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40. Rheology of pastes and mortars with fines resulting from ornamental rock waste



Title: 40. Rheology of pastes and mortars with fines resulting from ornamental rock waste
Author(s): M. Vieira, A. Bettencourt
Paper category : conference
Book title: 5th International RILEM Symposium on Self-Compacting Concrete
Editor(s): G. De Schutter and V. Boel
Print-ISBN: 978-2-35158-047-9
e-ISBN: 978-2-35158-088-2
Publisher: RILEM Publications SARL
Publication year: 2007
Pages: 279 - 284
Total Pages: 6
Nb references: 7
Language: English


Abstract: Self compacting concrete (SCC) contains a higher paste volume than ordinary concrete.
This makes it possible to reduce friction among aggregates so that the SCC will flow only due to its one weight. The increase in paste volume is not just done by increasing the cement content, because this would not only augment the concrete price but also would lead to problems associated to high shrinkage and high hydration heat. Therefore, the use of mineral additions is a common practice in the manufacturing of SCC. Various types of additions are mentioned in the literature, such as: fly ash, slag, silica fume and limestone filler.
The ornamental rock industry produces a significant amount of waste due to the cut activities. In view of the characteristics of that waste, a study has been implemented so as to evaluate the effectiveness of its use in producing SCC. This paper presents the results of the study about the rheology of pastes and mortars with the addition of fines deriving from that industry, by comparing them with the use of limestone filler currently employed in the manufacturing of SCC.


Online publication: 2009-06-16
Publication type : full_text
Public price (Euros): 0.00


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