Construction physics

Research team

We comprehensively measure physical parameters associated with the transfer and storage of heat and moisture in building materials, structures and spaces. We measure and perform calculations in the field of building and spatial acoustics and perform laboratory measurements of sound insulation of building elements.

For research in the field of building physics, especially building thermal technology, we use top-of-the-line equipment in the form of climatic double rooms or experimental facades with a controlled internal environment and monitored fields with samples exposed to natural weather effects. I use equipment for measuring the thermal-moisture properties of building materials (Heat Flow Meter, desiccators, vacuum cleaners, precision scales, dryers, etc.). In the acoustic laboratory, we focus on building and spatial acoustics. In addition to modern instrumentation, we have our own testing equipment according to ČSN EN ISO 10140-5 for laboratory measurement of sound insulation of building elements (walls, ceilings, suspended ceilings and double floors).

We verify laboratory measured data using computer models that we develop and modify. We focus on simulations of heat and moisture transfer, simulations of microbiological risks, optimization of the design of construction structures and entire buildings, simulations of summer operation and the risk of summer overheating, design and detailed assessment of fixed shading elements

The state-of-the-art equipment of our laboratories allows us to learn most of the important material characteristics and, based on them, find applications for new materials in building structures or propose further steps in their development. We focus on wood-based materials, natural and recycled materials, the application of which is growing in the construction industry.

Main team activities


In the field of building thermal technology:
  • We measure the thermal-moisture characteristics of building materials and constructions.
  • We diagnose the thermal-moisture behavior of structures and spaces of real buildings.
  • We optimize the designs of building structures with regard to moisture and microbiological risks.
  • We computer-simulate the transfer of heat, humidity and the risk of mold growth.
  • We determine hygroscopic sorption properties, absorbency, open porosity, bulk density.
  • We measure in-site and analyze the thermal and humidity problems of buildings.

In the area of building acoustics:
  • We measure and carry out laboratory measurements of air and footfall soundproofing of building structures and lateral transmission of sound through double floors and suspended ceilings.
  • We evaluate the spatial acoustic parameters of buildings.
  • We model the propagation of sound in the outdoor environment using advanced methods for calculating the insertion attenuation of noise barriers.
  • We focus on building, spatial and urban acoustics.

We have our own testing equipment according to ČSN EN ISO 10140-5 for laboratory measurement of sound insulation of building elements (walls, ceilings, suspended ceilings and double floors).

Results

1

Envilop

Envilop is a proposal for a solution for a lightweight panel-type perimeter skin based on wood. The light envelope was designed as part of the Intelligent Buildings project (CZ.1.05/3.1.00/13.0283) from the Operational Program Research and Development for Innovations of the Ministry of Education and Culture, which is financed by the EU and the state budget of the Czech Republic.

Show more

Equipment

Area samples of construction structures and products with dimensions up to 3.0 x 3.0 x 0.6 m3, test space 2 x 13.5 m3 , temperature range -20 °C to +80 °C, relative humidity range 10 to 95 %, measurement of heat transfer coefficient, simulation of sun, rain, pressure differences. design/Stavebnitepelnatechnika/DSC_1318.jpg
Area samples with dimensions up to 1.0 × 1.0 × 0.6 m3, test area 2 x 1.0 m3

, temperature range –40 °C to +180 °C, relative humidity range 10 to 98%. design/Stavebnitepelnatechnika/IMG_7016.jpg
Accurate handheld sound analyzers with 1/1 and 1/3 octave filters, dynamic range 120 dB. Tymyfoto/Stavebniakustika/DSC_9251copy.jpg
Software for simulations of sound propagation in closed spaces, calculations of sound pressure levels, reverberation time and other acoustic parameters. Tymyfoto/Stavebniakustika/Jednolodni-faktorC-bezuprav-2zdroje-LA.png

Measurements and computer simulations of thermal-humidity and microbiological behavior of building materials, constructions and entire buildings. design/Stavebnitepelnatechnika/DSC_1318.jpg

Six test fields with a controlled environment on the interior side and natural weathering on the exterior side for long-term testing. design/Stavebnitepelnatechnika/DSC_1089copy.jpg
Heat Flow Meter, desiccators, vacuum cleaner, precision scales, dryers, IR camera with high resolution, recording centers and sensors for measuring temperatures, relative humidity, heat flow density, pressure, mass moisture of wood, solar radiation, wind speed and more. design/Stavebnitepelnatechnika/IMG_1366_ph.jpg
It focuses on building and spatial acoustics. The laboratory has its own testing equipment according to ČSN EN ISO 10140-5 for laboratory measurement of sound insulation of building elements (walls, ceilings, suspended ceilings and double floors). Tymyfoto/Stavebniakustika/DSC_9216copy.jpg
Knocking device for measuring the transmission of footsteps sound according to ČSN EN ISO 10140 (in the laboratory) and according to ČSN EN ISO 16283-2 (in-situ). Tymyfoto/Stavebniakustika/DSC_9247copy.jpg
Omnidirectional speaker (dodecahedron) for measuring air sound insulation according to ČSN EN ISO 10140 (in the laboratory) and according to ČSN EN ISO 16283-1 (in-situ) with an amplifier with a built-in noise generator. Tymyfoto/Stavebniakustika/DSC_9219copy.jpg
Software for multi-channel sound measurement, sound insulation tests in the laboratory and on construction sites. It connects measuring devices into a system optimized for measurement according to the relevant standard procedures. Tymyfoto/Stavebniakustika/DSC_9248copy.jpg