Korean Regulation Research Articles

Occurrence of mycotoxins in swine feed from South Korea.

To update recent information on contamination levels of mycotoxins in South Korea. A total of 208 samples sourced from the feeds of swine farms were collected. The contamination levels of mycotoxins, which are aflatoxin (Afla), ochratoxin A (OTA), deoxynivalenol (DON), zearalenone (ZEN), fumonisin (FUM), and T-2 toxin, were investigated by enzyme-linked immunosorbent assays (ELISAs). The detection levels of the total samples were 78.91% for DON, 75.24% for Afla, 47.02% for ZEN, 68.31% for FUM, and 5.94% for OTA and T-2, which were not detected at all. Most of the analyzed mycotoxins showed significant high occurrences in 47.02%-78.91% of the swine feed samples. 11 of the 152 alfa-positive samples exceeded the maximum residue limit (MRL) of Afla proposed by the Korean regulation. In the analysis of mycotoxin detection levels by growth stage, ZEN was found in the nursery stage at a remarkably high concentration level (126.46 ± 63.76 ppb), exceeding the MRL of ZEN for piglets proposed by the European Commission. This mycotoxin was also found in the samples from the gestation barn (89.04 ± 46.05 ppb) and the farrowing house (105.58 ± 94.12) at a high concentration level. Afla was found in the nursery stage at a high concentration (8.00 ± 2.22 ppb), approaching the MRL (10 ppb) of Afla proposed by the Korean regulation. These results indicate that many swine farms in South Korea are still exposed to mycotoxin risk, and special attention and surveillance are necessary for these mycotoxin risks in swine farms.

Enhancing Fuel Properties of Napier Grass via Carbonization: A Comparison of Vapothermal and Hydrothermal Carbonization Treatments

Napier grass is a herbaceous biomass that can be used as biofuel; however, its high ash, potassium, sulfur and chlorine content may cause problems when combusted. Napier grass was submitted to vapothermal carbonization (VTC) and hydrothermal carbonization (HTC) processes at 190 and 220 °C to compare their ability to enhance its fuel properties. The different water distribution between phases in the two processes was verified: up to 14.5% of the water vaporized to steam in the VTC ran at 220 °C, while over 99% of the water remained in the liquid state and in contact with the solids during all HTC runs. Both processes improved the calorific value of the Napier grass (up to 20.6% for VTC220 and up to 29.8% for HTC220) due to the higher C content in the chars. Both processes reduced the sulfur content, removing up to 15.3% of it with VTC190 and 28.5% of it with HTC190 compared to that of Napier grass. In contrast, the two processes had different effects on the ash and chlorine content. While HTC removed both ash and Cl from the Napier grass, VTC concentrated it in the chars (ash: 5.6%wt. Napier grass, 3.3%wt. HTC chars, 7.1%wt. VTC; chlorine: 1.08%wt. Napier grass, 0.19%wt. HTC chars, 1.24%wt. VTC). Only the HTC process leached high percentages of Cl (up to 80%), S (up to 70%), sodium (Na, up to 80%) and potassium (K, up to 90%) into the process water. This may prevent fouling and slagging problems when burning HTC char. The biofuel qualities of the raw Napier grass, VTC, and HTC chars were evaluated using two standards: the international standard for solid biofuels, EN ISO 17225, and the Korean regulation for biomass solid recovered fuels (Bio-SRF). Napier grass and VTC chars presented problems regarding Cl content thresholds for both EN ISO 17225 and Bio-SRF. Both VTC and HTC chars along with the Napier grass fulfilled the requirements for heavy metals (Pb, Ni, Cr, and Cd) except for copper. The choice of process in practical applications will depend on the goal; HTC improves fuel quality and VTC has higher high solid, carbon and energy yields.

Optimal conditions for beef tenderization through radiofrequency heating with cold air.

