ISO-11274 Soil quality - Determination of the water-retention characteristic - Laboratory methods

ISO-11274 - 2ND EDITION - CURRENT
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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.

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13.080.40 (Hydrological properties of soils)

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Document Number

ISO 11274:2019

Revision Level

2ND EDITION

Status

Current

Publication Date

Sept. 1, 2019

Committee Number

ISO/TC 190/SC 3