Influence of recycled concrete dust on the properties of self-compacting concrete (SCC)

Ernestas Ivanauskas, Mantas Lazauskas, Paulius Grigaliūnas

Abstract


According to tests results we can conclude that it is possible to reduce cement amount in the concrete up to 30 % by changing it with recycled concrete dust. The best results may be achieved reducing 10 % cement amount by non-grinded and grinded concrete dust. In this case concrete compressive strength is even higher in comparison with control composition. Using 10 % of concrete dust leads to lower exothermic temperatures in cement stone and lower relative shrinkage deformations. It is possible to presume, that cement replacement by concrete dust with 10 % may even improve concrete mechanical and longevity properties and dust usage even up to 30 % does no damage to these properties. It could be environmentally attractive technology which could save money by reducing natural resources demand.

DOI: http://dx.doi.org/10.5755/j01.sace.17.4.16456


Keywords


self-compacting concrete (SCC); crushed concrete; concrete dust; rheology; durability

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Print ISSN: 2029–9990
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