• 한국공간구조학회논문집
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• 제19권4호
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• pp.85-94
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• 2019

Then 3D printing is used practically at construction sites, there is a serious lack of studies on the conflict with construction-related laws and expected operational problems. Accordingly, the purpose of this study is to present obstacles and directions for improvement in construction-related laws (Building Act, Construction Technology Promotion Act, Housing Act, Construction Machinery Management Act, etc.) for practical operation of 3D printing. The important results are as follows. Amending existing construction-related laws for 3D printing is irrational and inefficient in terms of structure and material. This study proposed a method of satisfying performance required by laws or standards based on the performance design method presented in existing laws and systems through structure and material performance certification procedure. In addition, inclusion of 3D printing equipment in the Construction Machinery Management Act results in various restrictions such as equipment inspection and certification of machine parts. As such restrictions can block vitalization of 3D printing, a long-term and step-wise approach was suggested.

• 한국안전학회지
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• 제20권4호
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• pp.97-105
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• 2005

As construction project is becoming larger, construction progress and works are more various and complex according to recent Korean construction tendency. The growth of construction induces much pollution on the progress of construction and the problems due to the construction pollution are raised into social problem strongly, because it is increasing the need on the quality of lift and the desire of clean environment. This study aimed to seek far the effective solving plan of the construction popular complaints by surveying the real condition of construction popular complaints and analyzing the cause and tansaction period of popular complaints. For this study, the laws related and popular complaints were analysed focusing on the documents in low district offices of Gwangju from 2000 to 2004. As a result, the types of construction popular complaints were divided into 17 and the causes were as follows in order: crack and subsidence of ground(14.90%), infringement of private life(11.55%), noise(10.80%), infringement of a right to sunshine(10.07%) and breakdown(6.7%). Consequently, it is considered that these complaints are occurred by physical and environmental causes.

• 한국건설순환자원학회논문집
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• 제2권2호
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• pp.83-92
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• 2006

Recently, interest grew recently on the quality of aggregates following the diminution of primary resources from river and the growing construction demand which exhausted high-quality sand sources around large cities and incited the use of low grade aggregates like shore sand and sea sand that can be supplied in natural state. Especially, the environmental preservation concern and the augmentation of public grievance about the exploitation of sea sand as substitute to river sand are gradually impeding the supply. This situation aggravated by the recent interdiction to extract sea sand which resulted in sand crisis that even led once to the suspension of construction works. The lack of sea sand and river sand increased the exploitation of crushed sand which occupies now nearly 20% of the whole quantity of fine aggregates. And, the use of crushed sand may be expected to grow continuously in the future. This paper described that the properties of crushed sand and the concrete using the crushed sand, the technologies to improve quality of crushed sand and the concrete in order to provide information for the production of high-quality concrete using crushed sand.

• 한국건축시공학회지
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• 제14권1호
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• pp.11-20
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• 2014

This research examined the effect of the quality of aggregate on concrete workability and compressive strength through an investigation into regional aggregate used in domestic ready mixed concrete plants. Through the research, it was found that aggregate for ready mixed concrete shows poor quality overall. The main factor of deterioration in the quality of the concrete is the particle size of fine aggregate and fine particle content in coarse aggregate. The quality of aggregate significantly influences concrete's workability, which is defined based on 0.08mm passage related with powder and absorption. In addition, poor aggregate quality leads to increased water content in concrete to secure workability, which is related with a decline in the compressive strength and durability of concrete.

• 한국건설관리학회논문집
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• 제1권1호
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• pp.72-79
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• 2000

건설프로젝트에서 설계품질은 전반적인 프로젝트 목표를 달성하기 위하여 고려하여야 할 중요한 요소이다. 건설프로젝트의 품질확보를 위해서는 설계단계에서부터 관리기준에 따른 지속적인 품질관리활동이 필요하며 이는 장기적 관점에서 볼 때, PDCA 싸이클에 따라 피드백 되어야 한다. 본 연구는 설계품질을 객관적인 기준에 의하여 정량적으로 평가할 수 있고, 품질정보의 효율적인 피드백이 가능한 설계품질 평가모델을 제시하는데 그 목적이 있다. 본 연구에서는 설계품질과 설계변경의 연관성에 착안하여 설계의 결과물인 설계도면과 시방서 변경사항을 시공단계에서의 하자와 같은 개념으로 파악하고, 객관적인 설계변경정보를 이용하여 품질을 정량적으로 평가할 수 는 설계품질지수 산정방법을 제안하였다. 또한 설계품질관리 항목에 있어서 국제 품질규격인 ISO 시리즈를 적용함으로써 해외 수주 의존도가 높은 국내의 현실을 반영하였다.

