Strength behavior of green concrete by using fly ash and silica fume

Fly ash and silica fume, when used properly, improve the mechanical and durability properties of concrete. Some specialists have recently raised concerns about the fly ash and silica-fume concrete's long-term compressive strength. In this investigation, high calcium fly ash from the NLC Neyveli...

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Bibliographic Details
Published in:Materials today : proceedings 2023-05
Main Authors: Anish, C., Venkata Krishnaiah, R., Vijaya Bhaskar Raju, K.
Format: Article
Language:English
Subjects:
Compressive strength
Flexural strength
Fly ash
Silica fume
Split tensile strength
Superplasticizer
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Summary:Fly ash and silica fume, when used properly, improve the mechanical and durability properties of concrete. Some specialists have recently raised concerns about the fly ash and silica-fume concrete's long-term compressive strength. In this investigation, high calcium fly ash from the NLC Neyveli, which is more cementitious and pozzolanic, is used. If pozzolanic material ingests the extra calcium from C class fly ash, a better outcome may be anticipated. Researchers have studied this effect by substituting silica fume. The rate of strength property gains up to 56 days of curing was determined for conventional concrete (CC), fly ash concrete (FAC), silica fume concrete (SFC), and fly ash silica fume concrete (FASFC), with and without superplasticizer. A study on replacing 50% of the cement weight with fly ash and another 20% of the fly ash weight with silica fume in standard M30 grade concrete was done (SP). It has been established that strengthening cement concrete with fly ash, silica fume, and superplasticizer.
ISSN:2214-7853
2214-7853
DOI:10.1016/j.matpr.2023.04.604