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Journal articles on the topic 'Panel construction'
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1
Ducharme, Robert. "Acoustic construction panel." Journal of the Acoustical Society of America 93, no. 1 (January 1993): 591. http://dx.doi.org/10.1121/1.405568.
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Nikolaev, V. N., V. F. Stepanova, and A. V. Mikhailova. "Innovative Energy-Saving Sandwich-Panels for Industrial Construction." Stroitel'nye Materialy 787, no. 12 (2020): 47–51. http://dx.doi.org/10.31659/0585-430x-2020-787-12-47-51.
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Today, large-panel housing construction occupies a leading position, both in terms of construction speed and sales, which contributes to an increase in the volume of precast concrete housing construction. Outdated series of large-panel houses do not meet modern requirements. Old faceless panel houses are gradually replaced by beautiful housing complexes with different types of facades. At present, in the technology of construction of panel houses from sandwich-panels, the relevant trend is to reduce the standard thickness of the facade layer of a three-layer sandwich-panel (GOST 31310–2015 “ Three-Layer Reinforced Concrete Wall Panels with Effective Insulation. General Technical Conditions”) from 70 mm to 40 mm or less. Panel houses require a reduction in metal consumption, material consumption and improvement of thermal characteristics. This requires the development and implementation of new materials. The use of such construction products made of composite materials as diagonal flexible composite connections, flexible mounting loops and composite reinforcement mesh will make it possible to reduce the thickness of the protective layer of concrete without compromising the stability of the structure under the influence of the external environment due to the high corrosion resistance of the composite, reduce the weight of the panel, reduce the cost of manufacturing a unit of panel, increase the energy efficiency of the panel, ensure long-term strength of enclosing structures – create an innovative energy-efficient reinforced concrete sandwich panel of the XXI century.
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Resnais, Peteris, Aldis Grekis, Matiss Keivs, and Baiba Gaujena. "Possibilities of Useful Use of Glued Wooden Construction Residues." Materials 14, no. 15 (July 23, 2021): 4106. http://dx.doi.org/10.3390/ma14154106.
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People have erected buildings with the use of timber structures for a long time. The uses of timber constructions are very diverse—it is used for the production of exterior wall and roof constructions, window frames and doors, and it is used for dry as well as wet premises. Scandinavian countries have extremely vast experience of using timber structures. Latvia has a rather extensive timber processing and timber structure manufacturing sector. Many companies are involved in timber processing, however, to enable even more extensive use of timber structures, environmental and technically economic requirements of contemporary building must be taken into consideration. Environmental requirements for timber structures provide certain advantages in comparison to other building materials, but technically economic requirements are very important as well. The development of manufacturing of glued constructions and research of production processes of these constructions allows one to find solutions for the reduction in the cost of timber structures, and the results of such research can ensure significant development of the use of timber structures in building, as well as reduce total construction costs. The basic objective of the study is to investigate the residual materials arising as a result of processing cross-laminated timber constructions (CLT panels), material generated as a result of high levels of construction production, and research of the opportunities to reprocess the residual materials generated as a result of laminated timber structure manufacturing into materials suitable for production of building constructions. The majority of CLT panels are manufactured using 20, 30 and 40 mm thick boards, and, during the panel manufacturing process, there are various standard thicknesses of panels, for example, 60, 80, 100, 120, 140, 160 mm, etc. Various layers are used for the creation of various thicknesses depending on the necessary technical properties. Various arrangements of the thickness of a single panel will cause different structural and physical behaviour (i.e., impact of changes in moisture, fire resistance, etc.). During the research and for the purposes of testing of CLT panels, only residues with equal types and thicknesses of lamellae were selected. Two main purposes were included in the panel testing process: (1) Comparison of technical performance of the residues of CLT panels with the classic CLT panel. Curve strength and tensile strength tests were performed in accordance with LVS EN standards (LVS EN 16351: 2016 and LVS EN 408 + A1: 2012). All the samples were prepared according to the LVS EN standards. (2) To assess the impact of two resins (melamine urea formaldehyde (MUF) and polyurethane (PU)), widely used in industry, on structural properties of recycled CLT material. Results of the research show that recycling residues of glued wooden constructions may lead to good results, and manufacturing residues of CLT panels may be successfully used in construction and for the reduction in CLT panel manufacturing costs.
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NIKOLAEV, S. V. "Innovative Replacement of Large-Panel Housing Construction by Panel-Monolithic Housing Construction (PMHC)." Zhilishchnoe Stroitel'stvo, no. 3 (2019): 3–10. http://dx.doi.org/10.31659/0044-4472-2019-3-3-10.
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Zhang, Sigong, Ying Hei Chui, and David Joo. "Lateral Load Performance of Panelized Wood I-Joist Floor Systems." Forest Products Journal 70, no. 4 (November 1, 2020): 428–38. http://dx.doi.org/10.13073/fpj-d-20-00029.
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Abstract Panelized light wood frame construction is becoming more popular due to the faster construction time and shortage of onsite skilled labor. To use light wood frame panels effectively in panelized floor systems, panel-to-panel joints must be fastened adequately to allow load transfer between panels. They must also possess in-plane shear strength and stiffness comparable to stick-built, staggered-sheathed assemblies. This study was designed to develop efficient and effective panel-to-panel joints for connecting adjacent floor panels built with wood I-joists and evaluate the efficiency of the joints in achieving diaphragm action. At first, a number of these panel-to-panel joints were tested in the laboratory using a small-scale diaphragm test setup to determine their efficiency in transferring in-plane forces between panels. Test results showed that a small decrease in in-plane stiffness was expected for the most effective joints, but their strengths were significantly higher than at the same location in a conventional site-built floor diaphragm. The presence of blockings and use of two-row nailing were found to considerably improve stiffness and strength. These features can be used to mitigate the potential reduction in mechanical performance of panelized floor construction, in comparison with the site-built wood I-joist floor.
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Hejl, M. "Construction of modular green roof panel." IOP Conference Series: Materials Science and Engineering 867 (October 9, 2020): 012009. http://dx.doi.org/10.1088/1757-899x/867/1/012009.
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Effendi, Zulfan, Abdullah Abdullah, and Mochammad Afifuddin. "PERILAKU DAN ANALISA KEKUATAN PANEL PRACETAK FERROFOAM CONCRETE YANG DIBEBANI LENTUR STUDI KASUS : PANEL PRACETAK BERBENTUK U (LU)." Jurnal Teknik Sipil 1, no. 4 (February 28, 2018): 895–902. http://dx.doi.org/10.24815/jts.v1i4.10050.
