Impact of Crushed Mineral Aggregate on the Pumpability of Concrete during Transport and Placement

Authors

  • Gordana Topličić-Ćurčić University of Nis, The Faculty of Civil Engineering and Architecture
  • Nenad Ristić University of Nis, The Faculty of Civil Engineering and Architecture
  • Zoran Grdić University of Nis, The Faculty of Civil Engineering and Architecture
  • Vojislav V. Mitić University of Nis, Faculty of Electronic Engineering; Serbian Academy of Science and Art, Institute of Technical Sciences
  • Dušan Grdić University of Nis, The Faculty of Civil Engineering and Architecture

Abstract

In the spirit of the sustainable buildings, and with the goal of protection of river courses, in the near future an already announced directive ordering closing down of a large number of river aggregate dredging operations will be adopted. For that reason, usage of crushed mineral aggregate in concrete mixes is increasing. Irrespective of downsides of the fined crushed mineral aggregate, such as the presence of fine particles bordering the upper permissible limit and the unfavorable shape of the grain of the course aggregate for obtaining liquid consistency required for the pumpable concrete, the demanded pumpability of concrete during transport and placement has been achieved. By adding admixtures to concrete, the required concrete properties, such as: frost resistance, simultaneous frost and salt resistance and water tightness have been achieved.

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Published

2017-12-13

Issue

Vol. 48 No. 1 (2016)

Section

Articles