Abstract:
PURPOSE: A method for manufacturing a cement composite material containing carbon nanotubes and a method for manufacturing a carbon nanotube-cement structure using the cement composite material are provided to improve the dispersion capability of carbon nanotubes in a cement matrix by physically dispersing the carbon nanotubes using silica fume. CONSTITUTION: A cement composite material is based on carbon nanotubes, silica fume, cement, and a poly (carboxylic acid)-based super-fluidizing agent. The contents of the carbon nanotubes and the silica fume are 0.15-0.3 weight% and 10-30 weight%, respectively, based on the content of the cement. A method for manufacturing a cement composite material comprises the steps of: dry-mixing carbon nanotubes, silica fume, and cement for a predetermined period of time (S11); and mixing water and a poly (carboxylic acid)-based super-fluidizing agent with the dry-mixed mixture for a predetermined period of time (S12). A method for manufacturing a carbon nanotube-cement structure comprises the steps of: injecting a cement composite material into a mold; preparing a carbon nanotube-cement base material in a specific shape by demolding the cement composite material from the mold after a predetermined period of time; and curing the carbon nanotube-cement structure base material in water for a predetermined period of time. [Reference numerals] (AA) Start; (BB) End; (S11) Dry-mixing carbon nanotubes, silica fume, cement, and fine aggregate; (S12) Mixing after adding water and a poly (carboxylic acid)-based super-fluidizing agent
Abstract:
본 발명은 무인운전주행, 실시간 도로 교통정보 전달, 교량 관리, 전기자동차에 대한 급전 등이 이루어질 수 있는 고성능 도로(Smart highway)를 구현할 수 있도록 하는 케이블 매설 스마트 바닥판 모듈, 이를 구비한 스마트 도로구조 및 그 시공방법에 관한 것이다. 구체적으로 본 발명에서는 종방향으로 연장되어 있는 콘크리트 바닥판(11)으로 이루어지며, 상기 콘크리트 바닥판(11)의 하면으로부터 철근 덮게 두께 확보를 위한 스페이서(15)가 배치되고, 상기 스페이서(15) 위에 종방향으로 간격을 두고 복수개의 보강철근(12)이 횡방향으로 배치되며, 상기 보강철근(12) 위에는 종방향으로 연장되어 있는 케이블 보호관(13)이 배치되고, 상기 케이블 보호관(13) 내에는 종방향으로 케이블(14)이 배치되어 있어, 상기 바닥판 모듈(1)이 도로의 표면으로부터 오목하게 형성된 오목부(20)에 매립되어 설치된 상태에서 상부로 차량이 통행할 때, 상기 케이블(14)로부터 차량의 수신기(110)로 센서에 의한 정보 또는 전력이 무선으로 전달되는 것을 특징으로 하는 스마트 바닥판 모듈, 그리고 이를 구비한 스마트 도로구조 및 그 시공방법이 제공된다.
Abstract:
PURPOSE: A noise control sliding window having a sound insulation plate attached structure and a noise control method for a sliding window by attachment of a sound insulation plate are provided to improve sound insulation performance while minimizing the weight of a window because a sound insulation plate is installed on the outer side of the window, separate from the window glass. CONSTITUTION: A noise control sliding window having a sound insulation plate attached structure comprises a window glass(2), a frame(3), a supporting member(11), and a sound insulation plate(10). The frame is connected to the edges of the window glass. The supporting member is attached to the frame to protrude outward from the window. The sound insulation plate, which is formed out of polymer in a sheet form, is installed separate from the window glass as being supported with the support frame and sealed with a sealant(12).
Abstract:
PURPOSE: A closed structure of a sliding door using a pressure roller and a sliding door having the same are provided to enable a door to be softly opened/closed and to enable rollers to maintain a contact state since when the sliding door is close, one roller softly climbs over the other roller. CONSTITUTION: A closed structure of a sliding door using a pressure roller comprises a first door(100) and a second door(200). A pressure roller member, comprising a rotatable roller and a pressure roller, is installed on opposite faces of one of facing vertical frames of the first and second doors, and a rotatable roller is installed on opposite faces of the other vertical frame. When a sliding door is close, the roller of the pressure roller member of one vertical frame makes contact with the rotatable roller of the other vertical frame, each roller rotates, and the roller of the pressure roller member is pressed and climbs over the other rotatable roller.
Abstract:
PURPOSE: A shield structure of a door hinge using a sliding member mounted on a door frame is provided to improve sound proof function by blocking the gap between door plates which are facing each other. CONSTITUTION: A shield structure of a door hinge using a sliding member mounted on a door frame comprises a sliding shielding member(400) and a back and forth moving device(500). The sliding shielding member is located a door frame(200) and is protruded using a sliding method. The back and forth moving device moves the sliding shielding member back and forth.
Abstract:
PURPOSE: A shield structure of a door hinge using a sliding member formed in a door frame is provided to improve a soundproof function by sealing the gaps between side surfaces facing door frames. CONSTITUTION: A shield structure of a door hinge using a sliding member comprises a sliding shielding member(400) and a back and forth moving device(500). The sliding shielding member is formed on a door and is projected by using a sliding method. The sliding shielding member moves the back and forth moving device back and forth by sliding.
Abstract:
PURPOSE: A soundproof structure for a sliding door using a roller and a pressure plate and a soundproof assembly are provided to improve durability and soundproof performance by being installed on a door frame. CONSTITUTION: A soundproof structure for a sliding door comprises a concave part(3), a pressure plate(11), a side pressure roller member(12), and a roller(121). The concave part is concavely formed on a door frame(2). The pressure plate is formed on the concave part of flexible materials. The side pressure roller member is elastically expanded and contracted. The roller is installed on the side pressure roller member.
Abstract:
PURPOSE: A protective wall and an installation structure is provided to prevent second accidents due to movement of protective walls by bearing impact force using tensile force of a reinforcing rod or tensile materials. CONSTITUTION: The installation structure of a protective wall(101) comprises followings. A side hole is formed from the side of the protective wall toward a bottom surface to be inclined. A tensile combining material(113) is installed on a vehicle traveling structure under the protective wall corresponding to the slope of the side hole. When the protective wall is mounted on the vehicle traveling structure, the tension combining material is inserted into the side hole.