal insulation. During construction, it generates dust or dust, which has a detrimental effect on the human body, and because of its high flammability, the fire spreads out at an uncontrollable speed and damages the building immediately adjacent to it.In addition, it emits toxic gas to the human body in a short time. There was a fatal adverse effect.
이러한 문제점을 개선하기 위한 대체 재료로서 질석이나 펄라이트를 주재(主材)로 한 건축용 패널이 사용되고 있는데, 상기 질석은 흑운모의 변질작용에 의해 생성되는 소재로 진주광택이 나며 산(酸)에 쉽게 분해되고 양이온 교환능력이 크며 가열 팽창된 질석은 다공질(多孔質)로 흡수능력이 좋아서 내열재료 및 방음재(防音材)로서 널리 이용되고 있으며, 또한 펄라이트는 진주암, 흑요석, 송지석 등을 고온에서 열처리하여 팽창시킨 불연성 무기질재질로 화재시 유독가스의 발생위험이 전혀 없고 무수한 공극이 형성되어 있어 가볍고 흡음성 및 단열성이 우수한 특성을 지니고 있다.As an alternative material for improving this problem, a building panel based on vermiculite or pearlite is used. The vermiculite is a material produced by the alteration of biotite and has a pearl luster and is easily decomposed into acid. It has high cation exchange capacity and heat-expanded vermiculite, which is porous and has good absorption ability.It is widely used as a heat-resistant material and a soundproofing material, and pearlite is heat-treated by pearlite, obsidian, and pinestone at high temperature. It is a non-flammable inorganic material that is expanded and there is no danger of toxic gas generation in case of fire.
종래에는 상기와 같은 특성을 지닌 펄라이트를 이용하여 본 출원인이 대한민국 특허출원번호 제 10-2003-0054548호를 통하여 '펄라이트를 이용한 다기능, 다공질 세라믹형상을 갖는 건축자재의 제조방법'을 선출원하였는데, 상기 선출원된 발명은 내열, 단열 및 흡음재로서 펄라이트 입자와 결합재인 소듐 실리코 알루미네이 트(Sodium Silico Aluminate)(Na2O·Al2O3X·SiO2)로 된 액상규산소다와 경화제와 물이 일정비율로 배합된 배합재를 교반기에서 혼합 및 반죽하고 반죽된 펄라이트에 과다하게 첨가된 배합재를 망사식 콘베이어를 이용하여 이송시켜 걸러낸 다음 일정 형상의 성형몰드에 넣되 성형물의 중앙에 부직포를 수평하게 삽입한 상태에서 프레스식 성형기로 가압 성형하고 탈형하여 일반 연속건조로에서 60 ~ 250℃로 서서히 가온하여 1 ~ 2시간 정도 양생 건조한 후 냉각시켜 건축재를 완성하도록 되어 있는 것이나, 상기 제조방법으로 제조된 세라믹 건축자재는 소듐 실리코 알루미네이트로 된 액상규산소다가 물에 용해되는 성질을 지니고 있어 물이나 습기에 의해 세라믹 건축자재의 경도 및 강도가 크게 저하되며, 프레스로 가압성형시 펄라이트 입자가 가압되면서 깨져 펄라이트 입자의 공극을 차단함으로써 흡음성이 저하되고 원래의 입자가 파괴되어 강도가 저하되며 부스러진 입자가 세라믹 건축자재의 표면에서 계속적으로 묻어나와 판넬 등의 기타 자재에 접착성이 떨어지고, 양생 및 건조가공시 고온에서 급온시켜 건조하게 되면 표면에 크렉이 발생되거나 변형되어 저온에서 부터 서서히 가온시켜 양생 건조해야 하므로 많은 시간이 소요되어 생산시간 및 생산비용이 증가하게 되는 문제점들이 있었다.In the related art, the applicant has filed a patent for a method of manufacturing a building material having a multifunctional, porous ceramic shape using pearlite through Korean Patent Application No. 10-2003-0054548 using pearlite having the above characteristics. The patented invention is a liquid silicate, sodium silicate aluminate (Na 2 O · Al 2 O 3X • SiO 2 ), a combination of pearlite particles and binders as a heat-resisting, heat-insulating and sound-absorbing material, and a fixed ratio Mix and knead the blended ingredients in a stirrer, transfer the blended ingredients added to the kneaded pearlite using a mesh conveyor, filter them out, and place them in a molding die of a predetermined shape. Press molding with a press-type molding machine in one state, demoulding, gradually warming to 60 ~ 250 ℃ in a general continuous drying furnace for about 1 to 2 hours It is intended to complete the building material by drying and cooling it, but the ceramic building material manufactured by the above manufacturing method has the property of dissolving liquid sodium silicate made of sodium silica aluminate in water. Hardness and strength are greatly reduced, and the pearlite particles are cracked as they are pressurized during press molding to block the pores of the pearlite particles, thereby reducing sound absorption and degrading the original particles, thereby reducing the strength. It is poorly adhered to other materials such as panels, and it is time consuming because curing and deforming are required on the surface when it is rapidly dried at high temperatures during curing and drying processing. Increased production time and cost There was.
본 발명은 상기와 같은 문제점들을 개선하기 위한 것으로 결합재로서 시멘트를 사용하고 고로슬래그미분말과 팽창펄라이트미분말을 일정비율로 첨가혼합하여 가열 팽창된 질석이나 펄라이트의 낮은 강도를 보완하도록 하고 규산나트륨과 반수석고를 일정비율로 첨가 혼합하여 성형틀로부터의 조기 탈형이 이루어지도록 하며 프레스 가압성형방법이 아닌 진동성형을 통한 스팀양생방법으로 내화성형체를 제조하여 가열팽창된 질석이나 펄라이트 입자가 가압되면서 깨져 압축강도 및 접착성이 저하되는 것을 방지하고 전체적으로 표면에 크렉이나 변형없이 단시간에 불연성, 단열성, 경량성, 흡음성, 접착성 등이 우수한 고강도 내화성형체를 제조할 수 있도록 하는 것에 그 목적이 있다. The present invention is to improve the problems as described above by using cement as a binder and by mixing the blast furnace slag powder and expanded pearlite fine powder at a certain ratio to compensate for the low strength of heat-expanded vermiculite or pearlite and sodium silicate and hemihydrate gypsum Is added and mixed at a predetermined ratio to achieve early demolding from the mold, and a refractory molded body is manufactured by steam curing method using vibration molding rather than press pressing molding method. It is an object of the present invention to prevent high adhesiveness from being lowered and to produce a high strength refractory molded article excellent in nonflammability, heat insulation, light weight, sound absorption, adhesion, etc. in a short time without cracking or deformation on the surface as a whole.