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Abstract: The construction industry still depends on conventional construction methods. The concept of conventional construction must start to look for alternatives. One of them is by using precast panels. Construction precast panels typically use normal concrete, concrete weaknesses of normal weight is too heavy. The use of lightweight concrete in precast construction can solve the problem. One type of lightweight concrete used is lightweight foam concrete. The use of lightweight foam concrete in construction of precast panels facilitate the progress in the field, able to be appointed by the workforce. The aim of research to determine the behavior and capacity analysis ferrofoam precast concrete panels loaded U-shaped bending. This experiment is testing the U-shaped bending (LU) lightweight foam concrete. Dimensions of the test specimen with a length of 2200 mm, width 600 mm and 500 mm, height 120 mm and 80 mm, 30 mm thick. Concrete mix design based on the density is 1600 kg/m3 with FAS 0.4 and 21 MPa quality plan. The results showed that the maximum capacity of panel LU 600-120 1.34 tf at 26.81 mm deflection, LU 600-80 at 0.79 tf at 46.85 mm deflection, LU 500-80 on a deflection of 0.69 tf 39 , 82 mm. Model panel collapse LU LU 600-120 and 600-80 is shear failure, but for LU 500-80 flexural failure. Ductility panel LU 600-80 only 87% of ductility LU 600-120 is a panel with high variation. Ductility panel with wide variations LU panel 500-80 88% biggest than the LU 600-80. Abstrak: Industri konstruksi masih tergantung dengan metode konstruksi konvensional. Konsep konstruksi konvensional harus mulai dicarikan alternatif pengganti. Salah satunya adalah dengan menggunakan metode panel pracetak. Konstruksi panel pracetak biasanya menggunakan beton normal, kelemahan beton normal bobot terlalu berat. Penggunaan beton ringan pada konstruksi pracetak dapat menyelesaikan permasalahan tersebut. Salah satu jenis beton ringan yang digunakan adalah beton ringan busa. Penggunaan beton ringan busa pada konstruksi panel pracetak memudahkan dalam pengerjaan dilapangan, mampu diangkat oleh tenaga kerja. Tujuan penelitian untuk mengetahui perilaku dan analisa kapasitas panel pracetak ferrofoam concrete berbentuk U yang dibebani lentur. Pengujian yang dilakukan adalah pengujian lentur berbentuk U (LU) beton ringan busa. Dimensi benda uji dengan panjang 2200 mm, lebar 600 mm dan 500 mm, tinggi 120 mm dan 80 mm, tebal 30 mm. Mix design beton berdasarkan berat jenis yaitu 1,6 dengan FAS 0,4 dan mutu rencana 21 MPa. Hasil penelitian adalah kapasitas maksimum panel LU 600-120 sesebar 1,34 tf pada lendutan 26,81 mm, LU 600-80 sebesar 0,79 tf pada lendutan 46,85 mm, LU 500-80 sebesar 0,69 tf pada lendutan 39,82 mm. Model keruntuhan panel LU 600-120 dan LU 600-80 adalah keruntuhan geser, namun untuk LU 500-80 keruntuhan lentur. Daktilitas panel LU 600-80 hanya 87% dari daktilitas LU 600-120 merupakan panel dengan variasi tinggi. Daktilitas panel dengan variasi lebar panel LU 500-80 lebih besar 88% dibanding LU 600-80.
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Ibragimov, Ruslan, Marat Badrutdinov, Natalya Pugacheva, Svetlana Kashina, and Reda Farah. "Optimization of construction time regulations for large-panel residential buildings." E3S Web of Conferences 274 (2021): 06005. http://dx.doi.org/10.1051/e3sconf/202127406005.
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The need to modernize residential construction technologies is an imperative for reducing labour, material, technical, fuel and energy resources. The purpose of the study is to optimize the construction time regulations for the large-panel residential buildings by synchronizing construction flows. The methodological basis contains the principles of climatic zoning for building construction and technical regulation, affecting the particular features of architectural design and the construction schedule. A technique for the combination of maximum allowable types of work under continuous construction arrangement has been developed and coefficient of combination of different types of work for construction flows synchronization has been determined. The practical significance of the study is to improve the process of exterior wall panels installation, provided that an integrated regulation model based on the Spider Project software package is used. The social significance of the study is to make the reduction of the construction time and saving resources possible. The originality of the study is that the combining of different work types during the installation of exterior wall panels of a large-panel residential building has been justified. The need for creation of regional regulations for the construction time has been proved.
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Omarov, Zhumabek, Gulnara Zhukenova, Leonid Bulyga, and Murat Beisembaev. "Prospects for the use of sandwich panels in the construction industry of Kazakhstan." E3S Web of Conferences 263 (2021): 01020. http://dx.doi.org/10.1051/e3sconf/202126301020.
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One of the main priorities for the implementation of the tasks set in the Address of the Head of State Nursultan Nazarbayev to the people of Kazakhstan “Kazakhstan’s way - 2050: common goal, common interests, common future” is the transition of traditional industries of Kazakhstan to the production of high value added products. Structural insulated panel (SIP) in common people is a sandwich panel. Aside from the architectural and aesthetic requirements for building projects, sandwich panels could be called the ideal building material. The shell of sandwich panels is made with a good and reliable anti-corrosion coating, the insulation material has a low thermal conductivity, minimal moisture absorption, sufficient mechanical strength, and high durability. And the sandwich panel itself is resistant to harmful ultraviolet radiation, atmospheric and mechanical influences. In addition, any communications are easily laid through sandwich panels: drilling or cutting this structure is much easier than reinforced concrete panels.
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Wang, Dongmei, Ziyou Bai, and Qianghua Liao. "3D Energy Absorption Diagram Construction of Paper Honeycomb Sandwich Panel." Shock and Vibration 2018 (2018): 1–6. http://dx.doi.org/10.1155/2018/4067062.
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Paper honeycomb sandwich panel is an environment-sensitive material. Its cushioning property is closely related to its structural factors, the temperature and humidity, random shocks, and vibration events in the logistics environment. In order to visually characterize the cushioning property of paper honeycomb sandwich panel in different logistics conditions, the energy absorption equation of per unit volume of paper honeycomb sandwich panel was constructed by piecewise function. The three-dimensional (3D) energy absorption diagram of paper honeycomb sandwich panel was constructed by connecting the inflexion of energy absorption curve. It takes into account the temperature, humidity, strain rate, and characteristics of the honeycomb structure. On the one hand, this diagram breaks through the limitation of the static compression curve of paper honeycomb sandwich panel, which depends on the test specimen and is applicable only to the standard condition. On the other hand, it breaks through the limitation of the conventional 2D energy absorption diagram which has less information. Elastic modulus was used to normalize the plateau stress and energy absorption per unit volume. This makes the 3D energy absorption diagram universal for different material sandwich panels. It provides a new theoretical basis for packaging optimized design.
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Lee, Doo-Yong, Bong-Ho Cho, Dam-I. Jung, Jae-Sub Lee, and Keun-Woo Lee. "Experimental Study on the Cyclic Behavior of Integrated Panels for Cold-Formed Steel Shear Wall System." Applied Sciences 10, no. 5 (March 1, 2020): 1649. http://dx.doi.org/10.3390/app10051649.
