Assessing of the fresh concrete properties of self-compacting concrete containing sawdust ash

Evaluation of self-compactability of SCC mixes containing SDA as powder material and naphthalene sulphonate (NS) and melamine sulphonate (MS), respectively, shows that optimum workability range for the slump flow test lie between 665mm and 680mm, while the V-funnel test is 8.2s and 8.4s. These value...

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Bibliographic Details
Published in:Construction & building materials 2008-06, Vol.22 (6), p.1178-1182
Main Authors: Elinwa, Augustine U., Ejeh, Stephen P., Mamuda, Ahmed M.
Format: Article
Language:English
Subjects:
Building materials industry
Concrete
Evaluation
Flowable concrete
Microstructure
Properties
Sawdust ash
Self-compactability
Self-compacting concrete
Super-plasticizers
Testing
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Summary:Evaluation of self-compactability of SCC mixes containing SDA as powder material and naphthalene sulphonate (NS) and melamine sulphonate (MS), respectively, shows that optimum workability range for the slump flow test lie between 665mm and 680mm, while the V-funnel test is 8.2s and 8.4s. These values show that adequate mix stability and self deaeration are achieved. Results of the self-compactability of the SCC mixes using the U- and L-box are within the targets and tolerance values stipulated by EFNAC (2002). These are 28.5mm/29mm and 0.85/0.85, respectively, for mix containing NS and MS.
ISSN:0950-0618
1879-0526
DOI:10.1016/j.conbuildmat.2007.02.004