KR100406318B1 - Manufacture and product of High strength whangtoh Block - Google Patents
Manufacture and product of High strength whangtoh Block Download PDFInfo
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- KR100406318B1 KR100406318B1 KR10-2000-0061110A KR20000061110A KR100406318B1 KR 100406318 B1 KR100406318 B1 KR 100406318B1 KR 20000061110 A KR20000061110 A KR 20000061110A KR 100406318 B1 KR100406318 B1 KR 100406318B1
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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
- C04B14/10—Clay
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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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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C1/00—Building elements of block or other shape for the construction of parts of buildings
- E04C1/40—Building elements of block or other shape for the construction of parts of buildings built-up from parts of different materials, e.g. composed of layers of different materials or stones with filling material or with insulating inserts
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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
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
- B28B3/02—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form
- B28B3/022—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form combined with vibrating or jolting
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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
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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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- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Architecture (AREA)
- Dispersion Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Press-Shaping Or Shaping Using Conveyers (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
본 발명은 황토 87∼99.8 중량%, 시멘트 0.1∼10 중량%, 고로슬래그 0.1∼3중량%의 혼합물을 진동가압성형기로 성형하여 기건양생과 증기양생을 통하여 제조함으로써 황토블럭을 대량생산하는 고강도 황토블럭과 그 제조방법에 관한 것으로, 성형 후 1일간의 양생만으로도 90kgf/㎠ 이상의 압축강도를 보이고, 수분을 접할 경우에도 원형을 유지하는 우수한 제품 특성을 지니며, 저렴하며 신속한 생산과 재령 1일 내의 출하 가능으로 경제적, 기술적으로 우수한 효과를 얻을 수 있다.The present invention is a high-strength loess which mass-produces ocher blocks by molding the mixture of 87 to 99.9% by weight of ocher, 0.1 to 10% by weight of cement, and 0.1 to 3% by weight of blast furnace slag by vibrating press molding. It relates to a block and a method of manufacturing the same, and exhibits a compressive strength of 90 kgf / ㎠ or more even after curing for one day after molding, and has excellent product characteristics to maintain a circular shape even when contacted with moisture, and is inexpensive, rapid production and within one day of age. As it can be shipped, it is economically and technically excellent.
Description
본 발명은 고강도 황토블럭과 그 제조방법에 관한 것으로, 보다 상세하게는 황토 87∼99.8 중량%, 시멘트 0.1∼10 중량%, 고로슬래그 0.1∼3중량%의 혼합물을 진동가압성형기로 성형하여 기건양생과 증기양생을 통하여 제조함으로써 황토블럭을 대량생산하는 방법과 그 황토블럭에 관한 것이다.The present invention relates to a high-strength ocher block and a method for manufacturing the same, and more specifically, a mixture of 87 to 99.9 wt% of ocher, 0.1 to 10 wt% of cement, and 0.1 to 3 wt% of blast furnace slag is formed by vibrating pressure molding machine. The present invention relates to a method for mass-producing ocher blocks by manufacturing them through steam curing and the ocher blocks.
최근 황토가 인간에 유익하고, 환경친화적 재료라는 의식이 넓게 알려지면서 황토를 이용한 건축자재가 많이 보급되고 있다. 현재 황토를 이용하여 제조한 건축자재는 블록제품과 몰탈제품으로 분류되며, 본 발명이 대상으로 하고 있는 블록제품은 소성제품과 비소성제품으로 대별할 수 있다.Recently, as the consciousness that loess is beneficial to human beings and environmentally friendly materials is widely known, building materials using loess are widely used. Currently, building materials manufactured using loess are classified into block products and mortar products, and block products targeted by the present invention can be roughly classified into plastic products and non-plastic products.
상기 블록제품 중 비소성 제품의 경우에는 적정한 강도를 발현하기까지 건조일을 최대 30일까지 확보하여야 하는 등 제조기간이 길 뿐만 아니라 건조시 불균일한 수축에 의해 균열이 발생하고, 건조 중에 제품이 원래 성형된 형태에서 모양이 변형되지 않도록 하기 위해 몰드를 제거할 수 없는 문제점이 있었다. 그러므로 비소성품의 경우에도 이러한 문제점 때문에 제조단가가 상승하여 황토블록의 가격이 높을 뿐만 아니라, 수분을 접할 경우에는 연화되는 단점을 가지고 있다.In the case of non-plastic products among the block products, the drying period must be secured up to 30 days until the proper strength is developed, and the cracking occurs due to uneven shrinkage during drying, There was a problem in that the mold could not be removed in order to avoid deformation of the shape in the molded form. Therefore, even in the case of non-plastic products, the manufacturing cost is increased due to this problem, the price of the ocher block is not only high, but also has a disadvantage of softening when encountering moisture.