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Studies on the constructability of cold-formed steel (CFS) members are lacking. In this context, this paper proposes an integrated panel to replace the studs and steel sheet in the steel-sheathed wall system used in light gauge steel frames. The integrated panel was developed, to not only exhibit better structural performance and constructability than the steel-sheathed wall system, but to also reflect the appropriate details for applications to on-site panel construction. Cyclic loading tests were performed to investigate the seismic performances of three integrated panel specimens and a steel-sheathed panel specimen. The integrated panel specimens exhibited greater deformation capacity, ductility and equivalent damping ratio than the steel-sheathed panel. Although the web slenderness of the integrated member was nearly 400, the nominal strength of the integrated panel was predictable on an AISI standard. However, for stud-reinforced integrated panels, the nominal strength was overestimated by 45%–60%, and a draft equation was proposed to predict the yield strength of these panels. The proposed equation accurately predicted the yield strength of the stud-reinforced integrated panel specimens. The study results can aid in the construction of light gauge steel frames that require reinforcing parts with a high web slenderness ratio.
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Glass, J. "Wall panel renaissance: tilt-up concrete construction." Proceedings of the Institution of Civil Engineers - Structures and Buildings 140, no. 3 (August 2000): 277–89. http://dx.doi.org/10.1680/stbu.2000.140.3.277.
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Jodl, Hans Georg. "Summary of the panel discussion “Fair Construction Process - Low Construction Costs”." Geomechanik und Tunnelbau 2, no. 1 (February 2009): 115–16. http://dx.doi.org/10.1002/geot.200900010.
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Shewchuk, John P., and Cheng Guo. "Panel Stacking, Panel Sequencing, and Stack Locating in Residential Construction: Lean Approach." Journal of Construction Engineering and Management 138, no. 9 (September 2012): 1006–16. http://dx.doi.org/10.1061/(asce)co.1943-7862.0000520.
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YUDIN, I. V., I. V. PETROVA, and V. F. BOGDANOV. "Improvement of Constructive Solutions, Technology and Organization of Construction of Large-Panel and Panel-Frame Houses of Volga DSK." Stroitel'nye Materialy 746, no. 3 (2017): 4–8. http://dx.doi.org/10.31659/0585-430x-2017-746-3-4-8.
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NIKOLAEV, S. V. "Stepped Facade Created Using Overlay Panels of External Walls." Zhilishchnoe Stroitel'stvo, no. 10 (2020): 13–21. http://dx.doi.org/10.31659/0044-4472-2020-10-13-21.
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During the sixty-year period of existence of domestic large-panel housing construction, this type of housing remains the most popular due to its affordability. The transition to flexible technologies for the production of panel buildings makes it possible to create high-quality and comfortable housing. However, there is some return to the construction of panel buildings with flat monotonous expressionless facades. The article describes a method for creating stepped facades using overlay panels of external walls, the connection of decorative external layers in which «overlap» is made. This makes it possible to create stepped facades in a simple technological way, hide part of the vertical seams, increase the output of products, and simplify the achievement of the desired apartment layout. The method is protected by a Eurasian patent. Keywords: stepped exterior panel, overhead exterior panel, «overlap» connection, loop precast-monolithic connections, stepped facade, apartment layouts, multi-hollow plates.
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Абакумов, Р. Г., Roman Abakumov, И. Авилова, I. Avilova, М. Абакумова, Marina Abakumova, С. Анисимов, and R. Abakumov. "ONTOLOGY OF RESEARCH EFFICIENCY AND PROSPECTS OF LARGE-PANEL AND MONOLITHIC REINFORCED CONCRETE CONSTRUCTION OF RESIDENTIAL OBJECTS." Bulletin of Belgorod State Technological University named after. V. G. Shukhov 4, no. 10 (November 7, 2019): 40–52. http://dx.doi.org/10.34031/article_5db33b395b0bb8.51040783.
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The article is devoted to the issues of ontology, research of the effectiveness and prospects of large-panel and monolithic reinforced concrete construction of residential objects. Increasing demands on the effectiveness of multi-story housing construction determine the relevance of this study. Methodological foundations of substantiation and a comparative analysis of the effectiveness of monolithic and large-panel reinforced concrete multi-story construction are considered; prospects for the development of these housing technologies are justified. The article presents an analysis of the pros and cons of monolithic and large-panel reinforced concrete multi-storey construction of residential buildings, a comparative analysis of the processes of organization and technology of construction works. The problems of large-panel and monolithic construction are ranked according to the level of their materiality, measures to improve construction technologies are proposed. The comparative analysis of cost indicators of monolithic and panel construction on the basis of the data presented in collections of standards of the price of construction is presented. The need to introduce and update the normative documentation having legal force for regulation of the basic provisions of the modern improved large-panel construction is proved. Attention is paid to the design conditions for the manufacture and installation of the monolithic and large-panel multi-storey construction of residential buildings used in the methodological approach. Cases of expediency of comparison on criterion "duration of construction" are analyzed. The article proposes an original methodological approach for evaluating the effectiveness of monolithic and large-panel construction, taking into account the conditions and nature of the uncertainty of the initial data, which will justify the choice of the most effective options for the construction of multi-storey housing construction.
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Mante, David M., Hassan H. Abbas, George E. Ramey, and Robert W. Barnes. "Full-Scale Implementation and Testing of Full-Depth Precast Bridge Deck Panels." Transportation Research Record: Journal of the Transportation Research Board 2522, no. 1 (January 2015): 3–17. http://dx.doi.org/10.3141/2522-01.
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A bridge deck panel system using nonprestressed full-depth precast concrete bridge deck panels with continuous shear pockets was investigated. First, the research team performed conceptual improvement, design, detailing, and fabrication studies on a specific deck replacement system (System CD-2) previously proposed by NCHRP Project 12-65 researchers. Key improvements to the CD-2 deck panel system included modifications to the transverse joint coupler for ease of construction and the addition of a longitudinal staged-construction joint to expedite bridge deck replacement projects. Next, an experimental program was carried out to construct and perform service-level load testing on a full-size precast deck panel assemblage that incorporated the refinements. On the basis of static and cyclic loading test results, it was found that the modified CD-2 deck panel system as a whole performed satisfactorily with regard to AASHTO serviceability requirements.
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TERATO, Yumiko, and Yoshinori KITSUTAKA. "APPLICATION OF HOLLOW PRESTRESSED CONCRETE PANEL FOR PLANTING WALL PANEL." AIJ Journal of Technology and Design 13, no. 25 (2007): 29–32. http://dx.doi.org/10.3130/aijt.13.29.
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Vavrovič, Boris. "Importance of Envelope Construction Renewal in Panel Apartment Buildings in Terms of Basic Thermal Properties." Advanced Materials Research 855 (December 2013): 97–101. http://dx.doi.org/10.4028/www.scientific.net/amr.855.97.
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Envelope constructions of panel apartment buildings in Slovakia are made up of one or more layers of external panels. They typically have one or double-skin flat roofs. Nowadays, almost all envelope constructions, that yet have not been insulated and renovated, show to have insufficient thermoisolation performances. Especially roofs seems to have unsatisfactory moisture regime facilities. The article describes fundamental thermal technical characteristics of envelope constructions (external walls and flat roofs) in panel appartment buildings in their original state and after renewal in the form of additional thermal insulation.
