• 한국대기환경학회지
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• 제25권3호
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• pp.188-195
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• 2009

Generally. mobile sources of air pollution were classified in on-road and non-road. Due to increased registration number of construction equipment in Korea. updated emission factors for non-road mobile sources, such as construction machinery. should be developed. NONROAD model of U.S. EPA already has introduced transient adjustment factors and sulfur adjustment factors for emission factors of diesel powered engine. In addition to this. European Environment Agency (EEA) has proposed emission factors for off-road machinery including several types of construction equipment. In this study. six types of construction equipment, such as excavator. forklift, loader, crane, roller and bulldozer, were studied to estimate emission factors based on total registration status in Korea. Total 445 construction equipments between 2004 and 2007 model year were tested with KC1-8 mode and air pollutants (CO, THC, $NO_x$, and PM) were measured. After statistical estimation and calculation, emission factors for CO, THC, $NO_x$, and PM for excavator, forklift, loader, crane, roller and bulldozer were provided and compared with previous emission factors. Moreover, updated emission factors for six types of construction equipment in this study were verified after comparison with emission factors of U.S. EPA. Finally, estimated emission amounts of four air pollutants were suggested according to six types of construction equipment.

• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2004년도 제5회 정기학술발표대회 논문집
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• pp.20-25
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• 2004

2003년 7월 18일 인칠공항공사는 동북아의 중추공항(Hub-Airport)건설을 목표로 단계적으로 추진되는 인천국제공항 2단계건석사업에 필요한 전문적인 사업관리 기술을 지원 받기 위하여 KIDS 컨소시엄(건원, ITM, 도화, 공간으로 구성된 컨소시엄)과 2단계 건설사업관리 기술지원용역계약을 체결하였다. 2단계 건설사업은 250만 평의 부지조성, 제3활주로, 계류장,원격탑승동, 무인자동열차, 고속수하물처리시설, 화물터미널. 등과 필요한 시설물을 2008년 말까지 완료하는 것으로 계획되어 있으며 CM계약자는 기 구축된 공항공사의 각종 사업관리 Tool을 이용하여 공정관리를 포함한 종합사업관리, 건축/전럭시설의 설계감리. IAT/BHS 등의 설계관리. 품질 및 시운전관리 등의 업무에 국내외 전문인력을 공항공사의 사업관리 조직에 투입하여 공사직원들과 함께 사업목표 달성을 위해 매진하고 있다. 본 고에서는 인천공항공사에서 수행하고 있는 건설사업관리사례를 주요업무 중심으로 소개해 보고자 한다.

• 한국건설관리학회논문집
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• 제17권1호
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• pp.110-118
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• 2016

최근 국내 건설 산업은 높은 경제성장률과 신기술 도입 등으로 인하여 대형화, 초고층화, 첨단화가 되어가고 있으며, 건설 품질에 대한 사용자의 관심과 요구 수준은 더욱 높아지고 있다. 이는 과거의 양적인 성장위주에서 벗어나 시장변화에 능동적으로 대처할 수 있는 한층 더 체계적이고 수준 높은 품질관리의 필요성이 요구된다고 할 수 있다. 정부는 이러한 시대적 요구사항을 반영하여 건설공사의 시공 및 사용재료에 대한 적정성 여부와 부실시공 방지 등 품질확보를 위한 점검을 강화하고 있다. 그러나 이와 같은 점검 강화에도 불구하고 품질관리에 대한 인식 부족 및 형식적인 품질관리 운영 등으로 인하여 많은 문제점이 발생되고 있으며, 품질관리 점검 시 반복적이고 지속적으로 지적사항이 발생되고 있다. 따라서 본 연구에서는 반복적인 지적사항을 줄이고, 부적절한 품질관리와 부실시공을 방지하기 위해 서울시 품질시험소에서 2012년 3월부터 2014년 10월까지 393개 건설현장의 품질관리 적정성 확인 점검을 통해 도출한 지적사항 3,443건을 심층 분석하여 실효성 있는 현장 품질관리 개선방안을 제시하고자 한다. 본 연구에서 제안한 현장 품질관리의 개선방안을 통해 부적절한 품질관리와 부실시공의 방지, 반복적이고 지속적으로 나타나는 지적사항의 감소, 현장의 품질관리 업무향상과 같은 개선효과가 있을 것으로 기대된다.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2011년도 춘계 학술논문 발표대회 1부
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• pp.167-169
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• 2011

Construction Automation as a way to solve the problems of lack of skilled labor by decrease in construction population productivity and quality decrease. We are on the way to develop a construction automation system adequate for domestic circumstances in Korea; it is called RCA(Robotic-crane based Construction Automation) system. Climbing hydraulic robot system is a part of RCA system and makes Construction Factory(CF) climb next floor. The controller can control movement needs to be developed for CF safety. Synchronous control the actual field was applied to the controller logic and synchronous control of the process through which the safety has been verified. The purpose of this study that control of climbing hydraulic robot system behavior on real-time, and to improve safety for overall construction automation system through synchronous motion controller.

