Acta Polytechnica CTU Proceedings. 2022, vol. 33
Zobrazují se záznamy 1-20 z 98
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TRC sandwich solution for energy retrofitting
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)Concerning energy improvement of existing façades, a favourable system involves prefabricated multilayer panels, made of internal insulation core and outer textile reinforced concrete layers. It is a convincing alternative ... -
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 ... -
Durability of high belite cement as new technical solution for concrete
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)The study presents an investigation on the durability performance of concretes produced with an industrial scale high belite cement. This binder, thanks to the high amount of C-S-H gel and the lower C3S/C2S ratio, is ... -
Interfacial bond behavior of adhesively-bonded timber/cast in situ concrete (wet bond process)
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)The goal of this research was to study the strength of the interfacial bond between cast-in-situ concrete and engineered timber (cross-laminated timber (CLT)). Double lap specimens were manufactured using fresh concrete ... -
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. ... -
Breakthrough of the resemblances and correspondences between resilience and sustainability in civil infrastructures
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)Sustainable construction has become a growing trend among researchers and stakeholders. Simultaneously, resilience and risk assessments for civil Infrastructures have flourished in terms of importance among researchers, ... -
Quantifying uncertainties in the sustainability evaluation of concrete materials considering regional characteristics in Japan
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)In the evaluation of concrete sustainability, what constitutes "sustainable" to one region may vary from another. This often leads to methodological forms of uncertainties that makes the evaluation process more complex. ... -
Rational and sustainable procedure in the design of bridges using pre-stressed concrete beams a theoretical practical method
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)Currently there is not a direct procedure for the design of this bridge system, the procedure is still based on trial and error, there are no studies that give us both the optimum number of beams and other characteristics ... -
Determination of in-situ concrete compressive strength under consideration of rearrangement effects
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)For the design of existing structures the concrete compressive strength and the derived mechanical parameters are of central importance. Due to safety reasons the compressive strength of existing concrete is usually set ... -
Reduction of dissolved oxygen in minimizing corrosion
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)Concrete structures are susceptible to corrosion especially when exposed to marine environment. In order to minimize the corrosion in reinforced concrete, reduction of dissolved Oxygen (DO) in mixing water is recommended. ... -
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 ... -
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 ... -
The status of sustainable concrete codes in the United States
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)As the focus on embodied carbon within the built environment has grown in the U.S., local jurisdictional codes have increasingly proposed and implemented code language that requires the use of concrete mixtures that have ... -
Optimizing the acid resistance of concrete with granulated blast-furnace slag
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)Concrete structures exposed to high levels of chemical attacks are assigned to exposure class XA3, which recommends separate concrete protection or a special expert solution to ensure durability. Due to the partial ... -
Axial behaviour of strengthened circular hollow reinforced concrete column with CFRP partial confinement
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)Circular hollow reinforced concrete column will experience deterioration due to many causes such as natural disaster, corrosion, low quality and others. Therefore, structural strengthening is required since replacing the ... -
A study on properties of concrete with dry fly ash and fly ash slurry stored with stirring
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)In the evaluation of concrete sustainability, what constitutes "sustainable" to one region may vary from another. This often leads to methodological forms of uncertainties that makes the evaluation process more complex. ... -
Study for re-ASR behaviour of recycled concrete using ASR generated concrete and considering countermeasure technology
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)It is predicted that the concrete volume to be discarded will increase due to the renewal of the concrete structures and the increase in the returned concrete from construction site. The use of this concrete block as ... -
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) ... -
Durability evaluation of surface softened steel bar for prestressed concrete
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)The effects of Si addition and surface softening on delayed fracture susceptibility were evaluated in tempered martensitic steels with tensile strength of 1450 MPa. The delayed fracture susceptibility was reduced when Si ... -
Expansion of sustainability in the ACI 318 building code
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)The American Concrete Institute (ACI) has long recognized the growing importance of accounting for environmental sustainability in the design of concrete structures. As the next version of the ACI 318 Building Code is being ...
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