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촉매물질을 이용한 수처리 기법의 결정화 화울링의 저감에 관한 연구
김선도(Sun Do Kim),박복춘(Bock Choon Pak),백병준(Byung Joon Baek),김철생(Cheol Sang Kim) 대한기계학회 2004 대한기계학회 춘추학술대회 Vol.2004 No.4
The present experimental study aimed to investigate the feasibility of physical water treatment (PWT) devices using catalytic materials to mitigation of crystalization fouling. Two PWT devices having different shape and material were used. The results from microscopic observation and SEM photographs demonstrate that the crystal structure of CaCO₃ is Argonite type without water treatment while Calcite type with water treatment, which clearly shows the feasibility of PWT techinque using catalytic materials to mitigate crystalization fouling. For 500 ppm solution, the fouling resistance decreased up to about 23% due to physical water treatment using catalytic materials. The results also reveal that if two more techniques are used simultaneously the additional effects could be expected.
에어분사구 설치에 따른 폴리우레아 도막 방수·방식재의 비산 발생 저감에 관한 연구
김선도 ( Kim Sun-do ),박완구 ( Park Wan-goo ),박진상 ( Park Jin-sang ),조일규 ( Cho Il-kyu ),김병일 ( Kim Byoung-il ),오상근 ( Oh Sang-keun ) 한국건축시공학회 2017 한국건축시공학회 학술발표대회 논문집 Vol.17 No.1
This nozzle has an air flow generation mechanism in the air groove of the attachment cell part located at the end of the injection nozzle. Since the air grooves also function as an air curtain, the airborne particles generated when the waterproof material is sprayed is effectively blocked. In the past, spraying of the waterproof material through the high pressure was possible, but this technology allows stable injection due to the static agitation method, and various problems caused by particle generation has been (damages to neighboring areas, economic loss, etc.) minimized.
옥상 및 인공지반 방근공사에 적용되는 TPO시트의 재생 소재 적용에 따른 인장성능 변화 연구
김선도 ( Kim Sun-do ),김진성 ( Kim Jin-sung ) 한국건축시공학회 2018 한국건축시공학회 학술발표대회 논문집 Vol.18 No.1
Recently, in addition to greening of roof and artificial soil, Rootproofing to prevent damage to the waterproof layer and structures by roots is recognized as an important task. Therefore, various related products and construction methods have been developed and applied in the field. However, in the case of synthetic polymer-based sheets most commonly used in domestic construction sites, Most are produced using 100% new materials that are not suitable for green trends such as resource conservation and environmental protection. Therefore, in this study, we developed TPO sheet using recycled material, which is a technology that can secure eco-friendliness by utilizing recycled resources. As a result of the evaluation of tensile performance of the TPO sheet according to the recycled material content, The tensile strength of the specimens with the recycled content of 50 ~ 70% was the highest, The elongation rate of the specimen with the recycled content of 30 ~ 40% was the best.
실외 자율주행 로봇을 위한 다수의 동적 장애물 탐지 및 선속도 기반 장애물 회피기법 개발
김선도(Sun-do Kim),노치원(Chi-Won Roh),강연식(Yeonsik Kang),강성철(Sung-chul Kang),송재복(Jaebok Song) 제어로봇시스템학회 2008 제어·로봇·시스템학회 논문지 Vol.14 No.7
In this paper, we used a laser range finder (LRF) to detect both the static and dynamic obstacles for the safe navigation of a mobile robot. LRF sensor measurements containing the information of obstacle’s geometry are first processed to extract the characteristic points of the obstacle in the sensor field of view. Then the dynamic states of the characteristic points are approximated using kinematic model, which are tracked by associating the measurements with Probability Data Association Filter. Finally, the collision avoidance algorithm is developed by using fuzzy decision making algorithm depending on the states of the obstacles tracked by the proposed obstacle tracking algorithm. The performance of the proposed algorithm is evaluated through experiments with the experimental mobile robot.