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Boscato, Giosuè, Alessandra Dal Cin, and Riccardo Destro. "Structural Behaviour and Comparison of CGF Panels." Advanced Materials Research 900 (February 2014): 463–67. http://dx.doi.org/10.4028/www.scientific.net/amr.900.463.
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A CGF Panel (Concrete Glulam Framed Panel) is a concrete panel with a glued laminated timber frame. The experimentation on this new construction system at LabSCo (Laboratory of Strength of Materials) of IUAV University of Venice, inspired a wide research on buildings made of this construction system investigating in different aspect of building behaviour: particularly about mechanical property of the materials, mechanical of the system and building physics. This paper presents the results of quasi-static in-plane tests on single panel and configurations of some different panels. The tests in the laboratory are used for measuring the in-plane strength and stiffness of individual panels and wall sections consist of some panels in order to verify and measure the behavior of the connections between the various parts of the single panel and the connection between the panels. Thanks to the results obtained it was possible carry out the FE model to calibrate the characteristics in relation to experimental data. Finally, in order to compare this constructive system with the well known X-lam systems, on the basis of the calibration of the models we were able to set up a comparable FE model with those of the X-lam wall described in the publication: "Quasi-Static and Pseudo-Dynamic Tests on XLAM Walls and Buildings " inherent in the SOFIE project coordinated by the CNR-IVALSA (Italian National Research Council - Trees and Timber Institute)
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Hsiao, Cheng, and Qiankun Zhou. "Panel parametric, semiparametric, and nonparametric construction of counterfactuals." Journal of Applied Econometrics 34, no. 4 (April 12, 2019): 463–81. http://dx.doi.org/10.1002/jae.2702.
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Yang, Li Fang, Wen Li Chen, and Fan Yu Meng. "Research of Simulation and Design of Microperforated Panel Construction." Advanced Materials Research 308-310 (August 2011): 2450–53. http://dx.doi.org/10.4028/www.scientific.net/amr.308-310.2450.
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Full consideration and prediction of noise problem of product will be helpful to improve its quality, shorten production period and reduce cost of product. The microperforated panel is a kind of special absorbing material, through proper control of diameter, perforation rate, cavity length , number of panel and so on, the peak value, frequency band of absorption coefficient can be controlled. According to the absorption coefficient characteristics, the microperforated panel can be used to control some special noise structure. Based on the idea, the engineering software matlab is utilized in the paper to simulate the microperforated panel construction to obtain some useful microperforated panel construction for practical noise control.
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Jeon, Seok Hyeon, Kwang-Il Cho, Jungwon Huh, and Jin-Hee Ahn. "The Performance Assessment of a Precast, Panel-Segmented Arch Bridge with Outriggers." Applied Sciences 9, no. 21 (November 1, 2019): 4646. http://dx.doi.org/10.3390/app9214646.
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Stone arch bridges, which are globally implemented, are advantageous with respect to material strength and durability. To minimize environmental damage from arch bridges, a structurally stable scheme that can resist variable external loads is required. This paper proposes a segmented precast arch bridge with outriggers to resist both the tensile force applied on the precast panels and the compressive force during construction and use. To assess the structural behavior and safety of the proposed arch bridge, a three-dimensional (3D) nonlinear structural analysis was conducted, considering the construction step and rise ratio of the arch bridge. The structural analysis of the proposed arch bridge revealed that its maximum horizontal and vertical displacements occurred at the support of the precast panel and the arch crown in a self-weight state. However, because of the compressive resistance characteristics of the outriggers connected to the precast panels, the structure demonstrated an effective performance in the self-weight state. With an increase in the construction steps, and the final completion of proposed arch bridge via installation of the precast arch segments and earthwork for the precast arch bridge with outriggers, the deformation of the arch members was mitigated, and the relative difference between the stress distributions of the members reduced. Hence, the arch bridge achieved structural stability. Based on the thrust line analysis results of the arch bridge with respect to the construction step using 3D structural analysis results, the thrust line was formed outside the precast panel at the arch crown and support, so was attributed to the behavior of the arch bridge in a self-weight state. The thrust line was found to act within the precast panel depending on the construction step. Analysis results confirmed that the behavior of the precast panel arch bridge with the proposed outrigger was stable and structurally effective.
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Adeeb, S. M., B. W. J. Scholefield, T. G. Brown, N. G. Shrive, J. Kroman, V. H. Perry, and G. Tadros. "Modelling, testing, and construction of the first Ductal® canopy in the world." Canadian Journal of Civil Engineering 32, no. 6 (December 1, 2005): 1152–65. http://dx.doi.org/10.1139/l05-065.
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Two series of nine architectural shell structures — constructed of a 20 mm thick layer of a new ultra-high performance cement (UPHC) composite with organic fibres (Ductal®) — were proposed to form the roofs of a new station for the light rail transit system in Calgary. Each section of the roofs consists of three panels each 6 m × 4.5 m connected to provide an 18 m continuous system. The City of Calgary required testing of a full-scale prototype panel for both static and dynamic responses. Finite element analysis (FEA) was used to determine the boundary conditions to be imposed on one edge of the prototype panel during the tests to simulate the presence of the other two in the actual structure. The FEA was also used to determine the critical (independent) snow and wind loading cases. The analyses and the testing procedures for the full-scale instrumented panel are described. The panel withstood both full factored loads without damage. The methods for manufacturing and assembling the canopy and roofs are also described.Key words: UHPC, shell structure, finite element analysis, static test, dynamic test.
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Kostić, Radinko, Nikolay Vatin, and Vera Murgul. "Fire Safeguards of “Plastbau” Construction." Applied Mechanics and Materials 725-726 (January 2015): 138–45. http://dx.doi.org/10.4028/www.scientific.net/amm.725-726.138.
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There are exposed the results of resistance testing on effects of fire in interfloor construction and wall panel made according to “plastbau” system technology out of expandable polystyrene, when they are protected by mortar extension as an insulator. The applied testing method is prescribed by standard form EN 13501-2. Based on testing results, there is affirmed that interfloor construction fulfills resistance criteria on effects of fire of 180 min, and wall panel fulfills resistance criteria on effects of fire of 60 min, when it is protected by mortar extension as an insulator..
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Kalús, Daniel, Mária Kurčová, Zuzana Straková, and Matej Kubica. "Thermaly Active Interior Panels with an Integrated Active Area." Slovak Journal of Civil Engineering 29, no. 1 (March 1, 2021): 42–47. http://dx.doi.org/10.2478/sjce-2021-0007.
