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

  • Ernestas Ivanauskas Kaunas University of Technology
  • Mantas Lazauskas Kaunas University of Technology
  • Paulius Grigaliūnas Kaunas University of Technology
Keywords: self-compacting concrete (SCC), crushed concrete, concrete dust, rheology, durability

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

Author Biographies

Ernestas Ivanauskas, Kaunas University of Technology
Assoc.prof. dr. at Faculty of Civil Engineering and Architecture, Department of Building Materials and director of Building Materials and Structures Research Centre
Mantas Lazauskas, Kaunas University of Technology
Master at Faculty of Civil Engineering and Architecture, Building Materials and Structures Research Centre
Paulius Grigaliūnas, Kaunas University of Technology
Ph. D student at Faculty of Civil Engineering and Architecture, Department of Building Materials
Published
2017-02-01
Section
Articles