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ISO 11274:2019

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

SKU: iso_068256_167111 Published by ISO Publication Year 2019 2 Edition 23 pages

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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 âˆ’50 kPa; b) method using a porous plate and burette apparatus for determination of matric pressures from 0 kPa to âˆ’20 kPa; c) method using a pressurized gas and a pressure plate extractor for determination of matric pressures from âˆ’5 kPa to âˆ’1 500 kPa; d) method using a pressurized gas and pressure membrane cells for determination of matric pressures from âˆ’33 kPa to âˆ’1 500 kPa. Guidelines are given to select the most suitable method in a particular case.

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GST REG No R119441681
QST REG No R1006017360

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ISO 11274:2019

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