{"product_id":"gcl-hydrostatic-pressure-tester-25-mpa","title":"GCL Hydrostatic Pressure Tester (2.5 MPa)","description":"\u003ch2\u003eGCL Hydrostatic Pressure Tester (2.5 MPa) – QualiGTX™ GCL HS\u003c\/h2\u003e\n\u003cp\u003eThe QualiGTX™ GCL HS is designed to measure the maximum water pressure a sodium bentonite geosynthetic clay liner\n    (GCL) can withstand before water penetrates through its thickness. This measurement helps materials laboratories,\n    GCL manufacturers, and construction quality control teams determine whether liner rolls meet specified project\n    acceptance criteria. During testing, the instrument applies controlled water pressure to a securely mounted Φ55 mm\n    specimen and monitors its resistance over a defined period using an integrated digital timer.\u003c\/p\u003e\n\u003cp\u003eA high-strength aluminum alloy specimen holder provides the rigidity required for pressure testing without making\n    sample handling unnecessarily difficult. Its lightweight construction allows a single technician to install and\n    remove specimens efficiently, particularly when processing large testing batches. With a maximum pressure capacity\n    of 2.5 MPa, equivalent to approximately 250 meters of water head, the instrument accommodates testing requirements\n    for landfill barriers, reservoirs, and deep underground structures using a single laboratory system.\u003c\/p\u003e\n\u003cp\u003eThe complete testing procedure is managed through a large color touchscreen, which provides access to pressure\n    settings, test duration, and real-time operating status. Automatic timing eliminates the need for manual stopwatch\n    operation and helps maintain consistent testing procedures. Its compact, low-profile configuration also makes the\n    QualiGTX™ GCL HS suitable for installation alongside permeability and swell index testing equipment in geosynthetics\n    laboratories.\u003c\/p\u003e\n\u003ch2\u003eGCL Hydrostatic Pressure Tester (2.5 MPa) – QualiGTX™ GCL HS Applications\u003c\/h2\u003e\n\u003cp\u003eThe QualiGTX™ GCL HS supports quality assessment, production inspection, and material evaluation wherever sodium\n    bentonite blankets provide hydraulic containment or waterproofing. Its applications include:\u003c\/p\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eLandfill Containment and Closure Systems: Determines whether GCL materials can resist the leachate pressure\n            head required by landfill base liners, side slopes, and closure designs.\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eBentonite Blanket Manufacturing Quality Control: Supports production batch inspection by identifying\n            inconsistent bentonite distribution and inadequate needle-punch bonding before finished rolls are released\n            for delivery.\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eCanals, Reservoirs, and Water Retention Facilities: Assesses the ability of bentonite liners to maintain an\n            effective water barrier under prolonged hydrostatic loading in irrigation channels and raw water storage\n            installations.\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eTunnel and Underground Waterproofing: Evaluates GCL performance under groundwater pressure behind tunnel\n            linings, diaphragm walls, and basement floor slabs.\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eMining and Industrial Liquid Containment: Checks barrier integrity in tailings storage facilities, heap leach\n            pads, and evaporation ponds where containment of process solutions is essential.\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eIndependent Materials Testing Laboratories: Provides third-party performance verification of manufacturer and\n            supplier claims for procurement assessments, tender submissions, and technical dispute resolution.\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eMunicipal Infrastructure Quality Inspection: Allows inspection teams to assess delivered GCL rolls against\n            acceptance requirements before installation begins at the construction site.\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eGeosynthetic Material Research and Development: Facilitates comparative testing of different bentonite\n            grades, carrier geotextiles, and manufacturing bonding methods to evaluate their influence on hydraulic\n            resistance.\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eGCL Hydrostatic Pressure Tester (2.5 MPa) – QualiGTX™ GCL HS Key Features\u003c\/h2\u003e\n\u003cp\u003eThe QualiGTX™ GCL HS combines controlled pressure application with straightforward specimen handling and automated\n    test monitoring, making extended hydrostatic resistance evaluations easier to conduct consistently.\u003c\/p\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eMaximum Pressure of 2.5 MPa: Provides a broad testing range for standard material acceptance procedures as\n            well as demanding applications involving deep burial conditions and elevated groundwater or liquid pressure.\n        \u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eHigh-Strength Aluminum Alloy Specimen Holder: Maintains a stable specimen assembly under applied hydraulic\n            pressure while keeping the holder lightweight enough for convenient handling and faster specimen\n            replacement.\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eLarge Color Touchscreen: Brings pressure settings, elapsed testing time, and current operating conditions\n            together on one screen for convenient monitoring throughout the procedure.