지반개량재 혼합에 따른 해안점토와 사질토에서의 강도증진에 관한 연구

이광준,Lee, Kwang-Joon 한국지하수토양환경학회 2009 지하수토양환경 Vol.14 No.3

본 연구는 해안점토 또는 육상의 사질토에 지반개량재를 혼합하였을 때 어떤 강도변화를 보이는지에 관한 것이다. 철광석을 제련할 때 부산물인 슬래그와 제지류 소각할 때 생기는 paper fly ash를 일정한 비율로 혼합하여 지반개량재를 만들었다. 이러한 지반개량재를 해안점토와 육상의 사질토에 혼합한 후 함수비, 양생일, 혼합비 등으로 구분하여 일축압축강도 시험용 공시체를 제작하였다. 공시체가 28일간 양생되는 동안 일축압축강도의 변화와 생성물질의 변화를 분석하였다. 강도분석 결과 육상의 사질토보다 해안점토에서 최대 11배 정도의 강도증가의 효과가 나타났는데, 이는 지반개량재로 인한 ettringite 반응이 사질토보다 해안점토에서 명확하게 보여주는 것을 의미한다. This is a study about how the increase of strength is changed when ground improvement material is mixed with either coastal clay or sandy soil. The ground improvement material was made from mixing a certain proportion of the slag which is by-products generated by smelting the iron ore and the paper fly ash which is formed by bumping up the paper. The ground improvement material was added to coastal soil and sandy soil each. And then according to ratio of water contents, number of curing days and ratio of mixture, specimen for uniaxial compression test was made. The change of uniaxial compression strength and the generated substances was analyzed while the specimen is being cured for 28days. The result of analysis shows that the strength of coastal clay was increased about eleven times more than that of sandy soil. This means that ettringite reaction by ground improvement material becomes more distinctive in the coastal clay than in the sandy soil.

점질토와 사질토에서의 지반개량재 혼합에 따른 압축강도반응에 관한 연구

이광준 ( Kwang-joon Lee ) 한국환경기술학회 2009 한국환경기술학회지 Vol.10 No.2

철광석을 제련하면 고로슬래그가 발생하고, 제지류를 소각하면 paper fly ash가 부산물로 발생한다. 이러한 소각잔재물들은 해안점토 구성된 연약지반의 개량에 많이 쓰이게 된다. 본 연구에서는 해안점토 또는 육상의 사질토에 지반개량재를 혼합하였을 때 어떤 강도변화를 보이는지에 관한 연구이다. 따라서, 지반개량의 대상흙을 해안점토와 육상의 사질토 지반으로 구분하여 지반개량재의 반응특성을 검토하였다. 지반개량재를 혼합한 후 함수비, 양생일, 혼합비율 등으로 구분하여 일축압축강도의 변화와 생성물질의 변화를 분석하였다. 실험결과 해안점토는 지반개량재에 대한 효과가 뚜렷한데 반해서, 사질토에서는 작은 효과를 나타내는 것을 확인하였다. 양생 28일의 강도증가 변화를 검토한 결과 해안점토가 사질토보다 11배 정도의 강도증가의 효과를 확인할 수 있었다. 이는 지반개량재의 혼합비율이 증가할수록 ettringite 반응이 증가하기 때문이다. As the blast furnace slag is generated by smelting the iron ore, burning up the paper causes paper fly ash as by-products. These waste residuals by fire are used a lot to improve soft ground. This research reports what the change of strength is, if ground improvement material is added to either coastal clay or silty sandy soil. Therefore, after the target soil for ground improvement was divided coastal soil into silty sandy soil, the characteristics of the reaction of ground improvement was re-examined. First ground improvement material was added to each soil and then it was separated by a function ratio, curing days and a mixed rate and so on. Then the changes of uniaxial compress strength test and the generated substances were analyzed. As a result of experiment, the effect of ground improvement material on the coastal clay was clear. Instead, that on silty sandy soil was little. For 28 curing days, in terms of increase in strength, the effect on coastal clay was eleven times more than that on silty sand soil. It shows that the higher the mixed rate of ground improvement is, the higher ettringite reaction is.

