ISO 17892-2:20 14规定了三种测定土壤容重的方法，包括:a)线性测量方法；b)浸没在流体中的方法；c)流体置换法。 ISO 17892-2:20 14适用于岩土工程勘察范围内土壤容重的实验室测定。 线性测量方法适用于确定形状规则的土壤样品的容重，包括为其他试验准备的样品。使用的样品是矩形棱柱或具有圆形横截面的圆柱体。 浸入流体法包括通过测量天然或压实土壤样品在空气中的质量和悬浮在流体中时的表观质量来确定其容重。当可以获得合适尺寸的材料块时，可以使用该方法。流体置换法包括通过测量土壤样品在空气中的质量和通过浸泡置换的流体质量来确定土壤样品的容重。当可以获得合适尺寸的材料块时，可以使用该方法。 如果使用浸入流体法或流体置换法，并且如果流体可能渗透到样品中（例如水），则应在测试前对样品进行涂层以防止流体渗透。 土壤的容重可用于确定作为深度函数的原位覆盖层应力。 如果需要，可以根据堆密度和水含量（如果已知）计算样品的干密度。

ISO 17892-2:2014 specifies three methods for the determination of the bulk density of soils, comprising: a) linear measurement method; b) immersion in fluid method; c) fluid displacement method. ISO 17892-2:2014 is applicable to the laboratory determination of the bulk density of soil within the scope of geotechnical investigations. The linear measurement method is suitable for the determination of the bulk density of a specimen of soil of regular shape, including specimens prepared for other tests. The specimens used are either rectangular prisms or cylinders with circular cross sections. The immersion in fluid method covers the determination of the bulk density of a specimen of natural or compacted soil by measuring its mass in air and its apparent mass when suspended in fluid. The method may be used when lumps of material of suitable size can be obtained. The fluid displacement method covers the determination of the bulk density of a specimen of soil by measuring its mass in air and the mass of fluid displaced by immersion. The method may be used when lumps of material of suitable size can be obtained. If the immersion in fluid method or fluid displacement method is used, and if the fluid is likely to penetrate into the specimen (eg water) the specimen should be coated before testing to prevent fluid penetration. The bulk density of a soil is useful in the determination of the in situ overburden stress as a function of depth. If required, the dry density of a specimen may be calculated from the bulk density and the water content, if known.