Journal articles: 'Slat construction'

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Pavlov, Pavel Ivanovich, Aleksandr Olegovich Vezirov, and Dmitriy Vadimovich Mukhin. "Optimization of construction and operating parameters of the combined handler of soil components." Agrarian Scientific Journal, no. 10 (October 27, 2020): 115–19. http://dx.doi.org/10.28983/asj.y2020i10pp115-119.

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The results of experimental studies of the operation of the chain-slat conveyor of the combined handler are presented. The regression equations and the corresponding three-dimensional graphical dependencies are obtained, describing the influence of design and operating parameters on the performance and the magnitude of the torque on the drive shaft. The values of design and operating parameters at which the value of productivity will have a maximum value have been determined experimentally.

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Tai, Hui Xin, Yu Lan Yang, and Li Shen. "Analysis on Wall Material and Construction Technology of Traditional House in Yubei Village." Applied Mechanics and Materials 174-177 (May 2012): 187–90. http://dx.doi.org/10.4028/www.scientific.net/amm.174-177.187.

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Through the investigation on the traditional houses of ancient village existing in Yubei village, this paper analyzed and classified the characteristics of the shapes and the technologies of the walls of traditional house and has described the factors that have influenced their generation and development. Basing on the construction technologies, from four different material of the wall such as boulder wall，brick wall，wooden board wall and plaster on bamboo slat wall, it has studied corresponding properties of materials, basic processes, construction principles, art forms and so on and it has researched on some methods and rules of construction of wall of traditional folk house in Yubei village.

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Kahandawa, Ravindu, Niluka Domingo, Gregory Chawynski, and S. R. Uma. "Factors impacting post-earthquake damage repair cost estimations." International Journal of Disaster Resilience in the Built Environment 12, no. 1 (June 4, 2020): 29–49. http://dx.doi.org/10.1108/ijdrbe-10-2019-0071.

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Purpose Reconstruction processes after an earthquake require estimating repair costs to decide on whether to repair or rebuild. This requires an accurate post-earthquake cost estimation tool. Currently, there are no post-earthquake loss estimation models to estimate repair costs accurately. There are loss assessment tools available, namely, HAZUS, performance assessment calculation tool (PACT), seismic performance and loss assessment tool (SLAT) and seismic performance prediction tool, which have not been specifically used for post-earthquake repair cost estimation. This paper aims to focus on identifying factors that need to be considered when upgrading these tools for post-earthquake repair cost estimation. Design/methodology/approach The research was conducted as an exploratory study using a literature review, document analysis of the PACT, SLAT and HAZUS software and 18 semi-structured interviews. Findings The research identified information sources available for estimation and factors to be considered when developing estimations based on the information sources. Research limitations/implications The data was collected from professionals who were involved mostly in housing repair work in New Zealand. Therefore, impact of these repair work factors might vary in other forms of structures such as civil structures include bridges and the country as a result of varying construction details and standards. Practical implications The identified factors will be used to improve the loss estimation tools are such as PACT and HAZUS, as well as to develop a post-earthquake repair cost estimation tool. Originality/value Currently, the identified factors impacting post-earthquake damage repair cost estimations are not considered in loss estimation tools. Factors identified in this research will help to develop a more accurate cost estimation tool for post-earthquake repair work.

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Hu, Jia, and Svetlana Olbina. "Illuminance-based slat angle selection model for automated control of split blinds." Building and Environment 46, no. 3 (March 2011): 786–96. http://dx.doi.org/10.1016/j.buildenv.2010.10.013.

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TANIGUCHI, Tomoko, Yukio TORII, Eiji SAKUMA, Yoshihiro KURAMOTO, Michiya SUZUKI, and Toshie IWATA. "COMPARISON STUDY ON EFFECT OF SLAT SHAPE AND OPTICAL PROPERTY OF GRADATION BLIND ON REDUCTION OF ELECTRIC CONSUMPTION FOR AMBIENT LIGHTING." AIJ Journal of Technology and Design 22, no. 50 (2016): 159–64. http://dx.doi.org/10.3130/aijt.22.159.

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Sun, Yanyi, Xin Liu, Yang Ming, Xiao Liu, Daniel Mahon, Robin Wilson, Hao Liu, Philip Eames, and Yupeng Wu. "Energy and daylight performance of a smart window: Window integrated with thermotropic parallel slat-transparent insulation material." Applied Energy 293 (July 2021): 116826. http://dx.doi.org/10.1016/j.apenergy.2021.116826.

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Sun, Yanyi, Yupeng Wu, Robin Wilson, and Shuyue Sun. "Thermal evaluation of a double glazing façade system with integrated Parallel Slat Transparent Insulation Material (PS-TIM)." Building and Environment 105 (August 2016): 69–81. http://dx.doi.org/10.1016/j.buildenv.2016.05.004.

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Kahandawa, Ravindu K. A. V. D., Niluka D. Domingo, Gregory Chawynski, and S. R. Uma. "Earthquake Damage Repair Loss Estimation in New Zealand: What Other Variables Are Essential Based on Experts’ Opinions?" Buildings 11, no. 9 (August 28, 2021): 385. http://dx.doi.org/10.3390/buildings11090385.

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Major earthquakes can cause extensive damage to buildings and alter both the natural and built environments. Accurately estimating the financial impact from these events is complex, and the damage is not always visible to the naked eye. PACT, SLAT, and HAZUS are some of the computer-based tools designed to predict probable damage before an earthquake. However, there are no identifiable models built for post-earthquake use. This paper focuses on verifying the significance and usage of variables that specifically need to be considered for the post-earthquake cost estimation of earthquake damage repair work (CEEDRW). The research was conducted using a questionnaire survey involving 92 participants who have experience in cost estimating earthquake damage repair work in New Zealand. The Weighted Average, Relative Importance Index (RII), and Exploratory Factor Analysis were used to analyse the data. The research verified that eleven major variables that are significant to the CEEDRW and should be incorporated to cost estimation models. Verified variables can be used to develop a post-earthquake repair cost estimation tool and can be used to improve the pre-earthquake loss prediction tools.

