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首页> 外文会议>第二届自密实混凝土设计、性能及应用技术国际研讨会(2nd International Symposium on Design,Performance and Use of Self-Consolidating Concrete SCC'2009-China) >THE USE OF SCC FOR THE CONTAINMENT OF HIGH LEVEL RADIOACTIVE WASTE
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THE USE OF SCC FOR THE CONTAINMENT OF HIGH LEVEL RADIOACTIVE WASTE

机译：SCC在控制高放射性废物中的用途

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摘要

Worldwide 10000 m3 of highly active radioactive waste is being produced each year originating from the most diverse sources. The storage issues arising from this considerable amount is being discussed from country to country. The Belgian concept is founded on the use of cylindrical concrete supercontainers deeply stored inside the geological Boom Clay.This concept is based on a multiple barrier system where every component has its own specific safety function requirements. A self-compacting concrete (SCC) is being considered for the choice of the cementitious buffer, enclosing the radwaste. The use of SCC will ease considerably the precast process and complies with all other requirements regarding strength,durability, chemical interactions,....A laboratory characterization program, in order to obtain the mechanical and thermal properties of the SCC has been finalised and the data are used to simulate the behaviour of the concrete buffer by using a 2.5D thermal and crack modelling program during the different manufacturing steps of the supercontainer: 1. Fabrication of the concrete, 2. Emplacement of the heat-emitting waste canisters, 3. Filling the remaining annular gap, 4. Closing the lid.Through-going cracks in the concrete buffer, which will considerably ease the transport mechanisms inside the supercontainer, are not expected.
机译：每年全球产生10000立方米的高活性放射性废物，其来源多种多样。各国都在讨论由这一可观数量引起的存储问题。比利时的概念是基于使用深埋在地质动臂粘土中的圆柱形混凝土超容器而建立的，该概念基于多重屏障系统，其中每个组件都有其特定的安全功能要求。正在考虑使用自密实混凝土（SCC）来选择粘结性废料，以封闭水泥废物。使用SCC将大大简化预制过程，并符合有关强度，耐用性，化学相互作用等所有其他要求....为了获得SCC的机械和热性能，实验室表征程序已经完成，并且在超级容器的不同制造步骤中，通过使用2.5D热和裂纹建模程序，使用数据模拟混凝土缓冲区的行为：1.混凝土的制造； 2.放热废料罐的放置； 3。填充剩余的环形间隙，4.盖上盖子。不希望混凝土缓冲器中出现连续的裂缝，这会大大减轻超容器内部的运输机制。

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