TY - JOUR T1 - How are parameters of an ordinary concrete affected by ashes generated in thermal treatment of wastewater sediments and used as a substitute of a part of the cement A1 - Gabriela Rutkowska A1 - Karol Siekut JO - Acta Sci. Pol. Architectura} VL - 18 IS - 1 SP - 18 Y1 - 2019 UR - https://www.architectura.actapol.net/volume18/issue1/_1_.pdf SN - 1644-0730 KW - concrete, fly ash, properties of concrete AB - Application of fly ash from combustion of municipal sewage sludge (FAMSS) in the concrete technology implements assumptions concerning the waste management adopted by the European Union. The study concerned the influence of partial replacement of the Portland cement by the ash on strength parameters of concrete in comparison to the reference concrete The article presents the results of investigations on selected properties (consistency, water absorption, compressive strength after 28, 56 and 90 days of curing) of ordinary concretes and concretes containing fly ash from combustion of municipal sewage sludge. To make up the samples, the Portland cement CEM I 42.5 R and natural aggregate with graining of 0–16 mm were used. The concrete with siliceous and siliceous admixture was made in three lots to which the ash was added in the quantity of 5, 10 and 15% of the cement weight. The investigations have shown that the concretes containing fly ash from combustion of municipal sewage sludge have better strength parameters. ER -