Assessment of the radiological impact of using fly ash in cement.
The radiological consequences of using fly ash as a component of cement are discussed. Measurements of the activity concentrations of the fly ash and cement are reported together with measurements of emanation coefficients and exhalation rates. The radon-exhalation rate was found to be significantly lower in concrete containing fly ash than in ordinary concrete. Dose calculations suggest that fly ash will contribute to a reduction in effective dose equivalent due to the reduced radon-exhalation rate.
D000398:Air Pollution, Radioactive / Q000032:analysis; D003252:Construction Materials / Q000032:analysis*; D006798:Housing; D011197:Potassium Radioisotopes / Q000032:analysis; D011210:Power Plants; D011829:Radiation Dosage; D011883:Radium / Q000032:analysis; D011886:Radon / Q000032:analysis*; D013910:Thorium / Q000032:analysis; D014866:Waste Products / Q000032:analysis*
D011197:Potassium Radioisotopes; D014866:Waste Products; D013910:Thorium; D011886:Radon; D011883:Radium