• 국제학술발표논문집
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• The 3th International Conference on Construction Engineering and Project Management
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• pp.794-799
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• 2009

The temperature control of in-place concrete is the most important factor for an early age of curing concrete. Heat stress of mass concrete caused by the heat of hydration can induce the crack of concrete, and a frost damage from cold weather casting concrete results defect on compressive strength and degradation of durability. Therefore, success and failure of concrete work is dependant on the measurement and control of concrete temperature. In addition, the compressive strength assessment of in-place concrete obtained from the maturity calculated from the history of temperature make a reduction of construction cycle time, possible. For that purpose, wireless temperature measuring system was developed to control temperature and assess strength of concrete. And, it was possible to monitor the temperature of concrete over 1km apart from site office and to take a proper measure; mesh-type network was developed for wireless sensor. Furthermore, curing control system that contains the program capable to calculate the maturity of concrete from the history of temperature and to assess the compressive strength of concrete was established. In this study, organization and practical method of developed curing control system are presented; base on in-place application case.

• Architectural research
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• 제9권1호
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• pp.47-52
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• 2007

The purpose of this research is to evaluate the feasibility of outsourcing test/inspection activity in construction work. This research conducted a questionnaire of interested parties as well as a survey by Analytic Hierarchy Process (AHP) with experts on quality control. For the evaluation by AHP, five criteria were adopted and a number of pair-wise comparisons were conducted through two stages. Finally, the weighting coefficient to approve the outsourcing was calculated at 0.606 and it therefore appeared more reasonable to permit rather than prohibit outsourcing. According to the AHP result, it was found that outsourcing would be necessary to enhance the objectivity and specialties of quality testing and inspection, even though somewhat undesirable in terms of enhancing a sense of responsibility and systemically conducting the testing and inspection.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2012년도 추계 학술논문 발표대회
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• pp.261-262
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• 2012

The field application through the quality control of self adhesive rubberized asphalt waterproofing sheet was regulated by KS F 4934 of Korea Standard in 2003. However, regulations that different material properties of self-Adhesive waterproofing sheets are difficult on the standard. Therefore, this research was performed for of quality control all affiliations of self-adhesive waterproofing sheet through basic properties test and proposed quality standard revised bill in KS F 4934.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2021년도 봄 학술논문 발표대회
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• pp.327-328
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• 2021

In the manufacturing process of ready-mixed concrete, quantity management directly affects the workability and strength of concrete. Therefore, water quantity is the most important management factor for water quality control of ready-mixed concrete. It can be said that the number of unit water in the mix design, the water quantity due to the surface water contained in the aggregate used, and the water quantity taking into account the concentration of sludge contained in the recycling water when using the recycling water are factors that affect the quantity management of ready-mixed concrete. In this study, as a stable quality control method of ready-mixed concrete, a quantity management method by aggregate surface water and a sludge concentration management method according to the use of recycling water were proposed. Thus, we tried to suggest an efficient quantity management method for stabilizing the quality of ready-mixed concrete.

• 한국건설관리학회논문집
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• 제12권3호
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• pp.101-111
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• 2011

건설기술관리법에 의하여 발주자는 수급자에게 품질관리비용을 계상하여야 한다. 품질관리비용은 건설현장에서의 수급자가 품질확보를 위하여 수행하는 품질관리활동에 소요되는 비용을 말하며, 안전관리비, 환경보전비와 같이 별도의 항목으로 계상하도록 정하고 있다. 그러나 품질확보를 위한 업무는 수급자의 의무사항이며, 공사비에는 품질관리비용이 이미 포함되어 있으므로 중복 계상할 수 없다는 발주자의 입장과 품질시험관리인의 인건비는 간접노무비에 포함되어 있다는 회계예규의 조항 등으로 인하여 품질관리비용이 아직 현실화되지 못하고 있다. 과거 수차례에 걸쳐 조사한 결과에 의하면 총공사비의 약 0.2%가 품질관리비용으로 계상되고 있는 바, 이 비용 규모는 현실적이지 못하다는 수급자의 주장을 고려하여 품질관리비용의 정의 및 내용에 대하여 관련자료를 토대로 고찰하고 품질관리비용 현실화와 관련된 제반 문제점을 제시함으로써 품질관리비용 현실화의 토대를 제공하고자 한다.

• 국제초고층학회논문집
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• 제11권3호
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• pp.181-187
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• 2022

POSCO E&C has completed Parc.1 project successfully. The construction period was 42months, and 1.5 million workers were participated till completion. To meet schedule management and quality control, POSCO E&C has adopted a lot of technologies such as GPS measurement, 3D scanning, vibration control, stack effect control, column shortening control, etc