• Title/Summary/Keyword: BUILDING CONSTRUCTION

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Analysis of Construction Types Causing Secondary Defects in Apartment Buildings (공동주택의 2차 하자 유발공종 분석)

  • Huh, Yung-Chul;Ju, Jae-Hyun;Bang, Hong-Soon;Kim, Ok-Kyue
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2019.05a
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    • pp.74-75
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    • 2019
  • There are certain types of construction that produces many defects during the construction of apartment buildings. It may be due to construction errors in the type itself, but more often, it is due to defects derived from other types of construction. Thus, to reduce such secondary defects and prevent fundamental defects in particular types of construction, academic research on the types of construction causing secondary defects should be actively conducted. In addition, as claimed in this study, the industries should work harder to improve the quality of the type of construction that causes secondary defects, rather than just trying to improve the ostensible problems. If the efforts of each sector are backed up, the disputes over defect repair in apartment building construction will reduce in general, which in turn will lead to a reduction in national loss within the construction industry.

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Comparion of Korea-Japan Quality Standards for Grout Materials about PC Member assembly (PC부재 조립용 그라우트 재료 품질 기준의 한일 비교)

  • Kim, Yeon-Ho;Lee, Bum-Sik;Kim, Min-Jun;Kim, Ki-Ho;Jun, Myoung-Hoon
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2023.11a
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    • pp.127-128
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    • 2023
  • Recently, OSC (off-site construction) construction has been revitalized as a response to the decline in building quality and productivity due to lack of skilled manpower at construction sites, and PC (precast concrete) construction, a representative OSC construction, is insufficiently applied to public housing.This is the situation.In addition, in the case of general contents appearing in standard specifications, the construction standards for quality assurance remain in the 1990s and do not correspond to the current construction environment.In order to improve the quality of PC member joints, we compared and analyzed Korean and Japanese specifications to establish appropriate standards for PC construction quality control, focusing on the quality of grout used in joints.

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Research on Digital Construction Site Management Using Drone and Vision Processing Technology (드론 및 비전 프로세싱 기술을 활용한 디지털 건설현장 관리에 대한 연구)

  • Seo, Min Jo;Park, Kyung Kyu;Lee, Seung Been;Kim, Si Uk;Choi, Won Jun;Kim, Chee Kyeung
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2023.11a
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    • pp.239-240
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    • 2023
  • Construction site management involves overseeing tasks from the construction phase to the maintenance stage, and digitalization of construction sites is necessary for digital construction site management. In this study, we aim to conduct research on object recognition at construction sites using drones. Images of construction sites captured by drones are reconstructed into BIM (Building Information Modeling) models, and objects are recognized after partially rendering the models using artificial intelligence. For the photorealistic rendering of the BIM models, both traditional filtering techniques and the generative adversarial network (GAN) model were used, while the YOLO (You Only Look Once) model was employed for object recognition. This study is expected to provide insights into the research direction of digital construction site management and help assess the potential and future value of introducing artificial intelligence in the construction industry.

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A Study of Improvement Factors in the Construction Phase of the Building Project (건축프로젝트의 질 관리에 있어서 시공분야 개선요소에 관한 연구)

  • Kim, Suk-Hoi;Im, Chil-Soon
    • Journal of the Korean Society of Industry Convergence
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    • v.9 no.4
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    • pp.293-300
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    • 2006
  • Utilizing a building model design of the investigation factors and structured questionnaire, the results of an investigation concerning the improvement factors in the construction phase, as perceived by academic staffs including graduate students, designers, contractors and property management teams, are presented. Findings reveal that management commitment dominate improvement factors for building projects, although construction firms frequently mentioned the team work in design firms. Significant improvements in building projects are obtained when college programs include courses that treat the administrative aspects involved in the building project and that continuing education programs cover quality training. Eighteen predominant selection factors are identified, ranked and correlated.

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The study on salt injury and carbonation of concrete (도심지 상업 건축물의 리모델링 조사.연구)

  • 김동훈;이해진;김진호;임남기
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2001.11a
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    • pp.136-141
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    • 2001
  • If we build new building after demolition of commercial building that is located in the downtown, it will be caused a social and environmental problem as wasting of resources and generating of waste. In this study, I investigated about remodel ins, this conclusion is given below. 1. Reconstruction cost is 2.1 times, and construction period is 1.4 times as much remodeling. So remodeling has an advantage. 2. For repairing and reinforcing timeworn building, we reinforced it as using carbon fiber sheet (girder, slab) and injecting method steel plate bonding Also, we tried to maintain efficiency of new building as using epoxy to protect concrete crack. 3. In the side of waste products and cost, remodeling has much more advantage than reconstruct. But demolition used construction period much. Because it had to be reused as repairing and reinforcing. And there was no difference between remodeling cost and reconstruct cost. If we develop research with enterprise.university.laboratory to exploit material and equipment and to train specialized engineer who will has a capacity to know construct repair and reinforce, it can be attribute to prevail remodeling in new construct market.

