A5045826409- Geotechnical Engineering and Underground Structures
- Structural Engineering and Materials Analysis
- Geotechnical Engineering and Soil Stabilization
- Geotechnical Engineering and Soil Mechanics
- Geotechnical and Mining Engineering
- Granular flow and fluidized beds
- Geotechnical Engineering and Analysis
- Asphalt Pavement Performance Evaluation
- Infrastructure Maintenance and Monitoring
- Soil and Unsaturated Flow
- Railway Engineering and Dynamics
- Mechanical and Thermal Properties Analysis
- Waste Management and Environmental Impact
- Landslides and related hazards
- Geophysical Methods and Applications
- Rheology and Fluid Dynamics Studies
- Acoustic Wave Phenomena Research
- Radiation Therapy and Dosimetry
- Advanced Radiotherapy Techniques
- 3D Surveying and Cultural Heritage
- Numerical methods in engineering
- Rock Mechanics and Modeling
- Radiation Detection and Scintillator Technologies
- Historical and Cultural Studies of Poland
- Structural Health Monitoring Techniques
Instituto de Física Corpuscular
2024
Institute of Nuclear Physics, Polish Academy of Sciences
2024
Warsaw University of Technology
2015-2024
University of Michigan
2021-2022
à la diffusion de documents scientifiques niveau recherche, publiés ou non, émanant des établissements d'enseignement et recherche français étrangers, laboratoires publics privés.
Driving on an uneven road causes vibration of the vehicle. These vibrations affect comfort users but also convey information about profile. This study demonstrates feasibility, accuracy, and repeatability accelerometer system for pavement evaluation that computes international roughness index (IRI) using multiple smartphones to collect data. It uses quarter-car half-car suspension models calibrated through rides speed bumps or a section with known We report field test eight runs over 18.6-km...
The paper presents a new clump breakage algorithm for DEM simulation of crushable aggregates. We emphasize some issues related to the modeling rigid and abrasion (e.g., no interactions between members, theoretical mass members higher than clump). presented in this tackles those issues. Correction Love-Weber stress tensor is proposed, which allows estimating state separately. Also, we splitting that conserves system without introducing excessive potential energy coming from particles...
1. Brzeziński K., Gladky A., 2022, Clump breakage algorithm for DEM simulation of crushable aggregates, Tribology International, 173, 107661. CrossRef Google Scholar
The design of flexible and semi-rigid pavements by applying mechanistic-empirical methods involves the determination stress strain states in accordance with assumptions continuum mechanics. Advanced computational models should take into account rheological properties asphalt layers. Precise identification visco-elastic parameters aggregate mixtures requires a lot expensive laboratory experiments. objective this paper is to propose new method allowing constitutive based only on mixture...
The article presents the first discrete element method (DEM) simulations of dynamic compaction in Proctor test. aim was to analyze influence particle breakage on density intensely compacted granular assembly. Results from and laboratory tests were compared. Simulations with non-breakable aggregates enabled separation change size distribution rearrangement. Both factors play an essential role increasing bulk sample case tested (gap-graded) aggregate. breakable particles reproduce results...
This paper presents a photogrammetry-based volume measurement framework for the particle density estimation of Lightweight expanded clay aggregate (LECA). The results are compared with computed tomography (CT) and Archimedes’ method measurements. All steps required in order to apply proposed approach explained. Next, we discuss how interpretation open pores affects We propose process shapes obtained from different methods by applying an Ambient Occlusion algorithm same threshold, t = 0.175....
This paper presents a new approach to characterisation of asphalt mixtures constitutive models, with application pavement structures. It is well-known fact that temperature, frequency and time loading have great influence on the mechanical properties bituminous mixtures. For this reason, are usually presented in domain as complex numbers having real imaginary parts. convenient representation terms modulus phase angle leads dynamic master curve. The effective use theory linear viscoelasticity...
The paper presents classical and non-classical rheological schemes used to formulate constitutive models of the one-dimensional consolidation problem. authors paid special attention secondary effects in organic soils as well soil over-consolidation phenomenon. systems partial differential equations were formulated for every model solved numerically obtain settlement curves. Selected numerical results compared with standard oedometer laboratory test data carried out by on samples....
The goal of this paper is evaluation the volume measurement optical method suitability for determining relative compaction soils. Structure Motion technique was utilized in order to achieve by making three-dimensional models (with Bentley ContextCapture software). Created were used pit-holes. results compared with basic methods: sand cone test and water method. laboratory tests carried out two stages. In first stage, tested similar operating conditions. Ten holes made soil volumes measured...
In many fields of Civil Engineering Finite Element Analysis (FEA) is widely used at the design stage. case railway trackbed we can take into account various geotechnical and structural problems. countries resilient modulus as a key parameter for evaluation correctness. Knowledge module itself does not prove correctness, because example it slope stability. These phenomena, which are crucial to subgrade behavior, be described using FEM models. This article presents simplified numerical model...
Interpretation of the triaxial testing results soil shear strength parameters is a particular case simple linear regression. In regression have certain physical interpretation (i.e. intercept cohesion and slope tangent internal friction angle). Another important issue that fitting line carried out on other plane to Mohr-Coulomb criterion. The need be later transformed into parameters. This makes uncertainty analysis nontrivial. study focuses two abovementioned issues. Firstly, transformation...
Abstract A concept and preliminary results of numerical study changes in the rail track dynamic characteristics are presented paper. Change is introduced order to reduce noise emissions. The theoretical relationship between studied (TDR - Track Decay Rate) was briefly explained, then methodology FEM modelling for standard test simulation described. Three mass modification variants two types were analyzed. Damper connection modeled as viscoelastic joint. vibrations analyzed both (vertical...
The objective of the paper is evaluation fatigue strength pavement structure considering effects load velocity and temperature variations. analysis was performed in a wide range time-temperature operating conditions. Huet-Sayegh visco-elastic model used order to describe rheological properties asphaltic layers. identification procedure asphalt mixture based only on stiffness moduli results by applying method described previous authors [13]. Consequently, stress strain states were determined...
The main purpose of the paper is to evaluate effect cyclic loading on static bending strength Rb cement-bound sand (CBS). mixture contained graded standard quartz bound with cement added at a proportion 10% weight sand. part experimental research were three-point tests performed rectangular specimens. specimens subjected pre-loading different numbers cycles and force values. Strength then conducted pre-loaded results compared non-preloaded ANOVA statistical analysis method was applied...