Patent ID: 7553431

Claim:
A method, comprising: liquefying an asphalt hydrocarbon component, wherein the asphalt hydrocarbon component is blended with Solvent De-asphalted Pitch (SDA) bottoms to produce asphalt having a viscosity of 500 to 2000 poise at 60.degree. C. (140.degree. F.); blending the liquefied asphalt hydrocarbon component with a radiation shielding and absorbing material that includes leaded glass particles derived from recycled glass waste or virgin glass, and wherein the leaded glass particles are supplied to the composition with diameter sizes of 2 millimeters or less; a polymer which is other than said asphalt hydrocarbon component; and a crosslinking or curing agent; and forming a radioactive shielding composition from the blended liquefied asphalt hydrocarbon component, the radiation shielding additive, the polymer, and the cross linking or curing agent.