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An Effects of Air-Assisted-Catalyst Element for Reducing Density of Formaldehyde in a New House (신축주택에서 포름알데히드 농도저감에 대한 공기 촉매제의 효과에 관한 연구)

  • Jo, Hyeon-U;Park, U-Yeol;Jo, Hun-Hui;Jo, Ho-Gyu;Gang, Gyeong-In
    • Journal of the Korea Institute of Building Construction
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    • v.4 no.3
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    • pp.161-167
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    • 2004
  • The sick house syndrome is occurred from the harmful elements that the building interior materials are given off after building construction or renovation. The appropriate methods, which is to prevent sick house syndrome from spreading have to be selected before building construction or renovation. Thus, this study is to measure the density of formaldehyde, one of the volatile organic compounds after sprinkling air-assisted-catalyst on the building interior space. As a result, the emit value of formaldehyde is measured 0.07ppm that is lower than the standard of Environmental Protection Agency and World Health Organization, 0.1ppm, and the standard of Ministry of Health, Labour, and Welfare of Japan, 0.08ppm.

Comparative Study of Strength and Weakness of System Form in High-rise Building Project (초고층빌딩 거푸집 공사의 장단점 비교에 관한 연구)

  • Park, Byung-Joo;You, Seong-Kue;Kim, Ju-Hyung;Kim, Jae-Jun
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2012.05a
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    • pp.9-10
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    • 2012
  • According to the recent trends in the construction business have been actively booming both overseas plant orders and high-rise buildings orders. In addition high-rise building projects have being promoted or is actually under construction in Korea. Frame structure review which is the most consuming period on high-rise building is essential on that project. In this study looks for the currently form system and compares to those large system used in high-rise buildings.

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Development of Side Formwork Control System for Production FCP(Free-form Concrete Panel) (비정형 콘크리트 패널 생산을 위한 측면형상 제어시스템 개발)

  • Kim, Ki-Hyuk;Jung, Kyeong-Tae;Lee, Dong-Hoon
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2019.05a
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    • pp.53-54
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    • 2019
  • Currently, the market for free-form building continues to grow, but the technology for construction of free-form building in Korea is still in need of much study. In this study, we focused on this problem and conducted basic study for development a side formwork control system to product various types of FCP. As a result of this study, it is expected that it will be able to secure competitiveness for the free-form building market, which is expected to contribute greatly to the growth of the construction industry.

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Investigation on the Service life of Disappeared Buildings in Busan (부산지역 멸실 건축물의 내구년한에 관한 실태조사연구)

  • 이재용;이수용
    • Journal of the Korean Society of Safety
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    • v.18 no.3
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    • pp.114-119
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    • 2003
  • The building needs of the community are met by the interrelated construction activities of maintaining, modernizing and replacing the existing stock of building and by the erection of additional new building. Studying the service lift of buildings and how it is determined can serve as an important measuring stick in making decisions on construction policy. Therefore, the purpose of this study is to provide useful information for future construction through a comparative and analytical study of building structures on disappeared buildings. It was found that most building structure had a shorter service life than the standard set by The Korea Appraisal Board. This situation may have occurred due to the sharp rise in replacement of older buildings with new buildings for the purpose of monetary profit. To increase the economic life of buildings reduce losses of the nation's capital henceforth, examination on policy md steady study needs to be done.

Application of Accelerated Carbonation Reaction for Low Alkalinity of Recycled Aggregate

  • Lee, Jong-Chan;Lee, Sae-Hyun;Yoon, Sang-Hyuck;Song, Tae-Hyeob
    • Journal of the Korea Institute of Building Construction
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    • v.11 no.5
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    • pp.515-522
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    • 2011
  • As Construction and Demolition (C&D) debris increases every year, systems have been adopted to compel the use of recycled aggregate made from C&D debris, and the use of recycled aggregate in the construction field has increased. But environmental problems linked to the alkalinity of recycled aggregate have occurred, and a study on approaches to lower the alkalinity of recycled aggregate is needed. It was certified by this study that a large amount of recycled aggregate could be carbonated in the C&D debris midterm-treatment field. As a result, the density and the water absorption of recycled aggregate after carbonation reaction was improved, and pH of recycled aggregate was lowered from over 11 to 9.4. X-ray Diffraction (XRD), Scanning Electron Microscope (SEM), Energy Dispersive Spectroscopy (EDS), and Thermogravimetry/Differential Thermal Analysis (TG/DTA) methods also indicated the carbonation of recycled aggregate.