tThe radiation shielding properties of a new proposed building material, a novel cement–basalt fiber mix-ture (CBM), are investigated. The authors analyze the possibility of this material to be a viable substituteto outgoing materials in nuclear energy applications, which will lead to a further sustained developmentof nuclear energy in the future. This computational study involves four types of concrete with variousamounts of basalt fiber in them. The gamma-ray shielding characteristics of proposed CBM material areinvestigated with the help of WinXCom program, whereas the neutron shielding characteristics are com-puted by the Serpent code. For gamma-ray shielding, we find that the attenuation coefficients of concreteswith basalt fibers are not notably influenced by the addition of fibers. For neutron shielding, additionalbasalt fiber in mixture presents negligible effect on neutron radiation shielding. With respect to radia-tion shielding, it can be concluded that basalt fibers have good potential as an addition to heavyweightconcrete for nuclear energy applications.