The sensitivity of artificially sedimented organic-free illitic clay
The sensitivity of artificially sedimented organic-free illitic clay
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DOI：
10.1016/0013-7952(69)90003-9
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发表时间：
1969-04
影响因子：
7.4
通讯作者：
R. Pusch;M. Arnold
中科院分区：
文献类型：
--
作者：
R. Pusch;M. Arnold
用人工沉淀的伊利石粘土进行了一系列试验，目的是研究盐水中沉淀的粘土是否能通过浸出产生快速性。为了减少有机成分、高粉砂含量或特定矿物成分等因素的影响，使用细粒无有机物伊利石粘土和人工产生的盐水。通过用过氧化氢长时间处理干燥粘土材料来消除有机物质。结果表明，有机质与矿物相的结合非常牢固，淋滤没有引起灵敏度的显著变化。由此得出结论，淋溶可能不是形成粘土的充分条件。这与Bjerrum和Rosenqvist（1957）的类似试验结果直接矛盾。讨论的差异特别提到的事实是，Bjerrum和Rosenqvist使用的粘土材料，这是已知的是一个快速粘土在其自然状态。这样的材料可能有一个有机物含量，它决定了在浸出状态下的重塑剪切强度。
A series of experiments with artificially sedimented illitic clay was carried out with the purpose to investigate if quickness could be produced by leaching of a clay deposited in salt water. In order to reduce the influence of such factors as organic constituents, a high silt content or a particular mineral composition, a fine-grained organic-free illite clay and an artificially produced salt water were used. The elimination of organic substances was obtained by a prolonged treatment with hydrogen peroxide of the dry clay material. It was found that the organic matter was very firmly bound to the mineral phase.No marked sensitivity change was caused by the leaching. It was concluded that leaching may no be a sufficient condition for the formation of quick-clay. This is in direct contradiction with the results from similar tests byBjerrumandRosenqvist(1957). The discrepancy is discussed with special reference to the fact that Bjerrum and Rosenqvist used a clay material which was known to be a quick- clay in its natural state. Such a material may have an organic content which governs the remoulded shear strenght in the leached state.