Influence of the concrete mixture compaction time on density and compressive strength of hardened concrete samples

  • Mindaugas Daukšys Head of Department of Civil Engineering Technologies
  • Ramūnas Pocius Kaunas University of Technology
  • Lukas Venčkauskas Kaunas University of Technology
  • Mindaugas Augonis Kaunas University of Technology
  • Šarūnas Kelpša Kaunas University of Technology
Keywords: compaction time, compressive strength, concrete mixture, density, hardened concrete

Abstract

Paper discusses the influence of the concrete mixture compaction time on density and compressive strength of hardened concrete samples. Concrete specimens, of diameter about 106 mm (D) and height about 1000 mm (H), were formed during the experiment. The ratio of height and diameter H/D was 9.4. Concrete mixture, placed in forms, was compacted by poker vibrator, when vibrating element was placed to the top part of the form. Different time was used for compacting mixture in forms: 0, 3, 6, 9 and 12 s. The study results show the changes in density and compressive strength of samples (radius about 106 mm and height about 100 mm) depending on the location of the sample in specimen (1000 mm height). It was found, that samples taken from different height of the specimen had different density and compressive strength.

DOI: http://dx.doi.org/10.5755/j01.sace.11.2.12660

Author Biography

Mindaugas Daukšys, Head of Department of Civil Engineering Technologies

Kaunas University of Technology

Faculty of Civil Engineering and Architecture

Department of Civil Engineering Technologies

Published
2015-07-21
Section
Articles