본 발명은 상기한 비소성 황토 블록 제품의 문제점들을 보완하고자 한 것이며, 황토의 함수율을 적정하게 조정하고 여기에 시멘트, 고로슬래그를 첨가하여 진동가압성형기로 성형함으로써 성형후 양생까지의 운반과정에 있어서 원래의 모형이 변하지 않도록 함으로써 현재의 비소성 황토 블록 제품의 건조 양생시 사용하는 몰드의 사용을 불필요하게 하며, 또한 양생직후 80∼120kgf/㎠ 수준의 높은 압축강도를 발현할 뿐만 아니라 일반 황토 블록의 문제점인 수분을 접할 경우의 연화되는 성질이 발생하지 않는 황토블록을 대량생산이 가능하도록 하는데 있다.The present invention is to compensate for the above problems of non-plastic ocher block products, by appropriately adjusting the moisture content of the ocher and by adding cement and blast furnace slag to the vibration pressing molding machine in the transport process until the curing after molding By keeping the original model unchanged, it eliminates the use of the mold used for the dry curing of current non-plastic ocher block products, and expresses a high compressive strength of 80 to 120 kgf / cm 2 immediately after curing, The problem is that it is possible to mass-produce ocher blocks that do not produce softening properties when contacted with moisture.
도 1은 본 발명에 의한 황토 블럭을 제조하는 방법을 나타낸 공정도.1 is a process chart showing a method for producing a loess block according to the present invention.
도 2는 본 발명에 의한 황토 블럭의 제조 방법 중 증기양생 공정을 나타내는 도면.2 is a view showing a steam curing process of the ocher block manufacturing method according to the present invention.
상기한 바와 같은 과제를 해결하기 위하여, 본 발명은 고강도 황토블럭의 제조방법에 있어서, 함수율 20∼25%인 황토를 5mm의 망크기를 갖는 체를 통과시켜 5mm 미만의 입자로 만드는 재료 선별 공정과, 함수율 20∼25%이고 5mm 미만의 입자 크기를 갖는 황토 87∼99.8 중량%에 시멘트 0.1∼10 중량%, 고로슬래그 0.1∼3중량%를 첨가시켜 2분간 믹서에서 혼합시켜 조성물질을 균일하게 혼합하는 재료 혼합 공정과 상기 혼합물을 진동가압성형기에 의해 진동 5∼10초, 가압 6∼12kgf/㎠로 진동가압성형하는 진동 가압 성형 공정과, 성형된 황토블럭을 기건 4시간으로 전치 양생하는 전치 양생 공정과, 6시간동안 온도 상승률 10℃/hr이고 80℃로 1차 증기 양생한 후, 14시간동안 온도 하강률 3℃/hr로 2차 증기 양생하는 증기 양생 공정을 특징으로 한다.또한 본 발명은 고강도 황토블럭에 있어서, 위 제조방법에 의하여 만들어진 것을 특징으로 한다.이하 도면을 참조하여 본 발명에 대하여 상세히 설명한다. 도 1은 본 발명에 의해 황토 블럭을 제조하는 공정을 나타낸 공정도이다. 도면에서 도시하고 있는 바와 같이 본 발명에 의한 황토 블럭의 제조 방법은 아래와 같은 단계를 거쳐 완성된다.In order to solve the above problems, the present invention provides a method for producing a high-strength ocher block, the material selection process for making the yellow soil having a water content of 20 to 25% through a sieve having a mesh size of 5mm to make particles of less than 5mm and , 87 to 99.9% by weight of yellow soil having a water content of 20 to 25% and a particle size of less than 5 mm, 0.1 to 10% by weight of cement and 0.1 to 3% by weight of blast furnace slag were added and mixed in a mixer for 2 minutes to uniformly mix the composition. Vibration press molding process to vibrate press molding the material mixture process to vibration 5 ~ 10 seconds, pressurization 6 ~ 12kgf / ㎠ by vibrating pressure molding machine, and pretreatment curing pre-cured molded ocher block for 4 hours Process and a steam curing process for curing the steam at a rate of 10 ° C./hr at 80 ° C. for 6 hours and then curing the secondary steam at a temperature drop rate of 3 ° C./hr for 14 hours. Silver high strength sulfur The top block is made by the above manufacturing method. Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. 1 is a process chart showing a process for producing an ocher block according to the present invention. As shown in the figure, the method for manufacturing the ocher block according to the present invention is completed through the following steps.
