Abstract
Protection of personnel against ionising exposure is necessary to prevent occurrence of biological risks. The objective of this study is to arranged light and heavy nuclei at the surface state particle of composite geopolymer concrete when filler with metal (Ni or Fe) for X-ray shielding applications. The composite fly ash geopolymer concrete with fillers Ni and fly ash geopolymer concrete with Fe as a shield for X-ray radiation has been successfully synthesized by a simple method. The shielding composites were carried out using Fourier transform infra-red (FTIR), X-ray diffraction (XRD), scanning electron microscope (SEM), and X-ray mobile to determine optical properties, structural properties, surface morphology, and shielding performance. In this study shows strong linear correlation between structural properties and the effectiveness of X-ray shielding. The best composite as an X-ray radiation shield is composite concrete geopolymer with AC and Ni as a filler indicated by higher linear attenuation coefficient (μ) due to present combination between heavy and light nuclei at the surface state of particle, consequently, produce high stability structural and optical properties, and bonding characteristics. The results in this study indicated composite concrete geopolymer fly ash with AC and Ni as a filler with sharp nodule at the surface state looks like prickly ball as a new composite for X-ray shield.