Estudo da emanação de radonio em amostras de concreto com composições diferentes
TL;DRAbstract
The radon-222 is a noble radioactivity gas present in uranium-238 decay chain.The concrete components (cement and aggregates) have their raw materials extracted from crust that contains uranium as impurity.The 238 U contained in these components will decay following its decay chain until 20 ":Pb, passing by radon that can diffuse to indoor air of dwellings.The 222 Rn emanation from concrete depends upon two factors: 2 2 ã content and diffusion length.The main objective of this work was to assess the influence of the concrete proprieties in radon emanation.For this purpose, it was carried out a systematic study about radon emanation from concrete samples that have different mix proportions and that were produced with different cement types.The 222 Rn concentration was determined in sealed plastic chamber employing
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The radon-222 is a noble radioactivity gas present in uranium-238 decay chain.The concrete components (cement and aggregates) have their raw materials extracted from crust that contains uranium as impurity.The 238 U contained in these components will decay following its decay chain until 20 ":Pb, passing by radon that can diffuse to indoor air of dwellings.The 222 Rn emanation from concrete depends upon two factors: 2 2 ã content and diffusion length.The main objective of this work was to assess the influence of the concrete proprieties in radon emanation.For this purpose, it was carried out a systematic study about radon emanation from concrete samples that have different mix proportions and that were produced with different cement types.The 222 Rn concentration was determined in sealed plastic chamber employing
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