The comparison of the effect of Zinc compounds on hydration of ordinary Portland cement

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26310%2F19%3APU135395" target="_blank" >RIV/00216305:26310/19:PU135395 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
The comparison of the effect of Zinc compounds on hydration of ordinary Portland cement
Original language description
The content of heavy metals in various secondary industrial products and alternative fuels increases with the ecological push for reuse of waste materials and recycling. This effect is especially visible in the Portland cement properties. The cement production often involves burning of old tires as fuel and source of iron oxide and ground communal waste or industrial waste sludge as cheap fuel. The burning of waste in rotary kiln introduces heavy metal into cement clinker that have adverse effects on the properties and use of cement. Zinc has been proven to drastically increase of induction period of cement setting. The negative effect of zinc compounds on hydration of ordinary Portland cement was measured by isoperibolic calorimetry. Zinc was added to the cement in the form of two soluble salts of Zn(NO3)2 hydrate, ZnCl2 and a poor soluble compound ZnO. The concentration of zinc added was chosen as 0.1, 0.5 and 1 mass %. The results show significant retardation of cement hydration with increasing zin
Czech name
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Czech description
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Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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