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Abstract Panels with an integrated active area can be used for interior applications for walls, ceilings and floor heating, and alternatively as a wet or dry type of construction. At present, most panels with an integrated active area are made of gypsum boards with milled channels and embedded pipes. Some manufacturers already supply these panels with thermal insulation (Radwan et al., 2021; Zhang et al., 2020). Certain limitations, mainly regarding the diameter and material of the pipes, apply to the panels with channels milled in the gypsum board and embedded pipes. These limitations are closely related to the high cost of such panels and to the limited heat/cooling output. The disadvantages of these panels are eliminated by the construction of a thermal insulation panel with active thermal protection for application with an active heat transfer control system (indoor thermally active panel (ITAP)) in accordance with European Patent No. EP 2 572 057 B1 (Kalús, 2011).
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Keller, Bettina, Markus P. Radsak, Joerg Faber, and Alexandra Russo. "A New Algorithm and Panel Construction for Pediatric Leukemia Immunophenotyping Using 10-Color Flow Cytometry." Blood 120, no. 21 (November 16, 2012): 4799. http://dx.doi.org/10.1182/blood.v120.21.4799.4799.
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Abstract Abstract 4799 Background: Rapid identification and quantification of abnormal cell populations in minimal specimen are crucial for diagnosis and longitudinal minimal residual disease (MRD) testing of childhood leukemia. So far, most standard immunophenotypic analyses are performed using antibody panels with up to five-colors and require high cell numbers. For infant and pediatric specimen, high-level multicolor analyses is highly desirable to gather sufficient data for initial diagnostic and follow up monitoring of pathologic populations. Objective: In this study, we aimed to establish a newly defined pediatric multicolor flow cytometric panel algorithm with high reliability yet minimal specimen requirement. Results: We defined a 10-color flow cytometric panel using the new violet laser dye “KromeOrange (KO)”. Applying CD45-KO/Side Scatter gating, combined with 2 additional backbone markers the panel is designed in two consecutive steps. In the first step, a single standardized 10-color-“screening tube” (FITC-HLA-DR, PE-CD15/CD56, ECD-CD5, PC5.5-CD33, PC7-CD13, APC-CD117, APC A700-CD34, APC A750-CD19, PB-CD3, KrO-CD45) is applied for initial orientation of specific lineage assignment. Based on results obtained with the screening tube, a specific multi-tube “classification panel” is used to complete detailed characterization of lineage specific malignancy and maturation stage. Suitable specimens include fresh blood, bone marrow and all body fluids. All samples are stained directly with monoclonal antibodies, followed by the lyses of erythrocytes and a short wash. Compared to standard five color panel previously used the application of greater numbers of informative antibodies in the screening tube and in the 2ndstep muti-tube classification panel is cost and time efficient and results in a more precise characterization of any single event. Conclusion: Our panel construction and algorithm definition for infant and pediatric leukemia immunophenotyping is one of the first 10-color flow cytometry panels described for this application. Advantages are the possibility to obtain highly specific information from minimal specimens with significantly improved laboratory efficiency. The overall performance is currently tested in a routine clinical setting. Disclosures: No relevant conflicts of interest to declare.
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Harmaji, Andrie, and Siswanti Zuraida. "Green Construction Material: Polyethylene Waste Reinforce Concrete for Panel Application." International Journal of Built Environment and Scientific Research 3, no. 1 (September 1, 2019): 1. http://dx.doi.org/10.24853/ijbesr.3.1.1-6.
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Plastic Composite Panel (PCP) is an innovation in the field of materials that uses recycling plastic waste to construct composite cement panels. This material innovation is one of the solutionto answer environmental problems caused by plastic waste. Some previous studies mostly used plastic waste for concrete aggregates. Thus, making this study different from previous studies. The purpose of this study is to make a prototype of a PCP that is environmentally friendly with panel dimensions sample of 100 x 30 x 10 mm thick. The method used is an experimental test using materials in the form of polyethylene terephtalate (PET) from used water bottle and cement waste as well as testing its physical and mechanical properties carried out in the laboratory. Variations in PET used for testing materials are 0- 20%. In addition to mechanical properties, specific gravity and porosity test is carried out. The best results shows that 5% PET addition to cement paste increase the flexutral strength to 4.47 MPa compared to control sample which has 3.26 MPa. Porosity test shows that addition of 10% PET reduce the density of PCP to 63.64% compared to control sample that has 44.44%.
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Janda, Miloslav, and Miloš Zich. "Dynamic Component Load of the Prefabricated Panels during their Handling." Solid State Phenomena 272 (February 2018): 82–87. http://dx.doi.org/10.4028/www.scientific.net/ssp.272.82.
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Prefabricated panels are handled by various types of crane during the assembly (bridge crane in the production hall and construction crane on site). The panel is loaded with inertial forces during manipulation caused by crane's starting and breaking movement. These forces significantly affect the design of the transport system (anchors, ropes, etc. In literature there are different values of dynamic coefficient for different types of crane. In the experiment, the magnitude of the force in the crane hinge was measured during the handling of various panel types in the production hall and during the construction site installation. The static value of the force size was determined at the moment when the panel freely hanged on crane hinge. The measured values are further compared with the manufacturer’s recommendation for the design of the transport anchors.
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Frómeta, Yokasta García, Francisco Ramírez Rivera, Víctor González Holguín, and Jesús Cuadrado. "Experimental Investigation of Thermal Conductivity from Insulation Based on Rice Hulks: Guarded and Calibrated Hot Box Method." Materials Science Forum 1046 (September 22, 2021): 71–76. http://dx.doi.org/10.4028/www.scientific.net/msf.1046.71.
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In developing countries, large quantities of agricultural residues associated with harvests are generated, given that agriculture is one of the most important economic activities. The valorization of these residues for the construction sector could contribute to the improvement of energy efficiency in buildings. Through passive techniques, the construction of insulating thermal-acoustics panels, blocks, and aggregate for reinforced concrete can improve the energy efficiency. In this study, an experiment was performed to measure thermal conductivity of the Agricultural-Thermal Insulation Panel (ATIP) based on rice hulks. These Agricultural-Thermal Insulation Panels were elaborated follow a standard process to compaction of the rice hulks to be employed as insulation material with a panel dimension of 200x200x34.5(mm3). A “Hot Box” configuration was used to obtain the thermal conductivity of the panels, using different temperature gradients between hot and cold chambers.
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Ding, Ke Wei, Gang Wang, and Wan Yun Yin. "Application of Composite Sandwich Panels in Construction Engineering." Applied Mechanics and Materials 291-294 (February 2013): 1172–76. http://dx.doi.org/10.4028/www.scientific.net/amm.291-294.1172.
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As a new constructional material, composite sandwich panels are applied in engineering more often than ever. This paper focuses on the structure and foreign research status of sandwich panels which are used in practical engineering problems that need attention. The structure of the composition of the sandwich panel, force characteristics and analysis methods, a set of load-bearing thermal insulation, sound insulation and decoration in one of the new sandwich insulation composite wall form, can comprehensively address architectural, structural safety, and contradict the thermal insulation performance and durability problem. Thus they can be better applied to the engineering practice and meet the development requirement of building energy-saving and adaptation of housing industrialization.
