An experimental preparation of fibre concrete to software’s detection of fibres

Gregorová, Valéria; Ďubek, Marek; Ďubek, Silvia; Štefunková, Zuzana

doi:10.1088/1757-899x/549/1/012018

Cited by 6 publications

(4 citation statements)

References 17 publications

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“…It is crucial to know the material properties of the structure and the uniformity of the distribution of reinforcement or cracks in the material. The development of new NDT methods usable for evaluating the concentration and orientation of steel fibers in composites has been discussed several times among the professional public [5][6][7]. The authors themselves have been researching and publishing in this area for a long time [7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

NDT Methods Suitable for Evaluation the Condition of Military Fortification Construction in the Field

et al. 2020

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The protective structure is designed to protect the live force against the impact of a shock wave and projectiles, it cannot be diagnosed by the destructive method which devalues the protective structure by sampling. The authors are looking for a combination of suitable non-destructive technology (NDT) methods that would be used in the future to prove the degree of damage to cement-based protective structures after an explosion. This article represents the first part of an experiment designed to verify the applicability of NDT methods, to evaluate the degree of damage of the protective structure in the field. The experiment consists of three parts. The first part is a laboratory verification of the initial material characteristics of the materials used. The first test set of structural elements is made of steel fiber-reinforced concrete. The elements are evaluated using NDT methods and for comparison by destructive laboratory methods. The second part is the impact of structures using explosion and evaluation of the condition of structures using NDT methods in the field. The last part is used to verify the results of the NDT method, which ensures the residual strength of the structure in the laboratory and try to find the relationship between changes in the results of NDT methods and the residual strength. Radiography was included in the introductory and concluding parts of the experiment to verify the results. Although this method is not suitable for using in-situ, it is the only standardized method of the NDT methods used.

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Section: Introductionmentioning

confidence: 99%

NDT Methods Suitable for Evaluation the Condition of Military Fortification Construction in the Field

et al. 2020

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“…The intelligent digital information model built in this way significantly supports subsequent "smart" innovations at all stages of the design, procurement or use of the construction. It follows that construction and building technologies are also responding much faster to global challenges in the field of sustainability of energy, resources, environment, but also intelligent design solutions [11] or better customization of provided services in the field of construction supply [12]. Modern technologies and methods in the construction industry are currently marked by the trend of sustainability and increasing productivity by new modern technologies or by innovation of traditional modern methods [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Elements of the Fourth Industrial Revolution in the Production of Wood Buildings

Švajlenka

Kozlovská

2020

Teh. glas. (Online)

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We are on the threshold of a technological revolution that fundamentally changes the way we live, work and communicate with each other. To some extent, scale and complexity, this transformation will be as fundamental to humanity as no other technological change in the past. We do not know how it will evolve, but one thing is clear: the response to it must be integrated and comprehensive, involving all stakeholders on a global basis, from the public to the private sector, to the academic community and to civil society. In the context of sustainable and efficient construction, traditional material bases such as wood are becoming increasingly prevalent and implemented in modern design processes and design solutions. The great potential of this building material is achieved due to developments in production as well as the actual construction of timber buildings. Possible ways of production and construction of wooden buildings are diverse. Especially through prefabricated and solid wood products, which are also cross-glued laminated timber products, modern timber construction represents an interesting and sustainable construction technology. The aim of this paper is to define the basic aspects of industrial building industry in the context of new trends and to introduce the possibilities of implementation of elements of industry 4.0 in the field of wood-based construction.

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“…The categories of skeletal and elemental constructions are developed from half-timbered constructions and represent a construction method using wattle [5]. In addition to traditional wood construction methods, there are also hybrid methods developed in recent years, which combine wood as a construction material with other construction materials [6].…”

Section: Introductionmentioning

confidence: 99%

Comparison of Laboratory and Computational Models of Selected Thermal-Technical Properties of Constructions Systems Based on Wood

et al. 2020

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Energy-efficient buildings, sustainable buildings, smart buildings, nearly zero-energy buildings, passive and active buildings are construction concepts widely recognised as setting the latest trends. The purpose of their design is to create an optimal thermal microclimate by means of heat flows that are either formed within it or enter into it. This research paper presents an analysis of the measurements of the density of heat flows, their spread in building constructions, all of which is examined in laboratory conditions and confronted with calculation models. The hypothesis of this research is to confirm or refute whether the computational models match the laboratory simulations in terms of thermal-technical parameters. The research uses a methodology designed for examining building constructions under virtually stable conditions. Two variants of external sandwich walls based on prefab cross laminated timber panels (variant A) and structural insulated panel (variant B) were proposed as the subject of the study. Both variants were subjected to research in laboratory conditions and computational simulations. For the sake of comparison, the calculation simulations that manufacturers of wood construction systems typically declare were also performed. The results of the analyses show significant differences between the theoretical or declared parameters and the values measured in laboratory conditions (7.5–32.6%). The deviations of the experimental measurements from the calculated or declared parameters were not as significant for variant A as they were for variant B. These findings show that for these analysed sandwich structures based on wood, it is not always possible to reliably declare calculated values of thermal-technical parameters. The publication is also a contribution to the current needs in the field of heating technology in terms of sustainability and the quality of internal environments.

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An experimental preparation of fibre concrete to software’s detection of fibres

Cited by 6 publications

References 17 publications

NDT Methods Suitable for Evaluation the Condition of Military Fortification Construction in the Field

NDT Methods Suitable for Evaluation the Condition of Military Fortification Construction in the Field

Elements of the Fourth Industrial Revolution in the Production of Wood Buildings

Comparison of Laboratory and Computational Models of Selected Thermal-Technical Properties of Constructions Systems Based on Wood

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