이러한 목적을 달성하기 위하여 보통포틀랜드시멘트 60 ~ 80중량부와 고로슬래그미분말 10 ~ 25중량부와 반수석고 5 ~ 15중량부와 팽창펄라이트미분말 4 ~ 8중량부와 규산나트륨 2 ~ 4중량부와 고성능AE감수제 1 ~ 3중량부와 물 25 ~ 45중량부를 고르게 혼합하여 1차 혼합물을 제조하고 상기 1차 혼합물 100중량부에 대하여 가열 팽창된 질석이나 펄라이트로 이루어진 경량골재 30 ~ 70중량부를 2차적으로 혼합 교반하여 내화성형체조성물을 제조하고 성형틀에 상기 내화성형체조성물을 충진시켜 일정시간동안 진동성형한 다음 상온에서 1차 건조하고 스팀양생한 후 상온에서 2차 건조하고 탈형하여 완성되는 것에 본 발명의 특징이 있다.In order to achieve this purpose, 60 to 80 parts by weight of ordinary Portland cement, 10 to 25 parts by weight of blast furnace slag powder, 5 to 15 parts by weight of half gypsum, 4 to 8 parts by weight of expanded pearlite fine powder, 2 to 4 parts by weight of sodium silicate and high performance 1 to 3 parts by weight of AE reducing agent and 25 to 45 parts by weight of water are evenly mixed to prepare a primary mixture, and 30 to 70 parts by weight of lightweight aggregate composed of vermiculite or pearlite, which is heated and expanded with respect to 100 parts by weight of the primary mixture. After mixing and stirring to prepare the fire-resistant molded composition, and filling the refractory molded body composition into a molding mold, vibration molding is carried out for a predetermined time, followed by primary drying at room temperature and steam curing, followed by secondary drying at room temperature, followed by demolding. There is a characteristic.
이하 본 발명에 따른 바람직한 구성을 상세히 설명하면 다음과 같다.Hereinafter, the preferred configuration according to the present invention in detail.
본 발명에 따른 건축용 고강도 내화성형체는 완전 불연재(不燃材)로 높은 단열성, 접착성, 경량성, 내수성이 유지되면서도 압축강도와 흡음성과 항균성 및 탈 취효과 등이 강화된 것으로 건축 내외장재 등의 다양한 용도로 사용되는 것으로서, 보통포틀랜드시멘트 60 ~ 80중량부와 강도증진 및 수밀성향상제로서 고로슬래그미분말 10 ~ 25중량부와 초기강도증진 및 탈형제로서 반수석고 5 ~ 15중량부와 장기강도증진제로서 팽창펄라이트미분말 4 ~ 8중량부와 조기경화촉진제로서 규산나트륨 2 ~ 4중량부와 단위수량감소 및 내구성증진제로서 고성능AE감수제 1 ~ 3중량부와 물 25 ~ 45중량부를 고르게 혼합하여 1차 혼합물을 제조하고 상기 1차 혼합물 100중량부에 대하여 가열 팽창된 질석이나 펄라이트로 이루어진 경량골재 30 ~ 70중량부를 2차 혼합 교반하여 내화성형체조성물을 제조하고 성형틀에 상기 내화성형체조성물을 충진시켜 일정시간동안 진동성형한 다음 상온에서 1차 건조하고 스팀양생한 후 상온에서 2차 건조하고 탈형하여 완성된다.The high strength fire resistant molded article for building according to the present invention is a completely nonflammable material, and has high thermal insulation, adhesiveness, light weight, and water resistance, but has enhanced compressive strength, sound absorption, antibacterial effect, and deodorizing effect. 60 ~ 80 parts by weight of ordinary Portland cement, 10 ~ 25 parts by weight of blast furnace slag powder as strength enhancer and watertightness enhancer, and 5 ~ 15 parts by weight of gypsum as initial strength increase and release agent and expanded pearlite as long term strength enhancer. 4 to 8 parts by weight of fine powder, 2 to 4 parts by weight of sodium silicate as an early curing accelerator, and 1 to 3 parts by weight of a high performance AE water reducing agent and 25 to 45 parts by weight of water as a durability enhancer to prepare a primary mixture Refractory by mixing 30 ~ 70 parts by weight of the secondary aggregate light weight aggregate made of vermiculite or pearlite expanded by heat with respect to 100 parts by weight of the primary mixture Producing a molded composition, and by filling the fire-resistant molded composition in the mold for molding a vibration molding for a predetermined time and then dried first at room temperature and is completed by a secondary drying at room temperature and then steam curing and demolding.
먼저, 본 발명에 따른 일실시예의 내화성형체조성물에 사용되는 각 첨가물을 구체적으로 살펴보면 다음과 같다. First, look at each of the additives used in the refractory molding composition of one embodiment according to the present invention in detail.
상기 고로슬래그미분말은 강도증진 및 수밀성향상을 위해 첨가되는 것으로, 이산화규소(SiO2), 산화알루미늄(Al2O3), 산화칼슘(CaO) 등이 전체 구성성분 중 94 ~ 97%를 차지하고 있어 그 자체는 경화하는 성질이 약하지만 시멘트와 혼합된 경우 시멘트의 수화반응시 생성되는 강알칼리성인 수산화칼슘(Ca(OH)2)과 반응하여 경화가 촉진되면서 칼슘실리케이트수화물(Calcium silicate hydroxide gel, CSH(CaO-SiO2-H2O)gel)을 형성하여 전체 내화성형체조성물의 결합력을 향상시키고 이와 함께 상기 반수석고가 첨가되는 조건에서 에트링자이트(Ettringite, 3CaO·Al2O3·3CaSO4·32H2O)를 다량 형성하여 상기 다량의 에트링자이트가 시멘트와 경량골재사이의 공극에 충진되어 내화성형체조성물의 강도증진 및 수밀성향상, 수화열감소 등에 기여하게 된다. The blast furnace slag powder is added to improve strength and watertightness, and silicon dioxide (SiO 2 ), aluminum oxide (Al 2 O 3 ), calcium oxide (CaO), etc., account for 94 to 97% of the total components. In itself, the curing property is weak, but when mixed with cement, it reacts with calcium (Ca (OH) 2 ), which is a strong alkali produced during the hydration of cement, to promote hardening. -SiO 2 -H 2 O) gel) improves overall bonding strength of the refractory composition and molded at the same time eth- conditions in which the addition of plaster half ring ZUID (Ettringite, 3CaO · Al 2 O to form a 3 · 3CaSO 4 · 32H By forming a large amount of 2 O), the large amount of ettringite is filled in the voids between the cement and the lightweight aggregate, thereby contributing to the increase in strength, watertightness, and heat of hydration of the refractory molded body composition.
본 발명에서 사용되는 고로슬래그미분말은 밀도 2.8 ~ 2.95kg/㎥, 비표면적 3,000 ~ 8,000 ㎠/g인 것을 상기 1차 혼합물에 10 ~ 25중량부 첨가하는 것이 바람직하며, 상기 고로슬래그미분말을 10중량부 미만으로 첨가하는 경우에는 강도증진 등의 효과가 거의 나타나지 않게 되며, 반대로 25중량부를 초과하여 첨가하는 경우에는 더이상의 강도증진효과는 없고 내화성형체조성물의 경량성이 감소되는 문제점이 발생하게 된다.The blast furnace slag powder used in the present invention preferably has a density of 2.8 to 2.95 kg / m 3 and a specific surface area of 3,000 to 8,000 cm 2 / g, and adds 10 to 25 parts by weight to the primary mixture, and 10 weight of the blast furnace slag powder. If the amount is added in less than the effect of increasing the strength almost does not appear, on the contrary, when added in excess of 25 parts by weight there is no further increase in strength effect and the problem that the light weight of the refractory molded body composition is reduced.
