SHIELDING PROPERTIES OF ASCURED BARITE CONCRETE
The fast neutron attenuation was found to be approximately exponential. The measured relaxation lengths of barite concrete in the as-cured condition are respectively lengths was attributed to the water loss (0.07 gm/cm/sup 3/) that occurred while the barite concrete was in the test wells, the water being driven off by heat absorbed from the thermal shield. In the first test a measured fast neutron removal cross section of 0.0892 cm/sup -1/ was obtained for a concrete density of 3.55 gm/cm/sup 3/g. This value agrees within about 7 per cent with the calculated removal cross section of 0.0831 cm/sup -1/. In the last test the variation between experimental and calculated values was about 6 per cent. These variations can be attributed largely to uncertainties in the composition of the concrete. (auth)
- Research Organization:
- General Electric Co. Hanford Atomic Products Operation, Richland, Wash.
- DOE Contract Number:
- AT(45-1)-1350
- NSA Number:
- NSA-17-036833
- OSTI ID:
- 4648530
- Report Number(s):
- HW-71113
- Country of Publication:
- United States
- Language:
- English
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