標準號：ISO 11274-1998
中文標準名稱：土壤質(zhì)量 水分保持特性的測定 實驗室試驗方法
英文標準名稱：Soil quality - Determination of the water-retention characteristic - Laboratory methods
標準類型：Z18;B10
發(fā)布日期：1999/12/31 12:00:00
實施日期：1999/12/31 12:00:00
中國標準分類號：Z18;B10
國際標準分類號：13.080.40
適用范圍：This International Standard specifies laboratory methods for determination of the soil water-retention characteristic. This International Standard 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 -5kPa to -1500kPa; d) method using a pressurized gas and pressure membrane cells for determination of matric pressures from -33kPa to -1500kPa. Guidelines are given to select the most suitable method in a particular case.