TY - JOUR T1 - Natural radioactivity of concrete with concentrated silica fume (SF) and siliceous fly ash (FA) addition A1 - Damian Marek Gil A1 - Grzegorz Ludwik Golewski 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 - natural radioactivity, radionuclide, concrete, fly ash, concentrated silica fume, radioactive safety AB - Natural radiation has been accompanying humans since its inception. They are present in the air, in water, soil or rocks, as well as in building materials that are used to erect building objects. However, a person may be exposed to a greater or lesser extent to the surrounding radioactivity. The paper presents the results of radioactivity testing of concrete with a different composition of the addition of exemplary siliceous fly ash and compacted microsilica fume. It has been proven that material with increased radioactive activity can be safely used in the production of concrete and additionally it meets the restrictive requirements of the Polish regulation of the Council of Ministers of 2017 or Council directive 2013/59/Euratom in the field of protection against active radiation. ER -