High-temperature (15-37°C) aging can shorten the tenderizing time of beef; however, the use of constant temperature heating can lead to microbial spoilage. This study tested radiofrequency (RF) tenderization (RF-T) to find the appropriate conditions for the aging-like effect of beef without microbial spoilage. After subjecting beef to 22h RF-T with four different cooling temperatures (15, 5, -10, and -20°C), the proliferated aerobic bacteria on the surface showed a concentration of 6-6.2logCFU/g at -10 and -20°C, lower than 7-7.5logCFU/g at 15 and 5°C. When beef was treated with 25W/kg RF heating power for 48h RF-T, the estimated reduction rate of the sliced shear force (SSF) and the increase rate of glutamic acid based on the weight before RF-T were 22.6% and 1.51-fold, which were greater than 19.6% and 1.37-fold with 20W/kg, and 11.0% and 1.11-fold with 15W/kg. The optimal specific RF heating power was calculated as 30W/kg from the results' extrapolation. When processed for 48h under optimal conditions (30W/kg specific RF heating power, -20°C cooling air), the tenderization rate and the increased rates of free amino acids based on the weight before RF-T of beef reached over 20% and 1.5-fold with 5.22 log CFU/g aerobic bacteria, which was lesser than the Korean regulation value of 6.7logCFU/g (5×106 CFU/g). Therefore, RF-T could be proposed as a promising high-temperature tenderization method with lowered risk of microbial spoilage. PRACTICAL APPLICATION: We showed that lowering the chamber temperature during RF-T was effective in surface drying and inhibiting aerobic bacteria. RF-T for 24-48h with 30W/kg specific RF heating power had an aging-like effect given tenderization and increase in FAAs. Moreover, by providing the matching circuit and impedance during RF-T, this method could be industrially reproducible.

Korean regulation of the Shutdown Law (셧다운제), and the issue of minors using electronic games and social media

Koreańska regulacja Shutdown Law (셧다운제), a problematyka korzystania z gier elektronicznych i mediów społecznościowych przez małoletnich Dotychczas w literaturze przedmiotu, a w szczególności w naukach prawnych, brakowało badań, które w sposób szeroki objęłyby problematykę korzystania z gier elektronicznych i mediów społecznościowych przez małoletnich. W artykule postawiono tezę, że współczesne ustawodawstwa powinny wprowadzać odpowiednie mechanizmy prawne przeciwdziałające negatywnym skutkom nieprawidłowego korzystania z gier elektronicznych i mediów społecznościowych przez małoletnich. W pierwszej części artykułu zarysowany został problem badawczy, w tym negatywne skutki nieprawidłowego korzystania ze wskazanych wytworów technologii przez małoletnich, a także przytoczono obszerne dane statystyczne na ten temat. W drugiej części wskazano możliwe działania polityczne i legislacyjne oraz regulacje prawne, które zmierzają do zapewnienia odpowiedniej ochrony małoletnim w kontekście opisanych zagrożeń. Ze względu na nasilony stopień ingerencji ustawodawczej uwaga została poświęcona w znacznej mierze porządkom prawnym regionu Azji Wschodniej, a w szczególności Korei Południowej. Na ostatnią część artykułu złożyła się szczegółowa analiza koreańskiego unormowania ograniczającego dostęp do gier przez małoletnich, z wyróżnieniem regulacji Shutdown Law (셧다운제), która to funkcjonowała przez ponad 10 lat, do 2021 r. Podjęte tu rozważania umożliwiły dostrzeżenie całościowego kontekstu, wieloaspektowości omawianych zagadnień oraz analizę doświadczeń i rozwiązań prawnych wyróżniających się prawodawstw.

