Compaction characteristics of the soil have the great importance for practically achieving the desired strength, permeability and compressibility of soil during the construction. Standard compaction test (SCT) and modified compaction test (MCT) are two very famous laboratory test methods to determine the compaction characteristics of soils worldwide. Modest efforts have been made in the past to correlate the compaction parameters drawn from these two tests with each other. In the present study, authors are established the models to predict the modified compaction parameters (γ_dmax(m) and w_opt(m)) by using standard compaction parameters (γ_dmax(s) and w_opt(s)) or vice versa for the fine-grained soils. Such models can extricate from performing additional tedious and laborious compaction tests. Moreover, the effect of plasticity on the compaction parameters obtained using standard and modified effort is also discussed. Total 156 disturbed fine-grained soil samples were collected from different areas of Pakistan. The index properties tests and laboratory compaction tests were performed using these soil samples. On the basis of index properties tests, these soil samples were classified into different sub-groups of fine-grained soil as per the Unified Soil Classification System. Relationships between the plasticity index (I_P) and compaction parameters of both MCT and SCT were also accomplished. Out of 156 soil samples, test results of 126 samples are used to develop the correlations and test results data of 30 samples was used to validate the developed correlations. The percentage error in the correlation between γ_dmax(m) and γ_dmax(s) is observed to be only ± 0.4% and for the correlation between w_opt(m) and w_opt(s) the percentage error is observed to be ± 2.7%.

中文翻译：

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使用标准方法和改进方法评估细粒土的压实参数

土壤的压实特性对于在施工期间实际获得所需的土壤强度，渗透性和可压缩性至关重要。标准压实测试（SCT）和改良压实测试（MCT）是两种非常著名的实验室测试方法，可用来确定全球土壤的压实特性。过去，人们已经做出了一些努力，使从这两个试验得出的压实参数相互关联。在本研究中，作者建立的模型来预测改性压实参数（γ _DMAX（M）和瓦特_{选择（M）} ）通过使用标准压实参数的（γ _DMAX（S）和瓦特_{选择（一个或多个）}），反之亦然。这样的模型可能会因为执行额外的繁琐而繁琐的压实测试而感到困惑。此外，还讨论了可塑性对使用标准功和改进功获得的压实参数的影响。从巴基斯坦不同地区收集了总共156个扰动的细粒土壤样品。使用这些土壤样品进行了指数特性测试和实验室压实测试。根据指标性质测试，根据统一土壤分类系统，将这些土壤样品分为细粒土壤的不同子组。塑性指数之间的关系（我_P），同时还完成了MCT和SCT的压实参数。在156个土壤样本中，使用126个样本的测试结果来建立相关性，并使用30个样本的测试结果数据来验证所建立的相关性。在之间的相关性的百分比误差γ _DMAX（M）和γ _DMAX（S） ，观察到只有±0.4％和之间的相关性瓦特_{选择（M）}和瓦特_{选择（一个或多个）}被观察到的百分比误差为± 2.7％。