Geopolymers from fly ash and their gamma irradiation

Geopolymers from fly ash and their gamma irradiation
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粉煤灰地质聚合物及其伽马辐射

DOI:
10.1016/j.matlet.2018.05.088
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发表时间:
2018
期刊:
影响因子:
3
通讯作者:
Leay L
Leay L
中科院分区:
材料科学3区
文献类型:
--
作者:
Leay L

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为了评估用粉煤灰生产的地聚合物用于核废料封装的适宜性,研究了它们在暴露于伽马辐射时的行为。发现辐照(400 KGy, 4 KGy /h)对散装样品的孔隙率影响极小。孔隙水的辐射解氢表现出剂量率效应(9 kGy/h ~ 280 kGy, 24 kGy/h ~ 700 kGy)。观察到表面积的影响,产氢量的减少与表面积的减少相对应;不排除孔隙化学的影响。
In order to assess the suitability of geopolymers produced from fly ash for use in nuclear waste encapsulation, their behaviour when exposed to gamma radiation has been examined. Irradiation (400 KGy at 4 kGy/h) was found to have had minimal effect on the porosity of bulk samples. Radiolytic hydrogen production from the pore water exhibited a dose rate effect (9 kGy/h up to 280 kGy and 24 kGy/h up to 700 kGy). An effect of surface area was observed with a decrease in hydrogen production corresponding to a decrease in surface area; the effect of pore chemistry was not ruled out.
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