디지털시대의 한국 규제제도의 재설계 : 핀테크, 레그테크, 샌드박스의 동기화와 스마트 레그테크

규제는 그 역사의 산물인바, 2008년 금융위기 이후 촉발된 핀테크, 레그테크의 출현, 4차 산업혁명 관련 기술적 발달(블록체인 같은) 및 신흥 시장 개발 등은 현재의 상황을 본질적으로 시험대에 오르게 하고 있으며 영국 및 세계 각국은 새로운 규칙 및 규제에 동적으로 적응할 수 있는 규제 체제 설계 촉진의 일환으로 규제 샌드박스를 운영한다.<BR> 규제 샌드박스를 SWOT분석으로 살펴 본 결과, ‘한국형 규제 샌드박스’의 도입에는 정부 주도 샌드박스 외에 업계가 주체가 되는 산업 샌드박스 및 샌드박스 우산을 포함한 샌드박스 생태계 전체론적 시각이 필요하며 이의 성공적인 운영을 위해서는 벤처캐피탈을 포함 다양한 분야의 이해관계자들과의 협력이 전제되어야 함을 알 수 있었다.<BR> 세계가 KYC(Know Your Customer) 접근에서 KYD(Know Your Data) 패러다임으로 그 기조가 바뀜에 따라 기술의 진보가 시장 참가자와 인프라 모두를 변화시키고 있다. 한국이 특히 디지털시대에 선도해 나가기 위해서 샌드박스 생태계를 매개체로 하여 레그테크와 핀테크가 공진화하면서 동기화를 이루고 “스마트 레그테크” 시스템의 구현으로 규제당국과의 양방향 ‘실시간’ 모니터링이 가능하게 되는 규제 거버넌스를 한국의 새로운 규제 패러다임으로 제안한다. 이는 금융 분야를 넘어서 블록체인, 드론, 사물인터넷, 자율주행차 등 모든 분야의 규제 혁명에 적용될 수 있을 것이다.

On the Problems of the Korean Regulation on Gambling Games based on the Game Industry Act

On the Problems of the Korean Regulation on Gambling Games based on the Game Industry Act

The object of writing of Korean language regulation

The object of writing of Korean language regulation

Gap study on technical standards and quality assurance between ITER and Korean regulation

Currently, Korea Domestic Agency (KODA) for the International Thermonuclear Experimental Reactor (ITER) project or the ITER Korea has been conducting follow-up surveys and development researches for the core technologies of its non-procurement items. This eventually aims to secure implicit as well as explicit knowledge and expand domestic specialists for future fusion facilities including K-DEMO. As a part of the project, the comparative analysis and gap study of technical standards and Quality Assurance (QA) system between ITER and Korean nuclear facilities are being performed. The goal of this study is to present a roadmap re-systematizing current safety-related standards for the fission-based facilities into fusion-based facilities in Republic of Korea.The research is considering two different tracks. First one is to secure the state-of-the-art of the fusion technical standards continually updated. For its investigation, we organized the Korean fusion safety advisory group that consists of experts from institutes, industries, and universities. The latest information of technical standards have been gathered and updated from each area of expert in periodic manner. The information is classified into Product Breakdown Structure (PBS) including safety classification, major safety issues, analysis computer codes, etc. This task will be re-organized this year such that the technical standards for procurement as well as non-procurement items can be accumulated in systematic and sustainable manner. Second one, called “Gap Study,” is to compare the requirements for domestic nuclear facilities and the results from the first track on the basis of experts’ opinion from the national and private sectors and to recommend the approaches to overcome technical and administrative barriers. The result is, therefore, expected to contribute to K-DEMO project from the licensing and regulatory aspect.

승객 이명감 기준을 만족하는 고속철도 터널 최소 단면적에 대한 연구

Pressure change inside cabin as well as in tunnel has been calculated to assess the passenger pressure comfort of high-speed train. C-STA , a CFD program based on axi-symmetric Navier-Stokes equation and Roe's FDS has been used to simulate the pressure change in tunnel during a high-speed train passing through it. To present the relative motion between the train and the tunnel, a modified patched grid scheme based on the structured grid system has been employed. The simulation program has been validated by comparing the simulation results with field measurements. Extensive parametric study has been conducted for various train speed, tunnel cross-sectional area and tunnel length to the pressure change in cabin. KTX-Sancheon(KTX2) high-speed train has been chosen for simulation and the train speed have been varied from 200 km/h to 375 km/h. The tunnel length has been varied from 300 m to 7.5 km and tunnel area from 50 m 2 to 120 m 2 . Total 504 simulations have been conducted varying the parameters. Based on the database produced from the parametric simulations, minimum tunnel cross-sectional area has been surveyed for various train speeds based on Korean regulation on pressure change in cabin.

