Journal
APPLIED SCIENCES-BASEL
Volume 9, Issue 11, Pages -Publisher
MDPI
DOI: 10.3390/app9112266
Keywords
fly ash; fineness; compressive strength; fracture energy; critical stress intensity factor
Ask authors/readers for more resources
This study focuses on evaluating the effects of the fineness of fly ash on the strength, fracture toughness, and fracture resistance of concrete. Three fineness levels of fly ash that respectively pass sievesno. 175, no. 250, and no. 32were used. In addition to the control concrete mixture without fly ash, two fly ash replacement levels of 10% and 20% by weight of the cementitious material were selected for the concrete mixture. The experimental results indicate that the compressive strength of the fly ash concrete decreases with the increase in the replacement ratio of fly ash but increases in conjunction with the fineness level of fly ash. The presence of finer fly ash can have beneficial effects on the fracture energy (G(F)) of concrete at an early age (14 days) and attain a higher increment of G(F) at a later age (56 days). The concrete containing finer fly ash was found to present larger critical stress intensity factors (K-IC(S)) at various ages, and the K-IC(S) also increases in conjunction with the fineness levels of fly ash.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available