RADIATION SHIELDING STRUCTURE COMPOSITION
Radiation structures formed from a composition including calcium silicate, magnesium or calcium oxides and an acid phosphate are provided. The composition may also include fly ash or kaolin with or without the calcium silicate.
1 . A radiation shielding structure composition comprising calcium silicate, magnesium oxide and an acid phosphate and having an improved attenuation coefficient as compared to ordinary concrete based on photon energies of 0.662 MeV (5 μCi Cs-137 source) and 1.173 MeV (1 μCi Co-60 source).
2 . The radiation shielding structure composition of claim 1 comprising 10 to 40 percent by weight calcium silicate, 10 to 35 percent by weight magnesium oxide and 15 to 45 percent by weight acid phosphate.
3 . The radiation shielding structure composition of claim 2 , wherein the acid phosphate is monopotassium phosphate.
4 . A radiation shielding structure comprising the radiation shielding structure composition of claim 1 sprayed onto a substrate or formed into predetermined structure.
5 . A radiation shielding structure composition comprising a magnesium or calcium oxide, an acid phosphate and fly ash and having an improved attenuation coefficient as compared to ordinary concrete based on photon energies of 0.662 MeV (5 μCi Cs-137 source) and 1.173 MeV (1 μCi Co-60 source).
6 . The radiation shielding structure composition of claim 5 comprising 15 to 35 percent by weight calcined magnesium or calcium oxide, 15 to 55 percent by weight acid phosphate and 20 to 40 percent by weight fly ash.
7 . The radiation shielding structure composition of claim 6 , wherein the acid phosphate is monopotassium phosphate.
8 . A radiation shielding structure comprising the radiation shielding structure composition of claim 5 sprayed onto a substrate or formed into predetermined structure.
9 . A radiation curing structure composition comprising magnesium or calcium oxide, an acid phosphate and kaolin and having an improved attenuation coefficient as compared to ordinary concrete based on photon energies of 0.662 MeV (5 μCi Cs-137 source) and 1.173 MeV (1 μCi Co-60 source).
10 . The radiation shielding structure composition of claim 5 comprising 15 to 35 percent by weight calcined magnesium or calcium oxide, 15 to 55 percent by weight acid phosphate and 20 to 40 percent by weight kaolin.
11 . The radiation shielding structure composition of claim 10 , wherein the acid phosphate is monopotassium phosphate.
12 . A radiation shielding structure comprising the radiation shielding structure composition of claim 10 sprayed onto a substrate or formed into predetermined structure.
13 . A method of shielding a structure or substrate from radiation, the method comprising applying a composition comprising calcium silicate, magnesium oxide and an acid phosphate to the structure or substrate.
14 . The phosphate method of claim 13 , wherein the composition comprises 10 to 40 percent by weight calcium silicate, 10 to 35 percent by weight magnesium oxide and 15 to 45 percent by weight acid phosphate.
15 . A method of shielding a structure or substrate from radiation, the method comprising applying a composition comprising magnesium or calcium oxide, an acid phosphate and fly ash to the structure or substrate.
16 . The method of claim 15 , wherein the composition comprises 15 to 40 percent by weight calcined magnesium or calcium oxide, 15 to 55 percent by weight acid phosphate and 20 to 40 percent by weight fly ash.
17 . A method of shielding a structure or substrate from radiation, the method comprising applying a composition comprising magnesium or calcium oxide, an acid phosphate and kaolin to the structure or substrate.
18 . The method of claim 17 , wherein the composition comprises 15 to 40 percent by weight calcined magnesium or calcium oxide, 15 to 55 percent by weight acid phosphate and 20 to 40 percent by weight kaolin.