Legislation on Genetic Diagnosis: Comparison of South Korea and Germany: - With Focus on the Application and Communication Structure.

This article explores the questions regarding PND and PID, especially the concrete legal conditions for the justification of PND and PID. As such, the German law stipulating PND and PID in a very concrete and detailed manner is introduced and explained in comparison with the corresponding South Korean law. The South Korean Bioethics and Biosafety Act (BBA) stipulates various types of gene testing and does not demonstrate a delicate sense of each type of gene testing. In contrast to the South Korean regulation, in Germany, there exist specific regulations for genetic counseling. Especially in the case of PND, GEKO stipulates the process of genetic counseling very concretely, based on GenDG. In the case of PND and PID, it is important that the people concerned understand the meaning of testing in various angles, and restructuralize it by combining it with their own values as the diagnosis is directly combined with pregnancy/abortion, which influences the whole life of a woman (and her partner). In this context, the South Korean BBA needs to be amended as soon as possible. The sections on informed consent also need to be amended to make them more concrete. Furthermore, guidelines for concretizing the regulation of BBA need to be continuously formulated and developed.

The Use of Traditional and Complementary Medicine among Patients with Chronic Diseases in Mainland Northern Suburbs of Penang, Malaysia

Purpose: The aim of this study is to find an advanced solution for classification of herbal medicinal preparations. In Korea pharmaceutical affairs act, regulations of herbal medicinal preparations are too vague to be industrial used. In this procedure, we can provide a reasonable way to classify herbal medicinal preparations for effective industrial use. Methods: We researched terms of herbal medicinal preparations from regulations of advanced countries which have reasonable ways to classify herbal medicinal preparations for industrial use. And also, we studied submitted materials for approval from advanced countries regulations. Through this procedure, we collected reasonable articles andmaterials, and finally reflected those to Korean regulation. Results: In regulations of advanced countries, includingUS, European union, China and Japan, herbal medicinal preparations were used and approved as medicinal products on the basis of clear regulations. In addition to this, herbal medicinal preparations were approved as new drugs under certain circumstances. Conclusion: We should utilize regulations from advanced countries, we reflect them into Korean regulation. Though this, we can make Korean herbal medicinal preparations be useful and industrial, as a result we can use herbal medicinal preparations for public health. Contact: Ji-Hoon Kim, skynme23@naver.com

Suggestion of Classification of Herbal Medicinal Preparations Based on Advanced Country Regulations

Purpose: The aim of this study is to find an advanced solution for classification of herbal medicinal preparations. In Korea pharmaceutical affairs act, regulations of herbal medicinal preparations are too vague to be industrial used. In this procedure, we can provide a reasonable way to classify herbal medicinal preparations for effective industrial use. Methods: We researched terms of herbal medicinal preparations from regulations of advanced countries which have reasonable ways to classify herbal medicinal preparations for industrial use. And also, we studied submitted materials for approval from advanced countries regulations. Through this procedure, we collected reasonable articles andmaterials, and finally reflected those to Korean regulation. Results: In regulations of advanced countries, includingUS, European union, China and Japan, herbal medicinal preparations were used and approved as medicinal products on the basis of clear regulations. In addition to this, herbal medicinal preparations were approved as new drugs under certain circumstances. Conclusion: We should utilize regulations from advanced countries, we reflect them into Korean regulation. Though this, we can make Korean herbal medicinal preparations be useful and industrial, as a result we can use herbal medicinal preparations for public health. Contact: Ji-Hoon Kim, skynme23@naver.com

Integrative medicine outcome and patient satisfaction in Saudi Governmental hospitals

