• 한국건설순환자원학회논문집
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• 제11권4호
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• pp.552-559
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• 2023

본 연구는 팽창성 및 팽윤성 혼화제를 혼입한 고로슬래그 콘크리트의 균열 저감 성능 평가를 목적으로 한다. 기본 성능 실험으로 고로슬래그미분말(BFS), 칼슘설포알루미네이트(CSA), 벤토나이트, 하이드록시프로필 메틸셀룰로오스(HPMC) 등 다양한 혼입물을 사용하여 수행한 결과 벤토나이트가 HPMC에 비해 우수한 성능을 나타내었다. 이후, 혼입률에 따른 균열 및 건조수축 평가를 위해 MOCK-UP 테스트를 실시하였다. 그 결과, 벤토나이트와 소량의 인산칼슘을 첨가하였을 때 건조수축이 감소되어 균열이 저감 되었다. 특히, 30 %의 BFS, 1 %의 벤토나이트, 1 %의 인산칼슘으로 구성된 시멘트 혼합물이 균열이 없는 최적의 성능을 보였다. BFS 콘크리트가 지속적인 팽창 활동에 의하여 수축을 보상하는데 기여할 것으로 판단되며 현장 적용에 사용될 수 있을 것이다.

• 한국건축시공학회지
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• 제13권6호
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• pp.627-633
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• 2013

최근에는 생활수준 향상으로 인간친화적인 공간창조 등 의장적인 측면에서 다양한 요구가 나타나고 있다. 본 연구에서는 무주태권도원의 2개의 블랙콘크리트 교량에 기존연구에서 얻어진 카본아미노실리카블랙 고성능 감수제(CASB-SP)를 적용하기 위한 Mock up test와 현장적용사항에 대하여 보고하고자 하였다. Mock up test 결과 일반적인 품질 항목은 양호하게 나타났고, 백화방지와 관련한 발수제 도포는 에폭시계가 가장 양호한 것으로 나타나 현장적용에 활용하였다. 현장적용 결과 역시 기초적 특성은 모두 양호 하였고, 검정색 색상구현도 양호하였는데, 기존의 카본블랙 분말 색소를 이용하는 경우보다 시공성, 품질 모두 양호하면서 30 % 정도의 저렴한 경제성도 확인할 수 있었다.

• 한국정보통신학회논문지
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• 제13권5호
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• pp.845-853
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• 2009

본 논문은 정부에서 추진중인 유비쿼터스도시의 성공적 건설을 위하여 공동주택에 설치되는 홈 네트워크설비를 포함한 전기통신설비 및 방송공동수신설비의 기술기준과 초고속 정보통신건물인증제도의 문제점을 알아보고 해결방안으로 주택법령의 주택성능 등급표시 제도보완과 유지관리를 제도화 하기위한 주택법계열의 전면적인 검토 보완 및 개정안을 제시하였다. 또한 기술기준만을 적용한 건축물과 초고속 정보통신건물 인증 2등급 이하 취득 건축물 그리고 상기 해결방안이 법제도화가 되었을 때의 건축물에 대한구내 정보통신선로 통합구축 모델을 각각 설계하여 제시하였다.

• KIEAE Journal
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• 제9권2호
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• pp.91-98
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• 2009

The purpose of this study is analyzing the prescriptions of American codes for straw bale structures and proposing the legislation direction of Korean building code. The process of this study is as follows: (1) To set up the legislation direction of straw bale code of Korea, this study investigated the current state and features of straw bale houses in Korea, and looked into the worldwide status of straw bale codes and permitting. (2) To provide basic data for the legislation of Korean straw bale code or guideline, this study analyzed American codes for straw bale structures like the Tucson/Pima County Arizona Building Code Appendix Chapter 72 - Straw-Bale Structures, California State Guidelines for Straw-Bale Structures, New Mexico Standards for Non-load Bearing Baled Straw Construction, Oregon State Residential Code Appendix M - Straw-Bale Structures and so on. The analysis items are the scope of rule application, material specifications, requirements for straw bale walls/foundations and construction requirements. (3) On the base of analysis of American straw bale codes, this study proposed the legislation process and direction of Korean straw bale code and guideline.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2005년도 춘계 학술기술논문발표대회 논문집
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• pp.51-56
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• 2005

It does not find for solution by limitation of technological mechanism of existent of leakage maintenance material. So, it is paid for huge expense because continuous repeat maintenance work is consisting. Furthermore, it is indicated by big problem in construction work that is constructed by field experience that thing by definite and systematic theory is not with proper performance test and analysis up to now. Therefore, wish to measure physical performance change by various environment condition maintenance of structure and performance construction work aspect in that apply to water leakage maintenance material using of acrylic resin system water expansion, leakage maintenance material in this research, and present suitable form of construction work under these environment. also, wish to ready diversified remedy by oversea market opening.

