Prohlížení Acta Polytechnica CTU Proceedings. 2022 ( vol. 32-39) dle názvu
Zobrazují se záznamy 92-111 z 290
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ECOPOOL+++: Developing a sustainable outdoor heated swimming pool
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)The University of Algarve, in consortium with “Cristal Construções – Materiais e Obras de Construção Civil”, “Itelmatis Control Systems” and “Itecons – Instituto de Investigação e Desenvolvimento Tecnológico para a Construção, ... -
Ecotoxicological assessment of recycled aggregate and concrete via aquatic biotests
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)With the growing consumption of primary raw materials, the need for recycling of construction and demolition waste (CDW) arises. According to international and national regulations, any waste must be tested for ecotoxicity ... -
Effect of cracks on the service life of RC structures exposed to chlorides
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)To move towards a more sustainable concrete, the enhancement of its durability is strongly encouraged and, dealing in particular with reinforced concrete (RC), this mainly means to prevent the damage due to environmental ... -
Effect of decision parameter efficiency on target reliability
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)Target reliability forms the basis of most modern design standards and is intended to represent an optimal balance of safety and risk of failure. Previous research noted discrepancies between target reliability obtained ... -
Effect of superplasticizer on the strength of fly ash based geopolymer concrete
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)In this research, the effect of a polycarboxylate based superplasticizer on the strength of Geopolymer Concrete (GPC) was investigated. A fixed amount of superplasticizer (1.5 % of Fly Ash weight) was utilized along with ... -
Effect of TiO2 and ZnO powder mixtures on mechanical and photocatalytic performance of high performance concrete
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)The development of new modified cement-based materials is increasingly becoming a necessity for improving the durability and surface performance of building materials. Titanium dioxide (TiO2) photocatalyst has been widely ... -
Effect of using biomass fly ash on the concrete sustainability
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)Biomass fly ash has been studied has a partial cement material, since this material has a positive effect on concrete properties. Even though, some mixes with BFA presents a positive benefit, they need to be economically ... -
Energy flows along the production and use of secondary materials with a special focus on concrete
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)Urban mining in the existing building stock can contribute to securing raw materials and conserving natural resources if the potential of recycling construction waste is consistently exploited. From an ecological point of ... -
Energy performance estimation for large building portfolios with machine learning-based techniques
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)Building operation is responsible for 28% of the world’s carbon emissions. In this context, establishing priorities in refurbishment strategies at the scale of a city or a group of buildings is important. Such procedures ... -
Engineering properties of geopolymer concrete: a review
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)Geopolymer concrete (GPC) could be a solution that uses a cementless binder and recycled materials for producing concrete, while reducing the carbon dioxide emission and the demand for raw materials. In addition to the ... -
Enhanced service life of existing infrastructure buildings by use of concrete screw anchors as post-installed shear reinforcement
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)In the last decades, traffic on railways and roads has increased significantly in Central Europe. On the other hand, the existing infrastructure mainly origins from the late 1950s to the 1970s. This applies also for the ... -
Environmental assessment of non-metallic reinforcement for concrete structures as an alternative to steel reinforcement
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)The concrete industry accounts for a significant amount of CO2 emissions worldwide. One approach to counter this issue includes material reduction of structural components via the use of non-metallic reinforcement, such ... -
Environmental impacts of using desalinated water in concrete production in areas affected by freshwater scarcity
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)Up to 500 litres of water may be consumed at the batching plant per cubic meter of ready mix concrete, if water for washing mixing trucks and equipment is included. Demand for concrete is growing almost everywhere, regardless ... -
Environmental performances evaluation through building information models
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)The construction industry produces several negative environmental impacts. To promote solutions that reduce these negative impacts, it is crucial to increase awareness among all parties involved in the supply chain. ... -
Environmental perspectives of fine grounded concrete powder: LCA case study of light-weight concrete block
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)The construction elements produced with low demand for primary resources are being developed in the building industry. However, not only consumption of primary resources but also environmental impacts of such products ... -
Equivalent thermal diffusivity of natural and recycled aggregate concrete at temperature up to 350 ⁰C
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)The paper presents the evolution of equivalent thermal diffusivity with temperature of concretes with natural coarse aggregates and recycled concrete aggregates. Thermal diffusivity was evaluated based on the temperature ... -
Establishing model uncertainty of SLS reinforced concrete crack models applied to load-induced cracking
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)Although some research has been performed, serviceability limit state (SLS) concrete crack models have yet to be calibrated fully in probabilistic terms in structural design standards. This is partly due to the fact that ... -
Estimating running safety factor of ballastless railway bridges using tail modelling
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)Excessive vertical acceleration of ballastless railway bridges subjected to vibrations induced by passing trains is one of the governing design criteria for bridges in high-speed lines. However, to the authors’ knowledge, ... -
European Environmental Databases. OpenDAP, Spanish context.
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)With the aim of facilitating sustainability assessment through Life Cycle Assessment, the Eduardo Torroja Institute of Construction Sciences. CSIC is developing a public database of environmental information: OpenDAP. One ... -
Evaluation of thermal and mechanical properties of demonstration wall utilizing phase change cementitious materials
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)International project PoroPCM involves partners from Germany, Czech Republic, Spain and Japan with the objective to develop new multifunctional Phase Change Materials modified porous cementitious nanocomposite (PoroPCM). ...