Project detail

The elimination of the negative impact of zinc in Portland cement by accelerating concrete admixtures

Duration: 01.01.2019 — 31.12.2022

Funding resources

Czech Science Foundation - Standardní projekty

- whole funder (2019-03-01 - 2021-12-31)

On the project

Beton je stále nejběžněji používaným stavebním materiálem. Hlavní složkou betonu je portlandský cement, který se vyrábí mletím portlandského slínku se sádrovcem. K cementu jsou z ekologických i ekonomických důvodu přidávány sekundární materiály jako např. struska. Z důvodu stále častějšího používání druhotných produktů obsahujících zinek se neustále zvyšuje obsah zinku ve slínku i v sekundárních surovinách. V portlandském slínku se obsah zinku zvyšuje především díky používání odpadů a pneumatik, které se používají jako palivo v rotačních pecích. V druhotných surovinách může být přítomen již v surovinách, ze kterých se prostřednictvím výrobního procesu dostává do druhotných surovin a následně do betonu. Největším problémem s cementem obsahujícím zinek je retardace hydratace a zhoršení mechanických vlastností. Hlavním cílem navrhovaného projektu je lépe popsat mechanismus působení zinku v cementu a najít vhodné cesty jak zabránit jeho negativním vlivům pomocí použití akcelerátorů hydratace na různé bázi.

Description in English
Concrete is still the most commonly used building material. The main component of concrete is Portland cement that is produced by grinding of clinker with gypsum. Thank to benefits from economic and ecological point of view the secondary raw materials like slag are also used. Due to increasing use of secondary products containing zinc, the amount of zinc in the clinker and secondary raw materials is increasing in recent years. Portland clinker can gain zinc from solid waste or tires which are widely used as a fuel for a burning in rotary kiln. In the case of secondary raw materials, zinc may be present in the primary material, where the manufacturing process leads to its removal and concentrating to "waste" which is used in the cement industry. The biggest problem with cement dopped with zinc is the retardation of hydration and decreasing of mechanical properties. The main aim of this project is better understanding to mechanism of action and design of different ways for prevention before potential negative effects of its action by hydration accelerators based on different bases.

Keywords
Zinek;Portlandský cement;Hydratace;Mechanické vlastnosti;Akcelerátor hydratace

Key words in English
Zinc;Portland cement;Hydration;Mechanical properties;Accelerating concrete admixtures

Mark

19-16646S

Default language

Czech

People responsible

Šiler Pavel, Ing., Ph.D. - principal person responsible

Units

Faculty of Chemistry
- beneficiary (2018-04-04 - not assigned)
Materials Research Centre
- co-beneficiary (2019-01-01 - 2022-12-31)

Results

JANČA, M.; ŠILER, P.; OPRAVIL, T.; KOTRLA, J. Improving the dispersion of silica fume in cement pastes and mortars. In International Conference Building Materials, Product and Technologies. IOP Conference Series: Materials Science and Engineering. 2019. p. 1-7. ISSN: 1757-8981.
Detail

KUZIELOVA, E.; SLANÝ, M.; ŽEMLIČKA, M.; MÁSILKO, J. Accelerated carbonation of oil-well cement blended with pozzolans and latent hydraulic materials. Journal of Thermal Analysis and Calorimetry, 2023, vol. 148, no. 19, p. 9963-9977. ISSN: 1388-6150.
Detail

ŠILER, P.; KOLÁŘOVÁ, I.; BEDNÁREK, J.; JANČA, M.; MÁSILKO, J.; NOVOTNÝ, R.; OPRAVIL, T. The effect of zinc, water to binder ratio and silica fume on the hydration and mechanical properties of Portland cement mixtures. In 22st International Conference on Building Materials, Products and Technologies (ICBMPT 2019). IOP Conference Series: Materials Science and Engineering. England and Wales: IOP Publishing, 2019. p. 1-8. ISSN: 1757-8981.
Detail

