• Proceedings of the Korean Institute of Building Construction Conference
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• 2019.11a
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• pp.229-230
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• 2019

Integrated water-soluble film is dissolved in the rubber asphalt waterproof sheet to secure adhesive strength on freshly cast concrete on the adhesion side of waterproofing layer on the floor slab. In addition, in order to determine whether the water in the concrete slurry can dissolve the water-soluble film sufficiently, the adhesive strength of the waterproofing sheet was compared between difference wetness condition at the upper part of the concrete specimen before the concrete casting.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2019.11a
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• pp.231-232
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• 2019

In this study, primers were prepared by mixing cement and modified polymer, and the adhesion to the substrate surface was enhanced by using cement which is the same material as the basement outer wall. The improved primer is used to verify the adhesion performance of the substrate in wet concrete environments.

• Proceedings of the Korea Water Resources Association Conference
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• 2015.05a
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• pp.368-368
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• 2015

본 연구에서는 식생이 활착된 식생매트 제품의 유속 저항 성능을 평가하기 위하여 식생매트의 설치 및 식생의 활착이 가능한 이동식 bed를 개발하고, 개발된 이동식 bed에서 식생매트 설치 및 식생의 활착을 완료한 후, 이동식 bed를 폭 11m 규모의 수로에 설치하여 실규모의 수리 실험을 수행하였다. 실험을 위하여 미국의 식생매트 제품의 시험방법인 ASTM D 6460을 참고하였다. 실험에 사용된 식생매트는 국내에서 통상적으로 사용되는 야자섬유 매트를 사용하였으며, 식생매트의 식생은 토심이 얕은 이동식 bed의 생육환경에서도 뿌리가 잘 발달할 수 있는 수크령을 선택하여 활착시켜 사용하였다. 실험은 봄 활착 및 가을 활착 두 가지 조건에 대하여 수행하였으며, 두 실험 조건의 결과 비교를 통하여 식생매트의 계절에 따른 식생활착 특성과 유속저항 성능 차이를 확인하였다.

• Land and Housing Review
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• v.14 no.1
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• pp.115-122
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• 2023

Modular construction is popular as a smart building system because it can shorten the construction period. This study proposed a precast concrete (PC) core system that can further shorten modular construction time. The system was developed and its structural performance was verified through computational analysis. The proposed PC core system is a complete PC construction method using dry bonding. The results of the study indicated that the proposed PC core system has structural stability and performance suitable for modular housing.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2021.05a
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• pp.21-22
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• 2021

Domestic residential buidling grading is currently comprised of 5 fields; sound-proofing, structure, ambient condition, living environment and fire-proofing. However, factors the take up most of the civil complaints are related to leakage, and waterproofing is not listed as part of the grading system. In particular, the Ministry of Land and Transport claims that the most crucial problems are leakage related in residential structures. Therefore, this study proposes to provide such grading system for waterproofing by AHP methodology based on waterproofing application locations in residential structures.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2021.05a
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• pp.185-186
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• 2021

In Korea, many buildings are built with underground spaces and cast-in-place pile method is mostly applied in the temporary retaining walls for the underground space construction. A H-shaped steel section is generally embedded in the soldier pile in the C.I.P method. In this study, a new and economical section with high strength steel replacing the H-shaped section was proposed and its flexural capacity was evaluated experimentally. The new section is the concrete-filled composite section with pentagonal thin plate and thick flange plate. Test results showed that the proposed section has an excellent flexural strength and ductility.

• Journal of the Korean Recycled Construction Resources Institute
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• v.11 no.3
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• pp.202-209
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• 2023

In this study, microstructures and mechanical properties of repair materials using calcium sulfoaluminate (CSA) and/or amorphous calcium aluminate (ACA) cements were experimentally investigated. By XRD ansysis, the hydrates formed in repair materials were identified. In addition, the microstructures of repair materials were visually examined through SEM observation. Setting time of mortars made with repair materials were measured. The strength development and ultrasonic velocity of the mortars were also evaluated at the predetermined ages. As a result, it seems that ACA showed a benefit effect with respect to mechanical properties of mortars.

• Korean Journal of Construction Engineering and Management
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• v.15 no.4
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• pp.77-85
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• 2014

A construction temporary work is main process and importance trade section. It has many works and facilities such as temporary transfer equipments which tower crane, and lift, and architectural temporary facilities which temporary office, temporary warehouse, and site test laboratory, and construction temporary equipments which scaffoldings, work plates, construction supports, and forms to set and to use in under construction and to remove in the end. A technology system of construction temporary has very low availability of field works and needs improvements in Korea as construction site has a quick response about new requirements. This study is organized existing technology systems and new technologies for field works, and developed breakdown structure of construction temporary technologies to be a basic of temporary technologies as review with site managers. For this, it will improve to be a knowledge and information system as a research of a performance and an availability about a construction temporary technology index.

• Journal of the Korean Society for Railway
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• v.5 no.2
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• pp.34-40
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• 2002

21세기 무한경쟁시대에 대비하여 국가산업의 경쟁력제고는 물론 지역의 균형발전에 기여코자 추진되고 있는 단군이래 최대 국책사업인 경부고속철도 건설사업은 오는 2004년 개통을 목표로 활기차게 추진되고 있다. 한국고속철도건설공단은 '94.6.14 프랑스 알스톰사(한국 TGV 컨소시움)와 체결한 경부고속철도차량 계약목표를 우수하고 완벽한 성능의 고속열차 도입과 함께 선진기술을 이전받아 국내 철도 기술수준을 향상시켜 고속 철도 기술 선진국으로의 도약에 그 초점을 맞추었다. (중략)

• 월간 기계설비
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• s.248
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• pp.40-53
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• 2011

한국토지주택공사(LH)가 지난해 11월 서울시 강남구 자곡동 보금자리지구에 개관한 'The Green'관은 주택의 에너지 성능 검증 및 발전 등을 위해 에너지절약, 친환경, 재활용, 공간가변 등 총 60여가지의 신기술을 전시 체험할 수 있도록 해 주목받았다. 분야별로는 에너지제로 관련 33가지, 친환경 재활용 7가지, 공간가변 9가지, 그린IT 12가지 등이다. 본지는 The Green관의 전시 개요 및 기술들에 대해 간략히 소개한다.