摘要：The subject of the article is the analysis of the influence of factors related to the course of concreting on the quality of the reinforced concrete element. The problem was discussed on the example of columns with an unusual narrow cross-section (18x80 cm). The characteristics of the surface defects of tested columns are presented and their causes are discussed. The basis of discussion were observations and in-situ tests of concrete mix performed during concreting similar elements in similar conditions. The potential effects of defects in terms of component durability were also considered.