NOVOTNÝ, R.; BARTONÍČKOVÁ, E.; KOTRLA, J. The effect of burnt lime addition on hydration of Ultra-high performance cementitious composites. In 21st International Conference on Building Materials, Products and Technologies (ICBMPT 2018). IOP Conference Series: Materials Science and Engineering. England: IOP Publishing, 2019. p. 1-7. ISSN: 1757-8981.
Detail

PALOU, M.; KUZIELOVA, E.; ŽEMLIČKA, M.; MÁSILKO, J.; TKACZ, J. Insights into the hydration of Portland cement under hydrothermal curing. Journal of Thermal Analysis and Calorimetry, 2019, vol. 138, no. 6, p. 4155-4165. ISSN: 1388-6150.
Detail

PALOU, M.; BOHÁČ, M.; NOVOTNÝ, R.; ŽEMLIČKA, M.; KUZIELOVA, E. Use of calorimetry and thermal analysis to assess the heat of supplementary cementitious materials during the hydration of composite cementitious binders. Journal of Thermal Analysis and Calorimetry, 2020, vol. 142, no. 1, p. 97-117. ISSN: 1388-6150.
Detail

ŠVEC, J.; ŠILER, P.; MÁSILKO, J.; NOVOTNÝ, R.; KOPLÍK, J.; JANČA, M.; HAJZLER, J.; MATĚJKA, L.; OPRAVIL, T.; KOLÁŘOVÁ, I. Simultaneous thermogravimetric and differential thermal analysis determination of products formed during hydration of blended Portland cement doped with zinc. Journal of Thermal Analysis and Calorimetry, 2020, no. 142, p. 1749-1758. ISSN: 1388-6150.
Detail

ŠILER, P.; KOLÁŘOVÁ, I.; BEDNÁREK, J.; HAJZLER, J.; MARKO, M.; ŠOUKAL, F.; OPRAVIL, T.; JANČA, M.; ZLÁMAL, M.; KOPLÍK, J.; MÁSILKO, J.; NOVOTNÝ, R.; MATĚJKA, L.; ŠVEC, J.; KUZIELOVA, E. Use of Isothermal and Isoperibolic Calorimetry to Study the Effect of Zinc on Hydration of Cement Blended with Fly Ash. Materials, 2020, vol. 13, no. 22, p. 1-18. ISSN: 1996-1944.
Detail

KUZIELOVA, E.; ŽEMLIČKA, M.; JANČA, M.; ŠILER, P.; PALOU, M. Later stages of Portland cement hydration influenced by different portions of silica fume, metakaolin and ground granulated blast-furnace slag. Journal of Thermal Analysis and Calorimetry, 2020, vol. 142, no. 1, p. 339-348. ISSN: 1388-6150.
Detail

JANČA, M.; ŠILER, P.; ALEXA, M. Study of the influence of water coefficient on porosity and mechanical properties of high‑performance concrete. Studentská odborná konference - CHEMIE JE ŽIVOT - sborník příspěvků. Brno: Vysoké učení technické v Brně, Fakulta chemická, Purkyňova 464/118, 612 00 Brno, 2020. p. 121-128. ISBN: 978-80-214-5921-2.
Detail

CATAURO, M.; ŠILER, P.; MÁSILKO, J.; RISOLUTI, R.; CIPRIOTI, S. Synthesis, Structural, Morphological and Thermal Characterization of Five Different Silica-Polyethylene Glycol-Chlorogenic Acid Hybrid Materials. Polymers, 2021, vol. 13, no. 10, p. 1-13. ISSN: 2073-4360.
Detail

KUZIELOVA, E.; SLANÝ, M.; ŽEMLIČKA, M.; MÁSILKO, J.; PALOU, M. Phase Composition of Silica Fume-Portland Cement Systems Formed under Hydrothermal Curing Evaluated by FTIR, XRD, and TGA. Materials, 2021, vol. 14, no. 11, p. 1-18. ISSN: 1996-1944.
Detail

