Test

Modeling the problems of dynamics and stability as well as thermal and thermo-mechanical problems of periodically micronized or tolerance-periodically micronized structures (i.e. structures with a functional gradation of material properties) using asymptotic and non-asymptotic approaches – study of the scale effect.

Shaping optimal material and construction solutions in construction.

As part of the issues related to the improvement of methods of testing mineral and organic soils under complex load conditions, tests are carried out in a cyclic triaxial apparatus, a resonance column, and a cylindrical torsion apparatus to determine the characteristics and parameters for nonlinear visco-plastic soil models.

As part of the development and improvement of methods and interpretations of laboratory and field soil tests using non-destructive techniques, tests of deformation and strength characteristics are carried out in a triaxial apparatus in the field of small deformations with acoustic wave velocity measurement. Improving the interpretation methods of in situ surveys concerns the use of the seismic SCPT static probe and the seismic SDMT dilatometer as well as the electrofusion tomography system to determine the geotechnical parameters of fine-grained and organic soils.

As part of the improvement of the methods of strengthening and designing engineering structures, research and analyzes are carried out on the forecasting of deformation and stability of earth structures on a weakly-bearing substrate and methods of strengthening the weak-bearing substrate with the use of columns with a transmission layer reinforced with geosynthetics. The currently conducted research concerns tensile strength and evaluation of aging and degradation processes of geosynthetics.

Technology and organization of construction, costs and prices, and economic efficiency in construction; improving the methodology of laboratory and field tests of soils and geosynthetics; stability and deformation of hydrotechnical structures and earth structures, monitoring of earth dams; land clearing; application of new materials and technologies and management in engineering; temporary and permanent drainage of building structures; improvement of methods of designing hydrotechnical structures.

Application of the observational method in the rehabilitation of old municipal waste landfills and numerical simulations of the processes taking place in the reclaimed facilities;

Assessment of geotechnical safety and the effectiveness of landfill security systems;

Study of the phenomena that determine the intensity of the spread of pollutants in the soil and water environment;

Comprehensive diagnosis of the degraded soil and water environment and modeling of pollution migration in the soil and water environment;

Research on environmental purification methods, including bioremediation and phytoremediation methods for soil contaminated with heavy metals and methods for assisted self-purification of groundwater;

Research on the impact of processes and behaviors resulting from the production and processing of various types of waste on the state of the environment;

Slope stability analysis taking into account the influence of variable climatic conditions;

Research on the geometry and deformation of historic buildings with a wooden building structure;

Contemporary principles of architectural design;

Sustainable single- and multi-family housing construction;

Town planning and spatial development;

Principles of conducting construction investments;

Designing the city landscape and rural areas;

Commemorative spaces;

Pro-environmental solutions in architecture and construction, including green architecture and ecological urban agriculture;

Department of Mechanics and Building Structures

Research and development topics are carried out at the Department of Mechanics and Structural Structures:

1. Modeling the problems of dynamics and stability as well as thermal and thermo-mechanical problems of periodically micronized or tolerant structures
periodically micronized (i.e. structures with functional gradation of material properties) using asymptotic and non-asymptotic approaches – study of the scale effect.
2. Shaping optimal material and construction solutions in construction.

The scope of scientific and research activity

The Department conducts research in the field of:
- Vibration and stability tests of periodically heterogeneous plate strips on the substrate
  heterogeneous – development of a model based on the displacement method,
  allowing to calculate the natural frequency and non-uniform critical force
  a strip (or beam) resting on a non-uniform elastic foundation.
- Investigation of heat conductivity and thermal stresses in periodic media
  two-layer – development of a model to calculate the distribution
  temperatures and displacements in such media.
- Study of free vibrations of bars with a variable cross-section – model development
  allowing to calculate the natural frequency of variable columns and beams
  sectional, full and hollow.
- Strength and structural testing of innovative construction products, including
  CFR and GFRP bars as additional and main reinforcement of lightweight reinforced concrete structures
  blocks with the addition of mineral fillers as an innovative product
  meeting WP 2021 on building partitions.
- Opportunity research
  the use of incremental mortars in the waterproofing of concrete structures,
  positive and negative pressure, the effect of liquid media on the structure
  made of concrete.
  Radon diagnostics in the aspect of the implementation of the EU Directive
  2013/59 / EURATOM of 5 December 2013. Dr hab. Inż. M. Dohojda as a member
  the advisory team at the Chief Sanitary Inspectorate, I represent the Warsaw University of Life Sciences
  as one of the five units in Poland qualified for the first measurements
  comparisons of the average annual radon concentration in buildings.
- Research on material and construction solutions for residential buildings,
  livestock and storage facilities located in Polish certified
  organic farms. Searching for links between ecological production
  food and ecological construction.
- Investigation of the possibility of using fly ash from thermal conversion
  sewage sludge for the production of normal concrete, taking into account the impact
  on the natural environment.
- Research on the impact of the location of livestock buildings on energy yield
  utility, the impact of the insulation of partitions on the demand for utility energy
  in livestock buildings.
- tests of aluminum composites with mineral and organic materials
  and the possibility of using them in housing and livestock construction
- Research related to corrosion protection of ordinary concretes
- Research related to new, so-called general (extended), average,
  non-assymptotic mathematical models for problem analysis
  dynamics and stability of thin, linear-elastic cylindrical shells having
  micronized structure in one or two directions tangent to the surface
  middle shell. Studies on the effect of cell size and the effect of differences between
  elastic and inertial properties of components in a cell on the frequency of vibrations
  own, propagation of displacement waves and to critical forces.
- Analysis of the influence of cell size and the influence of differences between properties
  elastic and inertial components in a cell on the natural frequency and
  propagation of displacement waves in thin uniperiodic shells
- cylindrical.

