Předměty na K123

123MED - Materials engineering


Lectures: Prof. Igor Medved ( igor.medved@fsv.cvut.cz )


Labs: Ing. Jaroslav Pokorný, PhD. ( jaroslav.pokorny@fsv.cvut.cz )

Informace k předmětu:

Information on the course

Merry Christmas and Happy New Year!

A written test (30 %)
A presentation of a topic concerning materials engineering (30 %)
Laboratory reports (40 %)
Participation in laboratory exercises - only one absence is allowed.

There are two written tests. Both will take place at the end of term.
One test (about 15 min) is for credit assessment, and it will contain questions concerning lab exercises.
The other test (about 30 min) is a 30 % part of the grading (see above), and it will contain questions concerning topics from lectures.

Lectures are not mandatory.

  • Basic properties of materials: bulk density, matrix density, relative density, porosity, gravimetric and picnometric methods, gas adsorption porosimetry and mercury intrusion porosimetry (presentation)
  • Thermal analyses: experimental techniques for measurement of thermal properties of materials - differential scanning calorimetry and thermodilatometry (presentation)
  • Moisture transport: water vapor diffusion, liquid moisture transport, water suction measurement, Fick's Law, diffusion equation (presentation)
  • Bolztmann-Matano method: the basic idea, formula for a diffusion coefficient, example for the moisture diffusivity in a porous concrete (presentation)
  • Thermal properties: the heat, temperature, internal energy, and entropy. First and Second Laws of Thermodynamics (presentation)
  • Heat conduction 1: Fourier's Law, thermal conductivity, equation of heat conduction, thermal diffusivity (presentation)
  • Heat conduction 2: Example of 1D heat conduction, separation of variables, analytical solution via an infinite series (presentation)
  • Measurement methods: the flash method for the measurement of the thermal diffusivity and the hot-wire method for the measurement of the thermal conductivity (presentation)

Laboratory exercises

Be aware that only one absence in laboratory exercises is allowed.

1. Introductory exercise – work safety, basic rules of laboratory work safety, standard laboratory protocol, visiting of laboratories.
Presentation: Introduction

2. Basic properties of porous building materials - experimental determination of bulk density, matrix density, vacuum saturation moisture content, total open porosity – gravimetric method, vacuum saturation method, pycnometric method.
For further information see: here
Presentation: Basic physical properties

3. Water vapor transport - cup method (wet/dry), measurement of water vapor diffusion coefficient and water vapor resistance factor.
+ Liquid moisture transport - experimental determination of water absorption coefficient and apparent moisture diffusivity
For further information see: here
Presentation: transport of liquid water and water vapor

4. Thermal properties of building materials – assessment of thermal conductivity, specific heat capacity, thermal diffusivity for dry materials as well as in dependence on moisture content rising
For further information see: here
Presentation: heat transfer

5. Dynamic viscosity of fluid, newtonian fluid, non-newtonian fluid, Stokes law, measurement of viscosity of chosen liquids.
+ Working with microscope - samples preparation, texture of building materials
For further information see: here
Presentation: viscosity

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© Ing. Lukáš Fiala 2009. All rights reserved

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