Effect of elevated temperature to radiation shielding of ultra-high performance concrete with silica sand or magnetite
2020; Elsevier BV; Volume: 262; Linguagem: Inglês
10.1016/j.conbuildmat.2020.120567
ISSN1879-0526
AutoresRaizal S.M. Rashid, S. Mohammed Salem, N.M. Azreen, Yen Lei Voo, M. Haniza, Ahmad Azim Shukri, Mohd-Syukri Yahya,
Tópico(s)Concrete and Cement Materials Research
ResumoThe high density and strength of ultra-high performance concrete (UHPC) makes it suitable for radiation shielding, however, the deterioration of radiation shielding properties due to exposure to elevated temperature is a major concern. Hence this paper presents a study on the radiation shielding properties of UHPC after exposure to elevated temperature. It was found that the half-value layer and tenth value layer of both types of UHPC tested had increased by 76–82%, which was attributed to the excessive spalling and cracking that occurred. Magnetite was found to be slightly better than silica sand for radiation shielding.
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