Research projects

Project manager – dr inż. G. Rutkowska – Decision No. 04 / 2.0 / 2019 of August 21, 2019. In connection with the implementation by the Warsaw University of Life Sciences
Agreement No.MNISW / 2019/174 / DIR of June 13, 2019. concerning the granting of funding in the competition “Innovation Incubator 2.0”, implemented as part of the non-competitive project entitled “Support for the management of scientific research and commercialization of R&D results in research units and enterprises” under the Smart Growth Operational Program 20140-2020 (Measure 4.4) “Fly ash from thermal conversion of sewage sludge to the production of ordinary concrete”.

The Department’s employees cooperate with many editorial offices of scientific and popular science magazines.

SERVICE ACTIVITY:
The Department of Mechanics and Building Structures has a modern Laboratory
Construction, where the following are performed:
- tests of physical properties of materials used in construction,
- material strength tests,
- designing normal and special concretes,
(determining the components of the concrete mix for a given strength class, taking into account
ready concrete mix requirements, taking into account the requirements for concrete, determining the method
performance of ordinary concrete, testing of special concretes – hydrotechnical).
CONSTRUCTION LABORATORY TESTS:
- AGGREGATES (natural and artificial): physical characteristics (grain size examination, examination
  organic and foreign pollutants, testing the content of clay particles and
  mineral dusts, bulk and volume density testing, moisture testing,
  study of volumetric changes, determination of aggregate susceptibility to disintegration); features
  strength (compressive strength test)
- BINDERS (Portland and metallurgical cements): physical properties of binders (time marking
  binding, determining the bulk density, determining the correct amount of water for
  obtaining the standard consistency, determination of the change in volume, determination of shrinkage)
  strength characteristics (compressive and bending strength test) – determination
  cement grade
- CONCRETES physical properties of concretes (consistency test, performance test
  volumetric trial batch, testing the porosity of the compacted concrete mix,
  test of apparent density of concrete mix, test of water absorption by weight,
  concrete moisture tests), concrete strength characteristics (test
  compressive and tensile strength), non-destructive testing of concrete quality
  (sclerometric and concreteoscope)
- MORTAR (fresh and hardened): physical characteristics of mortars (study
  air content in the mortar, test of shrinkage during the hardening period of the mortar,
  test of mortar adhesion to the substrate) mortar strength characteristics (test
  compressive and tensile strength)
- CERAMIC AND SILICATE PRODUCTS (bricks, hollow blocks, roof tiles, wall tiles and
  floor):
physical characteristics (testing the external characteristics of products, weight testing, testing
water absorption, moisture test) strength characteristics (test of resistance to
compression and bending)
- WOOD PRODUCTS AND WOOD LIKE MATERIALS: physical characteristics
  (tests of geometrical features, test of specific mass, test of humidity, test
  water absorption, swelling test), strength characteristics (test of resistance to
  tearing, bending, compression and shear)
- REINFORCING AND STRUCTURAL STEEL: (determination of characteristics
  material, checking the tear and compression strength characteristics,
  bending and twisting, checking riveted and welded connections, checking
  the type of reinforcement, checking the diameter of the bars, checking the shape of the bars,
  checking the welding characteristics)
- HEAT AND HUMIDITY PROPERTIES OF BUILDING MATERIALS
  INCLUDING MULTILAYER COMPOSITES: (conducting research in various
  thermal and humidity conditions, determination of moisture and temperature distribution in
  materials and composites, determination of thermal conductivity parameters and
  humidity of the tested samples)
BASIC MEASURING EQUIPMENT LABORATORY
CONSTRUCTION: Endurance machines with a set of accessories
(compensators for cubic and cylindrical samples, inserts for splitting samples
cylindrical and cubic, inserts for bending and pressing cement mortar samples,
inserts for bending concrete and reinforced concrete beams);
– Hydraulic testing machine H 011 Matest, measuring range for compression 75¸1500
kN, tensile, 50-250 kN Device class A
– Modernized WK-1 hydraulic press with TC 4 type strain gauge head with range
compressive strength 3N300 kN class A, the second measuring range 150¸1500 kN
– Modernized hydraulic testing machine ZD-40, measuring range on
tensile and compression 8¸400 kN equipped with a hydraulic pressure sensor and gauge
digital ZEP WN type CL 300
– Modernized mechanical testing machine ZD-2.5 for tensile forces and
with a measuring range of 2¸25 kN with the measuring head ZEP WN type CL14 i
digital meter ZEP WN type CL 300
Equipment for non-destructive testing:
– Electronic Schmidt DIGI SMIDT 2000 hammer type N Proceq for concrete quality testing
– UNIPAN type concreteoscope for testing the quality of concrete
– ELE resonant frequency meter for the determination of elastic constants
construction
– UNI 2 GANN portable hygrometer to determine air humidity and temperature,
depth and surface moisture of building materials and temperature
surface of solids
– Laboratory TDR meter for testing humidity, temperature, salinity and pressure
matrix of porous materials
A two-section climatic chamber in one housing for simulating thermal and
humidity and for storing concrete samples in the maturing process.
The volume of each chamber is 700 liters. Measuring ranges: left chamber temperature + 1 ° C to
+ 45 ° C ± 0.5 ° C humidity: from ambient level to 95% ± 3%, right chamber temperature –
30 ° C to + 30 ° C ± 0.5 ° C.
Apparatus used in concrete technology:
– Vicat apparatus for determining the beginning and end of concrete mix setting
– apparatus for determining the air content in the concrete mix
– Ve Be apparatus and Granville apparatus for determining the consistency of concrete mix
– Abramska drop cones and a table for testing the flow of concrete mix