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Kim, Dongsu, Sam J. Cox, Heejin Cho, and Jongho Yoon. "Comparative investigation on building energy performance of double skin façade (DSF) with interior or exterior slat blinds." Journal of Building Engineering 20 (November 2018): 411–23. http://dx.doi.org/10.1016/j.jobe.2018.08.012.

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Донець, Олександр Дмитрович, Олександр Захарович Двейрін, Євген Тимофійович Василевський, Сергій Андрійович Філь, Олександр Григорович Гребеніков, and Андрій Михайлович Гуменний. "ПРОЕКТНО-КОНСТРУКТОРСЬКІ ОСОБЛИВОСТІ ПЛАНЕРУ РЕГІОНАЛЬНОГО ПАСАЖИРСЬКОГО ЛІТАКА." Open Information and Computer Integrated Technologies, no. 83 (May 23, 2019): 4–27. http://dx.doi.org/10.32620/oikit.2019.83.01.

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The design features of the regional passenger aircraft airframe, which were introduced at the stages of developing the An-148/An-158 aircraft family, are described. The design and construction works on the airframe, which were aimed at the implementation of the airframe design concept, based on the principle of a safely damaged structure, are given. The An-148/An-158 airplanes were designed using modern computer-aided design systems. The work performed provides aeroelastic stability for all configurations and all design conditions. When creating a family of regional passenger airplanes, a number of new design and technological solutions were applied to the airframe design (fuselage, wing, pylons of powerplants and tail assembly), in particular: the scope of composite materials (CM) application was expanded, including the fuselage beamstructural elements; auxiliary power unit compartment is made entirely of CM; fastening the skin to the fuselage frame is made using rivets with a compensator, which ensures high quality of the external surface and eliminates the need for milling the heads of rivets after their installation; the fuselage canopy frame was made by welding, which significantly simplified the assembly technology; a two-support connected hitch scheme and control of extension of the slat sections with the use of involute gearing in the slat extensionretraction drives on the hinge mechanisms in the form of a pair of gears – a gear rack; developed a rational design of the wing box with a theoretical surface of double curvature, high adaptability and operability with survivability and high lifetime; a seven-part flap extension-retraction mechanism has been developed, which provides a predetermined flap advancement path; a combined flap design with a metal torsion box part, nose and tail part and a deflector made of CM; a molybdenum coating was applied, which increased the wear resistance of high-loaded parts from titanium alloys by more than 20 times; a monolithic integral design of interceptors and ailerons from CM was developed; a rational design of a pylon of a hinge plate of a mid-flight power plant has been developed with optimal rigidity characteristics to achieve given characteristics of flutter safety, with extensive use of composite materials in the tail and nose sections; the design of caps from pressed semi-finished products with two tips has been developed; an integrated design of the rudder and elevator made of composite materials has been developed.

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Sun, Yanyi, Robin Wilson, Hao Liu, and Yupeng Wu. "Numerical investigation of a smart window system with thermotropic Parallel Slat Transparent Insulation Material for building energy conservation and daylight autonomy." Building and Environment 203 (October 2021): 108048. http://dx.doi.org/10.1016/j.buildenv.2021.108048.

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Gáspár, László, and Zsolt Bencze. "Blast furnace slag in road construction and maintenance." Dorogi i mosti 2021, no. 23 (March 25, 2021): 53–59. http://dx.doi.org/10.36100/dorogimosti2021.23.053.

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Introduction. There is a global trend to increase the sustainability of road construction and maintenance technologies. The growing use of various industrial by-products as economical and eco-friendly construction and maintenance techniques can be observed in many countries.Problem Statement. The utilization of various forms of blast furnace slag in the road sector can be cost effective, however, several special technological measures have to be taken.PurposePresenting best practices for the use of blast furnace slag in road construction and maintenance techniques based on Hungarian and other decade-long experiences.Materials and Methods. The main types investigated are air-cooled blast furnace slag, expanded or foamed slag, pelletized slag, and granulated blast furnace slag. The utilization areas in road sector: asphalt layers, surface treatments, rut repair, hydraulically bound pavement layers, unbound base layers, frost protection layer, subgrade, cement production.Results. Presenting best practices for the use of blast furnace slag in road construction and maintenance can be beneficial for the experts of countries with limited experience in the field. Keywords: blast furnace slag, industrial by-products, road construction, road maintenance, environmental protection

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Ouahrani, Djamel, and Albert Al Touma. "Selection of slat separation-to-width ratio of brise-soleil shading considering energy savings, CO2 emissions and visual comfort – a case study in Qatar." Energy and Buildings 165 (April 2018): 440–50. http://dx.doi.org/10.1016/j.enbuild.2017.12.053.

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D. Huseyn Mammadov, Ph, and Musa Gadirov. "Application of Slags from Thermal Power Station as an Effective Initial Material in the Production of Artificial Porous Filler." International Journal of Engineering & Technology 7, no. 3.14 (July 25, 2018): 461. http://dx.doi.org/10.14419/ijet.v7i3.14.17043.

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The article is devoted to obtaining an artificial porous filler from industrial wastes, in particular from granulated slags, or ash-slag mixtures from Thermal Power Station. The developed technology provides the opportunity to expand the raw material base of artificial porous filler production for lightweight concrete, and it allows us to solve the problem of involving secondary resources in the production of construction materials and protection of the environment from pollution.According to the results of research, the intervals of the bloating temperature have been determined, the technology of obtaining an artificial porous filler from slag and ash-slag mixtures from Thermal Power Station has been developed, and the mainphysical-mechanical properties of the filler obtained have been studied. It was established that the obtained artificial porous filler meets the requirements of the current standard in its physical-mechanical properties. It was found that on the basis of them, heat-insulating, heat-insulating-constructional and structural lightweight concrete for enclosing and bearing constructions have been obtained.

