Influence of the concrete mixture compaction time on density and compressive strength of hardened concrete samples
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.
“The copyright for the articles in this Journal is retained by the author(s) with the first publication right granted to the journal. The authors agree to the Creative Commons Attribution License 4.0 agreement under which the paper in the Journal is licensed.”