변성아민 처리된 부직포를 이용한 복합방수공법의 도막·시트 간 화학적 일체화에 관한 연구
김선도 ( Kim Sun-do ),김진성 ( Kim Jin-sung ) 한국건축시공학회 2017 한국건축시공학회 학술발표대회 논문집 Vol.17 No.2
The combined waterproofing method is an excellent method to overcome the disadvantages of the single waterproofing method by composing two or more materials to complement each other, but it is a method that can cause defects such as separation and peeling between materials due to the heterogeneity of the applied two materials. In order to improve this, in this study, we aimed to develop a technology for inducing chemical unification between materials through a urea reaction with a coating material applied on the lower side by laminating a nonwoven fabric treated with a modified amine on the back surface of the sheet material, The adhesion performance test was carried out with the presence or absence of denatured amine treated nonwovens as variables. As a result of the test, it was confirmed that the adhesion performance of the specimen to which the modified amin - treated nonwoven fabric was applied was improved by about 60% or more as compared with the specimens not having the denatured amine treated specimen.
아스팔트 컴파운드 간 접합을 유도한 자착식 방수 시트의 시트 간 접합부 성능 변화 연구
김동범 ( Kim Dong-bum ),김선도 ( Kim Sun-do ),박진상 ( Park Jin-sang ),고삼석 ( Ko Sam Seog ),김병일 ( Kim Byoung-il ),오상근 ( Oh Sang-keun ) 한국건축시공학회 2017 한국건축시공학회 학술발표대회 논문집 Vol.17 No.1
The bonding of the asphalt-based waterproof sheet is carried out in such a manner that the sheet and the sheet are adhered together and the lower adhesive layer of one sheet is adhered to the upper film layer of the other sheet, and the asphalt layer and the PE or HDPE film layer are bonded. When the joints are formed in the form of junctions between heterogeneous materials and exposed to the concrete joint movements and other deteriorating factors, the integrity of the joints can deteriorate and problems such as lifting and peeling off of the joints can occur. Therefore, this study was carried out to prevent unstable joint adhesion of the asphalt compound and film layer and to prevent defects in the adhesion between self - adhesive waterproof sheets. The self-adhesive waterproof sheet of this study can maximize bond stability by inducing bond between asphalt compounds during sheet-to-sheet bonding, thereby improving bonding strength.
건설방수산업분야에서의 유효자원 재활용 및 응용 기술 현황
박진상(Park, Jin-Sang),김선도(Kim, Sun-Do),박완구(Park, Wan-Goo),김동범(Kim, Dong-Bum),이종용(Lee, Jong-Yong),오상근(Oh, Sang-Keun) 한국건설순환자원학회 2016 한국건설순환자원학회 논문집 Vol.4 No.1
본 연구는 건설방수분야의 유효자원 재활용 현황에 대하여 시장 특성 상 정확한 파악이 어려운 점을 고려하여 이에 대한 대안으로 관련 제도 및 인증을 중심으로 조사하여 분석하는 방식으로 연구를 진행하였다. 조사 대상은 건설방수분야에서 획득 가능한 유효자원 재활용 관련 인증으로 선정하였으며, 환경표지, 녹색기술, 신기술을 중심으로 현황을 파악하고 분석하였다. 현황 파악 및 분석 결과, 환경표지의 경우 총 38개 제품이 유효자원 재활용을 사유로 인증을 획득하였으며, 녹색인증은 총 10개, 신기술의 경우, 8개 기술이 유효자원 재활용을 응용한 기술로 확인되었다. 재활용된 자원은 대부분 합성고분자계(EVA, PVC 등), 폐타이어 분말, 폐고무 등이 주를 이루고 있음에 따라 건설방수분야에서의 유효자원 재활용은 전반적으로 소재의 다양성에 있어 제한적인 것으로 확인되었다. This paper intends to analyze the roles of regulations and certifications within the construction market that affect the effective recycling and application methods of construction waterproofing industries. Certifications, eco-labels, green certification patents, and new excellent technologies obtained in construction waterproofing industries are studied. In accordance to the study results, it was determined that, a total of 38 items obtained eco-labels with effective recycling as the theme, 10 items with green certifications, and 8 items with New Excellent Technologies. Regarding the types of effective recycled resources, most of them were concerned with composite-polymer(EVA, PVC, etc.) materials, waste tire powder, waste rubber, etc., which indicated that there is a clear limitation in the variety of the materials that are eligible for effective recycling in the construction waterproofing industries.