KR20020080771A - Manufacturing method of radiation shielding block - Google Patents
Manufacturing method of radiation shielding block Download PDFInfo
- Publication number
- KR20020080771A KR20020080771A KR1020010020530A KR20010020530A KR20020080771A KR 20020080771 A KR20020080771 A KR 20020080771A KR 1020010020530 A KR1020010020530 A KR 1020010020530A KR 20010020530 A KR20010020530 A KR 20010020530A KR 20020080771 A KR20020080771 A KR 20020080771A
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- shielding
- bricks
- cement
- mixing
- brick
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Classifications
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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
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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
- B28B1/04—Producing shaped prefabricated articles from the material by tamping or ramming
- B28B1/045—Producing shaped prefabricated articles from the material by tamping or ramming combined with vibrating or jolting
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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
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/0064—Moulds characterised by special surfaces for producing a desired surface of a moulded article, e.g. profiled or polished moulding surfaces
- B28B7/0079—Moulds characterised by special surfaces for producing a desired surface of a moulded article, e.g. profiled or polished moulding surfaces with surfaces for moulding interlocking means, e.g. grooves and ribs
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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
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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
- E04C1/24—Elements for building-up floors, ceilings, roofs, arches, or beams
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Description
본 발명은 방사선을 효과적으로 차폐시켜 작업자의 방사선 피폭을 줄이기는 한편 시공성과 공간성 확보를 용이하게 하기 위한 방사선 차폐벽돌의 제조방법에 관한 것이다.The present invention relates to a method of manufacturing a radiation shielding brick for effectively shielding the radiation to reduce the radiation exposure of the operator while ensuring ease of construction and space.
원자력은 첨단 에너지원으로 전력생산, 비 파괴시험, 질병치료, 생명공학 등의 분야에서 다양하게 사용되고 있으며, 이러한 원자력 에너지원을 잘 활용하려면 관련작업 종사자 및 주변 일반인에 대한 안전이 강조되어야 하며 이를 위해서는 방사선을 효과적으로 차폐시켜 주어야 한다.Nuclear power is an advanced energy source and is used in various fields such as electric power generation, non-destructive testing, disease treatment, and biotechnology.In order to make good use of this energy source, safety for the relevant workers and the general public must be emphasized. The radiation must be shielded effectively.
방사선 차폐물질로는 납과 같은 중금속 및 콘크리트 등이 응용 특성에 따라 가장 많이 사용되고 있으나, 차폐물질로서의 납은 차폐능력에 비하여 시설 시공성이 낮고 가격이 비싸며, 차폐물질로서의 콘크리트는 좁은 공간에서의 활용에 한계를 갖게 된다.As the shielding material, heavy metal such as lead and concrete are most used depending on the application characteristics.However, lead as a shielding material is less expensive to install and more expensive than a shielding ability, and concrete as a shielding material is used for use in a narrow space. There is a limit.
이러한 납 차폐체의 시공 곤란성과 콘크리트 차폐체의 공간활용성에 따른 문제를 해결한 것이 차폐벽돌로써, 상기 차폐벽돌은 시공의 용이함 및 공간 활용에 이점을 갖고 있으나, 현재 방사선을 효과적으로 차폐하는 차폐벽돌의 제조방법은 알려져 있지 않다.Solving the problems of the construction of the lead shield and the space utilization of the concrete shield as a shielding brick, the shielding brick has an advantage in the ease of construction and space utilization, but the current manufacturing method of the shielding brick shielding the radiation effectively Is not known.
본 발명은 시공과 공간활용이 용이하고 방사선 차폐 능력이 뛰어난 방사선 차폐벽돌을 제조하는 것으로, 차폐벽돌을 제조 하기위한 충전제로서 경제적이고 구입이 용이한 폐철(Scale)을 사용하고, 경화제로 시멘트를 사용하며, 깨끗한 물을 이용하여 배합한 후 이를 성형틀에 넣어 성형시킴으로써 이루어진다.The present invention is to manufacture a radiation shielding brick that is easy to construct and use space, and excellent radiation shielding ability, using waste iron (Scale) is economical and easy to purchase as a filler for manufacturing the shielding brick, and cement as a curing agent It is made by mixing with clean water and putting it in a mold.
도 1 은 본 발명의 차폐벽돌의 제조 공정도1 is a manufacturing process diagram of the shielding brick of the present invention
본 발명의 방사선 차폐벽돌은 차폐제인 폐철(Scale)을 사용하고, 경화제로 포틀랜드 시멘트를 사용하며, 배합수로 음용이 가능한 정도의 깨끗한 물을 사용하여 제조한다.The radiation shielding brick of the present invention is manufactured using waste iron (Scale) as a shielding agent, Portland cement as a curing agent, and using clean water to the extent that drinking water can be used as the blending water.
