• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 1992년도 봄 학술발표회 논문집
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• pp.23-28
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• 1992

In recent years, due to the construction boom the demand of cement is increasing suddenly and the use of imported cement is inevitable. But, because the quality of imported cement varies quite a lot, many problems have been encountered in construction fields. These problems include hardening retardation, lower early strength and crack of concrete. The object of this study is to explain causes for hardening retardation from a construction field case and propose a solution

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2008년도 추계 학술발표회
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• pp.1038-1049
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• 2008

The purpose of this case study is corrosive fall in Upper-Slope. Upper-slope of this slope affect in fall of the cut-slope because of wide valley. Deposit which is piled up naturally is the sinkage occurs gradually in upper-slope.

• 한국건설순환자원학회지
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• 제6권1호
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• pp.11-16
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• 2011

• 건설관리
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• 제6권5호
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• pp.33-38
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• 2005

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2013년도 추계 학술논문 발표대회
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• pp.208-209
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• 2013

In recent times, the legal management of construction enterprise has become one of important theme in the domestic construction industry. Therefore, the objective of this paper is to consider rational methodology of legal management of construction enterprise. To achieve this objective, this paper performs a case study about the major cause and significant characteristic of the legal management. In conclusion, the following factors are systematized : 1) actual condition of legal management of construction enterprise in korea, 2) the influence and extended suggestions of legal management.

• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2004년도 제5회 정기학술발표대회 논문집
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• pp.153-159
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• 2004

산업의 경쟁력 요소로서 지식의 중요성은 정보기술의 발전과 함께 나날이 커가고 있으며 이에 따라 제시된 기업경영 기법이 지식경영이다. 건설업의 경우도 다양하고 광범위한 지식이 요구되는 산업 특성으로 인하여 지식경영의 중요성은 커지고 있으며, 이에 따라 많은 건설업체가 지식경영을 도입, 추진하고 있다. 본 논문에서는 이러한 건설업체 도입 및 추진사례 중 삼성건설의 "1) 자료형 지식자산과 인적 지식자산으로의 지식규정", "2) 공사 프로세스와의 결합을 통한 지식경영 조직접목", "3) 지식경영에 있어서의 정보화의 역할과 기여" 3가지 추진 사례를 중심으로, 실제 조직에의 적용時 문제점, 해결방안 및 그 결과를 제시함으로써, 건설업에서의 지식경영 발전과 이를 통한 지식산업으로서의 건설업 발전방항을 모색해 보는 기회를 제시해 보고자 한다.

• 국제학술발표논문집
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• The 2th International Conference on Construction Engineering and Project Management
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• pp.96-105
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• 2007

This paper presents a study on the impact of variation of construction material prices on the feasibility of building projects in Vietnam. The paper makes use of Monte-Carlo simulation for financial risk analysis of net present Value (NPV) and internal rate of return (IRR). To well illustrate the influencing, a case study is presented. The research results show that there is a strong correlation between steel prices, gold prices, and $US exchange rate. Outputs of statistics also reveal that the concurrent variation of prices of cement, steel, sand, brick, formwork and stone has strongly negative impact on NPV and IRR of building projects. The results also indicate that the proportion of steel cost to total construction cost is 17.95% which is the cause of risks for the feasibility of building project in Vietnam. The paper stresses that feasibility study of building project must integrate the impact of construction materials prices in order to mitigate risks in developing countries as Vietnam.

• 국제학술발표논문집
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• The 6th International Conference on Construction Engineering and Project Management
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• pp.132-137
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• 2015

A modular construction method includes factory-prefabricated room-sized volumetric units. Although low-rise buildings have been constructed worldwide using this method for more than 30 years, it is a relatively new technology in high-rise construction. There are three basic methods of constructing high-rise buildings using modular construction: the core method, the core-and-podium combination method, and the modular in-fill method. While the first two have been used in the USA and in several European countries, the third method, introduced in 2011 by an international cruise ship development firm, is a rather new approach for which there are few case histories. Therefore, its applicability and construction feasibility should be verified. As a pilot study to test the applicability of the modular in-fill method, a 12-story residential building was built in Korea. This paper describes a case study of the pilot project. The advantages and disadvantages of the method and its applicability in terms of cost effectiveness and construction schedule management were evaluated.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2009년도 춘계 학술발표회
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• pp.308-319
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• 2009

In the case of relatively good ground and construction condition in the deep excavation for the construction of subway, railway, building etc., flexible earth retaining systems are often used in an economical point of view. It is generally known that the mechanism of behavior in the flexible earth retaining system is relatively more complicated than the rigid earth retaining system. Moreover in the case of long span strut supporting system the analysis of strut axial force change becomes more difficult when the differences of ground condition and excavation work progress on both sides of excavation section are added. When deeper excavation than the specification or installation delay of supporting system is done or change of ground condition is faced due to the construction conditions during construction process, lots of axial force can be induced in some struts and that can threaten the safety of construction. This paper introduces two examples of long span deep excavation where struts and rock bolts were used as a supporting system with flexible wall structure. And the sections of two examples are 50 meters apart in one construction site, they have almost similar design and construction conditions. The characteristics of ground deformation and strut axial force change were analysed, the similarity and difference between measurement results of tow examples were compared and investigated. The effort of this article aims to improve and develop the technique of design and construction in the coming projects having similar ground condition and supporting method.

• 한국건축시공학회지
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• 제3권3호
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• pp.113-120
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• 2003

The purpose of this thesis is to provide an appropriate trade-off information for the conflicting interests caused by the various factors between building owner and contractor during selecting the contractor and performing the construction work, in which the construction was contracted by open bidding from the government or private organizations. In order to propose the legitimate evidence, the differences between the domestic contract sheet of drawing change and the process of drawing change and those of the foreign countries were compared and analysed. The number of construction ordered in Youngdong area in 2001 whose construction expenses are more than 100,000,000 won is 218 items and 147,005,000,000 won in total cost. Among them, the number of 218 items whose total cost amounts to 16,705,000,000 (11.36%) is in case of increase of construction expenses due to the drawing changes, and the number of 48 items whose total cost amounts to 2,009,000,000 won (1.37%) is the case of decrease. In conclusions, the contractor could have more benefits than the building owner in case they submit the detailed estimate sheet without eliminating the increasing expenses of construction. It is shown that the building owner's loss is increasing whenever the labor cost is higher than material cost. Therefore, this thesis proposes a proper standards for the harmonious compromise between the contractor and the building owner for the problems caused by the drawing changes when the contract agreement is occurred.