Abstract

A geosynthetic clay liner comprising a first geotextile layer, a second geotextile layer, and a clay layer provided between the first and second geotextile layers. The geosynthetic clay liner comprises electrically conductive material.

IPC Classes  ?

• E02D 19/18 - Restraining of underground water by damming or interrupting the passage of underground water by making use of sealing aprons
• E02D 31/00 - Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
• G01M 3/16 - Investigating fluid tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means
• G01M 3/40 - Investigating fluid tightness of structures by using electric means, e.g. by observing electric discharges
• E02B 3/16 - Sealings or joints

Abstract

A membrane 10 is a geomembrane 10, which takes the form of a non-conductive sheet 11. A conductive layer 13 is printed on to the sheet 11, in this instance in a geometric pattern of a rectangular grid. The lines of the grid 13 are conductive and connected to each other, with non-conductive gaps 15 disposed between the grid lines. Accordingly, a conductive linear network is formed, which has the requisite conductivity for leak detection.

IPC Classes  ?

• E04D 13/00 - Special arrangements or devices in connection with roof coverings; Roof drainage
• G01M 3/16 - Investigating fluid tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means
• G01M 3/40 - Investigating fluid tightness of structures by using electric means, e.g. by observing electric discharges
• E02D 31/00 - Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution

Abstract

A wall unit (V) for a retaining structure (100) comprises a foot portion (1 a') and a wall portion (1 b'), wherein the wall portion (1 b') is inclined with respect to the foot portion (1 a'), so that it extends over the foot portion (1 a'). Accordingly, the wall unit (1 ') is stable during construction and assembly. A corner unit (7') for a retaining structure (100) is adapted to engage with two wall units (1 '). A retaining structure (100) comprises at least one wall unit (1 ').

IPC Classes  ?

• E04B 1/00 - Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
• G01M 3/16 - Investigating fluid tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means
• E04C 5/12 - Anchoring devices
• E04B 1/20 - Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stone-like material
• E02D 31/00 - Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
• B65D 90/50 - Arrangements of indicating or measuring devices of leakage-indicating devices
• E03B 3/03 - Special vessels for collecting or storing rain-water for use in the household, e.g. water-butts
• E04H 7/18 - Containers for fluids or gases; Supports therefor mainly of concrete, e.g. reinforced concrete, or other stone-like material
• E02D 27/01 - Flat foundations
• E03F 11/00 - Cesspools
• E03B 11/12 - Arrangements or adaptations of tanks for water supply for public or like main water supply of high-level tanks
• E03B 11/14 - Arrangements or adaptations of tanks for water supply for public or like main water supply of underground tanks
• E04B 1/35 - Extraordinary methods of construction, e.g. lift-slab, jack-block

Abstract

A membrane is a geomembrane, which takes the form of a non-conductive sheet. A conductive layer is printed on to the sheet, in this instance in a geometric pattern of a rectangular grid. The lines of the grid are conductive and connected to each other, with non-conductive gaps disposed between the grid lines. Accordingly, a conductive linear network is formed, which has the requisite conductivity for leak detection.

IPC Classes  ?

• E02D 31/00 - Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution

Abstract

A sensor and system for monitoring integrity of a waterproofing system membrane. A geomembrane integrity monitoring system includes control means 18 and a plurality of sensors 20. The sensors 20 are electrically isolated from each other and in electrical communication to the control means 18. The sensors 20 have a sheet form.

IPC Classes  ?

• G01R 31/00 - Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
• G01M 3/16 - Investigating fluid tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means
• E04D 13/00 - Special arrangements or devices in connection with roof coverings; Roof drainage
• E04D 5/00 - Roof covering by making use of flexible material, e.g. supplied in roll form
• E04D 7/00 - Roof covering by sealing masses applied in situ; Gravelling of flat roofs

Abstract

A membrane 10 is a geomembrane 10, which takes the form of a non-conductive sheet 11. A conductive layer 13 is printed on to the sheet 11, in this instance in a geometric pattern of a rectangular grid. The lines of the grid 13 are conductive and connected to each other, with non-conductive gaps 15 disposed between the grid lines. Accordingly, a conductive linear network is formed, which has the requisite conductivity for leak detection.

IPC Classes  ?

• E02D 31/00 - Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution

Abstract

A fluid retaining structure comprising an electronic leak detection and location, ELDL, system, wherein the fluid retaining structure comprises inner and outer liners (18, 16) that form electrical isolation layers of the ELDL system, wherein an electrically conductive signal layer (10, 12) of the ELDL system provides structural rigidity to the fluid retaining structure.

IPC Classes  ?

• B65D 90/50 - Arrangements of indicating or measuring devices of leakage-indicating devices

Abstract

A geomembrane integrity monitoring system comprises control means (18) and a plurality of sensors (20), wherein the sensors (20) are electrically isolated from each other and in electrical communication to the control means (18), wherein the sensors (20) have a sheet form.

IPC Classes  ?

• G01M 3/00 - Investigating fluid tightness of structures
• G01M 3/16 - Investigating fluid tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means
• G01M 3/40 - Investigating fluid tightness of structures by using electric means, e.g. by observing electric discharges

Abstract

A geomembrane integrity monitoring system comprises control means (18) and a plurality of sensors (20), wherein the sensors (20) are electrically isolated from each other and in electrical communication to the control means (18), wherein the sensors (20) have a sheet form.

IPC Classes  ?

• G01M 3/16 - Investigating fluid tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means

Abstract

A conductive mesh (2) is a mesh comprising first members (21) and second members (22), spaced so as to form a grid. The conductive mesh (2) is provided as a single conductive layer, having the requisite strength to support itself without need of a plastic support or a non-conductive layer. The conductive mesh (2) may comprise polyethylene, though it will be understood that other plastics may be employed. The conductive mesh (2) also comprises carbon in order to provide conductive properties.

IPC Classes  ?

• G01M 3/16 - Investigating fluid tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means
• G01M 3/40 - Investigating fluid tightness of structures by using electric means, e.g. by observing electric discharges
• G01M 3/18 - Investigating fluid tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means for valves