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Mosey, Handy Indra Regain. "SIMULASI DAN PEMBUATAN RANGKAIAN SISTEM KONTROL PENGISIAN BATERAI UNTUK PEMBANGKIT LISTRIK TENAGA SURYA." JURNAL ILMIAH SAINS 16, no. 1 (June 23, 2016): 30. http://dx.doi.org/10.35799/jis.16.1.2016.12526.
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ABSTRAK Paper ini membahas tentang simulasi dan pembuatan rangkaian sistem kontrol pengisian baterai yang bersumber dari sebuah pembangkit listrik tenaga surya (Panel Surya). Pengisian baterai yang terlalu lama pada sebuah instalasi pembangkit listrik tenaga surya akan menyebabkan baterai cepat rusak sehingga dibutuhkan sebuah sistem yang dapat berfungsi sebagai pengontrol. Metode penelitian yang dilakukan yaitu dengan merangkai rangkaian yang didapat dari pustaka kemudian disimulasikan dengan perangkat lunak Proteus ISIS Profesional, selanjutnya dilakukan pembuatan rangkaian elektronika dalam sebuah PCB. Tegangan yang dihasilkan oleh baterai dibaca oleh sistem kontrol kemudian sistem akan memilih apabila tegangan yang diberikan oleh panel surya akan diisi pada baterai atau dialihkan kepada sebuah beban tambahan. Hasil yang didapatkan dalam penelitian menunjukan bahwa sistem kontrol pengisian baterai yang dibangun telah bekerja sesuai dengan simulasi dan dapat bekerja dengan baik. Kata-kata kunci: sistem kontrol baterai, switch, panel surya. SIMULATION AND CONSTRUCTION OF A BATTERY CHARGING CONTROLLER SYSTEM FOR SOLAR POWER PLANTS ABSTRACT This paper discusses about circuit simulation and construction of a battery charging control system from a solar power plant (Solar Panels). Charging the battery for too long on an installation of solar power plants will cause the battery to be broken and so we need a system that can function as a controller. The research method is made by simulating a baterry charging control circuit from a reference and then simulated by Proteus ISIS Professional software, then constructing the circuit on a PCB. The voltage produced by the solar panel is read by the control system then the system will prefer if the voltage supplied by the solar panels will be filled on the battery or transferred to an additional load. Result obtained in this study indicate that the baterry charging control system are working in accordance with the software simulation and can work as a baterry charging control system for a solar panel instalation. Keywords: Baterry charging control, switch, solar panel.
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Bui Thi Thanh, Mai, Cuong Nguyen Huy, Quang Ngo Dang, and Tai Dinh Huu. "Experimental study on flexural and shear behaviour of sandwich panels using glass textile reinforced concrete and autoclaved aerated concrete." Transport and Communications Science Journal 71, no. 1 (January 31, 2020): 18–26. http://dx.doi.org/10.25073/tcsj.71.1.3.
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Textile-reinforced concrete (TRC) is a new composite material made of high-strength textiles embedded within fine grained concrete (FGC). The application of TRC leads to the design of thin and slender structures or for repairing and strengthening of existing structural members. Autoclaved aerated concrete (AAC) is an ultra-lightweight concrete, which can be combined with high strength TRC to form some kinds of precast curtain panels in construction. The concept of the TRC-AAC panel is based on the theory of sandwich construction with strong and stiff skins, like TRC layers, bonded to a lightweight AAC core. The resulting hybrid TRC-AAC panel can be used as structural or non-structural member for the housing construction. In this paper, the flexural and shear performance of hybrid TRC-AAC sandwich panels is presented by means of experimental results. The sandwich panels use three layers of different materials: TRC for the tensile layer, AAC for the core material and FGC for the compressive layer. Three different types of glass textile were used as reinforcements in the TRC layers.
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Conrardy, Chris, and Randy Dull. "Control of Distortion in Thin Ship Panels." Journal of Ship Production 13, no. 02 (May 1, 1997): 83–92. http://dx.doi.org/10.5957/jsp.1997.13.2.83.
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The increased use of thin section (i.e., less than 10-mm (3/8-in.) thick) steel in ship panel construction has aggravated distortion problems, adding to the costs for fitting and flame straightening. This paper describes the results of a study to evaluate techniques for control of distortion in thin panels used in ship construction. The objective of this project is to identify cost effective techniques for controlling distortion. Buckling is usually the dominant mode of distortion in thin panels, followed by angular distortion. Means of reducing both forms of distortion are discussed. During the design phase relatively small adjustments to the design, such as changing plate thickness or stiffener spacing, can significantly reduce distortion. Improving manufacturing techniques, including reducing weld size, implementing intermittent welding, and restraining the panel during welding, can also make a major impact on reducing distortion. New techniques such as egg-crate construction, laser welding, thermal tensioning, back-side line heating, back-bending, and weld quenching also show promise.
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Piotrowski, Andrzej, and Tadeusz Nieszporek. "The Solar Tracker – A Control System and a Frame Construction." Applied Mechanics and Materials 613 (August 2014): 340–49. http://dx.doi.org/10.4028/www.scientific.net/amm.613.340.
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Ecology is among the most important challenges facing humankind in the 21st century. The depletion of energy sources compels us to search for alternative methods of electricity generation. One of the most common methods is to use photovoltaic panels that utilize solar energy for generating electric current. Photovoltaic panels should be positioned perpendicularly to the solar radiation incidence direction. Their efficiency is then the highest. Special frames are constructed to support the photovoltaic panel and allow it to rotate. A frame structure developed at the Institute of Machines Technology of the Czestochowa University of Technology is equipped with an advanced system that tracks the apparent motion of the sun. For its construction, steel sections and a micro-processor control system were used. The control program uses a hybrid algorithm that counts the sun position according to the date and time and reads out the indications of a differential sensor built from photoresistors. The position of the photovoltaic panel relative to the sun is corrected with stepper motors with N-encoders allowing rotation in the perpendicular axis parallel to do the earth surface. The developed frame structure and the control system are versatile and enable commercial photovoltaic panels to be mounted. They provide an alternative to expensive solutions offered by installing companies and are possible to be used in the conditions of a typical household.
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Nguyen, Thuc Boi Huyen, and Hoc Thang Nguyen. "Lightweight Panel for Building Construction Based on Honeycomb Paper Composite/Core-Fiberglass Composite/Face Materials." Nano Hybrids and Composites 32 (April 2021): 15–23. http://dx.doi.org/10.4028/www.scientific.net/nhc.32.15.
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Lightweight panels for indoor constructions are typically made from composite materials with honeycomb and corrugated structures. The reinforcements are used in this study, one is fiberglass and the other is cellulose fiber, which cellulose from recycled paper. Experimental results indicate that the weight of honeycomb paper panel is light, only 13.6% of fiberglass composite and 32.6% of plywood. The presence of honeycomb structure has a significant effect on mechanical behaviors of composite panels. Both flexural and compressive strengths increase by replacing corrugated structure into honeycomb structure. During compression, the compressive strength and modulus of two-layer honeycomb/core panel are higher than those of monolayer honeycomb/core. Particularly, the honeycomb cell-wall thickness has a little effect on the weight, but has an important effect on mechanical properties. These results can be created low cost and lightweight environment-friendly panels by using recycled paper honeycomb structure.
