Prohlížení Acta Polytechnica CTU Proceedings. 2024 ( vol. 46-47) dle názvu
Zobrazují se záznamy 4-23 z 36
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Cementitious material development for additive fabrication
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2024)For the 3D STAR project and 3D printing purposes, a special fine-grained cement mixture from locally available raw materials was developed. The reason for the development of the custom mixture was the possibility of arbitrary ... -
Characteristics of fibres based on secondary raw materials and their use in concrete technology
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2024)Different types of fibres in cementitious composites, particularly in concrete, are currently used for a number of reasons. Fibres are being added to improve mechanical properties (especially steel and glass fibres), to ... -
Cities in transition: Krakow‘s social, economic and spatial transformation within the last thirty years (selected aspects)
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2024)Krakow is a city that has undergone an immense transformation in recent years. At the end of the 1980s, the period of communism ended and Polish local governments began to operate based on the principles of subsidiarity, ... -
Concrete and reliability of existing prestressed bridge structures
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2024)A large number of post-tensioned concrete bridges were built in the second half of the last century. They have often been insufficiently maintained during their lifetime (usually around 50 years). Nowadays, these structures ... -
Concrete mixtures with photovoltaic panels glass: a review of the situation in Czech Republic
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2024)Solar energy production was initiated in the 1990s following by rapid increase of the use of photovoltaic (PV) technology. Most of older solar panels in the Czech Republic were installed between 2000 and 2006 and a global ... -
Development and causes of migration in lagging regions in the years 2017–2021: a case study of the Slovak Republic
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2024)Migration represents a process where people leave their homes for various reasons. The aim of the article is to evaluate the level and development of migration in Slovakia and to identify its causes in the Gemer region, ... -
Development of hydration temperatures on cement pastes
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2024)This article deals with the possible combination of high temperature fly ash with fluidised bed fly ash. The main objective of the experiment is to verify the effect of the combination of these two energy by-products on ... -
Dowel bars – reinforcing elements of cement concrete pavements
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2024)Our aim is to analyze the function of reinforcement elements (dowel bars) in cement concrete pavement to highlight the influence of these elements on the service life of the pavement as a whole and to find possible ... -
Effect of preparation process on purity of tricalcium aluminate
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2024)In the realm of cement production, traditional fuels are steadily giving way to alternative sources. While this shift yields economic and ecological advantages, it introduces notable technological challenges. Specifically, ... -
General quality of urban greenery as a city indicator in Brazil in comparison with central Europe
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2024)The evidence for climate change and its associated consequences, such as severe droughts, floods, and storms, exposed the need to investigate the ways that countries can cope with them, especially Brazil, which is a ... -
Investigating MIDR through AI: a case study of the city of Most in Czech Republic
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2024)Urban planning, which is inherently multifaceted, requires the development of innovative tools to navigate its complexities. This study introduces a pioneering approach that presents an AI-driven framework tailored for ... -
Measurement of asphalt concrete base thickness using ultrasonic pulse echo
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2024)This paper deals with the description and use of one of the up-to-date NDT method, the ultrasonic pulse echo, to determine the thickness of an asphalt concrete model. In the article, the authors explain the principle of ... -
Mechanical properties of cement pastes containing plasma-treated silicon-based materials
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2024)The study delves into the impact of waste silicon-based materials on the mechanical characteristics of the resulting cement pastes. The investigation uses Portland cement CEM I 42.5R in conjunction with silicon-based waste ... -
Methodology for measuring the potential of a tourism destination in relation to sustainable local tourism product development
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2024)Tourism is very strongly associated with the potential of the area, including the society, in which the tourism activities take place. This potential is often fragmented and it depends on the skills of local actors, ... -
Monitoring degradation in alkaline-activated slag materials
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2024)This paper deals with determining degradation changes in alkaline-activated slag-based building materials. It describes methods for determining dynamic elastic moduli obtained by acoustic non-destructive methods, including ... -
Municipal waste management performance: a focus on Slovakia and its LAU-1 districts
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2024)In this paper, we analyse the changes made to the basic EU directive on waste and assess its impact on the waste legislation of EU members. We then examine the Slovak waste strategies/programs that have implemented the EU ... -
Parameters of back filling material prepared from mine tailing, fly ash, and mine water
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2024)The article investigates the influence of mine tailing, fly ash, and mine water on strength parameters as mine paste filling material performing the strength tests on different recipes of mortar mixes with individual types ... -
Possibilities of reinforcement of subtle translucent concrete panel
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2024)Textile-reinforced concrete not only has many advantages that lead to less consumption of primary resources, but also enables the creation of thin and subtle elements. The high performance of such elements allows us to ... -
Possibilities of replacing natural sand in concrete
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2024)This study explores the potential of using fine recycled aggregate (FRA) to replace natural sand in concrete production. The research was divided into two parts. In the first part, natural aggregate’s complete fine fraction ... -
Preparation of light fraction silicate filer after the mining for the base layers’ road construction
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2024)The article main objective was eco-innovation in the field of utilization and creation of a complex waste-free technology for the separation of components during ore extraction with subsequent processing, recovery of mine ...