• 한국건설관리학회논문집
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• 제24권6호
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• pp.63-65
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• 2023

BIM 및 AR 기술은 실제 구조물에 3D 모델 및 정보를 투영하여 현장 내 필요 데이터에 손쉽게 접근할 수 있게 한다는 점에서 건설 산업의 생산성을 증진시킬 수 있을 것으로 평가되어왔다. 그러나 건설 품질관리 업무 내 AR 기술을 적용하기 위한 선행 연구는 대부분 건설 프로젝트 전반을 대상으로 수행되어 총괄적 현장관리 방안에 불과하며, 철근과 같은 부재 단위의 품질관리 내 AR을 적용한 일부 연구 사례 또한 단순 투영에만 집중되어 구체적인 품질점검이 불가한 것으로 확인되었다. 이에 본 연구에서는 철근 부재에 특화된 실무 적용 가능 수준의 BIM 기반 AR 품질관리 시스템 개발을 최종 목적으로 하였다. 본 시스템 개발을 위해 철도 건설 현장에서 활용하는 품질점검 리스트의 철근 점검 항목을 분석하고, 이들을 효과적으로 대응할 수 있는 AR 요소기술 4가지를 개발 및 탑재하였다. 실제 철도 교량 구조물을 대상으로 개발된 시스템을 검증하였으며, 그 결과 투영 안정성 저하 문제가 도출되었다. 이는 모델 경량화(simplification) 및 AR 기기 하드웨어 성능 향상을 통해 해결하였으며, 최종적으로 시스템이 정상적으로 구동되는 것을 확인하였다. 이후 현장 품질 전문가를 대상으로 개발된 철근 품질점검 시스템의 실무 적용성 평가를 실시하였으며, 현행 철근 점검 방식 대비 AR 시스템 활용 시 점검 효율성이 증가할 것으로 평가되었다.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 1992년도 가을 학술발표회 논문집
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• pp.70-75
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• 1992

As new city apartment construction of five brought about the short of the domestic output rocal construction materials , therefore the construction materials have been in part imported from foreign, here it is important that it is ensured the warranty of the quality for the construction materials lacking K.S. mark. Therefore in this research, we are trying to grasp the degree of strength of the concrete made as the cement from china and the intensity power of the estimate for the quality of construction materials and the guide in making a construction.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2003년도 학술.기술논문 발표회
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• pp.17-21
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• 2003

This study is mainly acceptive for physical material performance than waterproofing layer performance on the external condition after construction. The reason are legalized only for material performance quality standard even though it is existed waterproofing materials for membrane. In actuality, waterproofing layer are greatly occurred in performance a decreased developing essential element that are human footprints as a result physical perimeter environment after construction and on the construction. As the result, this present paper purpose for evaluation and performance of the membrane waterproofing layer on the construction.

• 한국실내디자인학회논문집
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• 제9호
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• pp.10-17
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• 1996

With the ever-increasing important of high-speed information in society as we move towards the 21 st century. Interior design and it's working condition has been changed a great deal included a sort of each special character and make a difference against the others. It used to be find a great poles asunder of worker's safety and project quality according to the environmental dimension of interior construction field as if they should be a pleasantness or poor condition. This research aimed to improvement of environmental construction field of interior with construction engineers and particular interior labors in 4 phases as : ⅠThe preparatory phase : -Secure a Budget, Environmental safety supervisor -Fix of Design quality, Construction period. -Choice of Construction method, Sub constructing Ⅱ. Starting work phase ; -Capacity , Safety of temporary power line. -Carriage, Stock of Material -Safety of Electronic tools, -Personal protector. Ⅲ. Working period ; -Ventilation, I illumination of working place. -Measurement of environmental working condition Ⅳ.Finish working phase ; -Analysis of measurement data. -Evaluation and making up for the weak point. -Keeping data.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2018년도 추계 학술논문 발표대회
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• pp.130-131
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• 2018

The main purpose of this study is to analyze the importance of the construction work of apartment buildings. The construction work operation was divided into five major tasks, which include: Schedule Control (P'1 - P5) Construction Management (C'1 - C'5), Environmental Management (E'1 - E'3), and Quality Management. Finally, this study derived major construction execution tasks through correlation between construction work and the original index and t-test.