FP6 priority
1.1.3   Nanotechnologies and Nanosciences, Knowledge-based Multifunctional Materials and New Production Processes and Devices
Title of the proposal

Database of the building materials properties relevant to hygrothermal damage modelling and simulation needs

Slovak Academy of Sciences, Institute of Construction and Architecture
Dubravska cesta 9, 842 20 Bratislava, Slovak Republic
+421 2 59427144

Research subject for a potential FP6 project

The creating of the database of the building materials properties relevant to hygrothermal damage modelling and simulation needs. The expected material properties measurements represent a minimal tests set necessary for determination of following material parameters:
- Microstructure creating parameters: composition, technology.
- Pore structure parameters.
- Microstructure correlating parameters: physico-mechanical properties and physico-chemical properties.
The measurements will be provided for different common recent but also historical building material types. The basic correlations between particular physical parameters based on valid constitution equations will be determined for each considered material.The obtained material properties database offers the possibility to create and verify the relations between a material pore structure and its transport or mechanical parameters. The general model of the pore structure of the porous materials will be developed for the prediction of the relationships between the pore structures, the heat and mass transfer parameters and the mechanical parameters. The model issues from the data obtained from the pore structure analysis and it can be applied for the analysis and estimation of the heat and mass transport parameters from complex pore structure analyses or inversely to model the microstructure with required correlating transport and other parameters considering the microstructure creating parameters. The model will be used in the material development, for the search of the optimal combination of the transport and mechanical properties as well as in the analyses of the measured transport properties. Incorporating the appropriate micromechanics-based theoretical model that captures the essential features of the temperature and capillary pressure-strain and the stress-crack width relationships will enable to couple the mechanical and physical behaviour of building materials.

Recent international cooperation of the research team

TU Dresden, Germany; CTU Prague, Czech Republic; Institut of Agrophysics, PAS, Poland

Proposerīs relevant publications related to the research subject

1. Hanecka, K., Koronthalyova, O., Matiasovsky, P.: The carbonation of autoclaved aerated concrete. Cement and Concrete Research. Cement and Concrete Research 27 (1997), pp. 589-599.
2. Koronthalyova O., Matiasovsky P.: Pore structure and gas diffusion in cementitious materials. CTU Reports, 4 (2000), pp. 61-66.
3. Koronthalyova, O., Matiasovsky, P.: Driving Rain Course Simulation Based on Daily Data. Journal of Thermal Envelope and Building Science 27 (2001), pp.51-66