Coop et al. (2004) found that for a carbonate sand shearing to extremely large strains allowed the soil to reach a stable grading; findings also reported by others for a limited range of sands, typically sedimentary and often weak grained. This paper describes similar tests on a soil of very different geological origin, a weathered soil, that confirms similar patterns of behaviour. Tests investigating factors affecting the final grading for both soils indicated small effects of shearing velocity but significant effects of the initial grading, highlighting that the final fractal dimension is not a constant.

中文翻译：

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影响砂粒最终分级的因素

Coop等。（2004）发现，对于碳酸盐砂来说，剪切到极大的应变可以使土壤达到稳定的等级。其他人也报道了有限范围的沙子的发现，这些沙子通常是沉积性的，通常是粒状的。本文介绍了在地质来源完全不同的土壤（风化土壤）上进行的相似测试，证实了类似的行为方式。对两种土壤均能达到最终等级的因素进行的试验表明，剪切速度的影响很小，但初始等级的影响却很大，这表明最终的分形维数不是一个常数。