• 제목/요약/키워드: waterproof

검색결과 475건 처리시간 0.037초

스피커 인클로저 방수효과 개선 (Improvement of Waterproof Effect for Speaker Enclosure)

  • 김한길;김용필;오정;김창수;정회경
    • 한국정보통신학회:학술대회논문집
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    • 한국정보통신학회 2012년도 추계학술대회
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    • pp.594-596
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    • 2012
  • 최근 야외 방송 및 공연에 대한 수요가 많아지고 있다. 이에 따라, 외부의 비와 같은 환경에서는 설치된 스피커에 침수와 같은 손상을 입을 수 있고, 이로 인해 진동 및 소음이 발생할 수 있다. 이에 따라, 본 논문은 이동용 라우드 스피커(Loud Speaker)의 방수효과를 개선하기 위한 실험적 연구를 수행하였다. 스피커의 성능 시험을 위해 MDF(Medium Density Fiberboard)를 이용하여 인클로저(Enclosure)를 제작하였고, 방수효과비교 실험을 위해 3가지의 마감재 즉 일반 페인트(Paint), 시트지(Sheet Paper), FRP(Fiber Reinforced Plastics)를 제안하였다.

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아스팔트 컴파운드 간 접합을 유도한 자착식 방수 시트의 시트 간 접합부 성능 변화 연구 (A Study on the Joint Performance Change of Self-Admixed Waterproofing Sheet by Induced Bonding of Asphalt Compound)

  • 김동범;김선도;박진상;고삼석;김병일;오상근
    • 한국건축시공학회:학술대회논문집
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    • 한국건축시공학회 2017년도 춘계 학술논문 발표대회
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    • pp.234-235
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    • 2017
  • 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.

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터널 굴착 중 Fan Grouting의 차수 효과에 관한 수치해석적 연구 (A numerical study on the waterproofing effect of Fan Grouting under tunnel excavation)

  • 문훈기;박경욱;이혜윤;권석훈
    • 한국터널지하공간학회 논문집
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    • 제21권2호
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    • pp.257-266
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    • 2019
  • 터널 굴착 중 발생하는 지하수는 터널 시공성 및 안정성에 중요한 영향을 끼친다. 따라서 터널의 굴착 중 발생하는 지하수의 유입을 감소시키기 위한 적절한 차수그라우팅이 필요하다. 대부분 터널 설계단계에서는 Pre Grouting을 적용하고 있으나 그라우팅 재료 및 차수효과의 적정성에 대한 분석은 미미하다. 본 연구에서는 현장의 차수 그라우팅 시공사례를 분석하고, 실측된 시공자료를 바탕으로 시공개선사항 및 그라우팅 영역의 투수계수 감소를 고려한 수치해석을 통해 차수효과를 분석하였다.

편심하중 요소를 활용한 방수형 다분력 검력계 개발 (Development of a Multi-Component Waterproof Type Force Sensor Devised with Column Elements Under Eccentric Load)

  • 김효철;신창환;유성선;함연재
    • 대한조선학회논문집
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    • 제61권3호
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    • pp.200-207
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    • 2024
  • A multi-component force sensor has been developed to measure force and moment components in high-speed flow media for submerged models. The size of the test model is determined based on the Reynolds number of the model at the test speed and expected blockage effect. A two-component force sensor unit has been created by assembling pairs of column elements arranged symmetrically under an eccentric load. The six-component force sensor is constructed with symmetric arrangements of two-component force sensor units in a rectangular plane. The signals generated from the strain gauges attached to the surface of the elements can be converted into force signals. The performance of the waterproof six-component force sensor has been evaluated through calibration. A simplified interference decomposition procedure has been introduced to increase the accuracy of measurement.

복숭아 주간부 동해 예방을 위한 피복재의 보온성 평가 (Evaluation of Thermal Insulation Properties of Covering Materials to Protect Peach Trunks against Freezing Injury)

  • 신현석;윤석규;최인명;김성종;윤익구;남은영;권정현
    • 생물환경조절학회지
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    • 제25권4호
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    • pp.288-293
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    • 2016
  • 본 연구는 복숭아 주간부 동해 예방을 위한 피복재의 보온성을 평가하기 위해 백색부직포, 황색일반지, 방수패드로 만들어진 피복재의 물리적 특성 및 보온성을 평가하고 실제 겨울철 복숭아 주간부 보온효과를 구명하여 피복재로서의 이용가능성을 검토하기 위해 수행하였다. 세 피복재 중 2겹방수패드 처리가 보온율과 열저항성이 가장 우수하였다. 2겹방수패드 처리의 주간단열효과는 $14.09^{\circ}C$ 만큼 온도상승을 차단하였고, 야간보온효과는 $7.23^{\circ}C$ 만큼 온도하강을 차단하여 보온효과가 가장 우수함을 확인하였다. 따라서 방수패드 재질을 보온피복재로 개발 보급할 경우 복숭아 주간부 동해 피해를 경감시키는데 도움을 줄 수 있을 것으로 생각되었다.