고로슬래그와 제지회 지반개량 혼합토의 비교 연구

이광준(Lee Kwang Joon),이재열(Lee Jae Yeol) 대한토목학회 2003 대한토목학회 학술대회 Vol.2003 No.10

벤토나이트 혼합토의 다짐 및 투수특성에 관한 연구

이광준(Kwang-Joon Lee) 한국엔터테인먼트산업학회 2009 한국엔터테인먼트산업학회논문지 Vol.3 No.2

과거에는 간척지 공사에 있어서 방수재로서의 재료를 점토성 토질을 이용하거나 낮은 함수비의 흙을 이용하여왔다. 그러나 최근에는 벤토나이트를 이용하는 방법이 상용화되고 있다. 상대적으로 높은 투수계수를 지니고 있는 흙을 현장에서 벤토나이트와 혼합하여 방수층을 만드는 방법이 주된 개념이다. 방수층의 두께는 대략 1m 정도로 하였으며, 이 방법을 이용한 방수능력은 사용되는 차수재료의 성능과 시공에 좌우된다. 따라서, 본 연구는 현장에서 흙과 벤토나이트를 혼합한 재료의 다짐과 투수특성을 다짐시험과 변수위투수시험을 통하여 검토하였다. In times past, the waterproof layer in the reclaimed land has been made using the soil materials like a clayey soil or loam having very low permeability. Recently the method using Bentonite has been universally used. The concept of the method make the permeability of the waterproof layer low by mixing Bentonite to in-site soil that has relatively high permeability. The thickness of the waterproof layer is about 1m and the waterproof capacity of this method is dominated by the waterproof capacity of the using waterproof material and construction method. Therefore the compaction and permeability characteristics of the mixed soil material(in-site soil+Bentonite) were investigated in this study through a series of compaction tests and falling head permeability tests.

소각잔재물을 이용한 연약지반개량재의 활용에 관한 연구

이광준 ( Kwang-joon Lee ),권영호 ( Young-ho Kwon ) 한국환경기술학회 2006 한국환경기술학회지 Vol.7 No.2

본 연구는 소각잔재물을 기반으로 하는 새로운 고화재를 이용하여 장비의 주행성 확보가 가능하면서도 식생이 가능한 환경친화적인 표층처리고화공법의 특성을 파악하는 데에 그 목적이 있다. 새만금 사업 등 대규모의 준설매립공사가 서·남해안지역에서 활발하게 진행됨에 따라 초연약 해성점토의 표층처리공법에 대한 연구의 필요성이 날로 증가하고 있다. 따라서, 소각잔재물(제지회, 석탄회, 고로슬래그)을 이용한 연약지반개량재의 품질향상을 파악하고, 지반개량재를 혼합한 점토지반의 강도증진의 변화를 검토하였다. 지반개량재를 일정비율로 혼합한 연약지반의 강도발현의 변화는 혼합비율과 양생일수에 따라서 강도가 증가하는 것을 보였다. 석탄회를 주성분으로 하는 개량재의 강도가 가장 작았으며, 제지회와 석탄회 혼합물, 제지회와 고로슬래그의 혼합물, 석탄회와 슬래그의 혼합물은 연약지반개량에 효과적이었다. ettingite 효과는 한 개의 소각잔재물로 구성된 지반개량재보다 두 개의 소각잔재물이 혼합된 지반개량재에서 보다 큰 발현을 보였다. The purpose of this study clarifies characteristics of a new SLSM(surface layer stabilization method) which is using waste residual from incineration, as hardening agent and is possible to grow plant on the improved ground. The necessity of research for an ultra-soft marine clay surface stabilization method is increasing with each passing day because large dredging and reclamation constructions such as a Saemankum project have been performing briskly both the West and the East coast in Korea. Therefore, this paper investigate the increasement of quality about soft ground improvement material using waste residual(paper fly ash, coke ash, slag). Through this study the authors have analyzed the strength improvement of mixed soft silty clay with improvement materials. The strength of mixed soils with high mixture ratio and more curing days increased. CA-30(cokes 60%) make more low strength improvement than others. Therefore the authors find out that paper fly ash+coal fly ash, paper fly ash+slag or coal fly ash+slag improvement material is more effect in improvement of soft silty clay than cokes+cement. Ettringite reaction effect is more increase in two waste mixed materials than one waste mixed materials.

