Experiments on Neutron-Attenuation by Ordinary Concrete; ETUDE EXPERIMENTALE DE L'ATTENUATION DES NEUTRONS DANS LE BETON ORDINAIRE
Technical Report
·
OSTI ID:4189967
The penetration of fission neutrons in water and glass mixtures has been investigated in the NAIADE facility. The slopes of the thermal and fast fluxes (the latter measured with a dosimeter) remain similar when the volume proportion of water is greater than 15 per cent. For smaller water contents the measurements show the evidence of streaming, presumably due to slowing-down neutrons of energy smaller than 300 kev. Since a volume-proportion of - about 15 per cent of water in glass corresponds to the composition of ordinary concrete, the present work enables prediction of the effects of a dessication of concrete to be made. Moreover, it is seen that there is no interest in increasing the proportion of water in ordinary concrete beyond the usual values (15 to 20 per cent). (auth)
- Research Organization:
- France. Commissariat a l'Energie Atomique, Paris
- NSA Number:
- NSA-14-010147
- OSTI ID:
- 4189967
- Report Number(s):
- CEA-1186
- Country of Publication:
- France
- Language:
- English
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