Grout rheological properties for preplaced aggregate concrete production

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Publication date
2014-12Keyword
Concrete technologyConcrete manufacture
Rheological properties
Grouting materials technology
Grout rheology
Water-cement ratios
Cement-sand ratios
Workability
Bleeding
Admixture
Preplaced aggregate concrete
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© 2014 ICE. Full-text reproduced in accordance with the publisher's self-archiving policy.Peer-Reviewed
YesOpen Access status
openAccess
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Show full item recordAbstract
This paper investigates the effect of cement based grout rheology on the injection process through coarse aggregate for producing preplaced aggregate concrete. Four different sands were used in the grout production at different water-cement ratios and cement-sand ratios. Superplasticiers and pulverised fuel ash were also employed in the grout production. Coarse aggregate of known weight was compacted into 150 mm cubic forms, and then the grout was injected through a plastic pipe under self weight into the stone ‘skeleton’. It has been found that there are threshold values of the rheological parameters beyond which full injection is not possible. In particular, all grout mixes with and without additives and admixtures exhibited the same yield stress threshold value for full injection, whereas the threshold values for other rheological properties including the grout plastic viscosity, flow time and speed were different according to the materials added to the mix.Version
Accepted manuscriptCitation
Ganaw AI, Hughes DC and Ashour AF (2014) Grout rheology threshold for preplaced aggregate concrete production. Proceedings of the Institution of Civil Engineers - Construction Materials. 167(6): 292-301.Link to Version of Record
https://doi.org/10.1680/coma.13.00032Type
Articleae974a485f413a2113503eed53cd6c53
https://doi.org/10.1680/coma.13.00032