KR950014708B1 - Grog products - Google Patents
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- KR950014708B1 KR950014708B1 KR1019920021915A KR920021915A KR950014708B1 KR 950014708 B1 KR950014708 B1 KR 950014708B1 KR 1019920021915 A KR1019920021915 A KR 1019920021915A KR 920021915 A KR920021915 A KR 920021915A KR 950014708 B1 KR950014708 B1 KR 950014708B1
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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
- C04B33/00—Clay-wares
- C04B33/22—Grog products
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- Road Paving Structures (AREA)
Abstract
Description
제1도는 운동장 표층재로 적합한 입자의 크기범위를 도시한 입자크기 분포곡선임.1 is a particle size distribution curve showing the size range of particles suitable as a playground surface material.
본 발명은 테니스장, 야구장, 육상경기장 등의 표층재에 관한 것으로서, 특히 인공소성토의 입자크기를 일정비율로 조절하여 배수성이 뛰어나고 우천 후 2-3시간 내에 운동할 수 있어서 기후의 영향을 받지 않는 운동장용 인공소성토 표층재에 관한 것이다.The present invention relates to a surface material such as a tennis court, baseball field, athletics field, and the like, in particular, by controlling the particle size of artificial plastic soil at a certain ratio, having excellent drainage properties and being able to exercise within 2-3 hours after rainy weather without being affected by the climate. The present invention relates to an artificial calcined soil surface material.
일반적으로 운동장의 표층재로는 폴리우레탄 수지 등으로 이루어진 인공화학제품 또는 자연에서 채취한 자연토 등이 이용되어 왔다. 그러나, 폴리우레탄 수지 등으로 이루어진 화학제품은 그 유지관리가 간단하고 용이하다는 잇점은 있으나 충격흡수가 만족스럽지 못하여 경기자가 발목, 무릎, 관절 등의 신체에 부상을 입을 위험이 있었으며, 마사토 등과 같은 자연토로 이루어진 표층재는 강우시에 그 표면조건이 크게 변하여 배수가 원활하게 이루어지지 않음으로써 비가 그친 후에도 장시간동안 사용이 어려울 뿐만 아니라 바닥면의 관리에 과다한 인력 및 비용이 든다는 문제점이 있었다.In general, as a surface material of a sports ground, artificial chemicals made of polyurethane resin or the like, or natural soil collected from nature have been used. However, the chemical product made of polyurethane resin has the advantage of simple and easy maintenance, but the shock absorption is not satisfactory, which may cause the athlete to injure the body such as ankle, knee, joint, etc. The surface material made of soil has a problem that the surface condition is greatly changed during rainfall, so that drainage is not made smoothly, and it is difficult to use for a long time even after raining, and excessive manpower and cost are required for the management of the floor surface.
따라서 운동장 표층재의 바람직한 조건으로서는, 1) 경기성을 향상시키고 유지관리의 효율성을 높이기 위하여 다져진 상태가 양호하고 입자의 균일성을 가질 것, 2)경기성과 유지관리의 효율성 향상을 위하여 구성재료가 가능한 한 단일성을 가질 것, 3) 기후조건의 변화에 의하여 표면상태의 변화가 거의 없을 것, 4) 고온하에서도 강도를 유지할 것, 5) 강우, 강설 뒤 운동장의 이용효율을 높이기 위하여 배수성이 양호할 것, 6) 여름철의 건조에 즈음하여 모래나 먼지가 일지 않고 방지효과가 있도록 보수성이 있을 것 등을 들 수 있다.Therefore, the preferred condition of the surface material of the playground is that 1) the compacted state is good and uniformity of particles is required to improve the playability and the efficiency of the maintenance, and 2) the constituent material is possible to improve the efficiency of the game and the maintenance. It should have a unity, 3) almost no change in surface condition due to changes in climatic conditions, 4) maintain strength even at high temperatures, and 5) have good drainage to improve the utilization efficiency of the playground after rainfall and snowfall. And 6) have a water-retaining property in order to prevent sand and dust from forming during summer drying and to have an effect of preventing it.
