RADIATION SHIELDING PROPERTIES OF HEAVY AGGREGATES

Abstract

In the production of concrete besides sand, gravel, crushed stone agrega is the main materials. It occupies about 60-75% of concrete in volume. If the specific gravity of agrega is higher than 4000 kg/m3, it is known as heavy agrega and in order to produce heavyweight concrete heavy agrega should be used in concrete mixture. This study, the radiation absorption properties of concrete in determining who was to see how they affect the properties of barite absorption rate changes. In this study, the gamma rays absorption properties of heavy aggregate is investigated using NaI (Tl) detector and the results have been discussed.

Keywords

• Heavy aggregate, radiation absorption properties, Gamma spectrometry, NaI(Tl), concrete,

A?IR AGREGALARIN RADYASYON ZIRHLAMA ÖZELLYKLERY

Öz

Betonun üretiminde kumun yanysyra, çakyl, kyrmata? agrega ba?lyca malzemelerdir. Betonun hacminin 60-75%i'nin kaplar. E?er agreganyn özgül a?yrly?y, 4000 kg/m3ten daha büyükse, a?yr agrega olarak bilinir ve a?yr beton üretmek için, a?yr agregaly beton kary?ymy kullanylmalydyr. Radyasyon so?urma özelliklerinin belirlenmesinde beton içerisine katylan barit oranlarynyn de?i?iminin so?urma özelliklerini nasyl etkileyece?ini görmek amacyyla yapylan bu çaly?mada, a?yr agreganyn gama y?ynlary so?urma özellikleri ve NaI(Tl) dedektörü kullanylarak incelenmi?tir ve sonuçlar tarty?ylmy?tyr.

Anahtar Kelimeler

• A?yr agrega, radyasyon absorblama özellikleri, gama spetrometresi, NaI(Tl), beton,