Prohlížení Acta Polytechnica CTU Proceedings. 2022 ( vol. 32-39) dle názvu
Zobrazují se záznamy 132-151 z 290
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Heat transfer model verification for thermal monitoring system of integral bridges
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)Thermal actions considered on abutments of integral bridges by the European standard (Eurocode 1) might be in variety of certain situations underestimated. Based on this assumption, thermal monitoring system has been ... -
High thermal conductivity concrete for energy piles
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)Research is increasingly focusing on thermal properties of concrete with the aim of reducing the heat exchange between buildings and environment. On the other hand, concretes with high thermal conductivity could have ... -
High-performance concrete containing waste vitrified tiles
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)This contribution deals with the possibility to use waste vitrified tiles (VT) in high-performance concrete. Silica powder normally used in high-performance concrete is replaced by waste vitrified tiles in 25, 50, 75 and ... -
Holistic assessment methodology for Positive Energy Districts
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)Globally, cities are responsible for most of the world’s energy consumption and most of the carbon dioxide emissions. Therefore, the efficient transformation of urban energy systems is becoming a crucial step towards carbon ... -
How design concepts influence carbon footprints of load bearing structures
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)In recent years, it has become essential to consider the total carbon footprint of a construction project. Commonly, the question has been: ’What is the best material to be used in this context?’ In this paper we argue ... -
How municipalities should approach the transformation of public spaces
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)Public spaces are the living rooms of cities, accessible to everyone without any restrictions. Public spaces are the calling card of the city; they are where the community comes together. Their design either enables or ... -
Hygric performance of new building components for vertical green gardens
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)The newly developed box-like panel lightweight element for vertical greenery was designed and built at University Centre for Energy Efficient Buildings of the Czech Technical University in 2020. A test site for testing ... -
Implementation of positive energy district concepts and energy master plans for decarbonization of districts
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)In order to achieve a holistic approach to community energy planning for neighbourhoods and districts, it is crucial to provide planners, decision makers, and stakeholders with the necessary methods and instruments. However, ... -
Implication of climate changes on design of structures
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)The climatic data on which the current generation of the Eurocodes are based are mostly about 20 years old, with some exceptions of recent updates at a national level. The second generation of the Eurocodes for structural ... -
Improvement mechanism of recycled concrete using C-S-H type accelerator and modifying recycled aggregate by carbonation technology
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)In Japan, there is concern that concrete blocks due to demolition will increase with the renewal of concrete structures. Although it has been used for roadbed materials as recycling, in recent years, aggregates are removed ... -
Improving the properties of unburned earth to control the interior microclimate
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)The article concerns the problematics of unburned earth used as material for moulding formwork or clay plaster with lowered contraction, especially about interior unburned earth plaster with the heightened percentage of ... -
Increasing thermal protection with use of green roof
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)The use of green roof is a great choice in case of climate change mitigation and reduction of urban heat islands. Positive aspects of green roofs during winter or the whole year round balance are often overlooked. The ... -
Influence of heated facade air on the results of climate data measurement
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)Measuring climate data is a lengthy and technically challenging task. To record temperature data, small meteorological stations are located on the facade of the Research Centre building. Due to the position of the ... -
Influence of microstructure on rate-dependent response of unidirectional fibrous composites
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)This paper outlines prediction of the macroscopic response of unidirectional fibrous composites made either from basalt or carbon fibers impregnated by a polymeric epoxy matrix. The viscoelastic response of the matrix phase ... -
INFLUENCE OF NEW CONSTRUCTION PROJECTS ON VINOHRADY TUNNELS
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)After demolition of the brutalist architectural style Transgas building in Vinohradská Street, Prague, (all buildings of which were located above the historic Vinohrady tunnels II and III), there will be built the Vinohradská ... -
Influence of oxygen and argon plasma treatment on wettability and surface morphology of polypropylene microfibers
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)The surface treatment of polypropylene microfibers by plasma processing in oxygen and argon was studied with the motivation to increase their cohesion with the cement matrix. By plasma treatment, it is possible to modify ... -
Influence of plastic tension chord deformation on the shear capacity of prestressed beam elements
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)The shear strength of prestressed beam elements is of great interest with regard to the evaluation of existing concrete bridges. Accompanying extensive experimental test series, the adaptation and modification of existing ... -
Influence of steel fibers on the fatigue behavior of high-performance concretes under cyclic loading
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)Due to the advancement of high-performance concretes, the development of filigree constructions has been improved in the last decades. However, as the demand to create more filigree designs increases, the vulnerability to ... -
Influence of the structural integrity management on the levelized cost of energy of offshore wind: a parametric sensitivity analysis
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)The levelized cost of energy (LCoE) is an important measure to quantify the macro-economic efficiency of an offshore wind farm and to enable a quantitative comparison with other types of energy production. The costs of the ... -
Influence on permeability and pore structure of polyolefin fiber reinforced concrete containing slag
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)The purpose of this study is to assess the mechanical and microscopic properties of concrete containing different dosages of polyolefin fibers and slag through tests of compressive strength, resistivity, water absorption, ...