Project detail

Výzkum chování kompozitů na bázi anorganických matric v extrémních podmínkách Výzkum chování kompozitů na bázi anorganických matric v extrémních podmínkách Výzkum chování kompozitů na bázi anorganických matric v extrémních podmínkách

Duration: 01.01.2014 — 31.12.2016

Funding resources

Czech Science Foundation - Standardní projekty

- whole funder (2013-04-16 - not assigned)

On the project

Projekt se zabývá analýzou chování kompozitů na bázi anorganických matric v extrémních podmínkách (chemicky agresivní prostředí a extrémní teploty). Jedná se o kompozity primárně určené pro stavebnictví. Matrice vznikající hydratací v současnosti standardně používaných pojiv (např. portlandského cementu atd.) vykazují v extrémních podmínkách jak z hlediska chování, tak životnosti poměrně výrazné limity. Podrobná analýza mechanismů jejich degradace je prostředkem pro eliminaci těchto negativních vlivů. Dalším z perspektivních přístupů je výzkum v oblasti pojiv s odlišnými principy zpevňování. Výrazný potenciál zejména pro speciální aplikace vykazují například tzv. alkalicky aktivované materiály. Tyto materiály svou strukturou leží na rozhraní mezi klasickými hydratovanými anorganickými pojivy, skelnými a keramickými materiály. Toto je předurčuje jako velmi vhodné pojivo pro kompozitní materiály určené do extrémních prostředí

Description in English
The project deals with the analysis of behaviour of composites based on inorganic matrices under extreme conditions (chemically aggressive environment and extreme temperatures). These include the composites primarily intended for building industry. Under extreme conditions, the matrices created by hydration of currently used standard binders (e.g. Portland cement, etc.) show relatively considerable limits in terms of their behaviour and life time. The detailed analysis of mechanisms of their degradation provides a tool to eliminate such negative influences. Another promising approach consists in the research in the field of binders with different principles of reinforcement. For example, the materials known as alkali-activated materials show a marked potential, especially for specific applications. With respect to their structure, the aforesaid materials lie on the boundary between the traditional hydrated inorganic binders, glassy and ceramic materials. Therefore, they are predetermined to become binders very appropriate for composite materials designed for extreme environments.

Keywords
Kompozitní materiály, anorganická matrice, alkalicky aktivované materiály, chemicky agresivní prostředí, extrémní teploty, komplexní analýza, optimalizace složení, maximální odolnost.

Key words in English
Composite materials, inorganic matrix, alkali-activated materials, chemically aggressive environment, extreme temperatures, complex analysis, composition optimization, maximum resistance.

Mark

GA14-25504S

Default language

Czech

People responsible

Dufka Amos, Ing., Ph.D. - principal person responsible

Units

Institute of Technology of Building Materials and Components
- (2014-01-01 - not assigned)

Results

FIEDLEROVÁ, M.; MELICHAR, T.; DUFKA, A.; BYDŽOVSKÝ, J. Selection of alternative additives and their influence on high-temperature resistance of repair mortars. In Proceedings of the Conference on the Rehabilitation and Reconstruction of Buildings (CRRB 2014). Advanced Materials Research. Switzerland: Trans Tech Publications, 2014. p. 181-184. ISBN: 978-3-03835-506-9. ISSN: 1022-6680.
Detail

DUFKA, A.; MELICHAR, T. The development of sprayed concrete for extreme temperatures. In Binders, Materials and Technologies in Modern Construction. Advanced Materials Research. Switzerland: Trans Tech Publications, 2015. p. 133-137. ISBN: 978-3-03835-452-9. ISSN: 1022-6680.
Detail

DUFKA, A.; DROCHYTKA, R. Možnosti využití rentgenové tomografie ve stavebních materiálech. Zpravodaj WTA CZ, 2014, roč. 2014, č. 3-4, s. 17-19. ISSN: 1213-7308.
Detail

DUFKA, A.; BROŽOVSKÝ, J.; MELICHAR, T. Development of Repair Mortars Based on Alkali Activated Materials for Application in Chemically Aggressive Surroundings. In Proceedings of the Conference on the Rehabilitation and Reconstruction of Buildings (CRRB 2014). Advanced Materials Research. Switzerland: Trans Tech Publications, 2015. p. 98-104. ISBN: 978-3-03835-506-9. ISSN: 1022-6680.
Detail

MELICHAR, T.; BYDŽOVSKÝ, J.; DUFKA, A. Influence of binder and filler modification of composite materials for extreme conditions on development in time parameters. In Ecological and New Building Materials and Products. Advanced Materials Research. Switzerland: Trans Tech Publications, 2015. p. 164-169. ISBN: 978-3-03835-587-8. ISSN: 1022-6680.
Detail

ROVNANÍK, P.; MIKHAILOVA, O.; DUFKA, A. VLIV SLOŽENÍ ALKALICKY AKTIVOVANÉ STRUSKY NA PRŮBĚH HYDRATAČNÍ REAKCE A MECHANICKÉ VLASTNOSTI. In 37. Mezinárodní český a slovenský kalorimetrický seminář. Pardubice: Univerzita Pardubice, 2015. s. 81-84. ISBN: 978-80-7395-899-2.
Detail