상기 반수석고는 황산칼슘의 반수화염(半水化鹽)(CaSO4·1/2 H2O)으로 소석고라고도 하며, 일반 석고를 120 ~ 130℃로 가열하여 생기는 분말형태로 물을 가하여 반죽하면 2분자의 결정수를 함유하는 원래의 석고(CaSO4·2H2O)가 되어 빠르게 경화(硬化)하는데, 본 발명에서는 상기와 같이 빠르게 경화하는 특성을 지닌 반수석고를 고로슬래그미분말과 함께 혼합하여 조기 경화되면서 내화성형체조성물의 초기강도를 증진시키도록 하며 이와 함께 성형틀내에서 건조 및 스팀양생되어 경화된 후 탈형되는 내화성형체조성물이 시멘트의 경화로 인해 성형틀로부터 탈형이 이루어지지 않는 것을 방지하여 용이하게 탈형되도록 한다.The hemihydrate gypsum is also referred to as calcined gypsum as a hemihydrate salt (CaSO 4 · 1/2 H 2 O) of calcium sulfate, and is kneaded by adding water in the form of powder produced by heating ordinary gypsum to 120-130 ° C. It becomes the original gypsum (CaSO 4 · 2H 2 O) containing two molecules of water of crystallization and rapidly hardens. In the present invention, the semi -hydrated gypsum having the characteristics of fast curing as described above is mixed with the blast furnace slag powder. Early curing to increase the initial strength of the refractory molding composition and at the same time it is easy to prevent the refractory molding composition that is demolded after being cured by drying and steam curing in the mold to prevent the demoulding from forming mold due to the hardening of cement To be demoulded.
본 발명에서 사용되는 반수석고는 상기 1차 혼합물에 5 ~ 15중량부 첨가하는 것이 바람직하며, 상기 반수석고를 5중량부 미만으로 첨가하는 경우에는 그 효과가 거의 나타나지 않고 15중량부를 초과하여 첨가되는 경우에는 전체 내화성형체 조성물의 강도가 크게 감소하게 된다. The hemihydrate gypsum used in the present invention is preferably added in an amount of 5 to 15 parts by weight to the primary mixture. When the hemihydrate gypsum is added in an amount less than 5 parts by weight, the effect is hardly exhibited. In this case, the strength of the entire refractory molding composition is greatly reduced.
한편, 상기 반수석고는 α형과 β형으로 분류되는데, α형은 적은 물로 큰 강도를 얻을 수 있고 β형은 많은 물을 써도 강도가 작아 본 발명에서는 α형 반수석고를 사용하는 것이 바람직하다.On the other hand, the hemihydrate gypsum is classified into α-type and β-type, and α-type can obtain great strength with little water, and β-type is small in strength even when using a lot of water, and it is preferable to use α-type hemihydrate gypsum in the present invention.
상기 팽창펄라이트미분말은 통상의 펄라이트를 가열팽창시킨 후 미분쇄한 미분말형태의 것으로, 매우 가벼우면서도 입도가 매우 작은 크기로 미분화된 것이 사용되어 내화성형체조성물의 경량성이 유지되면서도 팽창펄라이트미분말이 시멘트와 경량골재 사이의 공극에 충진되어 내화성형체조성물의 장기강도를 증진시키게 된다. The expanded pearlite fine powder is in the form of fine powder which is pulverized after heating and expanding ordinary pearlite. The expanded pearlite fine powder is used in the form of fine powder which is very light and has a very small particle size. Filling the voids between the light aggregates to increase the long-term strength of the fire-resistant molded composition.
본 발명에서 사용되는 팽창펄라이트미분말은 입도가 300 ~ 400mesh 정도의 것이 사용되며 상기 1차 혼합물에 4 ~ 8중량부 첨가되는 것이 바람직하다.The expanded pearlite fine powder used in the present invention may be one having a particle size of about 300 to 400 mesh and added to 4 to 8 parts by weight of the primary mixture.
상기 규산나트륨은 규산소다라고도 하며 석영과 탄산나트륨의 혼합물을 대략 1,000℃ 정도로 가열 융해하여 고체화시켜 만든 분말형태의 무수물(無水物)로서, 물이 첨가된 수용액상태에서는 가수분해하여 알칼리성이 되며 진한 수용액상태를 물유리(water glass)라 하며 상기 물유리는 다른물질과 접촉되면 빠르게 경화되 면서 강한 접착력을 나타내는데, 본 발명에서는 단시간내에 내화성형체조성물이 조기 경화되도록 1차 혼합물에 2 ~ 4중량부의 규산나트륨을 첨가하며 상기 규산나트륨은 1차 혼합물에 첨가되는 물과 반응하여 물유리로 되면서 경화되어 초기강도를 증가시키게 된다.The sodium silicate, also called sodium silicate, is an anhydride in the form of a powder formed by heating and solidifying a mixture of quartz and sodium carbonate at about 1,000 ° C., which is hydrolyzed in an aqueous solution state to which water is added, and becomes alkaline and concentrated in an aqueous solution state. It is called water glass (water glass) and the water glass hardens quickly when contacted with other materials and exhibits strong adhesion. In the present invention, 2 to 4 parts by weight of sodium silicate is added to the primary mixture to prematurely cure the refractory molding composition within a short time. The sodium silicate reacts with the water added to the primary mixture to harden into water glass, thereby increasing the initial strength.
상기 규산나트륨이 4중량부를 초과하여 첨가되는 경우에는 너무 된 상태의 혼합물이 되어 1차 혼합물과 경량골재가 균일하게 혼합되지 않을 뿐 아니라 너무 빨리 조기경화되어 성형체를 형성하기 어려우며 밀도가 증가하여 경량성이 떨어지는 원인이 된다.When the sodium silicate is added in an amount exceeding 4 parts by weight, the mixture becomes too much, and the primary mixture and the light aggregate are not uniformly mixed, and it is hard to form a molded article early too early to form a compact, and the density increases. This causes falling.
상기 고성능AE감수제는 단위수량(單位水量)을 줄여 강도와 내구성을 증진시키기 위해 사용되는 화학혼화제로서 폴리카르본산계, 멜라민계, 나프탈렌계 등 다양한 제품이 시판되고 있으며, 본 발명에서는 시멘트 중량에 대하여 1 중량부 미만으로 첨가되는 경우에는 공기연행(空氣連行)효과 및 감수(減水)효과가 발휘되지 못하여 내화성형체조성물의 강도증진을 기대하기 어렵고 시멘트 중량에 대하여 3중량부를 초과하는 경우에는 공기량을 과잉으로 연행시켜 내화성형체조성물의 강도가 저하되므로 본 발명에서는 1차 혼합물에 1 ~ 3중량부의 고성능AE감수제를 첨가하여 물-시멘트비(W/C)를 낮춤으로써 강도증진과 함께 화학저항성, 동결융해저항성, 내마모성 등의 내구성을 향상시키도록 되어 있다.The high-performance AE reducing agent is a chemical admixture used to reduce the unit quantity (單位 水量) to improve strength and durability, and various products such as polycarboxylic acid, melamine, and naphthalene are commercially available. If it is added less than 1 part by weight, the air entraining effect and water-repellent effect are not exerted, so it is difficult to expect the strength of the fire-resistant molded composition to be increased. If the content is more than 3 parts by weight, the amount of air is excessive. Since the strength of the fire-resistant molded composition is lowered by adding a 1 to 3 parts by weight of a high-performance AE water reducing agent to the primary mixture, the water-cement ratio (W / C) is lowered, thereby increasing the strength and chemical resistance and freeze-thawing resistance. And durability such as wear resistance.
