收缩土团聚体/团聚体内质量比的估算
Estimating the aggregate/intraaggregate mass ratio of a shrinking soil
摘要：
最近引入的一个参数，骨料固体质量与骨料内基质固体质量之比（K比）与骨料可变形但不收缩的表层的平均厚度有关，是骨料土的基本性质，对收缩有重要影响。本工作的目的是建议和验证的方法来估计在任何土壤粘粒含量的K比，通过土壤质地和结构的特点。我们推导出一个方程，反映了K比和土壤质地和结构之间的相互关系。K比可以作为方程的解来估计，并且由土壤固体的平均尺寸和在烘干状态下土壤团聚体的最大尺寸来确定，与测量的收缩曲线无关。为了验证这种方法，我们使用8种土壤的可用数据。
英文摘要：
A recently introduced parameter, the ratio of an aggregate solid mass to a solid mass of an intraaggregate matrix (K ratio) is connected with the mean thickness of a deformable, but non-shrinking surface layer of aggregates and is a fundamental property of aggregated soils that essentially influences their shrinkage. The objective of this work is to suggest and validate an approach to estimating the K ratio at any soil clay content through characteristics of soil texture and structure. We derive an equation that reflects the interrelation between the K ratio and soil texture and structure. The K ratio can be estimated as the solution of the equation and is determined by the mean size of soil solids and the maximum size of soil aggregates in the oven-dried state, independently of a measured shrinkage curve. To validate the approach we use available data for eight soils.
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