\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eAutomatic Digital Timer: Controls and tracks the specified pressure-holding period without requiring\n            continuous manual stopwatch operation, reducing the possibility of timing inconsistencies and\n            operator-related errors.\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eCompact Bench-Mounted Design: Features a low-profile, space-conscious structure that fits standard laboratory\n            workbenches and can be positioned alongside other geosynthetic testing instruments.\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eStraightforward Test Operation: Minimizes setup complexity and manual adjustments, allowing laboratory\n            technicians to perform testing without an unnecessarily complicated operating procedure.\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eFull-Circumference Specimen Sealing: Secures the specimen around its entire perimeter to prevent water from\n            escaping at the edges, ensuring that the applied pressure acts across the specimen surface during\n            evaluation.\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTheory and Test Method\u003c\/h2\u003e\n\u003cp\u003eThe water resistance of a geosynthetic clay liner comes primarily from the hydration and expansion characteristics of\n    sodium montmorillonite, the principal clay component of sodium bentonite. When exposed to water, the clay absorbs\n    moisture between its mineral layers and expands within the confinement provided by the surrounding carrier\n    geotextiles. This expansion consolidates the bentonite into a dense, gel-like barrier that fills available voids and\n    restricts continuous water-flow channels.\u003c\/p\u003e\n\u003cp\u003eUnlike geomembranes, which depend largely on the mechanical integrity and strength of a continuous polymer sheet,\n    GCLs achieve their sealing performance through the hydraulic behavior of confined, hydrated clay. Hydrostatic\n    pressure testing therefore determines whether the bentonite develops a sufficiently continuous barrier and retains\n    its water-blocking capability under sustained hydraulic loading.\u003c\/p\u003e\n\u003cp\u003eFor the test, a specimen is secured inside the aluminum alloy holder, creating a sealed assembly around its\n    circumference. Water is introduced into the chamber above the specimen, and the system progressively increases the\n    pressure until the programmed test level is reached. The specimen holder maintains the perimeter seal so that the\n    pressure difference acts across the bentonite blanket itself rather than being lost through leakage around its\n    edges. The appearance of water on the opposite, downstream surface indicates breakthrough and marks the end of the\n    test.\u003c\/p\u003e\n\u003cp\u003eThe length of time a specimen withstands the applied pressure is just as important as the pressure level it resists.\n    Bentonite continues to absorb water and undergo internal rearrangement throughout exposure to hydrostatic loading.\n    Consequently, a specimen may remain intact during the initial pressure increase but develop a leakage path after\n    prolonged exposure to the same pressure.\u003c\/p\u003e\n\u003cp\u003eThe QualiGTX™ GCL HS addresses this requirement through automatic timing of the programmed holding period. The\n    integrated digital timer tracks the complete test duration, allowing the operator to assess whether the specimen\n    maintains its hydraulic barrier throughout the specified interval. This time-based evaluation provides laboratories\n    with a more reliable basis for determining pass-or-fail performance than a measurement taken immediately after\n    reaching the target pressure.\u003c\/p\u003e\n\n\n\u003ch2\u003eGCL Hydrostatic Pressure Tester (2.5 MPa) - QualiGTX™ GCL HS Technical Specifications\u003c\/h2\u003e\n\u003ctable class=\"table table-style-align-center\" align=\"center\" border=\"1\" cellspacing=\"0\" cellpadding=\"0\"\u003e\n    \u003cthead\u003e\n        \u003ctr\u003e\n            \u003cth\u003eParameter\u003c\/th\u003e\n            \u003cth\u003eSpecification\u003c\/th\u003e\n        \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n        \u003ctr\u003e\n            \u003ctd\u003eSpecimen Diameter\u003c\/td\u003e\n            \u003ctd\u003eΦ55 mm\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003eMaximum Test Pressure\u003c\/td\u003e\n            \u003ctd\u003e2.5 MPa\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003eSpecimen Holder Material\u003c\/td\u003e\n            \u003ctd\u003eHigh-strength aluminum alloy\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003eControl System\u003c\/td\u003e\n            \u003ctd\u003eLarge color touchscreen with automatic digital timing\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003eVoltage\u003c\/td\u003e\n            \u003ctd\u003e220 V, 50 Hz (110V is also available)\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003eDimensions (W × D × H)\u003c\/td\u003e\n            \u003ctd\u003e700 × 750 × 1200 mm\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003eNet Weight\u003c\/td\u003e\n            \u003ctd\u003e75 kg\u003c\/td\u003e\n        \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Qualitest USA LC","offers":[{"title":"Default Title","offer_id":53605890851127,"sku":null,"price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0786\/1859\/1543\/files\/gcl-hydrostatic-pressure-tester_5df774b5-19e4-4b36-bf76-7680b4d0754b.webp?v=1794486602","url":"https:\/\/qualitest.us\/ar\/products\/gcl-hydrostatic-pressure-tester-25-mpa","provider":"Qualitest USA LC","version":"1.0","type":"link"}