# Geopolymer concrete for radiation shielding application
> Nurhasmi

URL kanonis: https://discover.unhas.ac.id/publications/geopolymer-concrete-for-radiation-shielding-application
Jurnal / Konferensi: Materials Science Forum
Tahun terbit: 2019
DOI: https://doi.org/10.4028/www.scientific.net/MSF.966.41
ISSN: 02555476
Kuartil SJR: Q4
Citations: 13

## Authors
- Nurhasmi

## Abstract
Abstract. Ashield of gamma radiation with a basic material of fly ash (FA) type C have been made by additional graphite (G) and Fe 2 O 3 (F) using Retsch MM 400 for 30 minutes at the frequency 10 Hz. GF is added to the FA matrix with mass variations of 0%, 1%, 2%, and 3%. Samples were activated with alkali solution at 70°C. Density obtained by calculation of each sample FA_GF0, FA_GF1, FA_GF2, and FA_GF3 are 2.09 g/cm -3 , 2.111 g/cm -3 , 2.113 g/cm - 3 , and 2.115 g/cm -3 , respectively. For sample FA_GF3 the density is high but the attenuation coefficient is small. This is influenced by the presence of graphite content in the sample. Graphite also plays a role in forming pores caused the radiation more transmitting through the samples. It can be concluded that the very good composition of the additional of GF is 2% with half value layer (HVL) is 3.980 cm and mean free path (MFP) is 5.743 cm.

## Keywords
- Materials science
- Graphite
- Mass attenuation coefficient
- Electromagnetic shielding
- Analytical Chemistry (journal)
- Radiation
- Fly ash
- Alkali metal
- Attenuation
- Half-value layer
- Mean free path
- Irradiation
- Composite material
- Radiation shielding
- Nuclear chemistry
- Optics
- Scattering
- Physics
- Nuclear physics
- Chemistry
- Chromatography
- Quantum mechanics

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Sumber: Discover Unhas — RIMS Universitas Hasanuddin.
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