摘要
以脱碱拜耳法赤泥、熟料和石膏为原料进行赤泥水泥的制备,得出脱碱赤泥的合适掺量为15%。研究了赤泥水泥水化过程中赤泥掺量和水化龄期对232Th、226Ra、40K放射性比活度的影响。结果表明:赤泥水泥水化后相较于水化前,232Th、226Ra和40K的放射性比活度均出现了下降;水化28 d龄期,随着赤泥掺量的增加,赤泥水泥232Th、226Ra、40K的放射性比活度均有所增加;同赤泥掺量条件下,226Ra的放射性比活度随着水化龄期的延长而增加,232Th的放射性比活度随着水化龄期的延长基本保持不变,40K的放射性比活度随着水化龄期的延长一直减小。
This paper prepared a type of red mud cement using dealkalization bayer red mud, clinker and gypsum as raw materials, drew a conclusion that the optimum mixing amount of the dealkalization bayer red mud is 15%. Influence of changing red mud content and cement hydration ages on its radioactive specific activity of ^232Th, ^226Ra, ^40K was studied during the hydrating of the red mud cement. Results show that the radioactive specific activity of ^232Th, ^226Ra and ^40K is decreased after the red mud cement hydrated. When cement hydration ages is 28 d, the radioactivity specific activity of ^232Th, ^226Ra, ^40K is increasing along with the increase of red mud content. The influence of changing cement hydration ages on its radioactivity specific activity of ^226Ra, ^232Th, ^40K is that ^226Ra inerease,^40K decrease while ^232Th remain about the same.
出处
《硅酸盐通报》
CAS
CSCD
北大核心
2015年第9期2579-2584,共6页
Bulletin of the Chinese Ceramic Society
基金
国家自然科学基金(51172155)
关键词
赤泥水泥
赤泥掺量
水化龄期
放射性比活度
red mud cement
red mud content
cement hydration ages
radioactivity specific activity
