Influence of early age loading on compressive strength of M25 fly ash concrete

In this study, the influence of early age loading on compressive strength of fly ash concrete is investigated. M25 grade fly ash concrete with w/c of 0.45 and 30% replacement of cement by class ‘F’ fly ash is considered. Early age loads of nearly about 70%, 80% and 90% of compressive strengths corre...

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Bibliographic Details
Published in:Materials today : proceedings 2023-05
Main Authors: Vivek, K.S., Vinod Kumar, K., Subba Reddy, Y.V.
Format: Article
Language:English
Subjects:
28-day strength
Compressive strength
Concrete
Early age loading
Fly ash
M25
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Summary:In this study, the influence of early age loading on compressive strength of fly ash concrete is investigated. M25 grade fly ash concrete with w/c of 0.45 and 30% replacement of cement by class ‘F’ fly ash is considered. Early age loads of nearly about 70%, 80% and 90% of compressive strengths corresponding to 1-day, 3-day and 7-day aged specimens are determined by testing a set of nine cube specimens initially. Later these loads are applied on a total of thirty six cube specimens of respective ages to find out the effect on 28-day compressive strength. From the obtained results it is observed that the 28-day compressive strength of 1-day, 3-day and 7-day aged fly ash concrete specimens increased for 70% and 80% early loading in comparison to the non-early loaded specimens. However reduction of strength is noticed in the case of 90% early loaded specimens irrespective of age.
ISSN:2214-7853
2214-7853
DOI:10.1016/j.matpr.2023.05.100