Studies on the investigation of natural radiation emitted from building materials

Yıl 2018, Cilt: 20 Sayı: 1, 22 - 37, 02.04.2018

Ali Aşkın , Murat Dal

https://doi.org/10.25092/baunfbed.411782

Öz

In this rewiev, studies performed in Turkey and in abroad in order to
determine the gamma activities of the ²²⁶Ra, ²³²Th,
⁴⁰K isotopes existed in the various building materials and the
radiological parameters depending on the activities such as, radium equivalent
activity, gamma and alpha indexes, absorbed ratio of gamma dose, internal and
external hazard indexes, are investigated and their results are summarized for
the readers. In the performed studies, the radioactivities of the granite and
sand samples are found to be higher than the other materials. In some cement
specimens with high activity, it was reported that the source of high
radioactivity originates from the ash, which is commonly used as an additive
material in cement. When the number of studies and their results are considered,
it is understood  that the determination
of natural radioactivity emitted from building materials will be very  important for the protection of human health
in a long term.

Anahtar Kelimeler

Natural radioactivity, building material, radiological parameter

Yapılarda kullanılan malzemelerden yayılan doğal radyasyonun araştırılmasına yönelik çalışmalar

Öz

Bu derlemede, çeşitli yapı
malzemelerinde var olan ²²⁶Ra, ²³²Th, ⁴⁰K radyoaktif
izotoplarından yayılan gama radyasyonun aktivitesinin ve bu aktivitelere bağlı
olan radyum eşdeğer aktivitesi, gama ve alfa indeksi, soğurulan gama doz oranı
ile iç ve dış risk indeksleri gibi radyolojik parametrelerinin belirlenmesi
amacıyla Türkiye’de ve diğer ülkelerde yapılmış araştırmalar ve sonuçları incelenerek
okuyucuların dikkatine sunulmuştur. Yapılan çalışmaların genelinde granit ve
kum örneklerindeki doğal radyoaktivite diğer malzemelere oranla daha yüksek
bulunmuştur.  Aktivitesi yüksek bulunan
bazı çimento örneklerinde, yüksek radyoaktivtenin kaynağının çimentoda katkı
malzemesi olarak kullanılan kül’den kaynaklandığı belirtilmiştir. Bu konuda
yapılan çalışmaların sayıları ve elde edilen sonuçlar değerlendirildiğinde,
yapı malzemelerinden yayılan doğal radyoaktivitenin belirlenmesinin uzun vadede
insan sağlığının korunmasına önemli katkıları olacağı görülmektedir.

Anahtar Kelimeler

Doğal radyoaktivite, yapı malzemesi, radyolojik parametre

Kaynakça

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