상기 물은 1차 혼합물에 25 ~ 45중량부가 혼합되어 물-시멘트비(W/C)가 32 ~ 75중량%가 유지되도록 하는데, 물-시멘트비가 32중량% 미만인 경우에는 유동성이 적어 가장 큰 부피를 차지하는 경량골재를 첨가시 고르게 혼합되지 못하고 진동성형시 다짐작업이 불량하여 시멘트와 경량골재의 부착율이 크게 떨어지는 문제점이 발생하게 되며, 물-시멘트의 비가 75중량%를 초과하는 경우에는 반대로 유동성이 너무 커서 진동성형시 경량골재 사이로 1차 혼합물이 흘러 내림으로써 재료가 고르게 혼합되지 못하고 1차 혼합물의 상부에 경량골재가 위치되어 상하로 층을 형성하여 분리된 상태를 나타내며 이에 따라 강도저하 등의 문제점을 발생시키게 된다. The water is mixed with 25 to 45 parts by weight of the primary mixture to maintain a water-cement ratio (W / C) of 32 to 75% by weight, when the water-cement ratio is less than 32% by weight is less fluidity is the largest volume When adding the light weight aggregate, it is not evenly mixed and the compaction work is poor when vibrating. Therefore, the adhesion rate of cement and light weight aggregate is greatly reduced. When the water-cement ratio exceeds 75% by weight, the fluidity is reversed. Too large, the primary mixture flows down between the light weight aggregates during vibration molding, so that the material is not evenly mixed, and the light aggregate is located on the upper part of the primary mixture to form a layer up and down. Will be generated.
상기 경량골재는 가벼우면서도 다공질로 불연성과 단열성 및 흡음성을 지닌 물질로, 가열 팽창된 질석 또는 펄라이트가 단독으로 사용되거나 일정비율로 혼합된 것이 사용되며, 상기 가열 팽창된 질석은 입자의 크기가 3 ~ 10mm 정도인 것을 사용하는 것이 바람직하고 상기 가열 팽창된 펄라이트는 입자의 크기가 2 ~ 8mm 정도인 것을 사용하는 것이 바람직하다. The lightweight aggregate is light and porous, non-combustible, heat-insulating and sound-absorbing material, the heat-expanded vermiculite or pearlite is used alone or mixed in a certain ratio, the heat-expanded vermiculite has a particle size of 3 ~ It is preferable to use about 10mm and the heat-expanded pearlite is preferably used having a particle size of about 2 ~ 8mm.
본 발명에서는 상기 1차 혼합물 100중량부에 대하여 경량골재 30 ~ 70중량부를 2차적으로 첨가 혼합하도록 되어 있으며, 상기 가열 팽창된 질석과 가열 팽창된 펄라이트를 서로 혼합하여 사용할 경우에는 4 ~ 8 : 2 ~ 6의 중량비로 혼합하여 사용하는 것이 바람직하다.In the present invention, 30 to 70 parts by weight of the light aggregate is added to and mixed with 100 parts by weight of the primary mixture, and the mixture of the heat-expanded vermiculite and the heat-expanded pearlite is used in a mixture of 4 to 8: 2. It is preferable to mix and use in the weight ratio of -6.
또한, 상기 경량골재에는 기능성 첨가제로서 음이온 방출을 하는 모나자이트(monazite) 분말을 경량골재의 전체중량에 대하여 5 ~ 10중량부 혼합하여 사용할 수 있으며, 상기 모나자이트 분말은 500 ~ 1000mesh로 분쇄된 미분말을 사용하는 것이 바람직하다.In addition, the light aggregate may be used by mixing 5-10 parts by weight of the monazite (monazite) powder to release the anion as a functional additive with respect to the total weight of the light weight aggregate, the monazite powder using a fine powder pulverized to 500 ~ 1000mesh It is desirable to.
한편, 본 발명에 따른 다른 실시예로서 다른 첨가물들의 양을 그대로 유지하면서 상기 1차 혼합물 중의 시멘트 첨가량을 증가시키고 반대로 경량골재의 첨가량을 감소시켜 더욱 치밀하면서도 고강도의 내화성형체를 제조할 수 있으며, 이 경우에는 상기 1차 혼합물에 시멘트 80 ~ 100중량부를 혼합하고 상기 경량골재는 1차 혼합물 100중량부에 대하여 10 ~ 30중량부만을 첨가 혼합하도록 되어 있는데, 상기 경량골재의 첨가량이 감소하기 때문에 내화성형체조성물의 전체 부피가 감소하고 이로 인해 내화성형체조성물의 유동성이 급격히 증가하므로 이를 방지하기 위하여 시멘트의 첨가량을 증가시켜 물-시멘트비를 감소(물-시멘트비가 32 ~ 75중량%에서 25 ~ 56중량%로 감소)시킴으로써 혼합하기에 적절한 유동성을 갖으면서 진동성형에 알맞는 상태의 내화성형체조성물을 제공하게 되며, 이에 따라 제조된 고강도의 내화성형체는 경량성이 감소하기는 하나 높은 강도를 갖게 되어 주로 건축용 외장재로서 사용되게 된다.On the other hand, as another embodiment according to the present invention can increase the amount of cement in the primary mixture while maintaining the amount of other additives intact and, on the contrary, to reduce the amount of light aggregate added to produce a more compact and high-strength refractory molding, In this case, 80 to 100 parts by weight of the cement is mixed with the primary mixture, and the light weight aggregate is added to mix only 10 to 30 parts by weight with respect to 100 parts by weight of the primary mixture. The total volume of the composition decreases, which in turn increases the flowability of the refractory molding composition, thereby reducing the water-cement ratio by increasing the amount of cement added (to prevent the water-cement ratio from 32 to 75% by weight to 25 to 56% by weight). Fire resistance in a state suitable for vibration molding with fluidity suitable for mixing Will provide a gymnastics hydrous product, The refractory shape of the high strength are produced according to the light weight decrease is to have one high intensity is to be used mainly as a building exterior material.
다음으로, 상기와 같이 본 발명에 따라 각 첨가물이 일정비율로 혼합되어 제조된 일실시예의 내화성형체조성물을 진동성형하여 내화성형체를 제조하는 방법은 다음과 같다.Next, the method for producing a refractory molded article by vibrating the refractory molded body composition of one embodiment prepared by mixing each additive in a predetermined ratio as described above as follows.
