Útburkolatok összgamma-sugárzásának vizsgálata

The world average of radioactive background radiation is 2.4 mSv pro year. The main part of this background radiation is come from builded environment. From this reason many international project was focused on the radioctive radiation of the building materials. However the radiation from pavemant m...

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Bibliographic Details
Main Author: Sós Katalin
Corporate Author: International Symposium on Analytical and Environmental Problems (17.) (2011) (Szeged)
Format: Book part
Published: SZAB Szeged 2012
Series:Proceedings of the International Symposium on Analytical and Environmental Problems 17
Kulcsszavak:Sugárbiológia, Sugárzás - biológiai hatás, Sugárzás mérése
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Online Access:http://acta.bibl.u-szeged.hu/76419
Description
Summary:The world average of radioactive background radiation is 2.4 mSv pro year. The main part of this background radiation is come from builded environment. From this reason many international project was focused on the radioctive radiation of the building materials. However the radiation from pavemant materials has been less researched. Therefore our departement feel it important to adress more reseach of radiation of different type of pavement and layers of pavement. The ND-497 type portable scintillation detector was used for our measurements. During our measurements the radiation of pavement surface and the layers of pavement was measured directly. The results of our project was that the radioactive radiation over pavement was driven by the materials porosity and the type of this materials similar to the building materials. It is beacuse in case of low porosity the radon - comes from earth and pavement - diffusion was blocked. It means that the pavements are decrease the radiation compare to the base soil results from low radioactivity of concrete and high porosity of pavement. In case of asphalt the situation is a bit complicated. The dose is decreasing over the sidewalk but increase over the roadway compare the base soil. In this case we have to remember that the asphalt are build over the concrete base. Finally the ratio of this two layer will define the final radiaoctive radiation.
Physical Description:185-188
ISBN:978-963-315-066-5