Substitution of cement by pozoolan active admixtures
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F18%3A00322567" target="_blank" >RIV/68407700:21110/18:00322567 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Substitution of cement by pozoolan active admixtures
Original language description
This paper deals with replacing of Portland cement by active admixtures. There are more reasons for replace cement by admixtures. Pozzolan active admixtures, which are actively involved in hydration of concrete can improve properties of hardened concrete. Partial substitute of cement by admixtures can reduce the impact of cement production on CO2 emissions. Production of one tonne of Portland cement releases one tonne of carbon dioxide into the atmosphere. Due to the fact that high strength concrete contains more cement than concrete of normal strength classes and is becoming more and more fre-quently used material, there is no presumption of reduction in its production. This paper deals with the replacement of cement by metakaolin, fly ash and silica fume. Substitution of cement by admixtures was for 5%, 10%, 20% 30%, 50% and 80% of weight of cement. Substitution of cement by silica fume, metakaolin and fly ash up to 20% had a positive influence on the compressive strength.
Czech name
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Czech description
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Classification
Type
O - Miscellaneous
CEP classification
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OECD FORD branch
20102 - Construction engineering, Municipal and structural engineering
Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů