Abstract Soil compaction involves a densification and a relative variation of physical and mechanical characteristics of soils. Evaluating laboratory compaction parameters such as maximum dry density (MDD) and optimum water content (OWC) is a very important task to control field compaction for all earth-works structures. In this note over 400 publications and newly laboratory tests have been reviewed to give an overview regarding the correlations among maximum dry density, optimum water content, plastic limit, optimum degree of saturation and degree of compaction. The review confirms that viable correlations exist among maximum dry density versus optimum water content, maximum dry density against plastic limit and between optimum water content plotted against plastic limit. The correlation between optimum degree of saturation and optimum water content shows that OWC is lower for soils with larger maximum dry density. Besides with optimum water content less than 40% the relationship between optimum degree of saturation and OWC depends very much on soil type and particle size. This research comprises of a large number of soil types, various compaction energy level and methods and operators over the world.

中文翻译：

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实验室试验对土壤压实特性的概述

摘要 土壤压实涉及土壤的致密化和物理力学特性的相对变化。评估实验室压实参数，例如最大干密度 (MDD) 和最佳含水量 (OWC)，是控制所有土方工程结构的现场压实的一项非常重要的任务。在本说明中，回顾了 400 多篇出版物和新的实验室测试，以概述最大干密度、最佳含水量、塑性极限、最佳饱和度和压实度之间的相关性。审查证实，最大干密度与最佳含水量、最大干密度与塑限之间以及最佳含水量与塑限之间存在可行的相关性。最佳饱和度与最佳含水量之间的相关性表明，对于最大干密度较大的土壤，OWC 较低。除了最佳含水量小于 40% 之外，最佳饱和度和 OWC 之间的关系在很大程度上取决于土壤类型和颗粒大小。这项研究包括世界各地的大量土壤类型、各种压实能级和方法以及操作员。