드라마에 나타난 풍요와 평화를 위한 희생의 불가피성에 관한 연구 : 드라마에 나타난 폭력과 평화의 상관성을 중심으로

이광준 ( Kwang Joon Lee ) 한국연극학회 2008 한국연극학 Vol.0 No.34

올비의 연극에 나타난 현실인식에 관한 연구

이광준 ( Kwang Joon Lee ) 한국연극학회 2009 한국연극학 Vol.0 No.37

Basing the theory of rituals on Edward Albee`s fieldwork in tribal societies of South Central Africa, Victor Turner argues that ritual is the field in which the anti-structural modality of human sociality emerges, and thereby it plays a fundamental role in the process of social life. Turner defines the basic characteristics of ritual as collective, subversive, and therapeutic. In the light of Turner`s insights into ritual, dramatic ritual could also be characterized by its three traits; collective, subversive, and therapeutic. According to Turner`s explanation, ritual symbolically duplicates a collective anarchical experience of a given society in the course of passing a former social state to a new state. Through the reproduction of such anarchical, but playful state, he explains that ritual results in subverting certain negative norms in favor of fostering social progress. He concludes that through the ritual drama, the audience can be free from the normative constraints incumbent upon occupying a sequence of social statuses, enacting a multiplicity of social roles, and being acutely conscious of membership in some corporate group such as a family, lineage, clan, or nation. Being highlighted as the vanguard of a new generation in American stage since World War II, Edward Albee harshly attacks commercial plays of Broadway. He argues that what we call absurd drama is actually very much `realistic` since it attempts to unveil the true nature of our reality while most of those Broadway plays are nothing but the absurd illusions and therefore truly absurd in that they prevent us from facing reality as it really is. In order to help us unveil the true nature of our reality and face the reality, Edward Albee tries to employ some ritual elements in his plays. What is the nature of the ritual elements Albee employs in his plays? Martain Esslin argues that both drama and ritual are collective experience. He thinks historically drama and religion are very closely linked with each other in the they have a common root in religious ritual. He explains what links ritual and drama is collective experiences with the three-cornered reinforcement of feed-back from performer to audience, from audience to audience. According to him. the audience-and each individual in it-must be able to experience its own identity; ritual drama is one of the means by which a primitive as well as a highly developed society experiences this identity. He says, “And in ritual as in drama the aim is an enhanced level of consciousness, a memorable insight into the nature of existence, and a renewal of strength to face the world”(Esslin 1977, 28). Some of Albee`s social plays, especially The Zoo Story, The American Dream possess such ritualistic traits. By using theater as an instrument of social renewal, Albee attempts to reveal, attack, and remedy certain negative norms which interrupt the social progress of the contemporary American society, and eventually leads audience to face reality as it really is. These ritual traits are also present in other modern plays as well as Albee`s plays, however, are very symbolic and stylized enough to exemplify those traits. In conclusion, Albee`s plays are good examples to illustrate how drama is originated from ancient ritual and in what respects modern drama is inclined to return to ritual.

PDT for acne

이광준 ( Kwang Joon Lee ) 대한피부과학회 2023 대한피부과학회 학술발표대회집 Vol.74 No.2

총량규제를 위한 효율적 삭감계획 수립에 관한 연구

이광준 ( Kwang-joon Lee ),권영호 ( Young-ho Kwon ) 한국환경기술학회 2009 한국환경기술학회지 Vol.10 No.1

본 논문은 QUAL2E 모델을 이용하여 요천의 장래 수질을 예측하는데 그 목적이 있다. 수질예측대상 구역은 요천의 상류인 월석교에서부터 하류인 요천교까지로 하였으며, 여름과 겨울로 나누어 예측을 수행하였다. 수질측정은 BOD, T-N, T-P를 측정하였는데 예측항목은 BOD가 총량규제 1단계 목표수질이므로 BOD 만을 예측하였다. QUAL2E 모델의 보정 및 검증 결과 요천에도 적용 가능함을 알 수 있었으며, 신뢰도는 다른 하천 에 비해 조금 낮게 나타났다. 본 연구에서는 요천의 물이 남원시민의 식수로 사용되는데 적합한지를 장래 수질 예측을 통하여 알아보고 이를 뒷받침 하기위해 어떠한 조치를 취해야 하는지를 연구하였고, 요천의 수질은 장래에도 현재와 크게 다르지 않을 것으로 예측되며 수자원으로 사용하는데 문제가 없을 것으로 여겨진다. In this study, the QUAL2E model was selected to forecast the water quality of Yo-Cheon. The quality of water forecast object district did with the Yo Cheon Bridge which was the WolSeokgyo from down stream which was the upper stream of Yocheon, divided by summer and winter and carried out a forecast. The simulated target water quality constituents are biochemical oxygen demand(BOD), total nitrogen(T-N), and total phosphorus(T-P). The forecasting item measured BOD because BOD was a total pollution loads controll goal water quality A revision of a QUAL2E model and verification results Yo Cheon were able to know that application was possible and compared reliability to other river and appeared a little low. It is the best, and it can know that it is discharged Namwon sewage disposal plant process medical charge Yo Cheon in Yo Cheon B, and it is joined with SeomJinGang as the BOD measurement results in 2006 to have appeared. Water of Yo Cheon is used as Nam won-si will of the people drinking water in this study, but be devoted to recognize through a suitable future quality of water forecast to put through, and backing doing this || what kind of || studied whether must take action As for the quality of water of Yo Cheon, it is forecasted now and the which are water resource not particular in the future.

재해예방 스윙교량 구조적 거동과 재하시험에 관한 연구

이광준(Lee, Kwang Joon),김종길(Kim, Jong Gil) 대한토목학회 2016 대한토목학회 학술대회 Vol.2016 No.10