Abstract: A method for measuring pore pressure is provided using a rigid piezometer that does not need a filter and can be used to measure pore-water pressures in partially frozen soils. This method also can be used to measure pore pressure in a porous media when the hydraulic conductivity of the porous media is low or there is limited amount of pore-fluid available to transfer the pressures. A piezometer is also provided, including: a tube for hydraulic fluid; first and second valves to control fluid flow in the tube and into a porous medium; and a fitting wherein a pressure sensor is positioned to measure fluid pressure in the hydraulic fluid in the tube and a hydraulic fluid droplet ejected from an end of the tube into the porous medium; and an interface of the hydraulic fluid with the pore-fluid within the porous medium, using the droplet placed into the porous medium. The tube (or part of the tube), valves, fittings, and pressure sensor may be enclosed in a housing.

Abstract: A method for measuring pore pressure is provided using a rigid piezometer that does not need a filter and can be used to measure pore-water pressures in partially frozen soils. This method also can be used to measure pore pressure in a porous media when the hydraulic conductivity of the porous media is low or there is limited amount of pore-fluid available to transfer the pressures. A piezometer is also provided, including: a tube for hydraulic fluid; first and second valves to control fluid flow in the tube and into a porous medium; and a fitting wherein a pressure sensor is positioned to measure fluid pressure in the hydraulic fluid in the tube and a hydraulic fluid droplet ejected from an end of the tube into the porous medium; and an interface of the hydraulic fluid with the pore-fluid within the porous medium, using the droplet placed into the porous medium. The tube (or part of the tube), valves, fittings, and pressure sensor may be enclosed in a housing.

Abstract: A method for measuring pore pressure is provided using a rigid piezometer that does not need a filter and can be used to measure pore-water pressures in partially frozen soils. This method also can be used to measure pore pressure in a porous media when the hydraulic conductivity of the porous media is low or there is limited amount of pore-fluid available to transfer the pressures. A piezometer is also provided, including: a tube for hydraulic fluid; first and second valves to control fluid flow in the tube and into a porous medium; and a fitting wherein a pressure sensor is positioned to measure fluid pressure in the hydraulic fluid in the tube and a hydraulic fluid droplet ejected from an end of the tube into the porous medium; and an interface of the hydraulic fluid with the pore-fluid within the porous medium, using the droplet placed into the porous medium. The tube (or part of the tube), valves, fittings, and pressure sensor may be enclosed in a housing.