소정의 형상을 지닌 성형틀에 상기 내화성형체조성물을 전체적으로 가득차게 충진시키고 통상적인 진동성형기로 내화성형체조성물이 충진된 성형틀에 일정시간 동안 진동을 가하여 다공질로 되어 있는 경량골재의 공극사이에 1차 혼합물이 조금씩 충진되어 일정한 경량성을 유지하면서도 견고한 조직을 갖도록 하되, 상기 성형틀에 투입된 내화성형체조성물의 초기 부피의 약 55 ~ 65%로 될 때 까지 진동성형을 유지하게 되며, 이에 따라 제조된 내화성형체는 내부에 많은 공극이 그대로 남아 있어 경량성을 유지하면서도 흡읍성, 단열성이 우수하여 주로 건축용 내장재로서 사용되게 된다.Fill the mold with a predetermined shape as a whole to fill the refractory molding composition as a whole and by vibrating the molding mold filled with the refractory molding composition with a conventional vibration molding machine for a predetermined time between the pores of the lightweight aggregate made of porous The mixture is filled little by little to maintain a constant light weight and have a solid structure, but maintains vibration molding until the initial volume of the fire-resistant molded composition injected into the molding mold is about 55 ~ 65%, thus produced fire resistance The mold has many voids intact inside, so it is mainly used as a building interior material because it has excellent suction and insulation while maintaining light weight.
한편, 본 발명의 다른 실시예에 따라 제조된 내화성형체조성물의 경우에는 통상보다 대략 2배정도의 진동시간을 유지하여 상기 성형틀에 투입된 내화성형체조성물의 초기 부피의 약 45 ~ 55%로 될 때 까지 진동성형을 유지함으로써 더욱더 치밀하고 높은 강도를 지닌 내화성형체를 제조하게 된다.On the other hand, in the case of the refractory molded article prepared according to another embodiment of the present invention to maintain the vibration time of about 2 times than usual until it is about 45 ~ 55% of the initial volume of the refractory molded article injected into the mold Maintaining vibration molding produces a more compact and high strength refractory molded body.
상기 성형틀은 목재나 우레탄 등의 합성수지재질로 형성되어 있어 탈형시 완제품에 손상이 없이 탈형되도록 되어 있다. The mold is formed of a synthetic resin material such as wood or urethane to be demolded without damaging the finished product when demolding.
상기와 같이 진동성형되어 부피가 감소된 내화성형체조성물은 성형틀에 담겨진 상태 그대로 상온에서 2 ~ 3시간 1차 건조한 후 100 ~ 150℃의 온도로 유지되는 통상의 스팀로에서 2 ~ 4시간정도 스팀양생하고 상온에서 24 ~ 48시간 방치하여 2차 자연건조시킨 다음 탈형하여 완제품을 완성하게 된다.As described above, the fire-resistant molded composition having a reduced volume by vibrating is steamed for about 2 to 4 hours in a conventional steam furnace maintained at a temperature of 100 to 150 ° C. after primary drying for 2 to 3 hours at room temperature as it is contained in a mold. After curing, it is allowed to stand for 24 to 48 hours at room temperature, followed by secondary natural drying and demolding to complete the finished product.
한편, 본 발명에 따른 일실시예의 내화성형체조성물과 다른 실시예의 내화성형체조성물이 상하 적층된 상태로 하나의 성형체로 제조될 수도 있는데, 이 경우에는 성형틀에 먼저 다른 실시예에 따른 내화성형체조성물을 일정높이로 충진시키고 초기 부피의 65 ~ 75%정도로 될 때까지 1차 진동성형한 다음 그 상부에 다시 일실시예에 따른 내화성형체조성물을 일정높이로 충진시키고 다시 2차 진동성형하여 전체부피의 55 ~ 65%가 될 때까지 진동성형하게 되며 진동성형되어 부피가 감소된 상하 일체로 적층된 내화성형체조성물은 성형틀에 담겨진 상태 그대로 상온에서 2 ~ 3시간 1차 건조한 후 100 ~ 150℃의 온도로 유지되는 통상의 스팀로에서 2 ~ 4시간정도 스팀양생하고 상온에서 24 ~ 48시간 방치하여 2차 자연건조시킨 다음 탈형하여 완제품을 완성하게 되며, 이에 따라 경량성과 다공성을 가진 건축용 내장재로서의 내화성형체와 높은 강도를 가진 건축용 외장재로서의 내화성형체가 일체로 적층된 새로운 형태의 내화성형체가 제조된다.On the other hand, the refractory molding composition of one embodiment according to the present invention and the refractory molding composition of another embodiment may be prepared in a single molded body in a state of being stacked up and down, in this case, the fire-resistant molding composition according to another embodiment in the molding mold first After filling to a certain height and primary vibration molding until the initial volume of 65 ~ 75% of the initial volume, and then filling the refractory molding composition according to an embodiment to the upper part again to a certain height and second vibration molding to 55 of the total volume Vibration molding is achieved until ~ 65%, and the fire-resistant molding composition laminated in the upper and lower parts with reduced volume by vibrating molding is first dried at room temperature for 2 to 3 hours as it is contained in the molding mold and then heated to a temperature of 100 to 150 ° C. Steam curing for 2 to 4 hours in a normal steam furnace maintained, and left for 24 to 48 hours at room temperature, followed by secondary natural drying and demolding to complete the finished product. Accordingly, a new type of fire-resistant molded body is produced in which a fire-resistant molded body as a building interior material having light weight and porosity and a fire-resistant molded body as a building exterior material having high strength are integrally laminated.
이하 본 발명에 따른 실시예는 다음과 같다.Hereinafter, the embodiment according to the present invention is as follows.
< 실시예 1 ><Example 1>
보통포틀랜드시멘트 70중량부와 밀도가 2.9kg/㎥이고 비표면적이 6,000 ㎠/g인 고로슬래그미분말 15중량부와 α형 반수석고 10중량부와 350mesh로 미분쇄된 팽창펄라이트미분말 6중량부와 규산나트륨 3중량부와 폴리카르본산계 고성능AE감수제 2중량부와 물 35중량부를 고르게 혼합하여 1차 혼합물을 제조하고 상기 1차 혼합물 100중량부에 평균입경이 6mm인 가열 팽창된 질석으로 된 경량골재 40중량부를 2차 혼합하고 균일하게 교반하여 내화성형체조성물을 제조한 다음, 가로 230mm, 세로 150mm, 높이 50mm의 목재성형틀에 상기 내화성형체조성물을 가득 충진시키고 통상의 진동성형기로 진동성형하여 상기 목재성형틀 내부에 충진된 내화성형체조성물의 높이를 30mm로 만든 후 상온에서 2.5시간 1차 건조한 후 120℃의 온도로 유지되는 통상의 스팀로에서 3시간 정도 스팀양생하고 상온에서 36시간 방치하여 2차 자연건조시킨 다음 탈형하여 내화성형체를 완성하였다.70 parts by weight of ordinary Portland cement, 15 parts by weight of blast furnace slag powder with a density of 2.9 kg / m3 and specific surface area of 6,000 cm 2 / g, 10 parts by weight of α-type hemihydrate gypsum and 6 parts by weight of finely divided expanded pearlite powder Light weight aggregate made of heat-expanded vermiculite having an average particle diameter of 6 mm to 100 parts by weight of the first mixture to prepare a primary mixture by evenly mixing 3 parts by weight of sodium, 2 parts by weight of a polycarboxylic acid-based high performance AE reducing agent and 35 parts by weight of water. 40 parts by weight of the second mixture and uniformly stirred to prepare a fire-resistant molding composition, and then filled with the fire-resistant molding composition in a wooden molding frame of 230mm in width, 150mm in height, 50mm in height and vibration molding with a conventional vibration molding machine After making the height of the refractory molding composition filled inside the mold to 30mm, it is first dried at room temperature for 2.5 hours and then 3 hours in a normal steam furnace maintained at 120 ° C. The team was cured and allowed to stand for 36 hours at room temperature, the secondary air-dried, and then demoulded thereby completing the refractory shape.
