集成回填材料的压缩性能研究

缓冲材料是高放废物深地质处置多重屏障系统中非常重要的一道人工屏障，通过研究一定配比的集成回填材料在不同含水量条件下的压实成型性、不同压实干密度和不同含水量压实样品的无侧限压缩性能，认为：含水量为15％的集成回填材料压实成型性最好，含水量为20％次之，压实干密度越大，无侧限抗压强度越大，在无侧限压缩实验时，含水量为20％的高密度压实回填材料样品比含水量为10％和15％的样品的抗压强度小，变形大。

Compressibility of Integrated Backfill Material

Buffer material layer is one of the important engineering barriers in the high-level radioactivewaste （HLW） geologcal repository. Compressibility of the certain ratio of integrated backfill material with different water content and different compacted density has been studied. It is found that the certain ratio of integrated backfill material with 15% water content is easily to be compacted to high density. 20% is the second. The compacted integrated backfill with high density and 20% water content has low uniaxial strength and more train than that of 10% and 15% water content.