• 한국건축시공학회지
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• 제12권4호
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• pp.401-414
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• 2012

The adoption of Green Frame is expected to provide economic benefits, since construction costs are reduced by the in-situ production of precast concrete column and beam. The cost reduction can ultimately be realized by saving transportation costs and the overhead and profit of PC plants. The cost structure of Green Frame, which is built up using composite precast concrete members, is similar to that of a bearing-wall structure, but the difference in construction process has resulted in some cost differences for a few items. In particular, production and installation is the principal work involved in Green Frame made by precast concrete members, while form and concrete work is the principal work for a bearing-wall structure. As such, the rental time and fee for a tower crane should be compared through time analysis. To verify reliability, this study focused on developed residential projects to estimate the construction costs. Through this analysis, it was found that the costs of Green Frame were 1.57% lower than the costs of bearing-wall structure. The results of this study will help in the development of a management plan for the structural work of Green Frame.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2018년도 춘계 학술논문 발표대회
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• pp.161-162
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• 2018

Many researchers in South Korea have conducted regarding the safety climate and concluded that the safety climate effect on the safety performance. However, the survey tools that were used in domestic research were developed by individuals or designed by reconstituting, translating from previous studies. In addition, the safety climate as a low factor of organizational culture showed up in different types depending on business scale. In order to solve this issue, the objective of this study is to analyze the safety climate level of construction company depending on business scale in South Korea. first, the survey is conducted by NOSACQ-50 for construction workers. Second, it is analyzed how organizational culture affected the safety climate. Finally, the improvements are suggested on the level of safety climate. In the future, this study will be used as a baseline for the effects of the safety climate on the safety performance in construction site based on business scale.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2006년도 추계 학술논문 발표대회 논문집
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• pp.133-137
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• 2006

Can examine cause that the construction industry is faced in crisis of skill exhaustion in two sides. One is the tribe of actuality production manpower by entry evasion and graying of young man class specially new manpower to the tribe of skill manpower. Another is qualitative decline of skill manpower. Generally, problem of the systematic knowledge tribe and the picking up tribe about new technology etc, exists because learn skill for shoulder beyond in spot. In cutting phenomenon of skill that is depended on personal relationships availability with skilled worker in hereafter, problem that worker who is old or enter through rain skilled worker does not learn all life skill is detected. These problems institute entry of young man class and necessity of systematic vocational education training specially new human strength strongly. This study does presentation of way to promote construction industry entry of young man class and improvement way of vocational education training system that can do to train these by function manpower by purpose.

• 한국건축시공학회지
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• 제8권5호
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• pp.67-73
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• 2008

Recent trends in construction towards larger scale and taller buildings are causing problems by ineffective existing management approach in construction industry have emerged. Delivering necessary materials and mobilizing the human resources and equipment In a timely manner to keep labor on schedule have become a critical issue to be addressed. In particular, many specialty contractors carrying out multiple projects have been experiencing difficulties mobilizing the manpower on time and in right places due to poor communication at each stage of labor supply, resulting in waste of valuable resources. Hence, it's imperative for the specialty contractors to obtain specific information on labor demand so as to set up a communication and labor management system to ensure the right human resources will be mobilized in the right place at the right time. The study therefore is aimed at developing an optimal human resources management system for specialty contractors performing multiple projects. To that end, the study is focused on rebar and concrete work. The outcome of the study is expected to help allocate the right human resources to the right place in a timely fashion, thereby achieving an effective workflow at construction sites.

• 한국BIM학회 논문집
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• 제8권4호
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• pp.41-48
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• 2018

Recent technological improvements have made abundant changes in construction industry. In specific, some technical applications, such as Building Information Modeling (BIM) opens up many possibilities. Some studies have articulated the use of BIM and its advantages in construction, but most of them are theoretical, not practical. This study is to provide an insight to such obstacles in BIM research. By investigating a real project that could utilize BIM in planning and construction phases, the authors try to investigate a possible outline of advantages in BIM implementation. The study area was set to a railway construction site in South Korea. The site covers a multiple railway tracks, stations, telecommunication facilities, infrastructure facilities, railway structures, and so numerous. In the site, the authors have identified 12 errors in 7 projects that could be prevented if BIM was utilized before the construction.