Consolidation of clays compacted ‘dry’ and ‘wet’ of optimum water content
Consolidation of clays compacted ‘dry’ and ‘wet’ of optimum water content
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DOI：
10.1680/geot.1974.24.4.605
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发表时间：
1974-12
期刊：
影响因子：
5.8
通讯作者：
L. Barden
中科院分区：
文献类型：
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作者：
L. Barden
对最佳含水量的“干”和“湿”粘土固结过程的试验研究得出以下结论。“干燥”的最佳含水量的空气空隙是连续的，导致孔隙空气压力的快速消散;因此，没有在经典意义上的固结和整个压缩时间的行为可以表示在一个简单的流变模型。这种状态下的沉降问题与湿陷有关。“湿”的最佳，闭塞的空气空隙，有可能高孔隙水压力和固结是一个主要的工程问题。可以看出，太沙基理论通常与试图适当考虑闭塞空气效应的任何更复杂的理论一样相关。然而，太沙基理论的相关性下降，因为过渡接近最佳含水量的区域。一个单独的过渡过程的存在不能被忽视，特别是在…
An experimental investigation of the consolidation process in clays ccmpacted ‘dry’ and ‘wet’ of optimum water content has led to the following findings. ‘Dry’ of optimum water content the air voids are continuous, resulting in rapid dissipation of pore-air pressures; hence there is no consolidation in the classical sense and the entire compression-time behaviour can be represented in terms of a simple rheological model. The settlement problem in this state is associated with collapse on wetting. ‘Wet’ of optimum, with occluded air voids, there is the likelihood of high pore-water pressures and consolidation is a major engineering problem. It is seen that Terzaghi theory is generally as relevant as any of the more complex theories attempting to take proper account of the effect of the occluded air. However, the relevance of Terzaghi theory decreases as the transition is approached in the region of optimum water content. The existence of a separate transition process cannot be dismissed, particularly in th...