• Title/Summary/Keyword: new construction material

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Form Follows Function - The Composite Construction and Mixed Structures in Modern Tall Buildings

  • Peng, Liu
    • International Journal of High-Rise Buildings
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    • v.3 no.3
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    • pp.191-198
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    • 2014
  • The tall building and super tall building has been a common building type in China, with multiple functions and complex geometry. Composite construction is broadly used in tall building structures and constitutes the mixed structure together with concrete and steel constructions. The mixture of the constructions is purposely designed for specific area based on the analysis results to achieve the best cost-effectiveness. New types of composite construction are conceived of by engineers for columns and walls. Material distribution is more flexible and innovative in the structural level and member level. However the reliability of computer model analysis should be verified carefully. Further researches in the design and build of composite construction are necessary to ensure the success of its application. Composite or Mixture Index is suggested to be used as a performance benchmark.

Comparative Analysis of Construction Productivity for Modernized Korean Housing (Hanok) (보급형 신한옥 개발을 위한 건설 생산성 분석)

  • Kim, Min;Kim, Yesol;Lee, YunSub;Jung, Youngsoo
    • Korean Journal of Construction Engineering and Management
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    • v.14 no.3
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    • pp.107-114
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    • 2013
  • The interest in traditional Korean housing has greatly increasing in Korean housing market. However, it is difficult to wildly disseminate for a high construction cost reason. In order to effectively facilitate the Hanok construction, Korean government has initiated a project that develops a new style Korean housing, which meets the requirements of low cost and modernized life style. Cost of building is mainly affected by materials and construction methods. Hanok has some special commodities those significantly impact the cost. In order to effectively cut down the costs, well-organized planning for costs is very important. Also, improving the productivity by utilizing new materials and methods can result in cost down. In this context, this paper compared and analyzed two different types of Korean housing; one is a modernized Korean house which used new materials and methods, the other is a traditional Korean house which was build up by purely traditional methods. Productivity has also been compared and analyzed for 5 major commodities between two types of models. Based on these comparative data, effect of cost down by new model has been analyzed. As a result it is confirmed that by using the new materials and methods could highly effect to increasing productivity and cost down. Especially, the cost of Roofing have been more influenced by using new material while the Wood and Finishes have been influenced by new construction method. Construction cost of Foundation (Earthwork, Concrete, Masonry) and Openings were influenced both factors, changing of materials and methods.

A study on development of artificial aggregates for embankment using reclaimed coal ash from thermoelectric power station (화력발전소 매립석탄회를 이용한 성토용 인공골재 개발 연구)

  • Yoon, Myung-Seok;Ahn, Dong-Wook;Jang, Nam-Ju;Han, Sang-Jae;Kim, Soo-Sam
    • Proceedings of the Korean Geotechical Society Conference
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    • 2008.03a
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    • pp.1051-1060
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    • 2008
  • The use of the coal ash for surcharge material, in a view of the environmental aspect, can decrease amount of the reclamation through recycling waste materials as well as prevent a destruction of the ecosystem attributed to sand picking. In addition, it can reduce both unit cost of material and construction expenses. In this study, new construction material as alternative surcharge material using coal ash, which is by-product from thermoelectric power plant, were developed. Mixing ratios of fly ash and bottom ash derived from the coal ash in Samchunpo thermoelectric power plants were determined. Furthermore, mixing conditions depending on the ratios of the cement and gypsum used for chemical additive were determined too. Uniaxial compression strength tests were conducted at different mixing conditions and Design graph of optimum mixing ratio at each required strength for economic efficiency is indicated in this paper.

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A Study about the Optical Mixing in accordance with High-Strength Steel and Concrete Strength Levels (고강도 철근과 콘크리트 강도수준에 따른 최적조합에 관한 연구)

  • Choi, Pan-Gil;Lee, Bong-Hak
    • Journal of Industrial Technology
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    • v.26 no.B
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    • pp.111-118
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    • 2006
  • The reinforced concrete structure is one of the most popular structures in real construction. Concrete has been strengtened rapidly due to the development of new material and construction technology. But as the concrete has been getting stronger, the brittleness of material has increased and the better ductility has been required. So, the study for strengthening stiffener has been urgently needed. As we said above, it is expected that the use of high strength steel and concrete will be increased. However, The experimental data is not enough for solving problems of the use of high strengthened steel and concrete. In this research, we analyzed 45 combinations of the strength levels of concrete, the thickness of material and the steel strength with regard to simple Reinforced Concrete SLAB Beam bridge. The program MIDAS CIVIL was used to find the optimal combination. As a result, it was found that strength ratio per unit section is in inverse proportion to the strength of material and that the strengths of steel are respectively 400 MPa for low strengthened concrete and 300 MPa for high strengthened concrete. For economic aspect and usability, the effect of high strength steel is not as high as we expected it would be.

