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The effect of gamma radiation on the strength of Portland cement mortars

The effect of gamma radiation on the strength of Portland cement mortars J O U R N A L O F M A T E R I A L S S C I E N C E L E T T E R S 2 0, 2 0 0 1, 1345 – 1348 P. SOO, L. M. MILIAN Brookhaven National Laboratory, Upton, NY 11973-5000, USA E-mail: soo@bnl.gov Concrete is often used as a structural and shielding material for the storage and disposal of radioactive wastes. One factor that needs to be assessed is the resistance of concrete to radiation that may cause losses in mechanical strength. Gamma radiation from radioactive wastes is especially important because of its ability to deeply penetrate and degrade materials. Early studies indicated that damage to concrete will only occur for gamma doses on the order of 108 grays, Gy [1, 2]. However, there has been little attempt to determine whether the dose rate is an important factor in concrete degradation. Low level radioactive wastes typically give low gamma dose rates and the long term effects of such radiation must be quantified if the integrity of concrete barriers is to be assured. This paper describes part of a research effort that investigates the influence of dose http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Materials Science Springer Journals
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