• Proceedings of the Korean Institute of Building Construction Conference
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• 2018.05a
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• pp.230-231
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• 2018

Recently, the danger for radioactive materials has become a hot topic. Beginning with the Chernobyl nuclear accident in 1996, in 2011, the Fukushima nuclear power plant in Japan suffered major damage such as large-scale casualties and radioactive dangerous area selection. Concerns about leakage of radioactive materials due to recent earthquakes have been deepening in Korea, such as Wolsong Nuclear Power Plant in Gyeongju, and there is a growing interest in the safety of radioactive materials through the media and the media. However, the route to exposure to radioactive materials is not limited to these large-scale nuclear accidents. Typical examples of this are radioactive substances exposed in daily life. In the case of radon gas, the danger is being revealed through current events programs and news, and natural radiation exposure is attracting attention.

• KIEAE Journal
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• v.7 no.5
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• pp.93-98
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• 2007

Effort has been performed for latest 20 years to improve resident's comfort and indoor environment in building. And interest and effort to improve indoor air environment among various indoor environment elements have continuously increased since 1990s, because it is examined scientifically that various contaminants generated indoor affect human body. Specially, indoor air contaminants generated from apartments are those exhausted from resident's indoor environment, closing materials and household. Indoor air environment in buildings is different according to pollution degree, existence availability of pollution source, ventilation amount, and meteorology. It is known that other contaminants more than about 900 kinds generate according to a kind of work or action in a room. Specially, nowadays buildings are well insulated and confidentiality-centered for environment protection and economical side. So indoor air contaminants are generated from indoor air pollution sauces of unprepared ventilation, human body carbon dioxide emissions, and various building materials. when these are accumulated in long term human body, it is harmful to resident's health, but awareness for this is very insufficient. Because bedroom is space that people inhabit for a long time by unconscious state and indoor environment occupies important part for resident's health and quality of life at sleep, the actual condition of air quality is investigated, improvement countermeasure is considered, and ventilation amount is analyzed. In this study, putting case that the most longest stayed time is sleeping time when people inhabit in the apartment, the air quality according to volume of bedroom space at sleep was measured and analyzed, and the data acquired will be the basis for improvement on this.

• Journal of the Korean Recycled Construction Resources Institute
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• v.4 no.4
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• pp.431-438
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• 2016

Recently, Both rapid economic growth and high-quality native finishing materials demand in buildings such as local infrastructure facilities and cultural facilities have increased along with local quarries. So, increasing local quarries and environmental pollution occurred in quarries get the eyes to damaged area of the surroundings. As an example, carcinogen such as solid formed to fixing asbestos and dust have damaged to local resident. Especially, Radon gas released from asbestos can exist everywhere on earth, released soil and rock as radioactive substances, can be caused lung cancer followed by a smoking. When pollution source to indoor air quality that lacking ventilation rate of the residential building moved in a cycle, human responses such as headache, dizziness, etc. get appear, so on it threatened resident's physical condition. Thus, we need to urgent attention to reduction harmful substance. In the case of radon gas of the pollution source to indoor air quality in housing, it has characteristic that keep on going through half-life released from source, we need to control radon gas source than source removal. We set on vermiculite addition ratio to 10% which has harmful substances adsorption performance, proceed experiment to basalt waste rock addition ratio 50, 60, 70, 80(%). The result of an experiment, based on 'KS F 4035, precast terrazzo', we can be obtainable in the best terrazzo at basalt waste rock addition ratio 70%.

• Proceedings of the SAREK Conference
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• 2008.06a
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• pp.702-707
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• 2008

Improving quality of life and wellbeing of the residential environment and increased interests and importance is growing confidentiality, insulation, high-rise due to a lack of ventilation and indoor air pollution. Several human diseases caused tremendously due to the indoor air which consists of formaldehyde, radon, pollutants such as volatile substances that is called the phenomenon of a new house syndrome. It has become a world-wide issue that the United States, Japan and several other countries of Europe are showing more interests. Furthermore, a lot of damages caused by the syndrome occurs in the new house should be resolved by somehow is urgent. Thus, this study would like to propose the measures based on the whether condition and the way of heating in korea against a new house syndrome via analysis of indoor contaminant Reduction comparison according to vary ventilation and humidity when operating bake-out on a new apartment.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2020.11a
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• pp.135-136
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• 2020

Recently, there is a problem that is most important in constructing buildings and building materials. It is a harmful substance generated in buildings. These harmful substances are CO₂, radon and formaldehyde, volatile organic compounds generated from building materials. These are bad for the human body, may have a negative effect and cause large illnesses such as cancer. Recently built apartments have a high density, so there is a problem that harmful substances do not escape well. As a result, people's interest in indoor air quality is growing and in order to solve this problem and various researches are being conducted on the materials used for concrete pouring to find out how much the materials used adsorb harmful substances. this study uses carbon black as a material that can adsorb these harmful substances. The purpose of this study is to measure the bending strength, compressive strength, and to determine whether the paste containing carbon black can improve indoor air quality.