따라서 본 발명자는 종래의 운동장 표층재가 가지고 있던 문제점을 극복하고 상기의 요건을 만족시키는 운동장 표층재을 연구해 오던 결과, 천연의 황토를 600-1500℃에서 가열시킨 인공소성토를 표층재로서 이용하고 그 입자크기 분포를 조절함으로써 배수성이 뛰어나 기후변화에 영향을 받지 않는 운동장 표층재를 개발해 내었다.Therefore, the present inventors have overcome the problems of the conventional playground surface material and researched the playground surface material that satisfies the above requirements. As a result, the inventors have used artificial calcined soil heated at 600-1500 ° C. as natural surface material. By controlling the particle size distribution, we developed a playground surface material that has excellent drainage and is not affected by climate change.
먼저, 입자의 크기분포 면에서 상기의 바람직한 조건을 만족시키는 운동장용 표층재의 조성은, 실험에 의하여 첨부도면 제1도에서 예시한 입자크기 분포 곡선상의 A, B의 사이범위에 들어야 본 발명의 목적을 달성하는데 바람직하다는 것을 알게 되었다.First, the composition of the surface layer material for the playground that satisfies the above preferable conditions in terms of particle size distribution should fall within the range between A and B on the particle size distribution curve illustrated in FIG. It has been found desirable to achieve this.
예를들어, 0.05mm-5.0mm의 크기범위를 가지는 사질토를 전체 표층재의 70-80%, 0.005mm-0.05mm의 크기범위를 가지는 실토를 7-15%, 0.005mm 이하의 크기를 가지는 점토를 2-15% 범위로 하는 것이 운동장 표층재로서 적합한 배합비율이 되는 것이다.For example, sandy soils with a size range of 0.05mm-5.0mm are 70-80% of the total surface material, clays having a size range of 0.005mm-0.05mm, and clays having a size of 7-15% or less than 0.005mm. The range of 2-15% is a compounding ratio suitable as a playground surface material.
한편 입자크기 분포를 조절, 배합하여 이루어진 표층재에 대하여 배수성과 보수성을 향상시키기 위해 최근 자연토와 석회, 신더 등을 혼합시킨 혼합 표층재가 사용되기도 하였으나, 이들은 값이 비싸고 다공질이기 때문에 충격에 약하고 표면으로부터 전달되는 충격과 가압으로 인하여 세립화되고 굳어지는 경우가 많아서 결국은 배수성이 저하된다는 문제점이 있었다.On the other hand, in order to improve the drainage and water retention of the surface material formed by adjusting and mixing the particle size distribution, a mixed surface material mixed with natural soil, lime, and sinder has recently been used. However, since they are expensive and porous, they are susceptible to impact and surface. Due to the shock and pressure transmitted from the fine granules and harden often there is a problem that the drainage is eventually reduced.
또한 사문암, 감현암 등의 석분을 이용한 운동장 표층재도 사용되고는 있으나 이들은 점성과 보수성이 매우 약하며 값도 고가이어서 사용자들에게 경제적인 부담을 주었다.In addition, the surface material of sports ground using serpentine, gamyeonam, etc. is used, but they are very weak in viscosity, conservativeness, and expensive.
그리고 일부 운동장에는 마사토가 표층재로서 이용되지만, 대부분 전체적으로 불규칙적으로 배합되어 있어서 표층재 전체의 강도가 양호하지 못하고 보수성도 불량하다는 문제점이 있었으며, 따라서 표층재로서 보다는 주로 기층재로 사용되어져 왔다.In addition, in some sports grounds, Masato is used as a surface material, but most of them are irregularly mixed, so that the strength of the entire surface material is not good and the water retention is poor. Therefore, it is used mainly as a base material rather than as a surface material.
따라서 본 발명자는 표층재의 재료로서 우리나라에서 손쉽게 구할 수 있고 값이 저렴한 황토, 좀더 구체적으로는 철분이 소량 함유된 황토를 가열로에서 600-1500℃ 정도에서 가열하여 인공소성시킨 후 분쇄기에서 5mm 이하로 미분쇄한 것을 이용하였다. 그리고 그 입자크기의 분포는 제1도의 분포곡선내에 유지되도록 하였다.Therefore, the present inventors can easily obtain low cost loess in Korea as a material of surface material, and more specifically, loess containing small amount of iron is heated at about 600-1500 ℃ in a heating furnace and artificially fired to 5 mm or less in a grinder. Fine grinding was used. The particle size distribution was maintained within the distribution curve of FIG.