< 실시예 2 ><Example 2>
보통포틀랜드시멘트 70중량부와 밀도가 2.9kg/㎥이고 비표면적이 6,000 ㎠/g인 고로슬래그미분말 15중량부와 α형 반수석고 10중량부와 350mesh로 미분쇄된 팽창펄라이트미분말 6중량부와 규산나트륨 3중량부와 폴리카르본산계 고성능AE감수제 2중량부와 물 35중량부를 고르게 혼합하여 1차 혼합물을 제조하고 상기 1차 혼합물 100중량부에 평균입경이 5mm인 가열 팽창된 펄라이트로 된 경량골재 40중량부를 2차 혼합하고 균일하게 교반하여 내화성형체조성물을 제조한 다음, 가로 230mm, 세로 150mm, 높이 50mm의 목재성형틀에 상기 내화성형체조성물을 가득 충진시키고 통상의 진동성형기로 진동성형하여 상기 목재성형틀 내부에 충진된 내화성형체조성물의 높이를 30mm로 만든 후 상온에서 2.5시간 1차 건조한 후 120℃의 온도로 유지되는 통상의 스팀로에서 3시간 정도 스팀양생하고 상온에서 36시간 방치하여 2차 자연건조시킨 다음 탈형하여 내화성형체를 완성하였다.70 parts by weight of ordinary Portland cement, 15 parts by weight of blast furnace slag powder with a density of 2.9 kg / m3 and specific surface area of 6,000 cm 2 / g, 10 parts by weight of α-type hemihydrate gypsum and 6 parts by weight of finely divided expanded pearlite powder Light weight aggregate made of heat-expanded pearlite having an average particle diameter of 5 mm to 100 parts by weight of sodium carbonate, 2 parts by weight of polycarboxylic acid-based high performance AE reducing agent, and 35 parts by weight of water. 40 parts by weight of the second mixture and uniformly stirred to prepare a fire-resistant molding composition, and then filled with the fire-resistant molding composition in a wooden molding frame of 230mm in width, 150mm in height, 50mm in height and vibration molding with a conventional vibration molding machine After making the height of the refractory molding composition filled inside the mold to 30mm, it is first dried at room temperature for 2.5 hours and then 3 hours in a normal steam furnace maintained at 120 ° C. Steam curing, and left at room temperature for 36 hours, the second natural drying and demolding to complete the refractory molded body.
< 실시예 3 ><Example 3>
보통포틀랜드시멘트 90중량부와 밀도가 2.9kg/㎥이고 비표면적이 6,000 ㎠/g인 고로슬래그미분말 15중량부와 α형 반수석고 10중량부와 350mesh로 미분쇄된 팽 창펄라이트미분말 6중량부와 규산나트륨 3중량부와 폴리카르본산계 고성능AE감수제 2중량부와 물 35중량부를 고르게 혼합하여 1차 혼합물을 제조하고 상기 1차 혼합물 100중량부에 평균입경이 5mm인 가열 팽창된 질석으로 된 경량골재 15중량부를 2차 혼합하고 균일하게 교반하여 내화성형체조성물을 제조한 다음, 가로 170mm, 세로 120mm, 높이 20mm의 목재성형틀에 상기 내화성형체조성물을 가득 충진시키고 통상의 진동성형기로 진동성형하여 상기 목재성형틀 내부에 충진된 내화성형체조성물의 높이를 10mm로 만든 후 상온에서 2.5시간 1차 건조한 후 120℃의 온도로 유지되는 통상의 스팀로에서 3시간 정도 스팀양생하고 상온에서 36시간 방치하여 2차 자연건조시킨 다음 탈형하여 내화성형체를 완성하였다.90 parts by weight of ordinary Portland cement, 15 parts by weight of blast furnace slag powder with a density of 2.9 kg / m3 and specific surface area of 6,000 cm 2 / g, 10 parts by weight of α-type hemihydrate gypsum, and 6 parts by weight of finely expanded pulverized fine powder 3 parts by weight of sodium silicate, 2 parts by weight of a polycarboxylic acid-based high performance AE reducing agent and 35 parts by weight of water are evenly mixed to prepare a primary mixture, and 100 parts by weight of the primary mixture is light weight of heat-expanded vermiculite having an average particle diameter of 5 mm. After mixing 15 parts by weight of aggregates and agitating uniformly to prepare a fire-resistant molded composition, the fire-molded molding composition was filled in a wooden mold having a width of 170 mm, a length of 120 mm, and a height of 20 mm, and vibrated with a conventional vibration molding machine. After making the height of the refractory molding composition filled in the wood molding frame to 10mm, it is first dried at room temperature for 2.5 hours and then 3 hours in a normal steam furnace maintained at 120 ° C. The team was cured and allowed to stand for 36 hours at room temperature, the secondary air-dried, and then demoulded thereby completing the refractory shape.
< 실시예 4 ><Example 4>
보통포틀랜드시멘트 90중량부와 밀도가 2.9kg/㎥이고 비표면적이 6,000 ㎠/g인 고로슬래그미분말 15중량부와 α형 반수석고 10중량부와 350mesh로 미분쇄된 팽창펄라이트미분말 6중량부와 규산나트륨 3중량부와 폴리카르본산계 고성능AE감수제 2중량부와 물 35중량부를 고르게 혼합하여 1차 혼합물을 제조하고 상기 1차 혼합물 100중량부에 평균입경이 6mm인 가열 팽창된 펄라이트로 된 경량골재 15중량부를 2차 혼합하고 균일하게 교반하여 내화성형체조성물을 제조한 다음, 가로 170mm, 세로 120mm, 높이 20mm의 목재성형틀에 상기 내화성형체조성물을 가득 충진시키고 통상의 진동성형기로 진동성형하여 상기 목재성형틀 내부에 충진된 내화성형체조성물의 높이를 10mm로 만든 후 상온에서 2.5시간 1차 건조한 후 120℃의 온도로 유지되 는 통상의 스팀로에서 3시간 정도 스팀양생하고 상온에서 36시간 방치하여 2차 자연건조시킨 다음 탈형하여 내화성형체를 완성하였다.90 parts by weight of ordinary Portland cement, 15 parts by weight of blast furnace slag powder with a density of 2.9 kg / m3 and specific surface area of 6,000 cm 2 / g, 10 parts by weight of α-type hemihydrate gypsum, 6 parts by weight of finely divided expanded pearlite powder, and silicate Light weight aggregate made of heat-expanded pearlite having an average particle diameter of 6 mm to 100 parts by weight of the first mixture to prepare a primary mixture by evenly mixing 3 parts by weight of sodium, 2 parts by weight of a polycarboxylic acid-based high performance AE reducing agent and 35 parts by weight of water. 15 parts by weight of the second mixture and uniformly stirred to prepare a fire-resistant molding composition, and then filled with the fire-resistant molding composition in a wooden molding frame of width 170mm, length 120mm, height 20mm and vibration molding with a conventional vibration molding machine to the wood After making the height of refractory molding composition filled inside the mold to 10mm, it is first dried at room temperature for 2.5 hours and then for 3 hours in a normal steam furnace maintained at 120 ℃. Steam curing, and left at room temperature for 36 hours, the second natural drying and demolding to complete the refractory molded body.