• Proceedings of the Korea Air Pollution Research Association Conference
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• 1999.10a
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• pp.297-298
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• 1999

라돈과 라돈 낭핵종은 예전부터 생활환경 중에 존재해 왔던 것으로 최근 산업화등으로 인해 급격히 증가하는 다른 오염물질과는 그 발생원이 다소 차이가 있지만 폐암, 위암등의 암을 유발시키는 중요한 요인이라는 것이 미국, 캐나다, 체코의 우라늄 광산 및 스웨덴, 영국의 비우라늄 광산에서 확인된 바 있어 그 관리의 중요성이 나날이 대두되고 있다(Guimond 등, 1979; UN, 1977).(중략)

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2000.11a
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• pp.130-131
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• 2000

라돈(Rn-222)은 우라늄(U-238) 방사능계열의 원소로서 라듐(Ra-226)의 붕괴시 자연생성되는 가스상 물질이다. 화학적으로는 불활성이며 무색, 무취의 특성을 가지고 있다. 공기보다 8∼9배 무겁기 때문에 지표면 가깝게 존재하므로 인체노출이 쉬운 물질로 알려져 있다. 라돈은 최근까지도 온천 등지에서 건강에 매우 좋은 원소로 알려져 왔으나 사실은 기준치 이상의 라돈을 마시거나 호흡했을 경우, 치명적인 폐암을 유발시킨다는 것이 밝혀졌다(Doull et al, 1999) (중략)

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2001.11a
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• pp.237-238
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• 2001

라돈(Rn-222)은 우라늄(U-238) 방사능계열의 원소로서 라듐(Ra-226)의 알파($\alpha$)붕괴시 자연생성되는 가스상 물질이다. 암석 내에서 생성되어 공극내에서 물에 용해된 라돈은 붕괴하지 않고 상태를 유지하게 되는데 이런 라돈이 존재하는 암석층으로부터 지하수를 취수할 경우, 상당량의 라돈이 지하수속에 용해되어 있을 수 있다. 이렇게 용해된 상당량의 라돈은 실내공기로 휘발하면서 주변으로 확산하게 된다. (중략)

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2002.04a
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• pp.117-118
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• 2002

본 연구에서는 지하수로부터 방출된 실내라돈오염을 해석하기 위한 수학적 모델에서 모델인자들의 불확실성을 고려하고 인체축적량을 정량적으로 해석하는 PBPK모델을 사용하여 호흡을 통한 라돈의 인체축적량을 보다 현실적으로 평가하려고 한다. 우선, 전에 사용한 3 구역모델을 샤워실과 화장실을 구분하는 경계가 없다는 국내실정을 감안하여 보다 현실적으로 개량한 2-구역 모델을 개발하였다. (중략)

• Journal of the Korean Society of Radiology
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• v.5 no.5
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• pp.231-235
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• 2011

Radium is rock or soil of crust or uranium of building materials and thorium after radioactivity collapse process are created colorless and odorless inert gas that accrue well in sealed space like mine or basement. It inflow to lung circulate respiratory organ and caused lung cancer because of deposition of lung or bronchial tubes. Radium sheath of medical institution treat person's life is possible big danger to professional regarding radioactivity who has much amount exposed radioactivity and weaker immune patient. so we do this test. Using measuring instrument at test is real time radium measuring instrument, Professional Continuous Radon monitor, and measuring places are basement first floor and second floor of two hospitals and measure from 10 a.m to 3 p.m. Measurement result of Professional Continuous Radon monitor is minimum 14.8 Bq/$m^3$ to maximum 70.3 Bq/$m^3$ and show domestic baseline below 148 Bq/$m^3$, effective dose-rate is minimum 0.296 mSv to maximum 1.406 mSv that show 2.4 mSv, 10~58.3% level, exposed radiation amount from nature radiation one year.