상기에서 본 발명은 철분이 소량 함유된 황토를 소성시켜 이용하는데 그 이유는, 소성토가 다공질로서 분쇄후 입자내에 많은 공극을 갖게 되어 보수성을 향상시키고, 또한 소성되는 동안 물성이 변하여 함수율이 높아도 강도가 크게 변하지 않기 때문이다. 또한 황토에 포함된 철분은 소성에 의하여 산화되어 산화 제2철(Fe2O3)이 되어, 표층재가 적갈색을 띠도록 함으로써 경기자가 경기도중 눈의 피로를 덜 수 있도록 한다.In the present invention, the present invention uses calcined loess containing a small amount of iron because the calcined soil is porous and has many voids in the particles after grinding, thereby improving water-retaining properties, and also changing the physical properties during firing to increase the water content. Because does not change significantly. In addition, iron contained in ocher is oxidized by firing to become ferric oxide (Fe 2 O 3 ), so that the surface material has a reddish brown color so that the player can reduce eye fatigue during the race.
상기에서 소성온도가 1500℃ 이상이 되면 분쇄후에 소성토의 경도가 너무 높아서 모래입자처럼 다져지지 않으며, 600℃ 이하가 되면 소성토 고유의 성질을 오래 보유하지 못하게 된다.When the firing temperature is above 1500 ° C, the hardness of the calcined soil after grinding is not so high that it does not become compact like sand particles.
본 발명에서 인공소성토의 입자크기 분포는 크게 0.005mm-5.0mm 범위, 0.005mm 이하 범위로 나누어질 수 있는데, 0.005mm 이하의 미립자는 물을 함유한 상태에서 점토상을 띠어 가소성, 즉 흙입자 사이에서 입자들을 체결시켜 다짐이 잘 되게 하는 성질을 나타내며, 0.005mm 이상의 범위내에서 0.05mm 이하의 입자는 0.05mm 이상의 입자들간의 결합제 역할을 하여 강한 표층을 형성하도록 하고, 1-5mm 범위의 입자는 배수성을 양호하게 하는 역할을 한다. 따라서 0.005mm 이상의 입자는 90-98%, 0.005mm 이하의 입자는 2-10% 이내의 범위인 것이 본 발명의 목적을 달성하기에 적합하다.In the present invention, the particle size distribution of artificial calcined soil can be largely divided into a range of 0.005mm-5.0mm, and 0.005mm or less. Particles of 0.005mm or less have a clay form in the state of containing water, that is, plasticity, that is, between soil particles. In the range of 0.005mm or more, particles below 0.05mm act as a binder between particles of 0.05mm or more to form a strong surface layer, and particles in the range of 1-5mm It serves to improve drainage. Therefore, it is suitable for achieving the object of the present invention that the particle size of 0.005 mm or more is in the range of 90-98%, and the particle size of 0.005 mm or less is within 2-10%.
본 발명의 실시예를 표로 나타내면 다음과 같다.The embodiment of the present invention is shown in the following table.
(직경 2mm 이하로 분쇄시킬 경우의 입자크기 분포)(Particle size distribution when grinding down to 2mm in diameter)
이상의 실시예에 의하여 배합된 인공소성토는 비온 뒤 2-3시간이 경과되었을때 다시 운동하는데 거의 지장이 없을 정도로 배수가 되었다. 이상 살펴본 바와 같이 본 발명에 의한 인공소성토 표층재는 기후변화의 영향을 받지 않을 정도로 배수성이 뛰어나서 유지관리상의 효율성을 도모할 수 있도록 하며, 또한 자연의 황토를 소성시켜 이용함으로써 경기성을 향상시키는 동시에 경제적으로 우수한 운동장 표층재를 이용할 수 있도록 한다.Artificial calcined soil blended according to the above embodiment was drained to the extent that there is little problem in exercising again after 2-3 hours after raining. As described above, the artificial calcined soil surface material according to the present invention has excellent drainage so as not to be affected by climate change, thereby improving the maintenance efficiency, and improving the playability by firing and using natural loess. Make economic playground surface available.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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KR1019920021915A KR950014708B1 (en) | 1992-11-20 | 1992-11-20 | Grog products |
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KR1019920021915A KR950014708B1 (en) | 1992-11-20 | 1992-11-20 | Grog products |
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KR940011395A KR940011395A (en) | 1994-06-21 |
KR950014708B1 true KR950014708B1 (en) | 1995-12-13 |
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KR1019920021915A KR950014708B1 (en) | 1992-11-20 | 1992-11-20 | Grog products |
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