• Title/Summary/Keyword: cement panel

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A Study on the Acoustic Characteristic of the Light Weight Concrete Panel Using Bottom Ash (저회를 이용한 경량판넬의 특성 연구)

  • Jeong, G.C.;Chung, J.Y.
    • Transactions of the Korean Society for Noise and Vibration Engineering
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    • v.17 no.2 s.119
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    • pp.149-154
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    • 2007
  • Recently, the method of the apartment building design is changing from wall type to moment structure. Dry walls are used plentifully. Until now, the gypsum board is used mainly but it has many problems. For improving the problems, the light weight concrete panel using cement board is used recently. The purpose of this study is to obtain basic data for the light weight concrete panel using bottom ash. As a result, some structures satisfies domestic standard concerned with sound insulation between households at the laboratory and field test.

A Study on the acoustic characteristic of the Light weight Concrete Pallet using bottom ash (Bottom ash를 이용한 경량판넬의 특성 연구(2))

  • Jeong, G.C.;Lee, S.H.;Chung, J.Y.
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 2006.11a
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    • pp.384-387
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    • 2006
  • Recently, the method of the apartment building design has been changed from wall type structures to moment structures. With like this reason, dry walls we used plentifully. Especially, the gypsum board was used from previously plentifully however the weak point of it is difficult to maintain because it weak strength. For the improvement of gypsum board, light weight concrete panel using cement board is used recently. As this study is the research of the series t on the development of non-bearing light weight concrete panel using bottom ash, the purpose of this study is to obtain basic data for application in the field. The results are that the structure 1 satisfies domestic standard concerned with sound insulation between households at the laboratory and field test.

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Prefabricated-HSPRCC panels for retrofitting of existing RC members-a pioneering study

  • Bedirhanoglu, Idris
    • Structural Engineering and Mechanics
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    • v.56 no.1
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    • pp.1-25
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    • 2015
  • The main goal of this study was to develop a convenient strengthening technique for retrofitting of reinforced concrete members. For this purpose a new retrofitting material so-called prefabricated-HSPRCC (high performance steel plate reinforced cementitious composite) panel was developed by using high performance concrete and perforated steel plate. Prefabricated-HSPRCC composes advantages of steel and high performance concrete. The prefabricated-HSPRCC panels were either only bonded on the specimens using epoxy mortar or anchored to the specimen by steel bolts as well as bonding. Effect of different variations such as prefabricated-HSPRCC panel thicknesses, steel plate thicknesses, puncture orientation of perforated steel plate, existence of anchorage etc. were studied through a simple experimental work. The behaviour of the specimens under vertical point load was also studied by using simple mechanics. The retrofitted specimens were found to exhibit much better performance both in terms of strength and deformation capability. The anchorage application was found to positively affect this improved performance. Furthermore, as a result of the tests the best parameters of prefabricated-HSPRCC plate for improving strength and deformation capacities were determined.

The Experiment Study on Site Application of the Light weight Concrete Panel Using Bottom Ash (바텀애쉬를 이용한 EPS경량콘크리트패널의 차음성능에 관한 실험적 연구)

  • Sun, Joung-Soo;Kim, Ha-Seok;Seo, Joung-Pil;Kang, Cheol;Jeong, Gab-Cheol;Kim, Jin-Man
    • Proceedings of the Korea Concrete Institute Conference
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    • 2006.05b
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    • pp.645-648
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    • 2006
  • Recently, the method of the apartment building design has been changed from wall type structures to rahmen structures. With like this reason, dry walls are used plentifully. Especially, the gypsum board was used from previously plentifully however the weak point of it is difficult to maintain because it weak strength. For the improvement of gypsum board, light weight concrete panel using cement board is used recently. As this study is the research of the series t on the development of non-bearing light weight concrete panel using bottom ash, the purpose of this study is to obtain basic data for application in the field. The results are as follows. structure 1 satisfy domestic standard concerned with sound insulation between households at the laboratory and field test.