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Robertson, Paul. "The Polemic of Individualized Appellation in Late Antiquity." Studies in Late Antiquity 2, no. 2 (2018): 180–214. http://dx.doi.org/10.1525/sla.2018.2.2.180.

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This article describes rhetorical innovations in late antique Christian polemic around the construction of orthodoxy/heresy and Christianity more broadly. Late antique Christian polemicists label groups as heretical by using their founders' names as eponymous proxies for an entire group and set of ideas: Marcionism/ites, Valentinianism/ites, and so forth. This type of group construction, which I term the polemic of individualized appellation due to the pejorative labeling of a group after an individual founder, is an intentional and often artificial type of elite, literary polemic put to service in the wider creative mythmaking and boundary/identity construction by heresiologists such as Justin, Irenaeus, Tertullian, Eusebius, and Epiphanius. In identifying both precursor ingredients in various ancient Mediterranean comparanda and novel developments in the Christian heresiologists' discourse, I also engage with recent scholarship on heresy, orthodoxy, and identity constructions in Late Antiquity. I explain why the polemic of individualized appellation was especially effective in constructing difference, its role in this particular late antique context, and its function in effacing apparent similarities in widespread practices and beliefs. I conclude with a methodological discussion, arguing that scholars in religion and history should reject their sources' categories of group identity construction due to their inherent bias.

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Mercader, M. P., M. Marrero, J. Solís, M. V. Montes, and A. Ramírez. "Cuantificación de los recursos materiales consumidos en la ejecución de la cimentación." Informes de la Construcción 62, no. 517 (March 8, 2010): 125–32. http://dx.doi.org/10.3989/ic.09.000.

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Кужахметова, Э., and El'vira Kuzhahmetova. "CONSTRUCTIVE SOLUTIONS OF VANT LOCATION IN CYLINDRO-PLATE-VANT (CPV) COATING OF BUILDING (CONSTRUCTION)." Bulletin of Belgorod State Technological University named after. V. G. Shukhov 4, no. 5 (April 19, 2019): 77–89. http://dx.doi.org/10.34031/article_5ce292ca24bc23.91006970.

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The article considers the calculation and spatial models of buildings with cylindrical-slab-guy covering and various constructive arrangement of the guy: radial, fan, parallel-transverse, parallel-longitudinal and longitudinal-transverse (cross). The calculations have been performed using the FEMAP / NX NASTRAN software package (PC), taking into account the geometric nonlinearity of the deformation. The novelty of the research is a combined design of cylindrical-slab-guy covering. This is a complex of different types of coverings, overlapping large spans of buildings: the cylindrical shell of zero Gaussian curvature and the flat slab are located in the middle part; symmetric guy coverings are located at the edges. The aim of the study is to assess the effect of guy system with various arrangement of guys on the stress-strain condition of cylindrical-slab-guy covering. The objective of the study is to provide a comparative analysis of the stress-strain condition of complex design of cylindrical-slab-guy covering and to select the optimal structural solution of the guy system under the same conditions (geometric parameters of the building, external loads and boundary fixings)

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Gailienė, Inesa, and Vaidas Ramūnas. "Usage Analysis and Evaluation of Slab Track Constructions." Baltic Journal of Road and Bridge Engineering 14, no. 3 (September 26, 2019): 285–303. http://dx.doi.org/10.7250/bjrbe.2019-14.444.

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Slab track is one of the technical possibilities to achieve the following goals: increase the conductivity of a railway, increase the highest permitted train speed, reduce the cost of railway maintenance, and increase the railway lifetime. However, the abundance of slab road constructions that occurred during the development stages presents a challenge to railway operators, designers and researchers, about the selection of a right slab track and establishing requirements to it. The present article analyses the ballastless track constructions that are used in the European Union and other world countries. The market is analysed, and a comparative evaluation of the ballastless track construction is carried out, based on the quality and price, by rating and providing the evaluation of usability and recommendations.

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Buchta, Vojtěch, and Petr Mynarčík. "Experimental Testing of Fiberconcrete Foundation Slab Model." Applied Mechanics and Materials 501-504 (January 2014): 291–94. http://dx.doi.org/10.4028/www.scientific.net/amm.501-504.291.

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Experimental measurements described in this paper are a continuation of research focused on interaction of foundation concrete structures and subsoil. This problematic has been researching on the Faculty of Civil Engineering VSB - Technical University of Ostrava for long time. Is it one of the main research directions at the Department of Constructions. In 2013, the research was focused on the analysis of fiberconcrete foundation structures. Especially, It was tested a foundation slab model of the National Supercomputing Center IT4 Innovations. This significant construction is realized in campus of VŠB - Technical University of Ostrava right now. It was a big opportunity to compare a model test results with measurements from real construction.

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Lis, Teresa, Krzysztof Nowacki, and Tomasz Małysa. "Utilization of Metallurgical Waste in Non-Metallurgical Industry." Solid State Phenomena 212 (December 2013): 195–200. http://dx.doi.org/10.4028/www.scientific.net/ssp.212.195.

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The iron and steel industry is one of the largest sources of waste materials, primarily in the form of steelmaking dusts, sludge and slag. Those wastes are a serious threat to the environment. Main precondition for the protection of natural resources in the environment is to recover raw material and energy from waste. The use of waste as raw materials does not involve the storage and creates the possibility of closure of the existing landfill. The article presented utilization of same metallurgical waste containing 4-20 wt. % zinc in non-metallurgical industry. Performed chemical analyzes of pollutants contained in waste tested (dusts, sludge and slag) and in manufactured products (cement bricks, ceramic construction materials, colored glass products and slag for road construction). Aqueous extracts analysis results were compared with the maximum values for the sewage entering into water and soil. The performed research proves that proposed technologies (production of cement clinker, construction bricks, hollow glass, decorated glass) do not pose threat to environment. Harmful impurities are eluted from the products – clinker, constructions bricks and slag after the recovery of zinc recovery. Proposed technologies substitution of primary raw materials recyclable materials can reduce environmental degradation.

