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다량의 산업부산물을 활용한 슬러리계 되메움 재료의 물성 및 현장적용 가능성 평가
료효개 ( Liao Xiaokai ),허재원 ( Her Jae-won ),김동훈 ( Kim Dong-hun ),임남기 ( Lim Nam-gi ) 한국건축시공학회 2020 한국건축시공학회 학술발표대회 논문집 Vol.20 No.2
This study has resulted in the following findings. First, Using more than 30% of GBFS to replace FA enabled bleeding control through improved fluidity. Moreover, it has been confirmed that effective strength and proper quality can be achieved when it was applied as a backfilling material with higher early strength than the base material. Second, When using more than 30% of FNS to replace sand, it was found that adding 0.3∼0.35 of the AE agent is effective for bleeding control through improved fluidity. Third, When using more than 30% of both GBFS and FNS in combination, it was found that adding 0.3∼0.35 of the AE agent is effective for bleeding control through improved fluidity. Also, it was confirmed that proper mixing of 15∼60% of GF secured the effective strength and desired quality as a refiller and joint filler material.
액상규산칼륨으로 표면처리한 고성능 콘크리트 구조용 굵은 순환골재 개발
박용진(Park Yong-Jin),허재원(Her Jae-Won),임남기(Lim Nam-Gi) 대한건축학회 2010 大韓建築學會論文集 : 構造系 Vol.26 No.7
Economical development has triggered the enforcement of a large scale of national land development, road construction & housing construction projects causing a rapid increase in aggregate amount used. And now national land environment is being destroyed by the rubble & rubble sand collection as the river sand, river gravels and even sea sand are being exhausted. Like this, the amount of aggregates demanded is increasing every day causing extreme shortage of supply of them, and so the use of recycled aggregates from grinded construction waste, that is, waste concrete seems to be indispensable to balance the demand and supply of the aggregates. Therefore, a use amount of recycled aggregates would be enlarged gradually, but due to the lack of understanding of recycled aggregates and lack of multiple studies on recycled aggregates-used concrete, most of them are used for non structural use such as for embankment or as the molding, subgrade materials for road construction. So, a production plan for recycled aggregates needs to be made first under the consideration of their weak properties that is their weakness in intensity, and high water absorbtion rate affected by cement pate on the aggregate surface need to be complemented in the way of elevating their quality. Accordingly, this researcher will prepare in this study a base on which recycled aggregates would be useful by processing the breaks and cracks on their surface with potassium silicate for the purpose of lifting their quality which are inferior to that of natural aggregates.
박철우 ( Park Cheul Woo ),허재원 ( Her Jae-won ),신상엽 ( Shin Sang-yeop ),정의창 ( Jeong Euy-chang ),임남기 ( Lim Nam Gi ) 한국구조물진단유지관리공학회 2018 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.22 No.2
Experimental results show that the maximum temperature of the floorboard surface is 1/2 level compared to the hot water temperature of 80℃, which is circulated by hot water heating. And the part above 10mm above the surface of the floorboard was low as 1/3 level. Therefore, in order to improve the heating efficiency of the room where the flooring is applied to the hot water heating, the thermal conductivity of the flooring material should be improved as well.
중국진출 중견중소기업과 범한상 물류기업 간 연계모델 구축 연구
이헌수 ( Hun Soo Lee ),최동현 ( Dong Hyun Choi ),허재원 ( Jae Won Her ),김현경 ( Hyun Kyung Kim ) 한국로지스틱스학회 2016 로지스틱스연구 Vol.24 No.1
본 연구에서는 우리 중견·중소 화주기업들의 중국진출 및 공급망 현황과 물동량 흐름 등에 대한 실증분석을 위해, 121개 업체에 대해 방문, 전화 등을 통한 심층조사를 실시하였다. 주요 조사내용은 중국 진출현황, 각 물류 단계별 현황, 물동량 규모 및 흐름 등을 포함하고 있다. 또한 화주기업과 범한상 물류기업 간의 연계모델 도출을 위해, 중국소재 11개 범한상 물류기업에 대한 방문조사가 이루어졌다. 이러한 분석을 기반으로, 중국내 주요 지역별, 품목별, 공급망별 유형화, 중소기업 중국물류 단계별 분석, 중소 화주기업과 범한상 물류기업 간의 연계 모델 도출이 이루어졌다. This research studies various aspects of supply chain of Korean SMEs in China market including material and product flow between SCM processes through interview survey on 121 manufacturing and retail firms and analyzed services and networks of 11 pan-Korean logistics firms in China. Based on such studies, this research attempts to suggest alliance models between SMEs and pan-Korean logistics firms in China market..