Purpose: The aim of this study is to find an advanced solution for classification of herbal medicinal preparations. In Korea pharmaceutical affairs act, regulations of herbal medicinal preparations are too vague to be industrial used. In this procedure, we can provide a reasonable way to classify herbal medicinal preparations for effective industrial use. Methods: We researched terms of herbal medicinal preparations from regulations of advanced countries which have reasonable ways to classify herbal medicinal preparations for industrial use. And also, we studied submitted materials for approval from advanced countries regulations. Through this procedure, we collected reasonable articles andmaterials, and finally reflected those to Korean regulation. Results: In regulations of advanced countries, includingUS, European union, China and Japan, herbal medicinal preparations were used and approved as medicinal products on the basis of clear regulations. In addition to this, herbal medicinal preparations were approved as new drugs under certain circumstances. Conclusion: We should utilize regulations from advanced countries, we reflect them into Korean regulation. Though this, we can make Korean herbal medicinal preparations be useful and industrial, as a result we can use herbal medicinal preparations for public health. Contact: Ji-Hoon Kim, skynme23@naver.com

Mercury Contents of Medicinal Plants and the Cultivated Soils in Korea

This study was conducted to identify transition characteristics of mercury in several selected medicinal plants and to find the appropriate management for production of safety food. Cultivated soils and medicinal plants were collected at 29 sites for Angelica gigas (Korean angelica root), 68 sites for Platycodon grandiflorum (Balloon flower), 35 sites for codonopsis lanceolata (Deoduck), 36 sites for Dioscorea batatas (Chinese yam), 32 sites for Rehmannia glutinosa (Foxglove), 16 sites for Cnidium officinale makino (cnidium), and 26 sites for Astragalus membranaceus (milk vetch root) during the harvest season of 2013. Mercury in the soils and medicinal roots were analyzed with a Direct Mercury Analyzer. Average content of mercury in soils cultivated medicinal plants was 0.023 mg kg -1 (range: from 0.003 to 0.074 mg kg -1 ) and average content of mercury in medicinal plants was 0.003 mg kg -1 (range: from 0.001 to 0.011 mg kg -1 ), indicating that mercury in the surveyed soils and medicinal plants were not exceeded the Korean regulation.

비대칭적 네트워크 가치 환경에서의 인터넷망 대가정산 모형

Internet is composed of many independent networks referred to as Internet Service Providers (ISPs) and each provider is generally interconnected based on a commercial agreement. Though many countries are engaged in deregulation in internet interconnection, there is still debate whether the large ISPs are unwilling to peer with small providers, have incentives to lower the quality of data transmission of transit operators or set the interconnection charge regarding the actual costs incurred by the interconnection. Korean government introduced regulations in internet interconnection after observing noticeable anti-competitive behaviors from 2005. This paper analyzes whether there is margin squeeze problem/market concentration, and suggests political proposals in Korean regulation status.

Treatment of Diesel-Contaminated Soil by Fenton and Persulfate Oxidation with Zero-Valent Iron

The objective of this research is to investigate Fenton and persulfate oxidation with zero-valent iron [Fe(0)] as a batch type ex-situ remediation technology for the treatment of diesel-contaminated soil. Results from batch experiments indicate that Fe(0) is a better catalyst for H2O2 and persulfate than Fe2+ for the enhancement of Fenton and persulfate oxidation in a batch system. Maximum removal was obtained after 12 h when 1 and 2 g of Fe(0) were added to hydrogen peroxide (250 mg/L) and persulfate (250 mg/L), respectively, in a soil-water system. As the amounts of Fe(0) and persulfate were increased three times at the optimal ratio, the removal of total petroleum hydrocarbon (TPH) was enhanced accordingly. More than 90% of the TPH was removed in 3 h, and the treated soil met the Korean regulation level (500 mg/kg) for TPH. Increased amounts of Fe(0) and hydrogen peroxide (up to 10 g and 1250 mg/L, respectively) also significantly enhanced degradation under the optimal conditions. The results of our study suggest that Fe(0)-assisted Fenton and persulfate oxidation in a batch reactor may be an alternative option to treat diesel-contaminated soil.

