재료의 흡수상태에 따른 콘크리트의 물리적 변화에 관한 기초적 연구

한다희,황병준,박희곤,이영도,정상진 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.1(구조계)

Most concrete is recently made of an aggregate which is properly absorbed, and carried in it in order to do capability at every fields. We have been close to demand new capability of high flowing and enduring for specific concretes. That is difficult to cope with claiming the efficiency on deterioration from lack of a high quality aggregate. Therefore, For solving the problems we apply to a packing method for using dried materials. That is to say it is a kind of making into an instant. In this study, There is a purpose to present fundamental data, comparing and analyzing a phenomenon about aggregate's absorption following the rate of adding water, for using existing materials.

건조된 재료를 혼합 포장한 콘크리트의 특성에 관한 기초적 연구-흡수율이 높은 골재 사용 중심으로-

한다희,김광기,정상진 한국건축시공학회 2007 한국건축시공학회지 Vol.7 No.1

Ordinary concrete uses aggregate sufficiently soaked with water, and is weighed, mixed with other materials and placed in accord with performances required in the construction field. Recently special concrete with high fluidity and durability is required but it is difficult to use top-quality concrete due to lack of high-quality aggregate, delayed transportation because of traffic jam, etc. In addition, sometimes the use of a remicon is inevitable just for small-sized concrete constructions or it is difficult for a remicon to reach remote construction places such as mountainous areas. To solve these problems, this study attempted to pack concrete materials. In other words, it is to instantize concrete.This study dried aggregate, a material of concrete, and compared the change of absorption phase of the aggregate in water and in paste in order to examine the effect of the dryness of aggregate on its absorption rate and, based on the absorption rate, decided water addition ratio necessary for the reduction of unit quantity caused by the use of dry aggregate in designing concrete mixture, and analyzed the properties of unhardened concrete according to water addition ratio in manufacturing concrete using aggregate in the state of absolute dryness and in the state of surface dryness.

건조 재료를 사용한 콘크리트의 포장화에 관한 실험적 연구

한다희,박희곤,백민수,김성식,이영도,정상진 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.2

Most concrete is recently made of an aggregate which is properly absorbed, and earned in it in order to do capability at every fields. We have been close to demand new capability of high flowing and enduring for specific concretes. That is difficult to cope with claiming the efficiency on deterioration from lack of a high quality aggregate. Therefore, For solving the problems we apply to a packing method for using dried materials. That is to say it is a kind of making into an instant. In this study, There is a purpose to present fundamental data, comparing and analyzing a phenomenon about aggregate's absorption following the rate of adding water, for using existing materials.

