Browsing Acta Polytechnica CTU Proceedings. 2022 ( vol. 32-39) by Title
Now showing items 160-179 of 290
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Kalker’s coefficient c11 and its influence on the damping and the retuning of a mechanical drive torsion system of a railway vehicle
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)Within the research of electromagnetically excited torsion oscillations in the mechanical part of traction drive systems of modern railway vehicles, which has been realized at the Faculty of mechanical engineering at the ... -
Land use change impact on urban land surface temperatures: A GIS-supported satellite-based case study
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)This paper illustrates the use of GIS techniques and satellite data in order to analyze the impact of land use change on the local urban microclimate. Specifically, a case study is presented that concerns the city of Vienna. ... -
Lateral load bearing characteristics of light gauge steel and lightweight concrete shear walls
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)In China, there is a new structural system named light gauge steel and lightweight concrete (LSLC) structure, which used lightweight concrete as structural material in composite way with cold-formed steel. Here, the shear ... -
Life cycle assessment of carbon concrete composites: a circular economy path beyond climate mitigation?
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)Sustainable construction and materials play an ever-important role to stay within our planetary boundaries. In support, innovative carbon concrete composites (CCC) promise significant raw material savings by integral design. ... -
Life cycle management of concrete structures based on sustainability indicators
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)A concrete structure should be sufficiently planned, designed, executed and maintained to ensure its requirements during the life cycle. However, structures suffering from serious deterioration in structural members and ... -
Lifelong learning of property managers in enabling sustainable and energy efficient residential buildings: experiences of care project in Tampere region
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)The existing building stock causes 40% of the total energy consumption in the European Union. The high energy consumption together with ageing buildings put strong pressure on renovation of buildings and lowering of CO2 ... -
Lightwell in residential building: Architectural solutions to the daylighting performance through parametric simulation
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)The lightwell is an architectural solution to promote daylight into the internal spaces from the core of a building. The shaft configurations, such as geometry and reflectance can affect the performance of the daylighting ... -
Limitations of life cycle assessment of green concretes - a state-of-the-art review
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)There have been numerous researches focusing on the alternatives to conventional concrete regarding environmental benefits and trade-offs. For this purpose, nowadays, the Life Cycle Assessment (LCA) is widely used. Until ... -
Load transfer mechanism of concrete screws
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)Even though the market and development for concrete screws has been increasingly rising in recent years, the load transfer mechanism of concrete screws has not yet been fully investigated. Therefore, different tests of ... -
Long span post-tensioned box girder bridge in Bratislava
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)The paper describes an analysis and detailed design of the 470 m long D4 motorway bridge in the Slovak capital Bratislava. This bridge is a part of 2 932.50 m long D4 motorway crossing of the Danube River and its surrounding ... -
Low rents and low operating costs in social housing - an example from Germany
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)The social housing project “PassiveHouseSocialPlus” in Germany with 42 residential apartments demonstrates how low rents and low operating costs can be combined. Different concepts for reducing operating costs were implemented ... -
Lower bound analysis for shear assessment of full-scale RC girders subjected to axial tension
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)Axial tension force exerted as a result of a temperature change or shrinkage can cause the collapse of RC structural members. Design code provisions and analytical models such as Modified Compression Field Theory (MCFT) ... -
Maximizing information obtained from standardized fire tests using a Bayesian framework
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)Current practice is mostly focused on prescriptive design approaches where the performance of the structure in case of fire is assessed based on its performance in standardized fire tests. Those tests indicate whether the ... -
Measurement and CFD analysis of a local radiant cooling solution
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)This paper entails an empirical and computational assessment of the air flow field in the close proximity of a vertically positioned radiant cooling panel. This radiant cooling solution differs from the conventional ... -
Measuring circularity from buildings to neighbourhoods
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)The circular economy (CE) aims to eliminate the concept of pollution and waste generation, maintain the integrity of the product over several use cycles, and focus on closing material and energy loops. Circularity metrics ... -
Mechanical and durability performance of cementitious matrices with low cement and different additions
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)Nowadays, the decarbonization of the concrete sector is a priority to counteract the global environmental harmful. Knowing that Portland cement is responsible for significant anthropogenic emissions worldwide, the optimization ... -
Mesh generation and mechanical tests of basic element cells of porous structures
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)Advanced porous structures are novel, emerging materials with a broad range of applicability but a rather difficult means of design and manufacturing. The advent and availability of the additive manufacturing industry in ... -
Methodology for evaluation of the life cycle of buildings with a focus on the private sector
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)The paper describes the innovative methodology for the evaluation of the life cycle of buildings, which will be used in construction projects of Skanska, or other construction companies, in selecting the optimal solution ... -
Methylene blue test and adsorption capacity of clays
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)This article presents results of experimental measurements focused on an ability of clay to adsorb Methylene Blue dye. This adsorption capacity is determined by a methylene blue test. Adsorption capacity could be a specific ... -
Microstructural characterization of high-performance steel fiber reinforced geopolymer concrete
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)Due to growing environmental and economic concerns associated with conventional building materials, research interest gravitates towards the development of novel environmentally friendly materials as alternatives to ...