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Studies on radiation shielding properties of newly developed high-density concrete for advanced radiotherapy facilities

机译：Studies on radiation shielding properties of newly developed high-density concrete for advanced radiotherapy facilities

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摘要

The linear attenuation coefficients and tenth-value layers are determined experimentally for the newly developed Cement-based high-density Concrete and Fly-Ash-based Geopolymer high-density Concrete using Red-Mud-based synthetic aggregate made up from industrial waste. Linear attenuation coefficients were determined in narrow and broad beam conditions for five megavoltage X-ray photon beam energies, i.e. 6, 10, 15 MV, and 6 and 10 MV-FFF generated by Varian TrueBeam medical linear accelerator. These materials are found to be more effective in radiation shielding when compared with ordinary concrete and hematite ore-based high-density concrete making it a useful construction material for radiotherapy accelerator vaults. Similar values of linear attenuation coefficients are observed for all the above-mentioned X-ray beam energies when cement is replaced with fly-ash in ordinary concrete, hematite-based high-density concrete and red-mud-based high-density concrete, making it a good eco-friendly alternative of cement and useful for the construction of radiotherapy vaults.

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