유류성분이 지하구조물의 방수층 침식에 미치는 영향평가 (Performance analysis of waterproofing corrosion as effecting oil)

  • 김영찬;이정윤;권시원;오상근
    • 한국건축시공학회:학술대회논문집
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    • 한국건축시공학회 2004년도 학술.기술논문발표회
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    • pp.91-95
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    • 2004
  • Utilization of underground construction if increased by the large size & skycraperlization of building recently. Therefore. waterproof dependence of underground construction is risen. However, water leakage was happened by rupture by concrete conduct, drying shrinkage. form tie. In underground environment soil class, degradation of waterproofing is showing to corrode by oil. An odious smell by oil, promotion evil of reinforcing rod corrosion, declination of durability can happen. Then, practical un degree of underground spare becomes low, Because oil or water permeates by construction by degradation to waterproof class corrode by oil, is considered to affect evil durability of construction.

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PPCC(Polymer-portland-cement concrete)를 이용한 방수 및 부착 성능 평가 (Evaluation of Performance of Adhesion and Waterproof Using Polymer-portland-cement Concrete)

  • 김경환;박미연;정원용;문재우;장승엽
    • 한국철도학회:학술대회논문집
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    • 한국철도학회 2011년도 정기총회 및 추계학술대회 논문집
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    • pp.3172-3179
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    • 2011
  • Several materials using polymer-portland-cement concrete have developed to have not only strength of attachment with body, but also waterproof function and strong anti-sodium chloride properties. Especially, in case of railway, unlike other public transportation, it is very difficult to doing the repair and reinforcement work of structure during service time. Therefore, the development and study of materials having characteristics of structural strength, unification behavior with body, and resistance of crack are very important. Accordingly, the characteristic of material of polymer based concrete is indicated compared with the experiment and analysis through this study, and suggested application to railway tunnel, bridge, and concrete track structure.

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콘크리트용 코팅재의 구열추종성과 그 적용에 의한 해양콘크리트 구조의 피로수명 증가 (Crack obeying ability of coating material and Increasing in fatigue life of coated marine concrete)

  • 사림신장;정상정일;권혁문;송하행의;태야지사
    • 한국콘크리트학회:학술대회논문집
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    • 한국콘크리트학회 1992년도 가을 학술발표회 논문집
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    • pp.131-134
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    • 1992
  • This paper deals with the obeying ability to the crack of waterproof membrane (produced from polybutadiene- or epoxy type resine) under static and repetitive loading, and an increase in fatigue life of marine concrete structure by applying the waterproof membrane. From experimental results, it is cleared that the obeying ability for crack under repetitive loading is smaller than that under static loading. With regard to fatigue life, the use of membrane possessed large obeying performance under repetitive loading results in significantly increase in fatigue life of marine concrete structure

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무기질계 탄성 도막재와 고무 아스팔트를 적층한 일체형 방수재의 시공특성에 관한 실험적 연구 (A study on a performance the appliable rubber asphalt of monolithic waterproofing material of construction quality and the cement polymer modified waterproof coating membrane material of surface treatment.)

  • 박진상;최성민;박영태;오상근
    • 한국건축시공학회:학술대회논문집
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    • 한국건축시공학회 2005년도 춘계 학술기술논문발표대회 논문집
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    • pp.223-226
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    • 2005
  • In this study on the appliable Asphalt sheet of monolithic and inorganic matter waterproofing ,Fing material using of field because of problem of complex waterproofing sheet. Before this cement polymer modified waterproof coating and appliable asphalt sheet of monolithic whether have stability by method of construction about all style waterproofing that evaluate to new method of construction development naturally big emphasis put and try to approach. Did performance test item first at, as a result, drew by suitable thing in all KS items. This is considered to have more effective spot construction work because if means that have stability by material as well as method of construction.

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