Long Island Precast, Inc

Nuclear Shielding


Custom mix designs for shielding of nuclear radiation. Nuclear shielding blocks with densities up to 240-pounds/cubic foot. Speciality admixtures for hi-range neutron attenuation.


Final preparation of shielding blocks prior to shipment to reactor at Brookhaven National Laboratory. Hi-density concrete, nearly twice the weight of conventional concrete, was used in the fabrication of these blocks weighing up to 24,000 pounds.

Intricate layout of these high density shielding blocks inside the High Flux Beam Reactor. Brookhaven National Laboratory, Upton, New York.

(Photo courtesy of Brookhaven National Laboratory)