Abstract:
The present invention provides a concrete composition including, based on 100 parts by weight of cement: 10 to 40 parts by weight of a mixture consisting of 10 to 90 weight% of a hemp solution in least one form of a powder, a concentrate and an extract and 10 to 90 weight% of a hemp stem having a length of 0.5 mm to 5 cm; 10 to 30 parts by weight of a foaming particle; 5 to 15 parts by weight of a flame retardant including liquefied ammonium pyrophosphoric acid as a flame retardant supplement; 10 to 25 parts by weight of a binder; and 0.01 to 10 parts by weight of a high efficiency water reducing agent, which includes 80 to 95 weight% of naphthalene water reducing agent and 5 to 20 weight% of a polycarboxylic acid high efficiency water reducing agent, to make an amount of air in a range of 4 volume% to 6 volume% in a concrete, wherein 1 to 15 parts by weight of a viscosity modifier selected from the group consisting of trimethane ester, benzoic acid ester, ethylcyclohexane, 2,2,4-trimethyl-1,3,-petanedioldibutyrate and a filling agent selected from the group consisting of a silica, an acryl powder and quartz based on 100 parts by weight of the cement are further included. The building interior material composition according to the present invention improves durability and adds sound-absorbing power, antibacteral power, deodorization, insect repellent property, heat insulation, and ultraviolet ray blocking property while emitting far-infrared radiation, removing harmful waves and easily manipulating moisture by using a bio-friendly hemp which may be obtained from nature.
Abstract:
The present invention relates to an eco-friendly concrete composition for paving a bridge and, more specifically, to an eco-friendly concrete composition for paving a bridge deck of a bridge using seaweeds and a constructing method using the same. The present invention contains 3 to 10 parts by weight of seaweeds; 10 to 1,000 parts by weight of aggregates; 10 to 50 parts by weight of a polymer resin; 10 to 70 parts by weight of ash mixed with crushed paper ash with a weight ratio between 1: 9 and 9: 1; 2 to 30 parts by weight of a curing agent; 10 to 70 parts by weight of blast furnace slag; 3 to 5 weight% of zirconium oxide; and 10 to 70 parts by weight of zirconium silica fume; and 0.01 to 10 parts by weight of a superplasticizer based on 100 parts by weight of cement having a particle size between 3,200 and 6,500 cm2/g. The concrete composition for paving a bridge according to the present invention prevents cracks, surface separation, and escape (a port hole) by minimizing changes caused by external temperature changes.
Abstract:
The present invention provides a concrete composition, on the basis of 100 parts by weight of cement having 3,200-6,500 cm2/g of fineness, comprises: 10-40 parts by weight of seaweeds; 10-1,000 parts by weight of aggregates; 10-100 parts by weight of finely-ground fly ash having 3,000-3,800 cm2/g of fineness and 1.5-2.8 g/cm3 of density; 10-70 parts by weight of blast furnace slag; and 0.01-10 parts by weight of a high performance water reducing agent as a high performance water reducing agent comprising 80- 95 wt% of a naphthalene-based high performance water reducing agent and 5-20 wt% of a polycarboxylic acid-type high performance water reducing agent, such that a total of air capacity becomes 4-6 % of the concrete, and additionally comprises, on the basis of 100 parts by weight of cement, 1-15 parts by weight of: one viscosity reducing agent selected from trimethyl acid ester, benzoic acid ester, ethylcyclohexane, 2,2,4-trimethyl-1,3-pentanediol diisobutylate; one filler selected from silica, acryl powder, and silica sand; and one dispersant selected from a nonionic dispersant, an anionic dispersant, and a cationic dispersant. The concrete composition of the present invention can provide a concrete composition having enhanced durability and compression strength and low percentage of contraction so as to have excellent quality using seawees that can be commonly obtained.
Abstract:
PURPOSE: A fixing structure for an underground anchor bolt is provided to minimize the size of the fixing structure when the fixing structure is transferred by separating anchor bolts from support bars which support the anchor bolts. CONSTITUTION: A fixing structure for an underground anchor bolt comprises anchor bolts, supports(10), bolts(B), and pins(P). The supports support the anchor bolts. Each support is composed of first and second supports(20,30). The first support has side walls(24) having screw holes and a female screw hole fixed to the second support. The second support has a concave part and side walls(34). The concave part has a female screw hole to be fixed to the first support. The side walls have screw holes for fixing the anchor bolts. The bolt and the pins fix the anchor bolts and the supports.