(1) 재료 선별 공정(1) material selection process
함수율 20∼25%인 황토를 5mm의 망크기를 갖는 체를 통과시켜 이하의 5mm 미만의 입자로 만든다. 여기에서 함수율 20∼25%로 하는 이유는, 20% 미만의 함수율에서는 수분 함량이 적어 시멘트계 재료와의 수화반응이 활성화되지 못하여 강도의 발현이 낮고, 25%를 초과하는 함수율에서는 진동가압성형과정에서 제조시 효율을 저하시키기 때문이다. 여기에서 함수율 조절을 위하여 재료에 수분을 첨가시킬 수 있다.A yellow soil having a water content of 20 to 25% is passed through a sieve having a manganese of 5 mm to form particles of less than 5 mm. The water content of 20 to 25% is because the water content is less than 20%, so the hydration reaction with the cement-based material is not activated and the strength is low. This is because the efficiency is lowered at the time of manufacture. Here, moisture can be added to the material to control the moisture content.
또한 황토를 미리 체를 이용하여 5mm미만 입자로 선별하는 것은 시멘트 및 고로슬래그와의 혼합을 용이하게 하고 성형시 몰드에 투입되는 것을 원활하게 하기 위함이다.In addition, the ocher is previously screened into particles smaller than 5 mm by using a sieve to facilitate mixing with cement and blast furnace slag and to smoothly enter the mold during molding.
(2) 재료 혼합 공정(2) material mixing process
함수율 20∼25%이고 5mm 미만의 입자 크기를 갖는 황토 87∼99.8 중량%에 시멘트 0.1∼10 중량%, 고로슬래그 0.1∼3중량%를 첨가시켜 2분간 믹서에서 혼합시켜 조성물질이 균일하게 혼합된 혼합물로 제조한다.0.1 to 10% by weight of cement and 0.1 to 3% by weight of blast furnace slag were added to 87 to 99.9% by weight of loess having a water content of 20 to 25% and a particle size of less than 5 mm, and mixed in a mixer for 2 minutes to uniformly mix the composition. Prepared as a mixture.
(3) 진동 가압 성형 공정(3) vibration pressure molding process
상기 재료 혼합 공정을 거친 혼합물을 진동가압성형기에 의해 진동 5∼10초, 가압 6∼12kgf/㎠로 진동가압성형한다. 여기에서 진동 가압 성형이라 함은 일정한 형상을 갖는 성형틀 내에 재료를 장입한 후, 진동과 동시에 가압함으로써 진동과정에서 오는 재료 내부의 밀착성 강화와 가압 과정에 따른 재료 내외부의 밀착과 성형을 얻는 성형법으로서, 가압 만에 의한 성형에서 오는 불완전한 압착과 성형을 보다 완전하게 시행하는 것이다.The mixture passed through the material mixing process is vibratory pressure-molded at a vibration pressure molding machine at a vibration of 5 to 10 seconds and a pressure of 6 to 12 kgf / cm 2. Here, vibration press molding refers to a molding method in which a material is loaded into a mold having a certain shape, and then pressurized at the same time as vibration to enhance adhesion inside the material resulting from the vibration process and to obtain adhesion and molding inside and outside the material according to the pressing process. Incomplete crimping and molding resulting from molding by only pressurization is performed more completely.
(4) 전치 양생 공정(4) pretreatment curing process
위와 같이 성형된 황토블럭을 기건 4시간으로 전치 양생한다.(5) 증기 양생 공정전치 양생을 거친 제품을 최고온도 80℃의 증기양생기에서 증기 양생한다. 도 2는 본 발명에 의한 황토 블럭의 제조 방법 중 증기양생 공정을 나타내는 도면으로서, 도면에서 도시하고 있는 바와 같이, 실온(약 20℃)로부터 시작하여 약 6시간동안 시간당 10℃의 온도 상승률(상승 10℃/hr)에 의해 1차 증기 양생(최고온도 약 80℃)한 후, 약 14시간동안 시간당 3℃의 온도 하강률(하강 3℃/hr)에 의해 2차 증기 양생한다.The above-mentioned ocher block is pre-cured for 4 hours before drying. (5) Steam Curing Process The cured product is steam-cured in steam curing machine with the maximum temperature of 80 ℃. 2 is a view showing a steam curing process of the ocher block manufacturing method according to the present invention, as shown in the figure, starting at room temperature (about 20 ℃) temperature rise rate of 10 ℃ per hour for about 6 hours (rise) After the primary steam curing (10 ° C./hr) (maximum temperature about 80 ° C.), the secondary steam is cured by a temperature drop rate of 3 ° C. per hour (fall 3 ° C./hr) for about 14 hours.