1MWe급 순환유동층 열병합 보일러 운전연구

폐기물 고형연료의 순환유동층 연소기술의 시범을 위하여 파일롯트 규모 순환유동층 연소보일러를 설계하고 건설하였다. 보일러의 규모는 출력기준 약 6 MWth에 해당하며 증기질은 <TEX>$400^{\circ}C$</TEX>, 38 ata로 설계하였다. 최대 증기출력은 약 8 ton/h에 해당한다. 연료는 RDF로 휘발분을 주성분으로 하며 점화가 빠르고 연소성이 매우 뛰어났으며 보일러의 연소효율은 99.5%를 능가하였다. 순환유동층 RDF 연소의 안정성은 연료중 회분 이외의 이물질의 존재 여부와 신속한 배출 가능성에 크게 의존하였다. 오염물질의 배출농도는 염소를 제외하고는 법적 기준치 이내에 들었다. 또한 60% 정도의 연료중 염소는 비산재에 흡수되는 것으로 나타났다. HCl을 국내 법 규제에 맞추어 제어하기 위해서는 건식 또는 습식 흡수 장치와 같은 별도의 환경설비가 필요하였다. A pilot scale circulating fluidized boiler (CFB) for refuse derived fuel (RDF) is designed and constructed to demonstrate a performance of CFB technology for waste fuel utilization. The boiler has a design capacity of 6 MWth with <TEX>$400^{\circ}C$</TEX> 38 ata steam generation performance. The maximum steam rate of the boiler was about 8 ton/h. The main component of the fuel was RDF (Refuse Derived Fuel) with high volatile contents and showed fast ignition and easy combustion. The pilot plant showed over 99.5% of combustion efficiency. Stable operation of RDF CFBC depended on the content of non combustion materials other than ash and fast removal of them. Emission level was under legal limit except that of HCl without external flue gas treatment facilities. Also about 60% of fuel chlorine was absorbed to fly ash particles. For HCl emission control flue gas treatment technology is required such as wet and dry scrubber in order to comply with Korean regulation.

Leaching behavior of toxic chemicals in recycled aggregates and their alkalinity

In this study, according to two kinds of test methods, the waste official test (WOT) method and the soil contamination official test (SCOT) method applied to domestic harmful substance analysis by Korean regulation, ten kinds of harmful substance values for two kinds of natural aggregates (crushed stone and sea sand) and three kinds of recycled aggregates (road use aggregate, coarse aggregate and fine aggregate) were analyzed, as well as their alkalinity levels. Through this analysis, it was found that recycled aggregates had a higher harmful substance value than natural aggregates, but were still within the standard values and were safe. The pH levels of natural aggregates and recycled aggregates were measured by grinding the specimens according to the testing methods, and the results indicated that the natural aggregate was below pH 9, while the recycled aggregates were found to have a strong alkalinity of pH 11. The pH measurement of recycled aggregates according to grain size and eluting time indicated that a small grain size yielded an initially high pH value that changed little over eluting time, while aggregates with a large grain size had a relatively low initial pH value, but increased with eluting time. In addition, the pH of recycled aggregates was higher for smaller grain sizes, and the WOT method yielded higher pH levels than the SCOT method.

종곡선과 완화곡선 경합시 차량주행안전성 및 승차감에 대한 해석적 연구

Superimposition of vertical and transition curves is not allowed for all types of tracks in Korean regulation of railway construction. However, this criterion has been established on the basis of difficulty of maintenance of the ballasted track. Comparing with the ballasted track, the concrete slab track has the advantage of maintenance and structural, which allows the superimposition of vertical and transition curves when it satisfies the criteria of running safety and riding comfort. In this study, running safety, ride comforts and track acting forces were analyzed and compared by numerical analysis using VAMPIRE program when the vertical and transition curves are superimposed for the ballasted track as well as the concrete slab track. From the analysis results, it was found that running safety, riding comforts and track acting forces in case of superimposition of vertical and transition curves for the both tracks meet all of the criteria. Therefore, although superimposition of vertical and transition curves for the ballasted track is not allowed because of a lot of maintenance works, it can be applied to the concrete slab track considering the advantage of maintenance and structural safety.