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Experimental Study on Reinforcing Fiber for Civil Engineering used for Waterproofing Protection and Root Resistance Performance (방수보호재 및 방근재로서의 활용을 위한 토목용 보강섬유의 실험적 연구)

  • Kim, Bum Soo;Lee, Jung Hun;Song, Je Young;Song, Young-Chan;Kim, Yong-Ro;Oh, Sang Keun
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2017.05a
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    • pp.67-68
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    • 2017
  • This paper discusses the application of civil structure use reinforcing fiber mixed with concrete to be used as protection layer of waterproofing material and root resistant layer installed in below-grade parking lot upper slab of residential building. A performance evaluation under the prescribed method outlined in KS F 4938 was used for this new material. The testing results showed that the fiber reinforcement can be used to strengthen the protection for the waterproofing material. Also, plants that were planted in June 2016 have not yet penetrated the specimens used for root resistance testing. The domestic root resistance performance testing usually covers the period of 2 years, thus further observation to make any conclusion about the root resistance property is required.

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A Study on the Expressional Characteristic of the Machine Aesthetics in the Fashion Design(I) (패션 디자인에 나타난 기계미학의 표현 특성에 관한 연구(I))

  • 이효진
    • The Research Journal of the Costume Culture
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    • v.6 no.2
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    • pp.109-126
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    • 1998
  • The purpose of this study was to analyze the expressional characteristics of the machine aesthetics in the fashion design. First, this study was started from analyzing mechanical beauty represented on the early 20th century art style. Machine aesthetics has influenced on the art and fashion design from modern to now. Futurism was grounded in the complete renewal of human sensibility brought about by the great discoveries of science. Especially, Russia avant-garde was inspired by the Futurism, that is Rayonism, Constructivism, Suprematism. Kasimir Malevich moved on immediately to purely abstract paintings of which the first was a black square on a white canvas. He had begun the art he called 'Suprematism'. Malevich's geometry was funded on the straight line, the supremely elemental form which symbolized man's ascendancy over the chaos of nature. The square was the basic suprematist element and was a repudiation of the world of appearances, and of past art. He repudiated any marriage of convenience between the artist and the engineer. Vladimir Tatlin made some of the most revolutionary works of modern art, these were the first works to be called 'construction'. Constructivists believed that the essential conditions of the machine and the consciousness of man inevitably create an aesthetic which would reflect their time. They eulogized simple shapes. That believed that buildings and objects should be freed from the ornamental excrescences and the accumulated barnacles of past art. Consequently, under the theoretical background, the result is as follows. First, The functional formativeness of machine aesthetics was expressed as a geometrical silhouette, construction line, non-ornamental construction, simple color in the 20th century design. Second, The mechanical formativeness of machine aesthetics was expressed as a construction of new material-iron, aluminium, plastic, glass-, geometrical form of material in he 20th century design. That is, machine beauty has more concerned with the expressional ideology of the art style and the formativeness of fashion design by silhouette, construction line, material, form.

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A study on the economical analysis of non-supporting form in basement wall cases (지하옹벽 무지주 거푸집 사례의 경제성 분석에 관한 연구)

  • Kim, Jae-Yeob;Kim, Gwang-Hee;Lee, Sang-Woo;Sohn, Young-Jin
    • Journal of the Korea Institute of Building Construction
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    • v.9 no.4
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    • pp.111-117
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    • 2009
  • Considering the entire critical path, underground works in construction projects occupy a large part of the total construction period, as well as a large part of the construction costs. Particularly in the downtown area, the scale of underground work has been increasing every year. Currently, underground retaining walls, which are built at construction sites, require many skilled workers, and the works are being undertaken by means of the Euroform+Soldier system, which is quite disadvantageous in terms of the construction period. In order to complement this, forms made of new materials and new construction methods have been developed. Now more than eyer, the shortening of construction periods and the reduction of construction costs is required. Considering this, in this study, the researcher has tried to compare the Euroform+Soldier system, which has been the system most frequently used on construction sites, to the non-supporting form system, which has been used on the sites of civil engineering work. The results of the research revealed that although the Euroform+Soldier system was advantageous from the perspective of material costs, it was disadvantageous in terms of labor costs. It is thought that an additional study on a method for reducing the material costs is required, so as to revitalize the application of non-supporting forms to the construction site.