사회적 비용의 관점에서 바라보는 계약과 우리 민법의 태도

한다희,김도훈 이화여자대학교 법학전문대학원 2024 Ewha Law Review Vol.13 No.-

사적 자치의 원칙은 사법(私法)의 기본원리로서 이로부터 계약자유의 원칙, 계약의 구속력 등 계약법 이론을 구성하는 다양한 원칙들이 파생된다. 사적 자치의 원칙은 흔히 각자가 자신의 의지에 따라 생활관계를 전개하고 형성할 수 있어야 한다는 이념으로 표현된다. 그러나 사적 자치의 이면에는 누구도 자신의 의사에 기하지 않고서는 자유가 제약되어서는 안 된다는 또 다른 원리가 자리하고 있다. 지금까지의 계약법 이론은 계약을 평가함에 있어서 계약 내부의 당사자들만을 고려하는 관점을 취해 왔다. 그러나 계약은, 인간의 모든 행위가 그러하듯이 대부분 계약 당사자 외의 제3자에게도 영향을 미친다. 일반적인 경우 그러한 영향은 사회적으로 용인되는 수준이나, 그 비용이 지나치게 커진다면 규제할 필요가 생긴다. 그러나 계약자유의 원칙의 부작용을 최소화하기 위한 제한 법리조차도 당사자 간 불평등에 초점을 맞춘다. 이에 계약 외부에 존재하는 제3자는 계약법의 이론 체계 안으로 포함되기보다는 불법행위법의 영역에 방치되고 있다. 이 글은 제3자를 계약법 이론의 체계로 편입시키고자 하는 미국 학계의 이론들을 먼저 검토한다. 그리고 계약의 사회적 비용을 사법(司法)을 통해 규제하려는 관점이 우리 민법에서 어떤 위치를 차지하고 있는지를 학설과 판례를 통해 알아보고자 한다. 또한 최근 서울중앙지방법원에서 내려진 판결을 통해 사회적 비용 규제의 관점이 법원의 판단에서 어떤 방식으로 견지되어야 하는지 논증한다. 계약은 개인 간에 자유롭게 체결될 수 있어야 하고 일단 체결된 계약은 구속력을 가진다. 법관이 계약 외부의 손익을 고려하여 계약을 바라보는 것은 금기시되어 있다. 그러나 예상치 못한 위험이 언제든 발생할 수 있는 현대 사회에서는 계약을 당사자가 아닌 그 계약을 둘러싼 제3자, 공동체의 관점에서 바라보는 것도 필요하다는 점에서 논의의 의의가 있다. The principle of private autonomy is often expressed in terms of the idea that each person can develop and shape their life relationships according to their will. But behind that principle lies another principle: no one should be able to restrict the other’s freedom without his consent. However, contracts often have an impact on the third parties outside of the contracting parties. In most cases, these impacts are socially acceptable, but when the costs become excessive, it is necessary to regulate them. Even the doctrine of limitation has focused on the inequality between the parties, leaving the third parties outside the contract to the realm of tort law rather than incorporating them into the theoretical framework of contract law. This article first reviews the theories of American academics that seek to incorporate third parties into the theoretical framework of contract law. It then examines the place of the view of judicial regulation of the social costs of contracts in Korean civil law. How the perspective of social cost regulation should be upheld in the court’s judgment through a recent decision of the Seoul Central District Court is also discussed here. Generally, the judges are refrained from looking at contracts by considering gain and loss outside the contract. However, in the modern society, where unforeseen risks can arise at any time, it is necessary to look at contracts not only from the perspective of the parties, but also from the perspective of third parties and the community surrounding the contract.

도시 저소득층의 프탈레이트 노출수준과 관련 요인: 거주 취약집단을 중심으로

한다희,강지윤,한서희,진호현,김차훈,임호섭,김기태,조용민 한국환경보건학회 2022 한국환경보건학회지 Vol.48 No.6

Background: Socioeconomical disadvantaged communities are more vulnerable to environmental chemical exposure and associated health effects. However, there is limited information on chemical exposure among vulnerable populations in Korea. Objectives: This study investigated chemical exposure among underprivileged populations. We measured urinary metabolites of phthalates in urban disadvantaged communities and investigated their correlations with residential environment factors and relative socioeconomic vulnerability. Methods: Urine samples were collected from 64 residents in a disadvantaged community in Seoul. A total of eight phthalate metabolites were analyzed by liquid chromatography-mass spectroscopy. Analytical method used by the Korean National Environmental Health Survey (KoNEHS) was employed. Covariate variance analysis and general linear regression adjusted with age, sex and smoking were performed. Results: Several phthalate metabolites, namely monomethyl phthalate (MMP), monoethyl phthalate (MEP), mono-(2-ethyl-5-hydroxyhexyl) phthalate (MEHHP), and mono-n-butyl phthalate (MnBP) had higher levels than those reported in the adults of 4th KoNEHS. Notably, the MnBP level was higher in the lower socioeconomic group (geometric mean [GM]=47.3 µg/g creatinine) compared to non-recipients (GM=31.9 µg/ g creatinine) and the national reference level (GM=22.0, 28.2 and 32.2 µg/g creatinine for adults, 60’s and 70’s, respectively.). When age, sex and smoking were adjusted, MEP and MnBP were significantly increased the lower socioeconomic group than non-recipients (p=0.014, p=0.023). The lower socioeconomic group’s age of f looring were higher than non-recipients, not statistically significant. Conclusions: These results suggest that a relatively low income and aged f looring could be considered as risk factors for increased levels of phthalate metabolites in socioeconomic vulnerable populations.