플라이애쉬-점토-광미계의 소결특성

본 연구는 석탄회(Fly Ash)와 점토를 이용하여 광미(tailing)의 중금속 안정화를 연구하였다. 플라이애쉬-점토-광미계의 특성은 여러 분석기기(SEM, XRD, XRF, TG-DTA, Dilatometer, UTM)를 이용하여 광미의 첨가량에 따른 물리 화학적 특성을 조사하였다. 플라이애쉬의 화학조성은 <TEX>$SiO_2$</TEX>가 33.01 wt%, <TEX>$Al_2O_3$</TEX>는 28.54 wt%, CaO가 9.97 wt%이고 이외에 <TEX>$Fe_2O_3$</TEX>와 알카리 성분 등을 함유하고 있으며, 강열감량은 플라이애쉬가 20.26 wt%로 나타났다. 플라이애쉬의 <TEX>$SiO_2$</TEX>와 <TEX>$Al_2O_3$</TEX> 조성양은 점토성분이 61 wt% 이상이다. 그리고 광미의 화학조성은 <TEX>$SiO_2$</TEX>가 26.91 wt%, CaO가 24.25 wt%, <TEX>$Fe_2O_3$</TEX>는 22.97 wt%이다. 그러므로 플라이애쉬-점토-광미계에서 플라이애쉬가 점토의 원료로 대체가 가능하다. 시편의 수축은 <TEX>$850^{\circ}C$</TEX> 부근에서 서서히 수축이 시작되어 <TEX>$1100^{\circ}C$</TEX> 부근에서 급격하게 수축하는 것을 볼 수 있었으며 플라이애쉬의 탄화 분해 과정에 의해 영향을 받는다. 시편의 미세구조는 광미를 첨가한 시편이 치밀하였다. 열처리 온도에 따른 물리적 특성 조사를 위하여 흡수율과 압축강도를 측정하였으며 광미를 첨가한 시편의 압축강도가 높으며 약 200~420 kgf/<TEX>$cm^2$</TEX>로 KS L 4201의 점토 블록 기준 내에 있다. 그리고 광미의 중금속의 안정화는 소결한 후에 한국폐기물 규격내에서 안정화한 것을 알 수 있다. This research was performed to stabilize heavy metals in mine tailing using fly ash and clay. Fly ash-clay-mine tailing system were investigated using XRD (X-ray diffractometer), XRF (X-ray fluorescence spectrometer), TG-DTA, SEM (Scanning Electron Microscope), Dilatometer and UTM with various mine tailing contents (~15 wt%). The fly ash used in this research was mainly composed of <TEX>$SiO_2$</TEX> (33.01 wt%), <TEX>$Al_2O_3$</TEX> (28.54 wt%), <TEX>$K_2O$</TEX> (3.32 wt%), <TEX>$Fe_2O_3$</TEX> (1.47 wt%), CaO(9.97 wt%). <TEX>$SiO_2$</TEX> and <TEX>$Al_2O_3$</TEX> composition of the clay was over 61 wt%. And the mine tailing have high composition of <TEX>$SiO_2$</TEX> (26.91 wt%), CaO (24.25 wt%), <TEX>$Fe_2O_3$</TEX> (22.97 wt%). Therefore, it was estimated that fly ash-clay-mine tailing have enough sintering characteristics. The shrinkage of specimens started at around <TEX>$850^{\circ}C$</TEX> and changed little up to <TEX>$1100^{\circ}C$</TEX>, but increased markedly at above <TEX>$1100^{\circ}C$</TEX>. The shrinkage rate is strongly related to the decarbonization amount of coal fly ash. As the result of SEM, structure of the specimens with mine tailing addition showed more close than the one without mine tailing. Compressive strength of the specimens with mine tailing was highly increased to approximately 200~420 kgf/<TEX>$cm^2$</TEX>, it satisfied the first grade criterion for clay brick by KS L 4201. The specification of leaching characteristics of the sintered specimens were within the Korean regulation standard.