岩土工程勘察和试验 土壤的识别和分类 第2部分：分类原则

[中文适用范围]： 本文件规定了工程土壤最常用的材料特性分类的基本原则。 它应与 ISO 14688-1 一起阅读，ISO 14688-1 给出了土壤识别和描述的规则。 相关特征可能会有所不同，因此，对于特定项目或材料，描述性和分类术语的更详细细分可能是合适的。 由于各地地质条件的差异，采取了加强相关分类标准的做法。 本文件中建立的分类原则允许根据现场和实验室测试结果将土壤分为具有相似成分和岩土特性的组，以了解其是否适合岩土工程目的。 本文件适用于原位天然土、人工改造的天然土和合成材料。 EN 16907-2 中给出了土方工程中使用的更详细的分类。 注 1 ISO 14689 涵盖了岩石的识别和描述。 土壤和岩石之间的中间材料的识别和描述使用本文件 ISO 14688-1 中的程序进行。 注 2 用于土壤学目的的土壤的识别和分类，如ISO 25177 涵盖了土壤保护和污染区域修复测量框架。 [外文原描述]： ISO 14688-2:2017 specifies the basic principles for classification of those material characteristics most commonly used for soils for engineering purposes. It is intended to be read in conjunction with ISO 14688‑1, which gives rules for the identification and description of soils. The relevant characteristics could vary and therefore, for particular projects or materials, more detailed subdivisions of the descriptive and classification terms could be appropriate. Due to differences in local geological conditions, practices to enhance relevant classification criteria are used. The classification principles established in this document allow soils to be classified into groups of similar composition and geotechnical properties, based on the results of field and laboratory tests with respect to their suitability for geotechnical engineering purposes. ISO 14688-2:2017 is applicable to natural soil in situ, natural soil reworked artificially and synthetic materials. A more detailed classification specific to use in earthworks is given in EN 16907‑2. NOTE 1 Identification and description of rocks are covered by ISO 14689. Identification and description of materials intermediate between soil and rock are carried out using the procedures in ISO 14688‑1, this document and ISO 14689, as appropriate. NOTE 2 The identification and classification of soil for pedological purposes, as well as in the framework of measurements for soil protection and for remediation of contaminated areas, is covered by ISO 25177.