ASTM D6836 PDF

Active view current version of standard. Other Historical Standards. Work Item s - proposed revisions of this standard. More D SWCCs describe the relationship between suction and volumetric water content, gravimetric water content, or degree of water saturation.

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Active view current version of standard. Other Historical Standards. Work Item s - proposed revisions of this standard. More D SWCCs describe the relationship between suction and volumetric water content, gravimetric water content, or degree of water saturation. SWCCs are also referred to as soil water retention curves, soil water release curves, or capillary pressure curves. Method A hanging column is suitable for making determinations for suctions in the range of 0 to 80 kPa.

Method B pressure chamber with volumetric measurement and Method C pressure chamber with gravimetric measurement are suitable for suctions in the range of 0 to kPa.

Method D chilled mirror hygrometer is suitable for making determinations for suctions in the range of kPa to MPa. Method E centrifuge method is suitable for making determinations in the range 0 to kPa. Method A typically is used for coarse soils with little fines that drain readily.

Methods B and C typically are used for finer soils which retain water more tightly. Method E is typically used for coarser soils where an appreciable amount of water can be extracted with suctions up to kPa. The methods may be combined to provide a detailed description of the soil water characteristic curve. The procedures in Practice D that are used to specify how data are collected, recorded, and calculated are regarded as the industry standard.

In addition, they are representative of the significant digits that should generally be retained. The procedures do not consider material variation, purpose for obtaining the data, special purpose studies, or any considerations for the objectives of the user.

Increasing or reducing the significant digits of reported data to be commensurate with these considerations is common practice. Consideration of the significant digits to be used in analysis methods for engineering design is beyond the scope of this standard. No other units of measurement are included in this standard. Mercury, or its vapor, may be hazardous to health and corrosive to materials. Caution should be taken when handling mercury and mercury-containing products.

Users should be aware that selling mercury or mercury-containing products, or both, in your state may be prohibited by state law. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Scope 1. Link to Active This link will always route to the current Active version of the standard.

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ASTM D 6836:2016

Various suctions are applied to the soil and the corresponding water contents are measured. Two different procedures are used to apply the suction. In Method A, the matric suction is applied by reducing the pore water pressure while maintaining the pore gas pressure at the atmospheric condition. In Methods B and C, the pore water pressure is maintained at atmospheric pressure, and the pore gas pressure is raised to apply the suction via the axis translation principle. Atlanta

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ASTM D6836-16

Historical Version s - view previous versions of standard. Work Item s - proposed revisions of this standard. More D The SWCC is also used in characterizing the shear strength and compressibility of unsaturated soils.

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Lab Services: Soil testing

Active view current version of standard. Other Historical Standards. Work Item s - proposed revisions of this standard. More D SWCCs describe the relationship between suction and volumetric water content, gravimetric water content, or degree of water saturation. SWCCs are also referred to as soil water retention curves, soil water release curves, or capillary pressure curves.

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