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TEKİN, İlker. "https://www.acapublishing.com/dosyalar/baski/CEBACOM_2021_196.pdf." CEBACOM Vol:1 Issue 3 1, no. 3 (April 21, 2021): 16–22. http://dx.doi.org/10.36937/cebacom.2020.003.004.

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The compressive strength of concrete could be evaluated during and after construction because of a weakness in a reinforced concrete structural member appeared. Quality control of concrete in existing and new constructions can be evaluated by several methods. If the compressive strength did not comply with the design requirements, core samples from the low strength structural members are usually taken to evaluate the structural capability. In the construction sites, compressive strengths of columns and shear walls are the most important. Also, the preparing of quite simple reports for the quality control analyses of a construction is common especially in slab and beam analyses. Hence, in this paper, a new sightseeing assessment is recommended to this analysis. In this study, in-situ non-destructive and destructive investigations in newly constructed building slabs and beams were performed because of the weakness of concrete. With this scope, non-destructive and core sampling examinations were performed on slabs and beams according to the TS EN 13791. Building was constructed by using ready-mixed concrete with CEM I 42.5R and CEM II/B-S 42.5N type cement. As a result of this study, it is thought that the TS EN 13791 contains limited information for the evaluation of newly constructed building for concrete because of its varied ingredients. Compressive strength of concrete produced with granulated blast furnace slag like pozzolanic materials instead of cement needs more time to reach required strength if it is not designed for early strength.

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Vavro, Martin, Kamil Souček, Tomáš Daněk, and Lubomír Staš. "Selected Non-Destructive Methods Suitable for Evaluation of Roofing Slate." Advanced Materials Research 923 (April 2014): 63–70. http://dx.doi.org/10.4028/www.scientific.net/amr.923.63.

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Roofing slate is a traditional natural material for roofing and other construction applications in various types of buildings. The paper deals with both traditional methods of mineralogical-petrographic analysis as well as completely new methods (X-ray CT) rendering fast and reliable determination of qualitative parameters and potential slate durability in building constructions. A mutual combination of the methods represents a rapid, effective and modern alternative to lengthy laboratory tests to determine physical-mechanical properties of newly used roofing, especially in historical buildings.

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Luhchenko, Olena, Ali Nazhem, and Dmitriy Oreshkin. "Peculiarities of calculation and design of slabs on elastic cushion reinforced with non-metallic composite reinforcement." MATEC Web of Conferences 230 (2018): 02017. http://dx.doi.org/10.1051/matecconf/201823002017.

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Fiber-glass composite reinforcement becomes increasingly popular in different spheres of industry and public economy. Unique technology of the reinforcement production allows receiving the high-quality construction material which complies with modern requirements of liability, quality and safety. Pavlivska Square in Kharkiv may serve as an example of efficient application of non-metallic composite reinforcement for the reinforcement of slabs on elastic cushion during the construction of which the composite grids SKS-100/100 manufactured by Ekipage Technological Group were used as the reinforcement units. Pavement slab reinforcement scheme (including the working draft) was elaborated by the specialists of the Building Constructions Department of O.M. Beketov National University of Urban Economy. The arrangement of the pavement slab of Pavlivska Square was conducted within the short period of time. Due to this, for the purpose of mounting the two-layer reinforcing cage of the slab, the workers of Ekipage Technological Group elaborated a new mounting method which allows the essential reduction of the performance time.

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Petr, Junga, Vondráčková Terezie, and Mareček Jan. "Conceptual design and evaluation of the alternative construction of lightweight hall building with polygonal ground plan and canvas roofing." Research in Agricultural Engineering 64, No. 1 (March 27, 2018): 20–25. http://dx.doi.org/10.17221/2/2017-rae.

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The paper presents the results of a conceptual study of lightweight wooden construction hall building with polygonal ground plan, suitable for agriculture. It comprises evaluation of chosen technical and functional characteristics and possibilities for animal production. The results of the study confirm advantages (mainly lower material and costs demandingness, environmentally friendliness, light-weight construction, fast assembly operations) and disadvantages (mainly larger range of groundwork, higher demandingness on roof structure, foundation of slab constructions and anchoring of vertical bearing constructions). Values of radial tensile stress at an interval of 9.0 to 21.0 MPa and tangential tensile stress at an interval of 1.4 to 16.0 MPa were calculated on vertical load 100 kN at the top of the construction). The construction makes possible to achieve a span as far as 60 m with effective canvas strain at large radius curvature from 80 m to 100 m.

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Vázquez Rafionich, E., and M. Barra. "Reactividad y expansión de las escorias de acería de horno de arco eléctrico en relación con sus aplicaciones en la construcción." Materiales de Construcción 51, no. 263-264 (December 30, 2001): 137–48. http://dx.doi.org/10.3989/mc.2001.v51.i263-264.359.

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Márkus, Róbert, and Oszkár Grega. "The EAF Slag as Construction Material." Materials Science Forum 537-538 (February 2007): 671–78. http://dx.doi.org/10.4028/www.scientific.net/msf.537-538.671.

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The metallurgical slag is a normal building material in Europe but not in Hungary. I prove by my own researches that the electric arc furnace slag isn’t harmful to the nature especially the ground water and their physical aspects are similar to the natural rocks. It means that we can use slag to replace them to save our environment and to clear away the old slag dumps.

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Osuská, Lucia, Milan Meruňka, and Rudolf Hela. "The Influence of Finely Ground Limestone in the Design of Concrete for White Boxes Regarding the Suppression of Shrinkage." Solid State Phenomena 321 (July 26, 2021): 119–24. http://dx.doi.org/10.4028/www.scientific.net/ssp.321.119.