석탄 화력발전소에서 발생하는 유해인자와 건강영향에 대한 문헌기반 모식도 작성

한다희,김태황,최예진,한서희,김수현,최경화,조용민 한국환경보건학회 2021 한국환경보건학회 학술대회 자료집 Vol.2021 No.2

페드로 로메로(Pedro Romero)_지속가능한 자원과 인프라의 회복력

한다희,페드로 로메로(Pedro Romero) 국토연구원 2018 국토 : planning and policy Vol.442 No.-

탄소중립시대, FTA를 활용한 전기차용 히트펌프의 글로벌 시장 진출 전략연구

한다희,박세현 한국관세학회 2023 관세학회지 Vol.24 No.3

기후 변화로 인한 탄소중립 정책이 시행됨에 따라 친환경 이동수단 또한 함께 중시되고 있다. 대표적인 친환경 이동수단인 전기자동차는 에너지 효율 면에서 내연기관 자동차의 이점을 누리지못하고 있다. 이와 같은 에너지 비효율 문제를 해결할 수 있는 에너지 절감형 제품인‘히트펌프시스템’을 수출 품목으로 선정하여, 강도 높은 환경규제를 시행하고 있는 체코(EU) 시장과 잠재적수요가 높은 중국, 인도 시장에 진입하기 위한 FTA 활용 전략을 제시하고자 한다. 본 연구를 통해한국 제품이 가격 경쟁력을 확보하고, 국가별 무역기술장벽에 대비한다면 세계 히트펌프 시장에서우위를 점할 수 있을 것이라 기대한다. As response to climate change, carbon neutrality is becoming a crucial issue in many industries. The Eco-friendly transportation industry is influenced by this movement too. But typical eco-friendly means of transportation, electric vehicle is more inefficient than internal combustion engine vehicle. Therefore, this study selects for an export item‘heat pump system’that is expected to solve these energy inefficiency problems. This study expects Korean heat pump industry to have advantage over global‘heat pump market’when enterprises respond to Technical Barriers to Trade(TBT) well.

혼합 포장된 콘크리트 재료의 특성에 관한 실험적 연구

한다희,정상진 대한건축학회 2006 大韓建築學會論文集 : 構造系 Vol.22 No.12

Ordinary concrete uses aggregate sufficiently soaked with water, and is weighed, mixed with other materials and placed in accord with performances required in the construction field. Recently special concrete with high fluidity and durability is required but it is difficult to use top-quality concrete due to lack of high-quality aggregate, delayed transportation because of traffic jam, etc. In addition, sometimes the use of a remicon is inevitable just for small-sized concrete constructions or it is difficult for a remicon to reach remote construction places such as mountainous areas. To solve these problems, this study attempted to pack concrete materials. In other words, it is to instantize concrete.This study dried aggregate, a material of concrete, and compared the change of absorption phase of the aggregate in water and in paste in order to examine the effect of the dryness of aggregate on its absorption rate and, based on the absorption rate, decided water addition ratio necessary for the reduction of unit quantity caused by the use of dry aggregate in designing concrete mixture, and analyzed the properties of unhardened concrete according to water addition ratio in manufacturing concrete using aggregate in the state of absolute dryness and in the state of surface dryness.

건조 재료를 사용한 콘크리트의 포장화에 관한 기초적 연구

한다희,박희곤,임남기,김성식,이영도,정상진,Han, Da-Hee,Park, Hee-Gon,Lim, Nam-Gi,Kim, Sung-Sik,Lee, Young-Do,Jung, Sang-Jin 한국건축시공학회 2003 한국건축시공학회지 Vol.3 No.4

Most concrete is recently made of an aggregate which is properly absorbed, and carried in it in order to do capability at every fields. We have been close to demand new capability of high flowing and enduring for specific concretes. That is difficult to cope with claiming the efficiency on deterioration from lack of a high quality aggregate Therefore, For solving the problems we apply to a packing method for using dried materials. That is to say it is a kind of making into an instant. In this study, There is a purpose to present fundamental data, comparing and analyzing a phenomenon about aggregate's absorption following the rate of adding water, for using existing materials.