Impact Resistance and Strength Development of Fly Ash Based Self-compacting Concrete

The development of self-compacting concrete using alternative materials is expanding in recent years due to the technical and economic benefits of the mixture. This study focuses on the structural and compositional behavior of sodium hydroxide (NaOH)-activated fly ash based self-compacting concrete...

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Bibliographic Details
Published in:SILICON 2022, Vol.14 (2), p.481-492
Main Authors: Kumar, Selvaraj, Murthi, Palanisamy, Awoyera, Paul, Gobinath, Ravindran, kumar, Sathis
Format: Article
Language:English
Subjects:
Caustic soda
Cement
Chemistry
Chemistry and Materials Science
Concrete mixing
Environmental Chemistry
Fly ash
Heat resistance
Hydration
Impact resistance
Inorganic Chemistry
Lasers
Materials Science
Mineralogy
Mixtures
Morphology
Optical Devices
Optics
Original Paper
Photonics
Physical properties
Polymer Sciences
Portland cements
Sand & gravel
Self-compacting concrete
Sodium
Sodium hydroxide
Tensile strength
Workability
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Summary:The development of self-compacting concrete using alternative materials is expanding in recent years due to the technical and economic benefits of the mixture. This study focuses on the structural and compositional behavior of sodium hydroxide (NaOH)-activated fly ash based self-compacting concrete (SCC). Fly ash was partially replaced with Ordinary Portland Cement from 0–30%. The tests performed on concrete samples include workability, strength, microstructural, and impact resistance. The results showed that activated fly ash reduces the heat of the hydration process of the concrete mixture but enhances pozzolanic reactions, which led to increased strength properties. The addition of activated fly ash modifies the mineralogy of the concrete, as evident in strength characteristics. The best performance of the activated fly ash based SCC, in terms of strength, was found at 10–15% substitutions, which can somewhat reduce the cost of production of SCC and strength improvement advantage.
ISSN:1876-990X
1876-9918
DOI:10.1007/s12633-020-00842-2