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For concrete constructions built as underground spaces, basements or cellars, it is necessary for these constructions to be able to resist the influence of groundwater pressure that could disrupt the compactness of the entire construction by its action. For this reason, constructions of so-called white boxes are often used. White boxes are concrete constructions whose main capability is high water impermeability, exhibiting at the same time minimal volume changes. These properties could be accomplished by a series of several technological precautions, one of which is the composition of the concrete mixture itself. The aim of this paper is to evaluate the influence of finely ground limestone and the latent hydraulic addition of finely ground blast furnace slag on the properties of concrete composite such as water impermeability, water absorption, or volume changes. These properties are vital for the construction of white boxes. In this paper, the suitability of the mutual combination of active and internal additive will also be evaluated.

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Teijón-López-Zuazo, Evelio, Ángel Vega-Zamanillo, Miguel Ángel Calzada-Pérez, and Luis Damián Ramos-Pereira. "Modification Tests to Optimize Highway Construction in Crown of Slate Random Embankments with Compaction Quality Control." Materials 13, no. 5 (March 4, 2020): 1139. http://dx.doi.org/10.3390/ma13051139.

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The compaction control of random fills has developed very little due to the limitations of particle sizes, with methods usually using a simple procedural control. In order to develop new quality control procedures for random slate filling, the necessary field work and laboratory tests were carried out. New test procedures for wheel-tracking or settlement tests have been successfully investigated. A total of 4500 in situ measurements of density and 580 topographic settlements, 960 wheel-tracking trolley tests and more than 130 slab rolling tests have been determined. An analysis of variance (ANOVA) has been carried out, obtaining correlations between tests in order to replace the deductibles. The variables that were used to analyze variance were the average lot density, the average settlement between last and first roller pass, the average wheel impression after test carriage, the first vertical modulus of the plate bearing test (PLT), the second vertical modulus of the PLT and the relation between second and first modulus of the PLT. The research proposes a new procedure for the quality control of the compaction of the randomized slate filling used in the crown area.

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Tazawa, Yoshihiko. "Construction of slant immersions. II." Bulletin of the Belgian Mathematical Society - Simon Stevin 1, no. 4 (1994): 569–76. http://dx.doi.org/10.36045/bbms/1103408610.

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Manso, Juan M., Milagros Losañez, Juan A. Polanco, and Javier J. Gonzalez. "Ladle Furnace Slag in Construction." Journal of Materials in Civil Engineering 17, no. 5 (October 2005): 513–18. http://dx.doi.org/10.1061/(asce)0899-1561(2005)17:5(513).

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Paik, Inkwan, and Seunguk Na. "Comparison of Environmental Impact of Three Different Slab Systems for Life Cycle Assessment of a Commercial Building in South Korea." Applied Sciences 10, no. 20 (October 17, 2020): 7278. http://dx.doi.org/10.3390/app10207278.

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The environmental impacts of the construction stage should be considered since a large amount of building materials are used to construct a building at this stage. Studies on the improvement of construction techniques or the application of newly developed construction methods for reducing the environmental impacts are relatively scant compared to other topics of studies. This study aimed to assess and compare the environmental impacts of the ordinary solid slab, the flat plate slab and the voided slab system during the construction phase. A process-based quantitative model was adopted to evaluate the environmental impacts and the comparative results were analysed to demonstrate the significant characteristics of the environmental impacts of the construction of slab in a building. The assessment results show that the environmental impacts from the ordinary solid slab are the highest and the voided slab system is the lowest among three slab systems. As the slab system of the studied building was replaced, it was shown that the environmental impact indicators showed the decreased tendency. Based on the results of environmental impact reduction from the ordinary solid slab, the flat plate slab and the voided slab system, the voided slab system would have the least environmental impact in all indicators.

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Kuddus, Mir Abdul, and Partha Pritom Dey. "Cost Analysis of RCC, Steel and Composite Multi-Storied Car Parking Subjected to High Wind Exposure in Bangladesh." Civil Engineering Journal 3, no. 2 (February 28, 2017): 95–104. http://dx.doi.org/10.28991/cej-2017-00000076.

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Steel-concrete composite constructions in Bangladesh are nowadays very popular owing to their advantages over conventional concrete and steel constructions. Concrete structures are massive and allot more seismic weight and less deflection whereas steel structures instruct more deflections and ductility to the structure, which is beneficial in resisting earthquake and wind forces. Composite construction combines the better properties of both steel and concrete along with lesser cost, speedy construction, fire protection etc. The objective of this study was to analysis and design ground floor plus 19 storied R.C.C, Steel and Composite (steel-concrete) multi-storied parking structure’s frame of same plan using ETABS 2013 software and compare their structural parameters with estimated cost for required material. All frames are designed for same gravity and dynamic loadings. The RCC deck-slab is used in steel and composite frame. Beam and column sections are made of RCC, steel or steel-concrete composite sections. The composite construction option provided about 25 % and 18% less cost when compared to RCC and steel structure, respectively. Comparative study concludes that the composite frames are best suited among all the three types of constructions in terms of material cost and benefit added with better structural behaviour.

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Kieslich, Hubertus, and Klaus Holschemacher. "Composite Constructions of Timber and High-Performance Concrete." Advanced Materials Research 133-134 (October 2010): 1171–76. http://dx.doi.org/10.4028/www.scientific.net/amr.133-134.1171.

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Currently Timber-Concrete Composite (TCC) Constructions are often applied for strengthening existing timber beam slabs. The load bearing capacity of the composite construction is primarily affected by the material properties of the timber beam and the concrete slab. But the type of bond between both parts is also of high importance. The concrete slab has to perform several tasks, not only in load carrying direction of the ceiling but also perpendicular to the direction of span or for stiffening the whole building. These tasks will be pointed out in this paper. Furthermore the working process (easy workable mixture and exchange of conventional reinforcement) and the dead load of the construction are of particular interest in the field of redevelopment. Several innovative concretes have been verified for the use in TCC constructions. Regarding their fresh and hardened concrete properties, they all can be described as High Performance Concretes (HPC). In this paper Self Compacting Concrete (SCC), Fiber Reinforced Concrete (FRC), Structural Lightweight Concrete (SLWC), High Strength Concrete (HSC) or combinations of them will be focused. Especially the advantages but also the disadvantages of innovative concretes for the use in TCC will be presented as well as the results of some experimental investigations.

