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  • ISO 11074-2-1998 - 中外标准 - - 1998/11 - 作废
  • ISO 11274-1998 - 中外标准 - - 1998/6 - 现行
    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.
    含量园林设计土壤采样土壤组分水力(利)工程质量水分保持值实验室试验测量物理化学法含量测定土壤水保持指数农业定义土壤试验土壤的物理性质保持土壤普查土壤试验规范(验收)地下水管理AgricultureComposition of the groundContentDefinitionsDetermination of contentHydraulic engineeringLaboratory testingLaboratory testsLandscapingMeasurementPhysical properties of soilsPhysico-chemical methodsQualityRetentionRetention indexSoil samplingSoil surveysSoil testingSoil waterSoilsSpecification (approval)Sub-surface water managementTestingWaterWater retention value
  • ISO 11277-1998 - 中外标准 - - 1998/5 - 作废
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