Department of Geotechnics

Experimental research is carried out by employees and doctoral students of the Department at the Geotechnical Laboratory. Prof. Władysław Kollis and in the laboratories of the “Laboratory Water Center of the Warsaw University of Life Sciences”. The laboratories are equipped with modern equipment for laboratory and field tests, incl. in three-axis apparatus for testing strain-strength characteristics in the field of small deformations with the measurement of acoustic wave velocity, automatic three-axis apparatus with measurement of micro-displacements, cyclic three-axis apparatus, consolidometer and three-axis apparatus for testing unsaturated soils, resonance column, cylindrical torsion apparatus for static and cyclic loads and static CPTU, SCPT, RCPT, DMT and SDMT probes, electrofusion tomography system, apparatus for testing longitudinal and transverse permeability and strength of geosynthetics in the temperature range from -70 to +280 oC.

Department of Hydrotechnics, Technology and Works Organization

The areas of research and teaching activity of the department’s employees include: technology and organization of construction, costs and prices, and economic efficiency in construction; improving the methodology of laboratory and field tests of soils and geosynthetics; stability and deformation of hydrotechnical structures and earth structures, monitoring of earth dams; land clearing; application of new materials and technologies and management in engineering; temporary and permanent drainage of building structures; improvement of methods of designing hydrotechnical structures.
The employees of the Department take part in numerous projects, including: BIOSTRATEG3 / 347837/11 / NCBR / 2017 “Technological innovations and a system for monitoring, forecasting and operational planning of drainage activities for precise water management on the scale of a drainage facility” (INOMEL).
The Department has a Laboratory of Physical and Hydraulic Properties of Soils and Geosynthetics, a Hydraulic Laboratory equipped with test stands with measuring equipment, enabling modeling of flows with an intensity of up to 200 dm3 / s in open channels with a constant and adjustable bottom slope and on models of water structures and specialized software for costing and scheduling of works.

Department of Revitalization and Architecture

The Department of Revitalization and Architecture conducts various studies with a wide profile of activity, including:

application of the observational method in the rehabilitation of old municipal waste landfills and numerical simulations of the processes taking place in the reclaimed facilities;
assessment of geotechnical safety and the effectiveness of landfill security systems;
study of the phenomena that determine the intensity of the spread of pollutants in the soil and water environment;
comprehensive diagnosis of the degraded soil and water environment and modeling the migration of pollutants in the soil and water environment;
research on environmental purification methods, including bioremediation and phytoremediation methods for soil contaminated with heavy metals and methods for assisted self-purification of groundwater;
studies on the environmental impact of processes and behaviors resulting from the production and processing of various types of waste;
analysis of slope stability taking into account the influence of variable climatic conditions;
research on the geometry and deformation of historic buildings with a wooden building structure;
contemporary principles of architectural design;
sustainable single- and multi-family housing construction;
town planning and spatial development;
principles of conducting construction investments;
designing the city landscape and rural areas;
commemorative spaces;
pro-environmental solutions in architecture and construction, including green architecture and ecological urban agriculture;