Assessing The Values of Radionuclides Penetration into Structures and Material

Project objective: research distribution of radionuclides that fell out after the Chornobyl accident based on construction materials profile (concrete, brick, asphalt, etc.).

Within the framework of the project:

The activities to sample construction materials (white and red brickwork, glazed piles and paver, concrete covering of walls and asphalt-paved road) were performed with the objective to analyze radionuclides contents (137Cs and 90Sr).

As a result of the research, the following facts were discovered:

• General density of radionuclides contamination is rather high and almost coincides with the density of soil contamination within the sites, where the sampling was performed.
• There is a significant difference between the density ratios of materials’ radiocesium and radiostrontium surface contamination.
• Peculiarities of radionuclides distribution along depth of the construction materials depend on a material type and on a radionuclide.
• There are significant differences in contamination of a material near-surface layer.
• The characteristics of construction materials that may have an influence on distinctive features of their radioactive contamination.