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Delatte, Norbert J., David W. Fowler, and B. Frank McCullough. "Full-Scale Test of High Early Strength Bonded Concrete Overlay Design and Construction Methods." Transportation Research Record: Journal of the Transportation Research Board 1544, no. 1 (January 1996): 9–16. http://dx.doi.org/10.1177/0361198196154400102.

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For rehabilitation of concrete pavements, resurfacing with a bonded concrete overlay (BCO) may provide significantly longer life and reduced maintenance costs. Two important issues are bonding and rapid reopening of resurfaced sections. The project objectives were to determine a method of constructing a BCO under extreme weather conditions in El Paso, Texas, that would ensure early opening to traffic and achieve design requirements for long-term performance, and to investigate methods of detecting and mapping delaminations nondestructively. A BCO test slab that was designed and constructed for a full-scale test of feasible design and construction alternatives is reported. The month of June was selected for the test because severe environmental conditions were expected. The experimental variables encompassed in eight test sections were reinforcement of concrete (plain, polypropylene fiber–reinforced, and steel fiber–reinforced), use of shear connectors (nails and anchors), reinforcement, surface preparation, and day or night construction. A weather station was used to record air temperature, relative humidity, and wind speed. By combining these data with concrete temperatures, evaporation rates could be calculated. Several nondestructive testing methods were used to attempt to detect and map delaminations. The results developed from the test are presented in terms of observations during construction, weather and slab temperatures, coring and pull-off testing, delamination detection, cracking, and slab loading. Recommendations are made for construction and quality control of BCOs for early opening to traffic.

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LaFave, James M., and James K. Wight. "Reinforced Concrete Wide-Beam Construction vs. Conventional Construction: Resistance to Lateral Earthquake Loads." Earthquake Spectra 17, no. 3 (August 2001): 479–505. http://dx.doi.org/10.1193/1.1586185.

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Experiments and analyses were conducted to address concerns about performance of reinforced concrete connections with shallow, wide beams subjected to lateral earthquake loading and to compare behavior of wide beam connections to that of conventional connections. Two wide beam-column-slab connections and one conventional beam-column-slab connection were subjected to cycles of reversing lateral displacements up to 5% drift. The conventional beam and wide beam connections exhibited similar overall load-displacement behavior, with similar beam plastic hinge development. The wide beam connections dissipated almost as much energy as the conventional beam connection and had greater slab participation and less joint and beam shear cracking than the conventional beam connection. Experimentally determined wide beam connection stiffness was closer to the conventional beam connection stiffness than had been predicted. Refined models were developed, with features such as rigid end offsets for wide beam connections, to better represent observed behavior. Nonlinear models were also developed that accurately captured differences in energy dissipation as well as stiffness.

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Krayushkina, Kateryna, Olegas Prentkovskis, Andrii Bieliatynskyi, and Raimundas Junevičius. "USE OF STEEL SLAGS IN AUTOMOBILE ROAD CONSTRUCTION." TRANSPORT 27, no. 2 (June 26, 2012): 129–37. http://dx.doi.org/10.3846/16484142.2012.690093.

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Building and, especially, reconstruction and repairs of highways, call for the development of stone materials manufacturing industry. Increasing need for stone materials may be satisfied by a wide use of industrial waste and secondary resources. In road building, slag of ferrous and nonferrous metallurgy is one of the most popular wastes which are increasingly widespread with every year. Such slag is a valuable raw material for preparation of macadam materials and mineral binders serving as a base for asphalt concrete mixtures and manufacturing of cement emulsions, which are widely used in road paving. The research focused on the use of different types of slag in road construction in Ukraine. Possibilities of using crushed rock and sand as recrement slag of different production for preparation of asphalt concrete and cement mixtures to be used for road-base was studied, as well as the use of slag materials for construction of lower category roads. In the given work, the opportunity to recycle electric furnace steel-smelting slag for preparation of asphalt concrete mixtures was defined.

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Na and Paik. "Reducing Greenhouse Gas Emissions and Costs with the Alternative Structural System for Slab: A Comparative Analysis of South Korea Cases." Sustainability 11, no. 19 (September 24, 2019): 5238. http://dx.doi.org/10.3390/su11195238.

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The construction industry is one of the main contributors to the production of large volumes of greenhouse gases, since it consumes a large quantity of energy and construction materials. The purpose of this research is to assess the environmental impacts and economic efficiency of the voided slab system compared to the ordinary reinforced concrete slab. A life cycle assessment (LCA) and the total cost of construction were calculated to evaluate the performance of both slab systems. Additionally, the total costs of construction for both cases were determined based on the unit price of the building materials. The results of this study indicate that manufacturing building materials contributes most to the total GHG emissions where concrete is responsible for nearly 1/2 of all emissions. Additionally, forms are the second largest contributor of the total GHG emissions and account for nearly 40% and 15% of emissions for the ordinary reinforced concrete slab and the voided slab system, respectively. This study verified that the voided slab system indicated better environmental performance than the ordinary reinforced concrete slab. The total GHG emissions of the ordinary reinforced concrete slab were 256,599 and 13,989 kg·CO2·eq, for concrete and forms, respectively. Additionally, the total GHG emissions of the voided slab system were 224,945 and 12,211 kg·CO2·eq. The reduction of GHG emissions from Case 1 for aboveground floors and Case 2 for underground parking was 12.3% and 12.7% over the ordinary reinforced concrete slab, respectively. The economic efficiency of the ordinary reinforced concrete slab and the voided slab system were assessed by comparison of the total costs of construction. This showed a total cost reduction of 12.3% and 11.2% for the case of applying the voided slab system to the aboveground floors and underground parking, respectively. Thus, replacing the ordinary reinforced concrete slab by the voided slab system in the aboveground floors and the underground would make it possible to decrease not only the emissions of GHG, but also the cost of construction.

