EN ISO 11274:2019
土壤质量.水分保持特性的测定.实验室法

2020-04

土壤质量.水分保持特性的测定.实验室法 是非强制性国家标准，您可以免费下载预览页

非常抱歉，我们暂时无法提供预览，您可以试试：免费下载 EN ISO 11274:2019 前三页，或者稍后再访问。

您也可以尝试购买此标准，
点击右侧 “购买” 按钮开始采购（由第三方提供）。

注意：点击下载后，生成下载文件时间比较长，请耐心等待......

适用范围: This document specifies laboratory methods for determination of the soil water-retention characteristic. This document applies only to measurements of the drying or desorption curve. Four methods are described to cover the complete range of soil water pressures as follows: a) method using sand, kaolin or ceramic suction tables for determination of matric pressures from 0 kPa to −50 kPa; b) method using a porous plate and burette apparatus for determination of matric pressures from 0 kPa to −20 kPa; c) method using a pressurized gas and a pressure plate extractor for determination of matric pressures from −5 kPa to −1 500 kPa; d) method using a pressurized gas and pressure membrane cells for determination of matric pressures from −33 kPa to −1 500 kPa. Guidelines are given to select the most suitable method in a particular case.

EN ISO 11274:2019土壤质量.水分保持特性的测定.实验室法