Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Possibilities of Use of Isothermal and Isoperibolic Calorimetry to Study the Effect of Zinc on Hydration of Cement Blended with Fly Ash

Version 1 : Received: 10 October 2020 / Approved: 12 October 2020 / Online: 12 October 2020 (11:55:07 CEST)

How to cite: Šiler, P.; Kolářová, I.; Novotný, R.; Másilko, J.; Bednárek, J.; Janča, M.; Koplík, J.; Hajzler, J.; Matějka, L.; Marko, M.; Švec, J.; Zlámal, M.; Kuzielová, E.; Opravil, T.; Soukal, F. Possibilities of Use of Isothermal and Isoperibolic Calorimetry to Study the Effect of Zinc on Hydration of Cement Blended with Fly Ash. Preprints 2020, 2020100233 (doi: 10.20944/preprints202010.0233.v1). Šiler, P.; Kolářová, I.; Novotný, R.; Másilko, J.; Bednárek, J.; Janča, M.; Koplík, J.; Hajzler, J.; Matějka, L.; Marko, M.; Švec, J.; Zlámal, M.; Kuzielová, E.; Opravil, T.; Soukal, F. Possibilities of Use of Isothermal and Isoperibolic Calorimetry to Study the Effect of Zinc on Hydration of Cement Blended with Fly Ash. Preprints 2020, 2020100233 (doi: 10.20944/preprints202010.0233.v1).

Abstract

Increasing utilization of secondary raw materials and alternative fuels results in increasing contents of metals in cements. One of elements, the content of which keeps rising in cement is zinc. It comes to cement with secondary raw materials such as slag or fly ash or by the utilization of used tires as an alternative fuel. Zinc ions significantly prolong the hydration process in cement. This work deals with the influence of zinc ions in the form of very poorly soluble ZnO salt and easily soluble ZnCl2 and Zn(NO)3 on the hydration of cement blended with fly ash. Zinc was dosed in the range of 0.05, 0.1, 0.5 a 1% of cement weight. Final products were next analyzed using X-Ray Diffraction.

Subject Areas

Portland cement; Zinc; Isothermal calorimetry; Isoperibolic calorimetry; Fly ash

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