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Qian, Kun, Tian Xia, Jie Zhang, and Quan Yuan. "The Application of Straw Concrete Wall Board in Constructional Engineering." Applied Mechanics and Materials 438-439 (October 2013): 1607–11. http://dx.doi.org/10.4028/www.scientific.net/amm.438-439.1607.

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Constructional engineering was always faced with the threaten of earthquake and the problem of large energy consumption. As a new type of green building material, straw concrete has better ductility than normal concrete. In the straw concrete multi-ribbed slab structure, as the filling material of wall board, straw concrete improved the energy dissipation and deformability of wall board. When the load was applied, the filling blocks, grid frame and outer frame in straw concrete wall board work cooperatively, have good mechanical properties. The straw concrete wall board has advantages that light, high strength, energy conservation and seismic resistance. Considering the effect of different components in straw concrete wall board, this paper proposes the formula of vertical bearing capacity of straw concrete wall board to provide the basis for engineering application. The construction of straw concrete multi-ribbed slab structure include three processes that steel bar bind, blocks prefabrication and integral pouring, which fits for field fabrication in the building construction site.

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Lestari, Sachiko Mawaddah, and Muhammad Fauzan. "Analysis of the Implementation of the South Sumatra Transit Light Rail Slab Track." Jurnal Perkeretaapian Indonesia 1, no. 2 (November 20, 2017): 151–58. http://dx.doi.org/10.37367/jpi.v1i2.42.

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Transportation has an important role in supporting economic growth, development and unifying the territory of the Unitary Republic of Indonesia, in order to improve transportation services in supporting development in South Sumatra Province, and supporting the implementation of the 2018 Asian Games, it is necessary to accelerate the implementation of Light Rail Transit in the province of South Sumatra. This is related to the Republic of Indonesia's Presidential Regulation Number 116 of 2015 concerning the Acceleration of the Operation of Light Rail Transit in South Sumatra Province. At the railroad track in Indonesia there is currently no railroad that has operated using the slab track construction but at this time the Government of Indonesia is conducting railroad construction in Indonesia on a national scale. In the construction of the South Sumatra LRT (Light Rail Transit) is a power railroad construction electricity that is in the process of development that will use modern railroad construction that is using slab track construction. In this very happy opportunity the writer got the opportunity to do research at the South Sumatra LRT Work Unit because the South Sumatra LRT is under construction. South Sumatra LRT uses elevated road construction using slab track construction. At present the South Sumatra LRT is the first project to undertake slab track construction in Indonesia. In fact, there is no railroad in Indonesia that operates using slab track construction.

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Na, Seunguk, Seok-Jae Heo, and Sehee Han. "Construction Waste Reduction through Application of Different Structural Systems for the Slab in a Commercial Building: A South Korean Case." Applied Sciences 11, no. 13 (June 24, 2021): 5870. http://dx.doi.org/10.3390/app11135870.

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Construction waste generation along with the extensive consumption of natural resources has propelled researchers to investigate effective measures for minimising the waste. While several studies have shown that the structural design would be an influencing factor on the carbon dioxide emissions of a building, there is a lack of studies to corroborate the effect of different structural systems to generate waste during the construction stage. This article seeks to bridge some of the knowledge gaps regarding the waste generation from different structural systems during the construction phase in a building project in South Korea and demonstrate its potential for waste reduction. In this study, the amount of waste generation during the construction phase was calculated based on the quantities and the material loss rate of each building material to estimate the quantity of construction waste by the changes in the application of different structural systems for the slab of the studied model. The total waste generation during the construction phase of the different slab systems shows that the solid slab system produces the largest amount of construction waste, which is 101,361.385 kg. On the other hand, the void slab system generates 87,603.958 kg of the construction waste, which is the lowest amount among the four variables of this study. The additional purchasing costs due to the loss of construction materials indicate that the solid slab system would require 80,709.76 USD, which is the highest value of the four variables in this study. The void slab system would cost USD 50,054.12 for additional materials purchasing costs, which is approximately 38% lower than the solid slab system.

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Burkovič, Kamil, Martina Smirakova, and Pavlina Matečková. "Testing and Modelling of Concrete Pile Foundations." Key Engineering Materials 738 (June 2017): 287–97. http://dx.doi.org/10.4028/www.scientific.net/kem.738.287.

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Foundation of building on concrete piles is often used when it is necessary to carry the load into larger depth as by common foundation. Bearing capacity of piles or piled raft foundation is wide area to research. This paper deals with experimental load test of concrete pile and with their numerical modelling. Several types of foundation construction were tested and two kinds will be presented and compared in this paper - reinforced concrete foundation slab and raft foundation (made of reinforced concrete foundation slab supported by drilled reinforced concrete pilot). These types of foundation constructions were constructed as models, in a reduced scale, approx. 1:10. The size had to be adjusted due to limited capacity of the testing equipment and financial reasons. Except measuring of the foundation behaviour, there was also carried out measurement of the adjacent terrain.The aim of this paper is to compare the behaviour of rigid slab and the piled raft. The measurement results will be then compared with the results of numerical modelling.

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Nguyen Hoang Thuy, Trang, and Stanislav Shydlouski. "Situations in Construction of 3D Mapping for Slam." MATEC Web of Conferences 155 (2018): 01055. http://dx.doi.org/10.1051/matecconf/201815501055.

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Nowadays, the simultaneous localization and mapping (SLAM) approach has become one of the most advanced engineering methods used for mobile robots to build maps in unknown or inaccessible spaces. Update maps before a certain area while tracking current location and distance. The motivation behind writing this paper is mainly to help us better understand about SLAM and the study situation of SLAM in the world today. Through this, we find the optimal algorithm for moving robots in three dimensions.

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Huang, Daud, Shih Huang Chen, and Hnin Hnin Mon. "The Preliminary Study on Re-Utilization of Ferrous-Nickel Slag to Replace Conventional Construction Material for Road Construction (Sub-Grade Layer Improvement)." Advanced Materials Research 723 (August 2013): 694–702. http://dx.doi.org/10.4028/www.scientific.net/amr.723.694.

