Hledat
Zobrazují se záznamy 1-10 z 91
Hygro-mechanical model for concrete pavement with long-term drying analysis
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2023)
Concrete pavements are subjected to the combination of moisture transport, heat transport and traffic loading. A hygro-mechanical 3D finite element model was created in OOFEM software in order to analyse the stress field ...
Extracting general knowledge of model parameters for clays out of numerous laboratory tests
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2023)
This paper is concerned with the process of determining the material parameters of advanced constitutive models for clays. Provided results are applicable already in the early stages of geotechnical survey when no detailed ...
Dependence of mechanical and thermal properties on the composition of lightweight gypsum composites
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2023)
One of the ways to use the treated gypsum waste is in gypsum mixtures for the production of gypsum blocks. Gypsum blocks can be used in standard interior as well as exterior applications and are made of gypsum, water, PP ...
Analysis of tunnel excavation based on linear DFN-FEM modelling
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2023)
Simulations of tunnel excavations have to take into account the natural occurrence of joints and faults in the surrounding rock mass, which dominantly control its mechanical response. In this paper, we present work in ...
Return mapping scheme for the Hoek-Brown model with tension cut-off
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2023)
The present paper revisits a stress update procedure for the Hoek-Brown plasticity model enhanced by a Rankine type of tension cut-off failure criterion. Limiting tensile stresses not only supports the behavior of weak ...
Bacterially induced calcite formation at the surface of recycled concrete
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2023)
The construction industry is one of the main sources of greenhouse gas emissions, and portland cement production is responsible for approximately 8 % of anthropogenic CO2 emissions. Microbially induced calcium precipitation ...
Modelling of laminated glass interlayer by fractional viscoelasticity
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2023)
Fractional calculus, i.e. the theory of derivatives and integrals of non-integer order, can be efficiently used for the theoretical modelling of viscoelastic materials. Our research is focused on the polyvinyl butyral which ...
Bar-supported and unsupported dental implants: a QCT-FEA study in human maxilla
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2023)
Two variants of implant-supported overdentures (IODs) were investigated by quantitative computed tomography-assisted finite element method (QCT-FEA) on a patient-specific CTreconstructed model of human maxilla. The analyzed ...
The experimental evaluation of tensile forces in stays of a cable-stayed footbridge
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2023)
The topic of this paper is an experimental analysis of the dynamic behaviour of stays of an existing footbridge focusing on determination of the tensile forces in stays. The examined structure was the footbridge across the ...
The influence of lithium water glass on the durability of concrete
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2023)
The aim of the research is to verify the effect of lithium water glass on the durability and reduction of concrete absorption. For this purpose, the absorption test was made and the influence of the impregnation agent on ...