< 실시예 5 ><Example 5>
보통포틀랜드시멘트 90중량부와 밀도가 2.9kg/㎥이고 비표면적이 6,000 ㎠/g인 고로슬래그미분말 15중량부와 α형 반수석고 10중량부와 350mesh로 미분쇄된 팽창펄라이트미분말 6중량부와 규산나트륨 3중량부와 폴리카르본산계 고성능AE감수제 2중량부와 물 35중량부를 고르게 혼합하여 1차 혼합물을 제조하고 상기 1차 혼합물 100중량부에 평균입경이 6mm인 가열 팽창된 펄라이트로 된 경량골재 15중량부를 2차 혼합하고 균일하게 교반하여 내화성형체조성물을 제조한 후 가로 230mm, 세로 150mm, 높이 50mm의 목재성형틀에 상기 내화성형체조성물을 14mm높이로 충진시키고 통상의 진동성형기로 진동성형하여 상기 목재성형틀 내부에 충진된 내화성형체조성물의 높이를 10mm로 만든 다음, 그 상부에 보통포틀랜드시멘트 70중량부와 밀도가 2.9kg/㎥이고 비표면적이 6,000 ㎠/g인 고로슬래그미분말 15중량부와 α형 반수석고 10중량부와 350mesh로 미분쇄된 팽창펄라이트미분말 6중량부와 규산나트륨 3중량부와 폴리카르본산계 고성능AE감수제 2중량부와 물 35중량부를 고르게 혼합하여 다른 1차 혼합물을 제조하고 상기 다른 1차 혼합물 100중량부에 평균입경이 6mm인 가열 팽창된 질석과 평균입경 5mm인 가열 팽창된 펄라이트를 6 : 4의 중량비로 혼합한 경량골재 40중량부를 2차 혼합하고 균일하게 교반하여 제조된 다른 내화성형체조성물을 가득 충진시킨 상태에서 다시 2차 진동성형하여 전체 높이가 30mm가 되 도록 한 다음 상온에서 2.5시간 1차 건조한 후 120℃의 온도로 유지되는 통상의 스팀로에서 3시간 정도 스팀양생하고 상온에서 36시간 방치하여 2차 자연건조시킨 다음 탈형하여 상하적층된 상태의 내화성형체를 완성하였다.90 parts by weight of ordinary Portland cement, 15 parts by weight of blast furnace slag powder with a density of 2.9 kg / m3 and specific surface area of 6,000 cm 2 / g, 10 parts by weight of α-type hemihydrate gypsum, 6 parts by weight of finely divided expanded pearlite powder, and silicate Light weight aggregate made of heat-expanded pearlite having an average particle diameter of 6 mm to 100 parts by weight of the first mixture to prepare a primary mixture by evenly mixing 3 parts by weight of sodium, 2 parts by weight of a polycarboxylic acid-based high performance AE reducing agent and 35 parts by weight of water. After mixing 15 parts by weight in a second and uniformly stirring to prepare a fire-resistant molding composition, the fire-resistant molding composition was filled to a wooden molding frame having a width of 230 mm, a length of 150 mm, and a height of 50 mm to a height of 14 mm and vibrated with a conventional vibration molding machine. The height of the fire-resistant moldings filled in the wood molding frame is 10mm, and then 70 parts by weight of ordinary Portland cement, the density is 2.9kg / ㎥, and the specific surface area is 6,000 ㎠ / 15 parts by weight of blast furnace slag fine powder, 10 parts by weight of α-type hemihydrate gypsum, 6 parts by weight of expanded pearlite fine powder finely ground into 350mesh, 3 parts by weight of sodium silicate, 2 parts by weight of polycarboxylic acid-based high performance AE reducing agent and 35 parts by weight of water 40 parts by weight of light aggregate, which was mixed evenly to prepare another primary mixture and mixed with 100 parts by weight of heat-expanded vermiculite having an average particle diameter of 6 mm and heat-expanded pearlite having an average particle diameter of 5 mm in a weight ratio of 6: 4. Secondly, the parts were mixed twice and uniformly stirred, followed by the second vibration molding in the state of full filling of the other refractory molding composition, and the total height was 30mm, followed by first drying at room temperature for 2.5 hours, and then maintaining the temperature at 120 ° C. Steam curing for about 3 hours in a conventional steam furnace, which is left for 36 hours at room temperature, followed by secondary natural drying and demolding to complete a fire-resistant molded body in a laminated state.
상기와 같이 제조된 실시예 1 내지 5의 내화성형체를 각각 동일 조건에서 밀도(경량성), 굽힘강도, 압축강도, 열전도율, 열저항, 접착성, 연소성을 측정하였으며, 그 결과는 <표 1>에 나타내었다.The refractory molded articles of Examples 1 to 5 prepared as described above were measured for density (light weight), bending strength, compressive strength, thermal conductivity, thermal resistance, adhesiveness, and burnability under the same conditions. Shown in
상기 접착성 측정은 금속제 판넬에 접착제를 1mm두께로 도포한 후 실시예 1 내지 5의 내화성형체를 각각 접착한 후 20시간 후의 접착력을 시험한 것이다.The adhesion measurement is to test the adhesive force after 20 hours after applying the adhesive to a metal panel with a thickness of 1mm, after adhering the refractory molded products of Examples 1 to 5, respectively.
< 표 1 > 실시예 1 내지 5의 측정결과Table 1 Measurement Results of Examples 1 to 5
상기 <표 1>의 측정결과와 같이 실시예 1 및 2의 내화성형체는 실시예 3 및 4의 내화성형체보다 밀도가 작고 가벼워 상대적으로 경량성을 나타내었으나 내부의 공극이 많이 포함된 상태로 유지되어 실시예 3 및 4의 내화성형체보다 굽힘강도 및 압축강도는 떨어진 상태를 나타내어 주로 건축용 내장재로 사용되는 스티로폼이나 우레탄폼 등의 대용품으로 활용가능하며, 실시예 3 및 4의 내화성형체는 밀도가 실시예 1 및 2의 내화성형체보다 커서 경량성이 떨어지나 굽힘강도 및 압축강도가 커 고강도를 나타냄으로써 주로 건축용 외장재로 활용 가능하다.As shown in the measurement results of <Table 1>, the refractory molded products of Examples 1 and 2 were relatively lighter in density and lighter than the refractory molded products of Examples 3 and 4, but remained in a state containing a lot of voids therein. The bending strength and the compressive strength are lower than those of the fire resistant molded products of Examples 3 and 4, and thus can be used as substitutes such as styrofoam or urethane foam, which are mainly used as interior materials for construction, and the fire resistant molded products of Examples 3 and 4 have high density. It is lighter than the fire resistant molded articles 1 and 2, so it is inferior in weight, but its bending strength and compressive strength are high, and thus it can be mainly used as a building exterior material.
