Analisis Perbandingan Komposisi Pasir Dan Semen Untuk Mendapatkan Beton Yang Tahan Radiasi Sinar X

Abstract

Background: X-rays are widely used in various fields such as medicine, industry, and research. However, external radiation from X-rays can be harmful to human health, causing cancer and gene mutations. Therefore, it is necessary to control this radiation hazard. One way to control external radiation hazards is by using radiation shielding. Radiation shielding is a material that can absorb or attenuate radiation, minimizing the radiation level emitted into the environment. Concrete is a promising material for radiation shielding.Research Objectives: This research aims to find a concrete mix with a sand-tocement ratio that yields a good linear attenuation coefficient value for X-ray radiation shielding. Methods: This research employs an experimental method by comparing various sand-to-cement ratios. The tested ratios are 1s: 1p, 1s:2p, 1s:3p, 1s:4p, 1s:5p, 1s:6p, and 1s:7p (cement:sand). Testing took place at the Radiology Laboratory of Universitas 'Aisyiyah Yogyakarta. Concrete samples with different mix ratios were prepared and tested using X-rays with an energy of 60 keV. The linear attenuation coefficient and Half Value Layer (HVL) were calculated for each mix ratio. Results: The research results showed that the concrete mix with a 1s:5p ratio exhibited the best linear attenuation coefficient compared to other variations. The average linear attenuation coefficient for 1s:5p was 0.837613415 cm-1, with an average HVL of 0.827540186 cm. A high linear attenuation coefficient indicates that the 1s:5p concrete mix effectively attenuates X-ray radiation. Conclusion:The research findings suggest that concrete with a 1s:5p cement-tosand ratio could be a suitable choice for X-ray radiation shielding.