Relationships among plasticity, clay fraction and activity of clay–sand mixtures
Relationships among plasticity, clay fraction and activity of clay–sand mixtures
复制标题
粘土砂混合物的可塑性、粘土分数和活性之间的关系
DOI：
--
复制
发表时间：
2022
影响因子：
--
通讯作者：
E. Karakan
中科院分区：
文献类型：
--
作者：
E. Karakan
众所周知，标准建议通过根据粘土的塑性（其是液体和塑性极限的函数，而不是活性）掺入不同数量和类型的粘土来对细粒土进行分类。液限相同的粘土砂混合料，其工程特性因粘土类型和含量不同而不同。在这项研究中，作者自己的数据和数据从文献中汇编，以获得一个数据库，包括索引和一致性标识符的粘土砂混合物。在这方面，作者自己的数据是基于三种不同类型的砂（砂1，砂2，粉砂级石英）和两种类型的粘土（高岭石和膨润土）。通过对世界各地不同类型土壤的试验研究，建立了土壤活性、液限、塑限、塑性指数和粘粒含量之间的关系。本研究的目的是发展一系列的关系，使用液限和塑限值。考虑了低液限（LL ≤ 50）、高液限（50 < LL ≤ 100）和极高液限（LL > 100）土壤的影响。研究表明，根据粘土含量（< 2 µm）和土壤活性区分粗颗粒和细颗粒含量可能有助于表征和预测土壤的工程特性。
It is known that the standards suggest classifying fine-grained soils by incorporating different amounts and types of clays based on their plasticity which is a function of the liquid and plastic limit, rather than activity. Engineering behavior of clay–sand mixtures with same liquid limit may be different due to clay type and content. In this study, authors’ own data and data from literature are compiled to obtain a database including index and consistency identifiers of clay–sand mixtures. In this regard, author’s own data are based on three different types of sands (Sand1, Sand2, silt-sized quartz) and two types of clays (kaolinite and bentonite). A vast amount of data from past studies including tests on different types of soils around the world were also compiled to establish relationships among soil activity, liquid limit, plastic limit, plasticity index and clay fraction. This study aims to develop a series of relations using liquid limit and plastic limit values. Effects of soils with low (LL ≤ 50), high (50 < LL ≤ 100) and very high (LL > 100) liquid limits are taken into account. It is revealed that the distinction between coarse and fine content based on their clay content (< 2 µm) and soil activity might be useful in characterization and prediction of engineering behavior of soils.