이하, 본 발명의 실시예와 비교예의 시험 결과를 통하여 본 발명의 효과에 대하여 설명한다.Hereinafter, the effect of the present invention through the test results of the Examples and Comparative Examples of the present invention will be described.
실시예 1Example 1
함수율 20∼25%인 황토를 5mm체에 통과시킨 뒤 믹서를 이용하여 황토(90%)와 시멘트(10%) 각각 혼합한 후(본 실험예에서는 고로슬래그를 혼합하지 않았으나, 극히 미소한 양의 고로슬래그가 혼합된 경우에 실험치는 동일하다), 진동가압성형 방식으로 진동 5초, 가압력 6∼12kgf/㎠로 황토블럭을 제조하여 전치양생 4시간후 80℃의 증기양생기에서 양생한 다음 재령 1일의 압축강도를 측정하고, 48시간 동안 침수시킨후 비교예와 함께 형상의 변화를 관찰하였다.After passing through the 5mm sieve of yellow soil having a water content of 20 to 25%, the mixture was mixed with yellow soil (90%) and cement (10%) by using a mixer (in this experiment, blast furnace slag was not mixed, but a very small amount of The experimental value is the same when the blast furnace slag is mixed), the ocher block is made by vibration pressing molding method for 5 seconds, pressing force 6-12kgf / ㎠, and cured in steam curing machine at 80 ℃ after 4 hours of pretreatment. The compressive strength of 1 day was measured, and the shape change was observed with the comparative example after immersion for 48 hours.
실시예 2Example 2
함수율 20∼25%인 황토를 5mm체에 통과시킨 뒤 믹서를 이용하여 황토(87%)와 시멘트(10%), 고로슬래그(3%)를 각각 혼합한 후 진동가압성형방식으로 진동 5초, 가압력 6∼12kgf/㎠로 황토블럭을 제조하여 4시간 동안 전치양생한 후 80℃의 증기양생기에서 20시간 동안 양생한 다음 재령 1일의 압축강도를 측정하고, 48시간 동안 침수시킨 후 비교예와 함께 형상의 변화를 관찰하였다.After passing the yellow soil with water content of 20-25% through a 5mm sieve, using a mixer, the yellow soil (87%), cement (10%), and blast furnace slag (3%) were mixed, respectively. After making the ocher block with a pressing force of 6-12kgf / ㎠ and pretreatment for 4 hours and curing for 20 hours in a steam curing machine at 80 ℃, then measured the compressive strength of the age of 1, and submerged for 48 hours, Comparative Example The change of shape was observed with.
표 1. 실시예 1 및 2의 재령 1일 압축강도 및 48시간 침수 시험결과Table 1. Age 1 compressive strength and 48 hours immersion test results of Examples 1 and 2
각각 혼합한 후 진동가압성형 방식으로 진동 5초, 가압력 6∼12kgf/㎠로 황토블럭을 제조하여 전치양생 4시간후 80℃의 증기양생기에서 20시간 동안 양생한 다음 재령 1일의 압축강도를 측정하고, 48시간 동안 침수시킨후 비교예와 함께 형상의 변화를 관찰하였다.표 1에서 나타나는 바와 같이, 비교예가 1일 압축강도의 평균이 33kgf/㎠로 극히 불량한 압축강도를 나타내며, 48시간 침수 후 성형상태가 완전 해체되어 반죽 상태로 되는 반면, 실시예 1, 2는 1일 압축강도의 평균이 97~98kgf/㎠로서 극히 우수한 압축강도을 나타내며, 48시간 침수 후에도 원래의 성형상태가 계속하여 유지하는 성형강도를 갖고 있음을 알 수 있다.After each mixing, the ocher blocks were manufactured by vibrating pressure molding method with vibration of 5 seconds and pressing force of 6-12 kgf / cm2. After 4 hours of pretreatment, curing was carried out for 20 hours in a steam curing machine at 80 ° C. After immersion for 48 hours, the change of shape was observed with the comparative example. As shown in Table 1, the comparative example showed extremely poor compressive strength with an average daily compressive strength of 33 kgf / cm 2 and immersion for 48 hours. While the molded state is completely dismantled and then kneaded, Examples 1 and 2 exhibit extremely high compressive strengths with an average daily compressive strength of 97 to 98 kgf / cm 2, and maintain the original molded state even after immersion for 48 hours. It can be seen that it has a forming strength to.