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Ferrous-nickel slag is an industrial waste material which produced from smelting process of ferrous-nickel uses in manufacturing of stainless steel and ferrous alloy industry, in China Guangdong province itself, it was estimated around 6-7million of ferrous-nickel slag has been produces annually, the common method in order to reutilize ferrous-nickel slag material is by using on cement industry (replace cement material) and as land-filling material. One of the main objectives of this study is to investigate the feasibility of reutilization of ferrous-nickel slag combined with soil improvement method to portion replace conventional construction materials such as sand and granular material on sub-grade or sub-base layer of pavement construction. Strength and swelling properties of ferrous-nickel slag and soil (sand) mixture after treatment with soil improvement agent will be use as main consideration the performances of ferrous-slag nickel material on road construction, includes 4-days soaked California Bearing Ratio (CBR), 7-day Unconfined Compressive Strength (UCS) and also swelling behaviour of the mixture.

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Yang, Qi Xing, Björn Haase, Feng Lan Han, An Jun Xu, Fredrik Engström, Jian Li Li, and Bo Björkman. "Plant Treatments of EAF Slag for its Use as Construction Materials." Advanced Materials Research 750-752 (August 2013): 1244–53. http://dx.doi.org/10.4028/www.scientific.net/amr.750-752.1244.

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At the steel plant of Höganäs Sweden AB, different steel grades were produced using an Electric Arc Furnaces (EAF). The slag tapped by the EAF often disintegrated during cooling. Slag fines from the disintegration are difficult to handle and to use as materials in construction. The plant tests of EAF slag treatments using stabilizer MCP-F of high P2O5 content were thus conducted, with 1st and 2nd campaign adding 10 and 20 kg MCP-F/ton slag, respectively. The MCP-F addition in slag pots and other test operations were carried out smoothly, without impacting the EAF steel production. Rates P2O5 recovery in the EAF slag were lower in some test heats. Studies may thus be carried out in future to increase the P2O5 recovery from MCP-F, hence, achieving a higher efficiency of stabilization treatments for the slag from the EAF plant.

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Aryngazin, Kapar Sh, Alexey V. Bogomolov, and Askar K. Tleulessov. "Innovational Construction Materials of LLP “EcostroyNII-PV” Production." Defect and Diffusion Forum 410 (August 17, 2021): 806–11. http://dx.doi.org/10.4028/www.scientific.net/ddf.410.806.

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The article discusses the experience of recycling industrial waste from the electric power industry and metallurgy. Based on the experience of Ecostroy NII-PV LLP. The proposed technology for manufacturing building products from ash and slag waste provides innovative compositions of raw mixtures. What provides an increase in operational characteristics and labor productivity in construction. The applied technology, in comparison with the existing analogues, provides for the use of local waste (ash and slag waste from the combustion of Ekibastuz coal, bauxite sludge from the Pavlodar aluminum plant, steel-making slags), differing in chemical and granulometric composition. as well as binding properties from other analogs and prototypes. In the manufacture of building products introduced mixture, including, wt %: slag Portland cement - 14.32-17.00; sand - 18.74-25.52, crushed stone - 46.50-49.71, sludge from alumina production obtained during the recycling of bauxite from Kazakhstan - 5-7; self-disintegrating steelmaking slag - 5-7; ash and slag waste from thermal power plants from burning Ekibastuz coals - 5-7. According to the test results, the average tensile strength of building products (paving slabs, curbs, hollow bricks) is 3.2 - 3.8 MPa (strength class V2.5).

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Gilyazidinova, Natalya, Evgeniy Shabanov, and Xuesheng Liu. "Use of Slag Concrete in Construction of Underground Structures and Mines." E3S Web of Conferences 105 (2019): 01039. http://dx.doi.org/10.1051/e3sconf/201910501039.

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The paper considers the possibility of using slag concrete in underground construction. Technological parameters for production of slag concrete with the set properties are defined. The influence of the composition of slag concrete used in the conditions of mine construction on the change of physical and mechanical characteristics, durability and stability is determined. The limits of technological parameters of slag concrete preparation are established. The possibilities of combined use of blast-furnace slags and clinkers for concrete in mine construction are substantiated. The chemical composition of blast furnace slag and the possibility of its application in the composition of concrete is described, the interaction of an aggregate - Portland cement with blast furnace slag is studied. The technique for conducting experiments to determine the rate of strength gain of different types of concrete is described. The rate of strength gains of heavy concrete and the rate of strength gain of slag concrete with additives and without additives have been compared. The possibility of application of this slag concrete in the process of concreting with the use of sliding formwork has been studied.

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Abu Маhadi, М. I., and А. V. Bezborodov. "APPLICATION SLAG-ALKALI BINDER IN CONSTRUCTION." RUDN Journal of Engineering Researches 18, no. 2 (2017): 212–18. http://dx.doi.org/10.22363/2312-8143-2017-18-2-212-218.

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Imai, Hiroshi. "Recent Half-Precast Concrete Slab Construction." Concrete Journal 33, no. 8 (1995): 5–15. http://dx.doi.org/10.3151/coj1975.33.8_5.

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Dreyfus, Shoshana J., and Lucy May Macnaught. "Joint Construction in the SLATE project." Linguistics and the Human Sciences 7, no. 1-3 (March 22, 2013): 77–99. http://dx.doi.org/10.1558/lhs.v7i1-3.77.

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Kojimori, Masanori, Katuyuki Nemoto, Toshiro Fukuokaya, Shinjiro Uchida, Hiroshige Matumoto, and Tadashi Mori. "Construction of New Slag Granulating Equipment." DENKI-SEIKO[ELECTRIC FURNACE STEEL] 74, no. 1 (2003): 55–59. http://dx.doi.org/10.4262/denkiseiko.74.55.

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Journal articles on the topic 'Slat construction'

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