Fly ash as supplementry material in concrete : A review

The use of supplementary cementitious materials such as fly ash has seen a steady growth among the recent studies as an economical and effective solution for partial cement replacement. A challenging issue when replacing cement is that the supplementary materials affect concrete properties different...

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Bibliographic Details
Published in:IOP conference series. Earth and environmental science 2019-11, Vol.357 (1), p.12025
Main Authors: Lamine Zeggar, Mohamed, Azline, Noor, Azizi Safiee, N.
Format: Article
Language:English
Subjects:
Calcium
Cement
Compressive strength
Concrete
Concrete industry
Concrete properties
Concrete technology
Experimentation
Fly ash
Rheological properties
Rheology
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Summary:The use of supplementary cementitious materials such as fly ash has seen a steady growth among the recent studies as an economical and effective solution for partial cement replacement. A challenging issue when replacing cement is that the supplementary materials affect concrete properties differently according to various factors such as: the grade of cement, the percentage of replacement, curing periods and environment condition. In order to determine how the concrete compressive strength and its rheological properties can be affected by fly ash, a review on the previous study on concrete fly ash mixtures subjected to various experimentation factors in terms of its main properties has been carried out. The outcomes showed that low calcium fly ash content increases concrete compressive strength of hardened concrete for a period ranging between 28 to 56 days and enhances the concrete rheological properties when the substitution percentage is not too high. Consequently, when fly ash is used as a substitute of cement with a medium quantity, it has an economical and sustainable effect on the cement and concrete industry.
ISSN:1755-1307
1755-1315
DOI:10.1088/1755-1315/357/1/012025