상기한 바와 같은 구성을 갖는 본 발명은 진동가압성형방식과 증기양생방법에 의해 제조함으로써 성형 후 1일간의 양생만으로도 90kgf/㎠ 이상의 압축강도를 보이고, 수분을 접할 경우에도 원형을 유지하는 우수한 제품 특성을 지닌다.또한 본 발명에 의한 고강도 황토블럭의 제조방법은 성형과 출하의 기간을 대폭적으로 절감함으로써 황토블록의 대량 생산과 이를 통한 저렴한 황토블럭의 공급이 가능하므로 건축자재 제조산업상 매우 유용한 발명인 것이다.본 발명에 의한 황토블럭은 재령 1일 이내에서 출하가 가능하기 때문에 건조시 필요한 넓은 야적장과 몰드가 불필요하기 때문에 좁은 장소에서도 경제적으로 대량 생산할 수 있는 효과가 있다.The present invention having the configuration as described above shows the compressive strength of 90kgf / ㎠ or more only by curing for one day after molding by vibrating pressure molding method and steam curing method, excellent product properties to maintain the circular shape even when contacted with moisture In addition, the manufacturing method of the high-strength ocher block according to the present invention is a very useful invention in the construction materials manufacturing industry because it is possible to mass-produce the ocher block and supply the low-priced ocher block by greatly reducing the period of molding and shipping. . The ocher block according to the present invention can be shipped within one day of age, so that a large yard and mold required for drying are unnecessary, so that it can be economically mass-produced even in a narrow place.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR100645083B1 (en) * | 2005-12-15 | 2006-11-10 | 동산콘크리트산업(주) | A manufacture method of loess vegetation block |
| KR100703054B1 (en) * | 2005-06-03 | 2007-04-06 | 주식회사 라스아이티에스 | loess-block and manufacturing method thereof |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010069308A (en) * | 2001-03-06 | 2001-07-25 | 김성근 | the method of manufactureing ocher-block and thereof |
| KR100822908B1 (en) * | 2007-05-07 | 2008-04-16 | 제이비아이 주식회사 | Yellow earth block with tile and manufacture method thereof |
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| JPH04321548A (en) * | 1991-04-22 | 1992-11-11 | Chiyoda Corp | Inorganic block having excellent cutting and engraving workability, composition for its production and method for producing the same |
| KR19990051961A (en) * | 1997-12-20 | 1999-07-05 | 이구택 | Clay brick manufacturing method |
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| KR20000015736A (en) * | 1998-08-31 | 2000-03-15 | 강영만 | Preparation method of boundary blocks by using waste concrete |
| KR100328610B1 (en) * | 1999-07-03 | 2002-03-14 | 박영호 | Method for Product for block |
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| JPH02233539A (en) * | 1989-03-06 | 1990-09-17 | Kobe Steel Ltd | Slag block |
| JPH04321548A (en) * | 1991-04-22 | 1992-11-11 | Chiyoda Corp | Inorganic block having excellent cutting and engraving workability, composition for its production and method for producing the same |
| KR19990051961A (en) * | 1997-12-20 | 1999-07-05 | 이구택 | Clay brick manufacturing method |
| KR20000015736A (en) * | 1998-08-31 | 2000-03-15 | 강영만 | Preparation method of boundary blocks by using waste concrete |
| KR19990073091A (en) * | 1999-04-30 | 1999-10-05 | 이상헌 | Soil block and manufacturing method thereof |
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| KR100703054B1 (en) * | 2005-06-03 | 2007-04-06 | 주식회사 라스아이티에스 | loess-block and manufacturing method thereof |
| KR100645083B1 (en) * | 2005-12-15 | 2006-11-10 | 동산콘크리트산업(주) | A manufacture method of loess vegetation block |
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