Problems in identifying the effects of structure and critical state in a soil with a transitional behaviour
Problems in identifying the effects of structure and critical state in a soil with a transitional behaviour
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DOI：
10.1680/geot.2006.56.7.445
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发表时间：
2006-09
期刊：
影响因子：
5.8
通讯作者：
P. Ferreira;A. Bica
中科院分区：
文献类型：
--
作者：
P. Ferreira;A. Bica
这项工作表明，一些具有介于粘土和砂之间的中间特性的土壤没有唯一的压缩线，正如Martins等人所指出的那样。这里已经表明，重塑土壤不能确定唯一的临界州线。虽然这里所示的结果是针对再造残积土的，但在粉土以及砂和高岭土的混合物中也发现了类似的压缩特性。然而，已经发现，临界状态框架可以使用取决于初始比容的平行临界状态线族来应用。这项工作提出的问题之一是，如果重塑材料的固有特性不是唯一的，如何量化结构的影响。重塑材料的压缩线和临界状态线不仅不唯一，而且与天然材料具有明显不同的梯度。
This work shows that some soils with an intermediate behaviour between clays and sands do not have a unique compression line, as has also been pointed out by Martins et al. It has been shown here that a unique critical state line could not be determined for the remoulded soil. Although the results shown here are for a reconstituted residual soil, similar behaviour in compressibility has been found in silts and mixtures of sand and kaolin. However, it has been found that the critical state framework can be applied using a family of parallel critical state lines depending on the initial specific volume. One of the questions raised by this work is how the effects of structure can be quantified if the intrinsic properties of the remoulded material are not unique. The compression and critical state lines of the remoulded material are not only non-unique but also of a distinctly different gradient from the natural material.