A Study on the Investigation of Space-Construction by Tatlin (타틀린의 공간구축 실험 연구 - ‘반-부조’ 작업(1913-1917)을 중심으로 -)

  • 한귀진
    • Korean Institute of Interior Design Journal
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    • v.13 no.5
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    • pp.66-73
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    • 2004
  • If we consider the origins of new architectural language in Russian, as opposed to its social dimensions, then we are looking at quite another area of pre-Revolutionary activity: art. It was Tatlin's early ‘counter-reliefs’ which first explored the way new materials might generate new artistic form. The Basis of his art is collage and the reality of materials. In 1915, he exhibited the first of his ‘counter-reliefs’, casual montages of pieces of metal that invade the space around them, making the decomposition of the forms three-dimensional. What is not in doubt is the primacy of materials in Tatlin's art. He was a key figure in the transition from art towards design and ‘construction’, the last was accomplished with ‘real materials in real space.’After the October Revolution, one of the central myths of avant-garde was the realization of a total work of art. The progress has developed in the directions to an unprecedented creative realm, situated somewhere between painting and architecture in the post-revolutionary period. Paramount among such pioneer works was Tatlin's design for a monument to the Third International in 1919. Here In an artistic form, his investigation of ‘material, volume and construction’ was clearly embodied. In the comtemporary architecture, Tatlin's concept has been a great influence on the various tendencies of spatial expressions. For example, the architecture with concept of ex-formality has many varied aspects of space composition - dynamic forms with plasticity of concrete, ex-cubic composition with free walls, disposal composition by geometric collision and superimposition, and etc.

Construction of Shakespeare Authorship in the Eighteenth Century: An Example of Edmond Malone's Edition. (18세기 셰익스피어 저자론-말로운의 편집서 중심으로)

  • Han, Younglim
    • Journal of English Language & Literature
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    • v.59 no.4
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    • pp.645-666
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    • 2013
  • In the history of the study of Shakespeare's texts the eighteenth century marked the emergence of editors, and in the history of Shakespearean editing Edmond Malone's emphasis on documentary evidence inaugurated a new stage. Malone's antiquarian scholarship sought to establish Shakespeare in the theatrical context of his age and a historically informed view of the physical circumstances under which he wrote his plays. Malone's editorial use of historical sources in terms of Shakespeare's past formulated a new mode of ascertaining his authorship: the construction of Shakespeare as a man of the theatre as well as of literature. Malone was the first scholar to recognize Shakespeare's merits as an actor, and to introduce the concept of the theatrical Shakespeare, which has become the scholarly norm since. In this respect this paper is designed to demonstrate that Malone's editorial principle and practice are characteristic of the identification of the factual documents of Shakespeare's biography, the authentication of his material to attain his true text, and the construction of his personal experiences through intensive readings of his plays. In conclusion, Malone's new criteria laid the foundation for the progress towards authorizing Shakespeare, thereby canonizing him as a figure of the theatrical and literary authority.

Research Trend and Product Development Potential of Fungal Mycelium-based Composite Materials (곰팡이 균사체 기반 복합소재의 연구 동향과 제품 개발 가능성)

  • Kim, Da-Song;Kim, Yong-Woon;Kim, Kil-Ja;Shin, Hyun-Jae
    • KSBB Journal
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    • v.32 no.3
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    • pp.174-178
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    • 2017
  • Fungal mycelium-based composite materials (FMBC) are a new biomaterial to replace the existing composite materials. To compete with lightweight, high-performance composite materials represented by fiber-reinforced plastic (FRP), various physical and chemical properties and functionality must be secured. Especially, the composite materials made by using mycelium of mushroom is called mushroom plastic. Currently, Ecovative, Grado Zero Espace and MycoWorks in USA and Europe are launching new products. Products utilizing FMBC can be launched in the market for construction materials, automobile interior materials and artificial leather substitutes. In spite of this high possibility, mass production using FMBC has not yet been reported. This review introduces the FMBC, a material that can replace existing plastics, inorganic building materials and animal skins in an environmentally and economically viable way, and looks at the possibility of future biomaterials by summarizing recent research contents.