Abstract:
본 발명은 클램프를 구비한 다각형 운동기구 설치대에 관한 것으로, 특히 고정체가 구비된 야외 운동기구를 야외 장소에 설치할 수 있도록 형성된 클램프를 구비한 다각면 운동기구 설치대에 있어서, 길쭉하게 형성된 바닥판몸체의 양끝단에 일방향 또는 양 방향으로 경사지게 결합단을 형성한 바닥판재를 구비하고, 적어도 3개 이상의 상기 바닥판재를 각각의 결합단이 밀착되도록 연속적으로 배치하여 삼각형 내지 12각형을 이루는 바닥판(15)을 이루도록 하며, 상기 다수의 바닥판몸체의 상면에 각각 수직프레임을 종 방향으로 수직 설치하고, 상기 다수의 수직프레임의 측면 상하단에 이격되게 설치판을 결합 구성하여 설치부재를 이루며, 상기 설치판에 운동기구를 한번의 조립과정으로 설치할 수 있도록 클램프부재를 설치부재와 운동기구의 고정체 일측단에 각각 형성한 것을 특징으로 한다. 본 발명에 의하면, 삼각형 내지 12각형을 이루는 설치부재를 야외 공원 또는 강가의 둔치 또는 주택단지 내 공원 등과 같은 장소에 설치하고, 상기 설치부재의 설치판에 각각 워킹트레이너머신, 체스트롤머신, 체스트업머신 등과 같은 서로 다른 운동기구를 설치하므로, 상기 운동기구를 설치하는 작업자는 짧은 시간에 많은 수의 운동기구를 설치할 수 있어 운동기구 설치 작업의 능률이 향상되는 효과는 물론 그 설치시간 및 비용 절감 효과를 동시에 얻을 수 있으며, 상기 설치공간의 최소화 효과를 기대할 수 있으며, 또한 원 터치 형식으로 운동기구를 설치부재의 설 치판에 설치할 수 있기 때문에 조립 시간을 줄일 수 있도록 형성된 클램프를 구비한 다각형 운동기구 설치대에 관한 것이다. 설치부재, 운동기구, 발전기, 스프라켓, 체인, 클램프홀, 클램프부재, 록킹홈, 록킹돌기, 구동부재,
Abstract:
PURPOSE: A method for developing a laser printer is provided to increase the resolution and concentration of a laser printer. CONSTITUTION: A method for developing a laser printer uses an organic sensitizer drum(1) having negative charge characteristic which holds charge; a charge part(2) which charges the front side of the sensitizer to a certain potential by using the corona discharge; an exposure part(3) which recognizes the signal of a computer to scan laser to the certain part of the sensitizer, thereby lowering potential to form the electrostatic latent image; and a development part(4) which uses a developer comprising a toner and an iron carrier.
Abstract:
A power generator is provided to perform efficient energy consumption by using electricity generated in sporting goods. One end of a first stroke delivery member(10) and a second stroke delivery member(11) is connected to sporting goods. The first stroke delivery member and the second stroke delivery member are vertically and horizontally moved. A first driving gear member(20) and a second driving gear member(21) are connected to both ends of an external rotation shaft. The first driving gear member and the second driving gear member drive the external rotation shaft into one direction by converting a back and forth motion of the first stroke delivery member and the second stroke delivery member into a rotation motion of one direction. A third driving gear member(40) and a fourth driving gear member(41) are connected to both ends of an internal rotation shaft. The third driving gear member and the fourth driving gear member drive the internal rotation shaft into one direction by converting a back and forth motion of the first stroke delivery member and the second stroke delivery member into a rotation motion of one direction.
Abstract:
A filter cigarette is provided, which extracts the harmful component in tobacco and can improve the marketability of tobacco by improving the filter rod roll paper and clip paper. A filter cigarette comprises: a cigarette body; an extraction filter which is inserted into the cigarette body; a smoke inlet port in which the filter device extracting the harmful material in the collision of the smoke is inserted; and a smoke crash projection which is integrally installed at the body.
Abstract:
본 발명은 건축 및 토목구조물의 구조부재 및 그 보강공법에 관한 것으로, 강재 H빔이나 I빔 또는 빌트업빔을 사용한 강재보에서 강봉에 의한 프리스트레스 힘을 적용한 상태에서 고강도 인장재를 상하부를 고정하여 낮은 형고의 장지간 보를 가능하게 하도록 한 응력보강 강재보 및 그 보강공법을 제안하는데 목적이 있다. 이를 위해 본 발명에서는 건축물이나 토목구조물에 슬래브를 지지하는 강재보가 보강되는 공법에 있어서, 하부에 정착구 및 강봉이 설치된 강형재에 프리스트레스를 도입하여 상단에 인장응력이 작용하고 하단에는 압축응력이 작용하도록 하는 단계;와 상기 강형재의 상부와 하부에 각각 고강도 강재가 강결접합되는 단계;와 강결접합된 합성 강재보에 가해진 프리스트레스를 해제하는 단계;와 정착구 및 강봉을 제거하는 단계;를 포함하여 구성되는 것을 특징으로 하는 상하부고정 응력보강 강재보의 보강공법이 제안된다.