MIKHAILOVA, O.; ROVNANÍK, P. Effect of polymer admixtures on alkali-activated slag mortars. In Ecological and New Building Materials and Products. Advanced Materials Research. Switzerland: Trans Tech Publications, 2015. p. 145-150. ISBN: 978-3-03835-587-8. ISSN: 1022-6680.
Detail

ROVNANÍK, P.; DUFKA, A. EFFECT OF THE AGGREGATE TYPE ON THE PROPERTIES OF ALKALI-ACTIVATED SLAG SUBJECTED TO HIGH TEMPERATURES. Materiali in tehnologije, 2015, vol. 49, no. 5, p. 709-713. ISSN: 1580-2949.
Detail

BRODŇAN, M.; KOTEŠ, P.; VANĚREK, J.; DROCHYTKA, R. Corrosion Determination of Reinforcement Using Electrical Resistance Method. Materiali in tehnologije, 2017, vol. 51, no. 1, p. 85-93. ISSN: 1580-2949.
Detail

DUFKA, A.; MELICHAR, T. Composites based on inorganic matrices for exterme exposure conditions. Materiali in tehnologije, 2016, vol. 50 (2016), no. 1, p. 147-151. ISSN: 1580-2949.
Detail

MIKHAILOVA, O.; ROVNANÍK, P. Effect of organic additives on shrinkage of AAS mortars. In NDT konference v České republice 2015. Brno: Brno University of Technology and CNDT, 2016. p. 25-30. ISBN: 978-80-214-5315-9.
Detail

DUFKA, A.; MELICHAR, T. The development of materials based on alkali-activated fly ash designed for special applications. In Binders, Materials and Technologies in Modern Construction II. Materials Science Forum. 2016. Switzerland: Trans tech publications Ltd, 2016. p. 114-119. ISBN: 978-3-03835-740-7. ISSN: 0255-5476.
Detail

ROVNANÍK, P.; FIALOVÁ, B. Effect of curing regime on the properties of alkali-activated slag/limestone mortar subjected to high temperatures. In 14th International Conference Silicate Binders, ICBM 2015. Materials Science Forum. Switzerland: Trans Tech Publications, 2016. p. 37-41. ISBN: 9783038357407. ISSN: 0255-5476.
Detail

MELICHAR, T.; DUFKA, A.; BYDŽOVSKÝ, J. Changes in the composite structure and parameters after an exposure to a synergic action of various extreme conditions. Materiali in tehnologije, 2017, vol. 51 (2017), no. 2, p. 243-249. ISSN: 1580-2949.
Detail

DUFKA, A.; MELICHAR, T.; BYDŽOVSKÝ, J.; VANĚREK, J. The development of new types of secondary protection for concrete structures exposed to extreme conditions. Materiali in tehnologije, 2017, vol. 51 (2017), no. 3, p. 533-540. ISSN: 1580-2949.
Detail

DUFKA, A.; MELICHAR, T. Analysis of the Long-term Service Life of Coatings Based on Alkali-activated Matrices Exposed to Chemically Aggressive Environments. In CRRB – 18th International Conference on Rehabilitation and Reconstruction of Buildings. Procedia Engineering. Nizozemsko: Elsevier, 2017. p. 212-219. ISBN: 978-80-02-02701-0. ISSN: 1877-7058.
Detail

DUFKA, A.; MELICHAR, T. Evaluation of the Effect of Crystallization Additives on the Durability of Cement Composites. In Binders, Materials and Technologies in Modern Construction III. Materials Science Forum. 2017. Switzerland: Trans tech publications Ltd, 2017. p. 15-20. ISBN: 978-3-0357-1157-8. ISSN: 0255-5476.
Detail

DUFKA, A.; MELICHAR, T. The evaluation of the effect of crystallization additives on long term durability of cement composites. In Binders, Materials and Technologies in Modern Construction IV. Solid State Phenomena. Switzerland: Trans tech publications Ltd, 2018. p. 265-270. ISBN: 978-3-0357-1348-0. ISSN: 1012-0394.
Detail

DUFKA, A.; MELICHAR, T. The evaluation of the effect of crystallization additives on long term durability of self-compacting concrete. In Construmat 2018. IOP Conference Series: Materials Science and Engineering. Great Britain: IOP Publishing, 2018. p. 1-7. ISSN: 1757-8981.
Detail

KOTEŠ, P.; BRODŇAN, M.; VANĚREK, J. Determination of corrosion of the steel reinforcement and application to a bridge structure. In MAINTENANCE, MONITORING, SAFETY, RISK AND RESILIENCE OF BRIDGES AND BRIDGE NETWORKS. Foz do Iguaçu, Brazil: CRC PRESS-TAYLOR & FRANCIS GROUP, 2016. p. 485-485. ISBN: 978-1-138-02851-7.
Detail

ŠOMODÍKOVÁ, M.; LEHKÝ, D.; NOVÁK, D.; PODROUŽEK, J.; BENKO, V.; STRAUSS, A.; VANĚREK, J.: 8th International Conference on Bridge Maintenance, Safety and Management (IABMAS). Foz do Iguaçu (26.06.2016)
Detail

Responsibility: Dufka Amos, Ing., Ph.D.