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Saputra, Pungky Dharma. "Identification of Precast Parapet Work Activities in Elevated Railway Construction." Applied Research on Civil Engineering and Environment (ARCEE) 2, no. 02 (February 28, 2021): 52–61. http://dx.doi.org/10.32722/arcee.v2i02.3416.
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Railway infrastructure development is very massive in Indonesia. Many projects have been constructing since 2013, such as the Mass Rapid Transit (MRT), Light Rail Transit (LRT), Double-Double Track (DDT), and High-Speed Rail (HSR). And all of these projects were design with elevated structures. When applying precast parapet panel technology in the MRT project elevated section, the contractor didn’t have a reference for precast parapet work activities. Hence, it required new planning for its construction and took time. The project sample of this research was MRT Jakarta CP 103 Project. There were three stages in this research starting from documentation analysis, expert judgment, and respondent survey. There were 5 bridge construction experts and 30 respondents which were professional engineers asked for their recommendations and opinions. Descriptive analysis was applied to know the percentage of opinions. This research focuses on identifying precast parapet activities in elevated railway construction project. There are 14 activities that had been identified in this research, namely preparation, position survey, adjustment material installation, precast parapet panel shifting from trailer to the top of deck slab, precast parapet panel distribution, precast parapet panel installation, rebar parapet installation for concrete stitch, sealing work, concrete casting, formwork dismantling, and finishing. These activities will be very useful for similar precast parapet works in a future project.
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McGavin, Robert L., Tony Dakin, and Jon Shanks. "Mass-timber construction in Australia: Is CLT the only answer?" BioResources 15, no. 3 (May 1, 2020): 4642–45. http://dx.doi.org/10.15376/biores.15.3.4642-4645.
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Wood-based mass-panels (WBMP) are emerging as an attractive construction product for large-scale residential and commercial construction. Australia is following the lead of Europe and North America with several recent projects being completed using predominately cross-laminated timber panels (CLT). These sawn timber-based panels offer some key advantages to the construction and sawmilling industry. However, veneer-based mass-panel (VBMP) systems could offer additional benefits including the more efficient use of the available forest resources to produce WBMPs that have equivalent to superior performance to CLT. Research to confirm the expected technical viability of veneer-based systems is required. VBMPs could provide a valuable contribution, alongside CLT, to the Australian timber products market.
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Majkut, Leszek. "Theoretical analysis of coincidence phenomenon and critical frequency determination of acoustic isolation panels." AUTOBUSY – Technika, Eksploatacja, Systemy Transportowe 19, no. 12 (December 31, 2018): 549–52. http://dx.doi.org/10.24136/atest.2018.449.
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Critical and coincidence frequencies of panels are important in studying their behaviour under acoustic excitation Expressions for critical and coincidence frequencies of thin and thick homogeous isotropic panels are derived. Characteristics of critical frequency values in function of panel thickness for five different construction materials are shown.
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Tang, W. C., and C. F. Ng. "Low Frequency Acoustic Performance of Close-Fitting Sandwich Panels." Building Acoustics 5, no. 3 (September 1998): 143–61. http://dx.doi.org/10.1177/1351010x9800500301.
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The experiment presented in this paper was to investigate and analyse the noise reduction at low frequency of porous material used to line the cavity between two panels of a double-panel structure. The effects of panel construction, fibreglass and cavity depth have also been studied. The structural-acoustic coupled system of a sandwich structure, backed by a rectangular acoustic cavity of rigid walls is discussed. It is found that the sound insulation of a combination of a stiff thick and a thin flexible plate panel, with air cavities and porous material in-between, is more effective than that of the conventional double-wall panel at low frequency.
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Volinets, Sviatoslav, Igor Razov, and Vladimir Filisuk. "Influence of the drop-beam on the floor slab panel in the construction of waiting rooms for railway stations." MATEC Web of Conferences 239 (2018): 01018. http://dx.doi.org/10.1051/matecconf/201823901018.
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The aim to improve the efficiency of wooden panel houses led to a significant improvement in the design of vertical enclosure structures. However, the structure of the floor slab panel was left unchanged. The authors of this work guessed that it is possible to reduce the cost of panel-wooden individual houses without reducing the strength characteristics by increasing the efficiency of the floor structure. With this purpose, drop-beams were introduced, which proved their effectiveness by trial and error method. To determine the influence of the drop-beam on the floor structure, this article presents the calculation of the structure in the first-order approximation according to Hooke's law, and a positive effect on the panel with a span of up to six meters was revealed. Additional research is needed for the panels spanning more than six meters.
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Ravinger, Jan, and Lubos Snirc. "Using Thermo-Steel Panels as Wall Bearing Structure." Applied Mechanics and Materials 769 (June 2015): 302–7. http://dx.doi.org/10.4028/www.scientific.net/amm.769.302.
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Thermo-steel panels compose from steel thin-walled profiles and polystyrene. They are used as wall construction elements. We must follow stability problems. Finite strip method (FSM) has been used. Special arrangement had to be done for investigation of stability of thermo-steel panels. In thermo-steel panels compression stresses are carried in thin-walled steel profiles only. It means that polystyrene enter into stiffness matrix but it does not have increment in geometric matrix. Numerical examples were oriented for investigation of thermo-steel panels with 145 and 250 mm thickness. Obtained results proved ability of thermo-steel panel to be used as wall panel for two storey building.
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Lee, Duk Gyoo. "Construction factors affecting as-built roughness of Portland cement concrete pavement construction." Canadian Journal of Civil Engineering 32, no. 5 (October 1, 2005): 906–12. http://dx.doi.org/10.1139/l05-044.
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This paper investigates the significant construction factors affecting the as-built roughness of Portland cement concrete (PCC) pavement. The panel data analysis uses as-built roughness measurements and related construction factors for reconstructed, replaced, and resurfaced PCC pavement projects in Wisconsin from 1998 to 2002. Construction factors are divided into two categories in this analysis: (1) pavement characteristics and (2) contractor's quality-based performance. The analysis utilizes the fixed effects and random effects modeling techniques to identify the significant variables in the model. The research shows that the fixed effects model, of all proposed models, provides the best estimate on the basis of Akaike's information criterion (AIC). The results indicate that pavement characteristics and contractor's quality-based past performance significantly affect as-built roughness. The findings also show that geographic locations are strongly significant.Key words: panel (longitudinal) data analysis, as-built roughness, international roughness index (IRI), Akaike's information criterion (AIC), construction factor, Portland cement concrete (PCC) pavement, highway construction.
