土壤质量.含水量的筛选方法.折射法测定

[中文适用范围]： 本文件规定了快速测定土壤水分含量的方法。 该方法基于蔗糖溶液与土壤样品混合后的折射率测量。 适用于地质或岩土研究以及岩土工程中含水量的测定。 此外，它还可用于农业和土木工程等多个领域的商业工作。 工作范围高达约 50% 的水分含量。 该方法的精度通常在 0.5% 到 1% 之间，具体取决于所使用的折光仪的类型。 该方法的结果受土壤基质的强烈影响。 与 ISO 11465 中描述的标准方法相比，粘土和/或有机物含量较高将导致水含量值显着降低。 [外文原描述]： This document specifies a method for rapid determination of water content in soils. The method is based on refractive index measurement of a sucrose solution after it is mixed with a soil sample. It is applicable to the determination of water content in geological or geotechnical research as well as geotechnical engineering. In addition, it can be used for commercial work in a variety of fields, e.g. agriculture and civil engineering. The working range is up to approximately 50 % moisture content. The precision of the method typically ranges between 0,5 % and 1 % and depends on the type of refractometer that is used. The result of this method is strongly influenced by soil matrices. Higher contents of clay and/or organic matter will lead to significant lower values for water content compared to standard methods such as that described in ISO 11465.