PALOU, M.; NOVOTNÝ, R.; KUZIELOVA, E.; ŽEMLIČKA, M.; ČEPČIANSKA, J.; PODHORSKA, J. The influence of supplementary cementitious materials on the hydration of Dyckerhoff G-Oil cement. Journal of Thermal Analysis and Calorimetry, 2022, vol. 147, no. 18, p. 9935-9948. ISSN: 1388-6150.
Detail

MATĚJKA, L.; ŠILER, P.; NOVOTNÝ, R.; ŠVEC, J.; MÁSILKO, J.; KOPLÍK, J.; ŠOUKAL, F. The thermal analysis of zinc oxide‑contaminated Portland cement blended with thiocyanates and determination of their effect on hydration and properties. Journal of Thermal Analysis and Calorimetry, 2022, no. 2022-11-13, ISSN: 1588-2926.
Detail

KUZIELOVA, E.; SLANÝ, M.; ŽEMLIČKA, M.; ŠILER, P.; MÁSILKO, J.; PALOU, M. Thermal stability of the phases developed at high-pressure hydrothermal curing of class G cement with different pozzolanic and latent hydraulic additives. Journal of Thermal Analysis and Calorimetry, 2022, vol. 147, no. 18, p. 9891-9902. ISSN: 1588-2926.
Detail

DAMBRAUSKAS, T.; DAVIDOVICIENE, D.; BALTAKYS, K.; EISINAS, A.; JASKUNAS, A.; ŠILER, P.; RUDELIS, V.; ŠVEDAITĖ, E. Effect of intercalated metal ions on the specific surface area and porosity of dibasic calcium silicate hydrate. SURFACES AND INTERFACES, 2022, vol. 33, no. OCT 2022, ISSN: 2468-0230.
Detail

KUZIELOVA, E.; TATARKO, M.; SLANÝ, M.; ŽEMLIČKA, M.; MÁSILKO, J.; NOVOTNÝ, R.; PALOU, M. Early and middle stages of multicomponent cement hydration under the effect of geothermal water and increased temperatures. GEOTHERMICS, 2023, vol. 108, no. únor, ISSN: 0375-6505.
Detail

BEDNÁREK, J.; MATĚJOVÁ, L.; KOUTNÍK, I.; VRÁBLOVÁ, M.; CRUZ, C.; STRAŠÁK, T.; ŠILER, P.; HRBÁČ, J. Revelation of high-adsorption-performance activated carbon for removal of fluoroquinolone antibiotics from water. Biomass Conversion and Biorefinery, 2022, no. 21 march 2022, ISSN: 2190-6815.
Detail

BEDNÁREK, J.; MATĚJOVÁ, L.; JANKOVSKÁ, Z.; VAŠTYL, M.; SOKOLOVÁ, B.; PEIKERTOVÁ, P.; ŠILER, P.; VERNER, A.; TOKARSKÝ, J.; KOUTNÍK, I.; ŠVÁB, M.; VRÁBLOVÁ, M. The influence of structural properties on the adsorption capacities of microwave-assisted biochars for metazachlor removal from aqueous solutions. Journal of Environmental Chemical Engineering, 2022, vol. 10, no. 3, ISSN: 2213-3437.
Detail

ŠILER, P.; KOLÁŘOVÁ, I.; NOVOTNÝ, R.; MÁSILKO, J.; BEDNÁREK, J.; JANČA, M.; KOPLÍK, J.; HAJZLER, J.; MATĚJKA, L.; MARKO, M.; POKORNÝ, P.; OPRAVIL, T.; ŠOUKAL, F. Application of Isothermal and Isoperibolic Calorimetry to Assess the Effect of Zinc on Hydration of Cement Blended with Slag. Materials, 2019, vol. 12, no. 18, p. 1-18. ISSN: 1996-1944.
Detail

Responsibility: Šiler Pavel, Ing., Ph.D.