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The Construction Method which attached Complex Stone Panel to Concrete Wall using High-Frequency Holt-Melt Machine (고주파 접착기를 사용한 복합석재판의 콘크리트 벽체 부착 시공)

  • Oh, Chang-Won
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2010.05a
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    • pp.45-49
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    • 2010
  • The contamination(stain phenomenon) of natural marble(sipeol, bianko) of art wall of on-site interior finishing system and wall of elevator hall has occurred. The bottom of the art wall of stone junction tile has defects as cracks. To solve these problems, our research team developed eco-friendly complex stone panel(stone 4T + cement board 6T) and high-frequency hot-melt construction method that can construct in winter.

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An Experimental Study on Energy Dissipation Capacity of protection according to the reinforcement panel (보강재에 따른 방호패널의 에너지 소산능력에 대한 실험적 연구)

  • Lee, Yae-Chan;Kim, Gyu-Yong;Seok, Won-Kyun;Choi, Byung-Cheol;Sasui, Sasui;Nam, Jeongsoo
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2022.04a
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    • pp.113-114
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    • 2022
  • The purpose of this study is to identify the rear energy transfer amount and time delay capability of the protection panel that has been impated by a projectile and the protection panel reinforced the foam polypropylene on the rear of the fiber reinforced cement itious composites, and compared and analyzed the load resistance capacity, energy dissipation capacity, and impact delay capacity when dynamic extreme load were applied to the specimen.

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Determinants of Quality of Financial Information: Empirical Evidence from Cement Sector of Bangladesh

  • Rahman, Md. Musfiqur;Hasan, Md. Mehedi
    • Asian Journal of Business Environment
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    • v.9 no.1
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    • pp.13-20
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    • 2019
  • Purpose - The purpose of this paper is to find out the determinants of the quality of financial information in the financial environment of the cement companies of Bangladesh. Research design, data and methodology - This study considers a total of fifty-eight firm years as the sample from the seven listed cement companies of Bangladesh during the period of 2007 to 2015. This study applies the multivariate regression analysis including the pooled OLS, panel and controlling time. Results - This study finds that profitability and external financing are the two major explanatory variables in determining the quality of financial information. This study also finds that firm size and accrual quality don't have any significant influence on quality of financial information. Conclusion - This study observed that profitability of this sector which is much volatile and prone to be manipulated. Thus, this paper suggests that higher profitability needs more scrutiny while assessing quality of financial information. Finally, this study provides some indications for future research such as considering the listed firms of other sectors of Bangladesh or cross country comparison in different country setting.

Strength Characteristic according to the 80℃ Water Curing Time Variation of the Ternary System Inorganic Binder (3성분계 무기결합재의 80℃ 수중양생 시간변화에 따른 강도특성)

  • Lee, Jin-Woo;Lee, Sang-Soo;Song, Ha-Young
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2014.05a
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    • pp.100-101
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    • 2014
  • The global warming because of the CO2 emission and solution about this emerge as the international enviroment problem. Particularly, it is the absolutely it is needed for reducing the CO2 in the cement industry and harmful material actual condition. And the construction of home and abroad and material manufacturers tries for the technology development for the carbon dioxide and harmful material reduction which the portland cement in manufacture is usually emitted along with the increase of concerns about the environment-friendly concrete and panel. Therefore, in this research, the compressive strength of the inorganic binder and flexural strength tries to be measured in order to draw the inappropriate high temperature cure time of the ternary system inorganic binder using the blast furnace slag, red mud, silica fumewhich is the industrial byproduct with the cement substitute material, and etc.

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Explosion Proof of Fiber Reinforced Cement Composite Panel subjected to Contact Explosion (접촉폭발에 의한 섬유보강 시멘트 복합체의 방폭성능)

  • Kim, Yun-Hwan;Kim, Gyu-Yong;Kim, Hong-Seop;Lee, Bo-Kyeong;Lee, Sang-Gyu;Nam, Jeong-Soo
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2016.05a
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    • pp.128-129
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    • 2016
  • This paper evaluates experimentally the explosion proof of fiber reinforced cement composite(FRCC) panels with various fibers of 2 % volume fraction subjected to contact explosions using an emulsion explosive. As a results, the proportion of the total damage in FRCC panels is not biased scabbing on the rear side with contrast to plain panels, which means that the local damage of FRCC panels was significantly controlled. The experimental results presented useful information for prediction of limited thickness on the local damage subjected to contact explosions through comparison with existing damage evaluation prediction equations.

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