Recep Kurtulus, Cansu Kurtulus, Taner Kavas

Pages: 27–30

DOI: 10.37392/RapProc.2022.07

These days, the utilization of industrial solid waste substances for gaining added-value products has become of prime importance for securing a more sustainable future. With this in mind, the present study handles using waste bricks bottom ash (BBA) involving bismuth oxide (Bi2O3) dopant for understanding the potentiality as a radiation protection material. Four different material systems, 1 to 4, were designed using the batches of xBi2O3 - (100-x)BBA where x: 0, 5, 10, and 20 wt%. The intended pellets (D: 28 mm) were made ready after precisely weighing, mixing, and pressing steps. For sintering, the prepared bodies, a heat treatment process was initiated by applying 10 ⁰C/min to reach 1100 ⁰C, which was then dwelled 1h at the peak temperature. Afterward, the successfully produced waste-derived material systems were subjected to some material characterization analysis, as well as theoretical radiation shielding computations via Phy-X/PSD. According to the density measurements, we found out that the increasing doping rate from 0 to 20 wt% in Bi2O3 led to the improvement in bulk density from 1.3857 to 1.6177 g/cm3 in the respective order. Additionally, the compressive strength showed an increasing trend from 7.28 to 8.01 MPa with the increasing Bi2O3 contribution. On the other hand, the essential radiation shielding parameters, linear attenuation coefficient (LAC), half-value layer (HVL), and effective atomic number (Zeff) were figured out, and we found out that all parameters were enhanced owing to the higher Bi2O3 addition. As a result, the sample-4 can be preferred as an alternative material system where radiation protection is significant.
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