차폐제로 사용되는 폐철(Scale)은 제철소에서 주조 및 가공과정에 다량으로 발생하는 산업폐기물인 것으로, 본 발명은 폐철을 재활용 하므로써 경제성을 높히고 원료수급문제도 해결할 수 있다.Waste iron used as a shielding agent (Scale) is an industrial waste generated in a large amount during the casting and processing in the steel mill, the present invention can improve the economics by recycling the waste iron and can also solve the supply and demand problems.
경화제로는 국산 포틀랜드 시멘트를 사용하며, 배합수로는 맛, 냄새, 빛깔, 탁도 등이 없는 음용수로 사용할 수 있을 정도의 깨끗한 물을 사용한다.Domestic curing agent uses Portland cement, and the mixing water uses clean water that can be used as drinking water without taste, smell, color, and turbidity.
배합수에 이물질이 함유되어 있으면 응력 부식이 발생하거나 압축강도가 떨어지는 문제가 있으므로 사전에 충분한 검사를 거쳐 엄선된 물을 사용하도록 한다.If there is a foreign matter in the blended water, there is a problem of stress corrosion or compressive strength. Therefore, sufficient water should be carefully selected before use.
본 발명은 상기된 폐철, 포틀랜드 시멘트, 물을 준비하여 차폐벽돌을 제조하는 것으로 폐철 76.9wt%, 시멘트 15.5wt%, 물 7.6wt%를 사용하며, 각각의 계량 오차는 폐철 1wt%, 시멘트 0.5wt%, 물 0.5wt% 이하를 유지시키도록 한다.The present invention uses the waste iron, Portland cement, water to prepare a shielding brick by using a waste iron 76.9wt%, cement 15.5wt%, water 7.6wt%, each weighing error 1wt% waste, 0.5wt cement % And 0.5 wt% or less of water should be maintained.
상기된 폐철의 함량은 다양하게 변화시킬 수 있으나 폐철의 함량이 증가하면 차폐 능력은 향상되나 압축강도가 떨어지고, 폐철의 함량이 낮아지면 차폐능력은 떨어지나 압축강도가 향상되므로 차폐능력과 압축강도를 고려하면 폐철 76.9wt%, 시멘트 15.5wt%, 물 7.6wt%가 적당하다The content of the waste iron can be changed in various ways, but if the content of the waste iron is increased, the shielding ability is improved, but the compressive strength is lowered. If the waste iron content is lowered, the shielding ability is decreased, but the compressive strength is improved, so the shielding capacity and the compressive strength are considered. 76.9wt% of waste iron, 15.5wt% of cement, 7.6wt% of water are suitable.
본 발명에서 폐철, 시멘트, 물의 함량을 한정하였으나, 폐철의 함량은 사용 목적 및 용도에 따라 변화시킬 수 있으며 폐철의 함량이 증가하거나 감소하면 이에 비례하여 시멘트 및 물의 함량을 증가시키거나 감소시키게 된다.In the present invention, the content of waste iron, cement, water is limited, but the content of waste iron can be changed depending on the purpose and purpose of use, and the content of cement and water is increased or decreased in proportion to the increase or decrease of the content of waste iron.
이같이 준비된 원재료를 이용하여 본 발명의 차폐벽돌을 제조하는 공정을 상세히 살펴본다.Looking at the process for producing the shielding brick of the present invention using the raw materials thus prepared in detail.
(1) 1차 믹싱 과정(1) 1st mixing process
먼저 준비된 폐철과 시멘트를 상기된 함량에 맞추어 계량한후 이를 혼합기에 투입하여 5분간 골고루 혼합시킨다.First, the prepared waste iron and cement are weighed according to the above-mentioned contents, and then mixed with each other for 5 minutes by adding them to the mixer.
이때 폐철과 시멘트는 분말형태이므로 통상의 혼합기를 이용하여 골고루 혼합시키는 것이 가능하다.At this time, since the waste iron and cement is in the form of powder, it is possible to mix evenly using a conventional mixer.
(2) 2차 믹싱 과정(2) 2nd mixing process
1차 믹싱 과정에서 혼합된 원료에 준비된 물을 투입하여 5분간 혼합시킴으로써 차폐벽돌 제조를 위한 몰타르를 제조한다.Prepared mortar for preparing a shielding brick by adding the prepared water to the mixed raw material in the first mixing process and mixing for 5 minutes.
물과 원료의 혼합시 교반 날개를 혼합기에서 작동시켜 혼합이 원활히 이루어지도록 함이 혼합에 유리하다.It is advantageous for mixing to operate the stirring blades in the mixer when mixing water and raw materials so that the mixing is performed smoothly.
(3) 성형과정(3) forming process
2차 믹싱 과정을 거쳐 얻어진 몰타르를 차폐벽돌 제조용 형틀에 붇고, 바이브 레이터(Vibrator)를 이용하여 형틀에 20초 정도 진동을 가해준다.The mortar obtained through the second mixing process is placed in a mold for manufacturing a shielding brick, and a vibration is applied to the mold for about 20 seconds using a vibrator.