또한, 실시예 5의 내화성형체는 건축용 내장재와 외장재가 일체로 형성된 상태의 성형체를 제공하여 건축용 내장재와 외장재를 별도의 접착제로 부착하는 공정이 생략되어 짧은 시간내에 간편한 시공이 이루어질 수 있도록 하며, 실시예 1 내지 5의 내화성형체는 모두 접착성이 양호하고 불에 타지 않는 불연성을 나타내어 화재예방에 큰 효과를 볼 수 있으며, 강도가 높으면서 열전도율이 작고 열저항이 커서 내열성 및 단열성이 우수하여 통상적인 건축용 내외장재보다 훨씬 뛰어난 성능의 건축용 내외장재를 제공하게 된다. In addition, the fire-resistant molded body of Example 5 provides a molded body in which the building interior material and the exterior material are integrally formed so that the process of attaching the building interior material and the exterior material with a separate adhesive is omitted so that a simple construction can be achieved within a short time. The fire resistant molded articles of Examples 1 to 5 all have good adhesion and are not inflammable and have a great effect on fire prevention, and have high strength, small thermal conductivity, and high heat resistance, which is excellent in heat resistance and heat insulation. It will provide interior and exterior building materials with much higher performance than interior and exterior materials.
상기와 같이 본 발명에 의하면 진동성형 및 스팀양생을 통한 제조방법에 의해 완성된 내화성형체의 표면에 크렉이나 변형없이 빠른 시간내에 완제품을 성형할 수 있으며, 건축용 내장재로 사용되는 경우 경량성을 유지하면서도 불연성을 나타내어 종래의 스티로폼이나 우레탄폼 등으로 되어 있는 건축용 내장재의 문제점을 개선할 수 있고 종래보다 높은 강도를 나타내어 안정적이면서도 내열성 및 단열성이 우수한 제품을 제공할 수 있고, 건축용 외장재로 사용되는 경우에도 고강도를 유지하면서도 불연성, 단열성, 내열성을 뛰어난 제품을 제공할 수 있게 되며, 또한 건축용 내장재와 외장재가 일체로 형성된 상태의 성형체를 제공할 수 있어 건축용 내장재와 외장재를 별도의 접착제로 부착하는 공정이 생략되어 짧은 시간내에 간편한 시공이 이루어질 수 있도록 하는 효과가 있다.As described above, according to the present invention, the finished product can be molded on the surface of the refractory molded body completed by the manufacturing method through vibration molding and steam curing without cracking or deformation, and when used as a building interior material, while maintaining lightness It exhibits non-combustibility and can improve the problems of building interior materials made of conventional styrofoam or urethane foam, and can provide products with stable and high heat resistance and heat insulation by showing higher strength than conventional ones, and high strength even when used as building exterior materials It is possible to provide a product having excellent incombustibility, heat insulation, and heat resistance while maintaining the structure, and also to provide a molded body in which the building interior materials and exterior materials are integrally formed, thus eliminating the process of attaching the building interior materials and exterior materials with a separate adhesive. Easy construction in a short time There is an effect that can be broken.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR101343803B1 (en) | 2013-03-21 | 2013-12-19 | 대우조선해양건설 주식회사 | Concrete composition using the blast-furnace slag and method for the preparation thereof |
| KR101543958B1 (en) | 2014-04-04 | 2015-08-24 | 주식회사 호만산업 | Method for manufacturing insulating material with expanded perlite |
| KR101559346B1 (en) | 2013-11-13 | 2015-10-13 | (주)포스코건설 | Fireproof coating material using slag, powder type fireproof coating material and method for using the same |
| KR101565698B1 (en) * | 2014-05-30 | 2015-11-04 | 현대건설주식회사 | Insulating Light-Weight Product Blended Ground Granulated Blast Slag and Expanded Vermiculite Aggregate and Method for Manufacturing Thereof |
| KR101574933B1 (en) | 2014-08-18 | 2015-12-14 | 조일호 | Lightweight insulation binding material and manufacturing method thereof |
| KR101986806B1 (en) * | 2018-02-05 | 2019-06-07 | 조태영 | Composition for maufacturing light-weight ceiling-board, method for manufacturing light-weight ceiling-board using the same, and light-weight ceiling-board manufactured from the same |
| JP2020183338A (en) * | 2019-05-09 | 2020-11-12 | 宇部興産株式会社 | Admixture for mortar concrete, cement composition, mortar composition and concrete composition containing the same, and method for producing mortar cured product and concrete cured product |
| KR102210044B1 (en) * | 2020-06-16 | 2021-02-01 | 이재현 | Producing method for construction interior material using bottom ash and construction interior material thereof |
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| KR20030025361A (en) * | 2001-09-20 | 2003-03-29 | 삼손퍼라이트 주식회사 | Surface modified-expanded perlite and its usage |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20030025361A (en) * | 2001-09-20 | 2003-03-29 | 삼손퍼라이트 주식회사 | Surface modified-expanded perlite and its usage |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101343803B1 (en) | 2013-03-21 | 2013-12-19 | 대우조선해양건설 주식회사 | Concrete composition using the blast-furnace slag and method for the preparation thereof |
| KR101559346B1 (en) | 2013-11-13 | 2015-10-13 | (주)포스코건설 | Fireproof coating material using slag, powder type fireproof coating material and method for using the same |
| KR101543958B1 (en) | 2014-04-04 | 2015-08-24 | 주식회사 호만산업 | Method for manufacturing insulating material with expanded perlite |
| KR101565698B1 (en) * | 2014-05-30 | 2015-11-04 | 현대건설주식회사 | Insulating Light-Weight Product Blended Ground Granulated Blast Slag and Expanded Vermiculite Aggregate and Method for Manufacturing Thereof |
| KR101574933B1 (en) | 2014-08-18 | 2015-12-14 | 조일호 | Lightweight insulation binding material and manufacturing method thereof |
| KR101986806B1 (en) * | 2018-02-05 | 2019-06-07 | 조태영 | Composition for maufacturing light-weight ceiling-board, method for manufacturing light-weight ceiling-board using the same, and light-weight ceiling-board manufactured from the same |
| JP2020183338A (en) * | 2019-05-09 | 2020-11-12 | 宇部興産株式会社 | Admixture for mortar concrete, cement composition, mortar composition and concrete composition containing the same, and method for producing mortar cured product and concrete cured product |
| KR102210044B1 (en) * | 2020-06-16 | 2021-02-01 | 이재현 | Producing method for construction interior material using bottom ash and construction interior material thereof |
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