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Soroush, Abbas, and Mohammad Soroush. "Parameters affecting the thickness of bentonite cake in cutoff wall construction: case study and physical modeling." Canadian Geotechnical Journal 42, no. 2 (April 1, 2005): 646–54. http://dx.doi.org/10.1139/t04-090.
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Concrete cutoff walls are usually constructed using a panel-by-panel technique in which primary panels are constructed with space between them and then secondary panels are constructed and inserted in the spaces. A small thickness of residual bentonite cake from the slurry used during excavation usually remains in the construction joints between adjacent primary and secondary panels. The thickness of such bentonite-filled joints should be minimized in terms of the performance of the cutoff wall in controlling seepage. This research experimentally evaluated the effects of a number of design and construction parameters on the thickness of the bentonite cake using data from a case study (the cutoff wall of Karkheh Dam). A physical model test was developed and a number of tests were conducted. The test results showed that parameters such as age of the primary panels, cement content of the slurry, quantity of additives in the slurry, and circulation versus noncirculation of the slurry are responsible for the thickness of the bentonite cake. The results are presented and analyzed.Key words: cutoff wall, plastic concrete, bentonite slurry, bentonite cake, physical model.
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Sanjaya, Wisnu A., and Rumiati Rosaline Tobing. "Modular Low-Cost Vertical Housing Benefit from Using Prefabricated Cross Laminated Timber Panel." ARTEKS : Jurnal Teknik Arsitektur 3, no. 2 (June 1, 2019): 199–214. http://dx.doi.org/10.30822/arteks.v3i2.70.
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Surabaya is the second most populated city in Indonesia. Its ever-growing population creates a problem with its limited number of low-cost housing. Seeing how slow the progress of constructing low cost vertical housing to meet the demands, it requires a faster and more efficient way. By using a modular construction method, this paper tries to analyze the benefit of using an alternate material such as prefabricated CLT (Cross Laminated Timber) panel. CLT panel shows a high potential in creating a better construction that is more environmentally friendly while still benefiting from a faster and lower cost by overall. Siwalankerto vertical housing was chosen due to its modular style of design and usage of material in its façade that is easier to simulate using a prefabricated material. Its location in Surabaya that is near Gresik where the manufactures capable manufacturing the prefabricated material also make it a great choice. This paper limits itself on construction efficiency and effectiveness simulated towards using prefabricated CLT panel and the effects of said material to the organization of rooms inside the building.
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Sanjaya, Wisnu A., and Rumiati R. Tobing. "RUMAH SUSUN MODULAR DENGAN PEMANFAATAN PAPAN PRAFABRIKASI CLT, KASUS : Rumah Susun Siwalankerto, Surabaya (Modular Low-Cost Vertical Housing Benefit from Using Prefabricated Cross Laminated Timber Panel)." ARTEKS Jurnal Teknik Arsitektur 3, no. 2 (June 1, 2019): 199. http://dx.doi.org/10.30822/artk.v3i2.168.
Full textAbstract:
Surabaya is the second most populated city in Indonesia. Its ever-growing population creates a problem with its limited number of low-cost housing. Seeing how slow the progress of constructing low cost vertical housing to meet the demands, it requires a faster and more efficient way. By using a modular construction method, this paper tries to analyze the benefit of using an alternate material such as prefabricated CLT (Cross Laminated Timber) panel. CLT panel shows a high potential in creating a better construction that is more environmentally friendly while still benefiting from a faster and lower cost by overall. Siwalankerto vertical housing was chosen due to its modular style of design and usage of material in its façade that is easier to simulate using a prefabricated material. Its location in Surabaya that is near Gresik where the manufactures capable manufacturing the prefabricated material also make it a great choice. This paper limits itself on construction efficiency and effectiveness simulated towards using prefabricated CLT panel and the effects of said material to the organization of rooms inside the building.
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Baran, Krzysztof, Antoni Różowicz, Henryk Wachta, Sebastian Różowicz, and Damian Mazur. "Thermal Analysis of the Factors Influencing Junction Temperature of LED Panel Sources." Energies 12, no. 20 (October 17, 2019): 3941. http://dx.doi.org/10.3390/en12203941.
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Limiting junction temperature Tj and maintaining its low value is crucial for the lifetime and reliability of semi-conductive light sources. Obtaining the lowest possible temperature of Tj is especially important in the case of LED panels, where in a short distance there are many light sources installed, between which there occurs mutual thermal coupling. The article presents results of simulation studies connected with the influence of construction and ambient factors that influence the value of junction temperature of exemplary LED panel sources. The influence of radiator’s construction, printed circuit boards, as well as the influence of ambient factors, such as ambient temperature Ta and air flow velocity v were subjected to the analysis. Numerical calculations were done in the FloEFD software of the Mentor Graphics company, which is based on computational fluid dynamics (CFD). For construction of the LED thermal panel model the optical efficiency ηo and real thermal resistance Rthj-c were determined in a laboratory for the applied light sources.
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Thomas, Daniel, Susan C. Mantell, Jane H. Davidson, Louise F. Goldberg, and John Carmody. "Analysis of Sandwich Panels for an Energy Efficient and Self-Supporting Residential Roof." Journal of Solar Energy Engineering 128, no. 3 (November 4, 2005): 338–48. http://dx.doi.org/10.1115/1.2210503.
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The structural and thermal feasibility of a self-supporting sandwich panel for energy efficient residential roof applications is assessed. The assessment is limited to symmetric sandwich panels comprising two face sheets and an insulating core. Feasible panel designs are presented for loading conditions, corresponding to southern and northern climates in the United States. The base case panel is 5.5m long for a nominal 4.6m horizontal span and an 8∕12 roof pitch. Face sheet materials considered are oriented strand board, steel, and fiber reinforced plastic. Core materials considered are expanded polystyrene, extruded polystyrene, polyurethane, and poly(vinyl-chloride) foams. A wide range of material options meet building code limits on deflection and weight and prevent face sheet fracture and buckling, and core shear failure. Panels are identified that have structural depths similar to conventional wood rafter construction. Shortening the overall panel length provides greater choice in the use of materials and decreases the required panel thickness. Suggestions for improved panel designs address uncertainty in the ability of the plastic core to withstand long term loading over the expected life of residential buildings.
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Shuvalov, Aleksandr, Igor Gorbunov, Mikhail Kovalev, and Adelia Faizova. "Experimental studies of compliance of vertical joints used in construction of high-rise panel buildings." MATEC Web of Conferences 196 (2018): 02049. http://dx.doi.org/10.1051/matecconf/201819602049.
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The results of the experimental studies of the vertical joint compliance used in the construction of the high-rise panel buildings are presented in this article. The vertical joints with various concrete grades, thickness of the panels, number and mutual bracing of the mating elements were used in this research conducted for LLC «LSR» in MGSU. The compliance ratios were measured on three steps: from the beginning of loading till the crack formation in one of the elements – I1; from the beginning of loading till maximal load – I2; from crack formation till maximal load – I3. Gained values can be used as basic data for structural engineering of panel high-rise buildings.