A5039114263- Fire effects on concrete materials
- Fire dynamics and safety research
- Wood Treatment and Properties
- Structural Behavior of Reinforced Concrete
- Structural Response to Dynamic Loads
- Structural Load-Bearing Analysis
- Structural Analysis and Optimization
- Bamboo properties and applications
- Structural Analysis of Composite Materials
- Hygrothermal properties of building materials
- Concrete Properties and Behavior
- Fire effects on ecosystems
- Tree Root and Stability Studies
- Natural Fiber Reinforced Composites
- Engineering and Material Science Research
- Masonry and Concrete Structural Analysis
- Textile materials and evaluations
- Structural Health Monitoring Techniques
- Civil and Structural Engineering Research
- Virtual Reality Applications and Impacts
- Heat Transfer and Numerical Methods
- Flame retardant materials and properties
- Gear and Bearing Dynamics Analysis
- Evacuation and Crowd Dynamics
- Thermography and Photoacoustic Techniques
University of Ljubljana
2014-2024
Geodetic Institute of Slovenia
2011-2024
Vipap (Slovenia)
2016
Trimo (Slovenia)
2007
Abstract Moisture transport in an open porous hygroscopic material such as wood is a complex system of coupled processes. For seasoned natural climate three fully processes active the moisture are readily identified: (1) diffusion vapor pores; (2) phase change from one state to another, also called sorption; and (3) bound water tissue (in cell wall). A mathematical model for predicting given condition must at least consider dominating simultaneously be considered accurate. In this study,...
The present paper summarizes recent research on timber–concrete composite (TCC) systems exposed to fire conditions. Experimental work these in conditions is not as extensive normal temperature Therefore, only a few types of TCC are covered herein. secondary objective this the principles existing simplified procedures for fire. These were developed and/or validated with regard available test data, and discuss possibilities development new enhanced, calculation methods. A summary then...
Rheological behavior of wood under uniaxial compression along and perpendicular to the grain in constant environment was examined. Tests with deformation rate until failure stress relaxation tests applied stepwise were carried out. The experimental results showed nonlinear material over time that got more prominent high levels. Considerable amount relaxed during applying deformation. Wood experienced greater than it. Three rheological models for orthotropic calibrated experimentally...
Abstract A hygro-mechanical (H-M) analysis of a wooden specimen sustaining mechanical load while subjected to varying relative humidity was performed predict the long-term rheological behavior wood. The numerical based on experimental results total strains, monitored in two orthotropic material directions oak wood specimens under constant uniaxial compression and with moisture content (MC) variation. For analysis, multi-Fickian transport model (MFMTM) used obtain temporal spatial MC fields,...
In the design of timber structures, mechanical resistance in fire conditions has to be ensured among others. European standards, Eurocodes, reduced cross-section method is given determine structural elements conditions. The based on an effective that determined by two key parameters, namely charring depth and thickness zero-strength layer where latter accounts for reductions stiffness strength due elevated temperatures. Although, 7 mm only prescribed ISO 834 standard exposure longer than 20...
Abstract Fire resistance is one of the essential requirements to be fulfilled in design timber structures. For this purpose, a reduced cross-section method given European standards, Eurocodes. The based on assumption that an initial, rectangular exposed fire conditions reduces effective cross-section, which has material properties as at room temperature. part with no determined by sum two parameters, namely charring depth and thickness zero-strength layer. Eurocodes give value latter only...
Abstract The paper presents a novel approach to determine charring of wood exposed standard and natural fire that is based on new numerical model named PyCiF. couples an advanced 2D heat-mass with pyrolysis model. A criterion physical phenomenon implemented in the PyCiF wood. This main advantage comparison common modelling approaches, which require empirical value temperature often called char front temperature. fact not explicit as assumed by isotherm 300 °C advantageously considered...
A three-step model for the performance-based numerical simulations of fire response steel–RC two-layered beam-like composite structures is presented and validated. The first step consists determination evolution temperatures in structure׳s surroundings. Moisture heat transfer through RC layer conduction over steel are obtained second step. In concrete, water vapour, dry air, free discussed as well evaporation liquefaction phenomena dehydration concrete its thermal mechanical degradation....
Analytical procedure, based on the linearized stability analysis, is presented for determination of buckling load and temperature a straight, geometrically perfect, axially loaded steel column subjected to an increasing simulating fire conditions. The nonlinear kinematical equations nonlinearity material are considered. stress–strain relation at elevated rules reduction parameters due increased taken from European standard EC 3. Theoretical findings applied in parametric analysis series...
Abstract Performance-based approach, introducing a new two-phase computational model for determining the response of prestressed hollow-core concrete slab exposed to natural fire including heating and cooling phase, is presented. Firstly, two-dimensional coupled hygro-thermo-chemical used determine time dependent temperature moisture field in characteristic cross-section during fire. In addition, influence opening on distribution over accounted for. Secondly, stress–strain state determined...
Abstract Changes in relative humidity of the ambient air, RH (%), cause wetting and drying wood material, which results non-uniform moisture contents or gradients, consequently moisture-induced stresses strains glued-laminated timber (glulam) members. The aim present paper is to perform a hygro-mechanical analysis predict mechanical behavior glulam specimens exposed two regimes, causing from 50% 90% RH, compare numerical experimental results. aims are also quantitatively analyze influence...
An analytical procedure is presented for the determination of buckling load and temperature a straight, slender, geometrically perfect, axially loaded, translationally rotationally restrained steel column exposed to fire. The exact kinematical equations are considered, but shear strain neglected. linearized stability theory employed in analysis. Behaviour at elevated assumed accordance with European standard EC 3. Theoretical findings applied parametric analysis columns. It found that length...