차폐벽돌은 통상 일반 벽돌과 같은 사각체 형상을 갖게 되나 벽돌끼리의 연결부에서 차폐능력을 향상시키기 위하여 벽돌의 좌,우측에 W형 돌기와 돌기홈을 형성시키는 한편 상,하측에도 W형 돌기와 돌기홈을 형성시킴으로써 차폐벽돌을 쌓을 때 W자형 돌기가 인접된 벽돌의 돌기홈에 끼워지게 하여 연결부에서의 차폐능력을 향상시키도록 한다.Shielding bricks usually have the same rectangular shape as regular bricks, but W-shaped protrusions and protrusion grooves are formed on the left and right sides of the brick to improve shielding ability at the connection between the bricks. When the shielding bricks are stacked, the W-shaped protrusions are inserted into the protrusion grooves of the adjacent bricks, thereby improving the shielding ability at the connecting portion.
(4) 형틀 분해 과정(4) mold disassembly process
형틀에 몰타르를 붇고 20초 정도 진동을 가한 후에는 형틀을 제거하여 차폐벽돌만 남도록 한다.After the mold is crushed with mortar for 20 seconds, the mold is removed to leave only the shielding brick.
(5) 양생과정(5) Curing process
형틀이 제거된 차폐벽돌은 양생 장소로 이동되어져 주기적으로 살수와 건조과정을 거침으로써 충분한 양생이 이루어지도록 한다.The shielded brick with the mold removed is moved to the curing site, where it is periodically sprayed and dried to ensure sufficient curing.
차폐벽돌의 양생은 일반콘크리트 양생법과 같으나 차폐벽돌에 균열이 발생하면 결함이 되므로 온도 관리에 주의해야하며 20일 이상에 걸쳐 충분한 양생이 이루어지도록 한다.Curing of the shielding brick is the same as the normal concrete curing method, but if the crack occurs in the shielding brick, it is a defect, so care must be taken in temperature management, and sufficient curing over 20 days is to be achieved.
초기에는 일광을 피하여 양생시키고, 온도상승과 저하로 균열이 예상되므로보온하여 온도 변화속도를 낮추어 균열 발생을 방지하여가며 양생시키도록 한다.In the early stage, curing is avoided by daylight, and it is expected to crack due to temperature rise and fall, so keep warm by lowering the rate of temperature change to prevent cracking.
특히 초기 3일간은 자연상태에서 건조되게 하고 그 이후에는 살수 및 건조 작업을 주기적으로 반복하여 건조시키며, 약 30일간의 양생과정을 거치도록 한다.In particular, the first three days to be dried in the natural state, after which the spraying and drying operations are repeated periodically to dry, and undergo a curing process of about 30 days.
이러한 본 발명은 혼합, 성형, 양생과정 및 원료 이송 및 제품 이송을 자동화하여 대량 생산할 수 있다.The present invention can be mass-produced by automating mixing, molding, curing and raw material transfer and product transfer.
본 발명의 차폐벽돌은 시공성과 공간활용이 용이한 이점이 있으며, 폐철의 재활용으로 산업폐기물 발생을 줄일 수 있고, 납 차폐물을 사용할 때 발생될 수 있는 중금속 오염을 방지할 수 있으며, 특히 저렴한 가격으로 공급이 가능한 이점이 있는 것이다.The shielding brick of the present invention has the advantages of easy construction and space utilization, can reduce the generation of industrial waste by recycling of waste iron, can prevent heavy metal contamination that can occur when using lead shielding, especially at a low price There is an advantage to supply.
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| Application Number | Priority Date | Filing Date | Title |
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| KR1020010020530A KR20020080771A (en) | 2001-04-17 | 2001-04-17 | Manufacturing method of radiation shielding block |
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| KR1020010020530A KR20020080771A (en) | 2001-04-17 | 2001-04-17 | Manufacturing method of radiation shielding block |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05319880A (en) * | 1992-05-20 | 1993-12-03 | Nippon Steel Corp | Heavy concrete |
| JPH06249998A (en) * | 1993-02-25 | 1994-09-09 | Mitsubishi Materials Corp | Radiation shielding member |
| JPH10300880A (en) * | 1997-04-23 | 1998-11-13 | Tadao Sakurai | Nuclear power station and radioactive waste treatment facility with radiation shielding outer periphery wall |
-
2001
- 2001-04-17 KR KR1020010020530A patent/KR20020080771A/en not_active Application Discontinuation
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05319880A (en) * | 1992-05-20 | 1993-12-03 | Nippon Steel Corp | Heavy concrete |
| JPH06249998A (en) * | 1993-02-25 | 1994-09-09 | Mitsubishi Materials Corp | Radiation shielding member |
| JPH10300880A (en) * | 1997-04-23 | 1998-11-13 | Tadao Sakurai | Nuclear power station and radioactive waste treatment facility with radiation shielding outer periphery wall |
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