{"id":57,"date":"2025-09-10T15:20:34","date_gmt":"2025-09-10T15:20:34","guid":{"rendered":"https:\/\/geomas.com\/?page_id=57"},"modified":"2026-07-28T08:52:31","modified_gmt":"2026-07-28T08:52:31","slug":"geosynthetic-clay-liner","status":"publish","type":"page","link":"https:\/\/geomas.com\/en\/products\/geosynthetic\/geosynthetic-clay-liner\/","title":{"rendered":"Geosynthetic Clay Cover"},"content":{"rendered":"<div data-elementor-type=\"wp-page\" data-elementor-id=\"57\" class=\"elementor elementor-57\" data-elementor-settings=\"{&quot;element_pack_global_tooltip_width&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;element_pack_global_tooltip_width_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;element_pack_global_tooltip_width_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;element_pack_global_tooltip_padding&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;top&quot;:&quot;&quot;,&quot;right&quot;:&quot;&quot;,&quot;bottom&quot;:&quot;&quot;,&quot;left&quot;:&quot;&quot;,&quot;isLinked&quot;:true},&quot;element_pack_global_tooltip_padding_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;top&quot;:&quot;&quot;,&quot;right&quot;:&quot;&quot;,&quot;bottom&quot;:&quot;&quot;,&quot;left&quot;:&quot;&quot;,&quot;isLinked&quot;:true},&quot;element_pack_global_tooltip_padding_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;top&quot;:&quot;&quot;,&quot;right&quot;:&quot;&quot;,&quot;bottom&quot;:&quot;&quot;,&quot;left&quot;:&quot;&quot;,&quot;isLinked&quot;:true},&quot;element_pack_global_tooltip_border_radius&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;top&quot;:&quot;&quot;,&quot;right&quot;:&quot;&quot;,&quot;bottom&quot;:&quot;&quot;,&quot;left&quot;:&quot;&quot;,&quot;isLinked&quot;:true},&quot;element_pack_global_tooltip_border_radius_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;top&quot;:&quot;&quot;,&quot;right&quot;:&quot;&quot;,&quot;bottom&quot;:&quot;&quot;,&quot;left&quot;:&quot;&quot;,&quot;isLinked&quot;:true},&quot;element_pack_global_tooltip_border_radius_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;top&quot;:&quot;&quot;,&quot;right&quot;:&quot;&quot;,&quot;bottom&quot;:&quot;&quot;,&quot;left&quot;:&quot;&quot;,&quot;isLinked&quot;:true}}\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6c7a55e3 e-flex e-con-boxed e-con e-parent\" data-id=\"6c7a55e3\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-10b7d6e2 elementor-widget elementor-widget-breadcrumbs\" data-id=\"10b7d6e2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"breadcrumbs.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<nav aria-label=\"breadcrumbs\" class=\"rank-math-breadcrumb\"><p><span class=\"last\">Homepage<\/span><\/p><\/nav>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-2473f855 e-flex e-con-boxed e-con e-parent\" data-id=\"2473f855\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7869f25a elementor-widget elementor-widget-image\" data-id=\"7869f25a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"1520\" height=\"370\" src=\"https:\/\/geomas.com\/wp-content\/uploads\/2025\/09\/0n3a3704-1.jpg\" class=\"attachment-full size-full wp-image-739\" alt=\"Geomas Geosynthetic Field Application\" srcset=\"https:\/\/geomas.com\/wp-content\/uploads\/2025\/09\/0n3a3704-1.jpg 1520w, https:\/\/geomas.com\/wp-content\/uploads\/2025\/09\/0n3a3704-1-300x73.jpg 300w, https:\/\/geomas.com\/wp-content\/uploads\/2025\/09\/0n3a3704-1-1024x249.jpg 1024w, https:\/\/geomas.com\/wp-content\/uploads\/2025\/09\/0n3a3704-1-768x187.jpg 768w, https:\/\/geomas.com\/wp-content\/uploads\/2025\/09\/0n3a3704-1-18x4.jpg 18w, https:\/\/geomas.com\/wp-content\/uploads\/2025\/09\/0n3a3704-1-650x158.jpg 650w\" sizes=\"(max-width: 1520px) 100vw, 1520px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-5a341ce6 e-flex e-con-boxed e-con e-parent\" data-id=\"5a341ce6\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-2ddcbf64 e-con-full e-flex e-con e-child\" data-id=\"2ddcbf64\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-726da61a elementor-widget elementor-widget-heading\" data-id=\"726da61a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">What Is a Geosynthetic Clay Liner (GCL)?<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-117d7c47 elementor-widget elementor-widget-text-editor\" data-id=\"117d7c47\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<div class=\"uk-width-1-2@m uk-margin-auto uk-text-center category-text\"><div class=\"uk-margin-remove-last-child\"><p>A geosynthetic clay liner (GCL) is a manufactured hydraulic barrier composed of a layer of sodium bentonite granules mechanically bonded between layers of high-strength geotextile. When hydrated, the bentonite swells to form a low-permeability barrier - delivering equal or better containment performance than a meter of compacted clay in a fraction of the thickness.<\/p><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-fce3d8c e-con-full e-flex e-con e-child\" data-id=\"fce3d8c\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-5d08784 elementor-widget elementor-widget-heading\" data-id=\"5d08784\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Why Is Geosynthetic Clay Preferred Over Traditional Clay?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c6b7900 elementor-widget elementor-widget-text-editor\" data-id=\"c6b7900\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Traditional compacted clay liners typically require 60\u2013100 cm of thickness to achieve adequate containment. A GCL achieves comparable - or superior - hydraulic performance in less than 1 cm, which translates directly into lower transport volume, faster installation, and reduced site time. GCLs are also more resistant to freeze-thaw and wet-dry cycling than compacted clay, and the bentonite's swelling behavior gives the material a degree of self-healing if punctured.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5e63657 elementor-widget elementor-widget-heading\" data-id=\"5e63657\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">The Geomas GCL Product Range<\/h2>\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-34cd248 e-con-full e-flex e-con e-child\" data-id=\"34cd248\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-486cb82 elementor-widget elementor-widget-text-editor\" data-id=\"486cb82\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<table style=\"width: 100%; border-collapse: collapse; font-family: Arial, sans-serif;\"><thead><tr style=\"background: #f4f4f4;\"><th style=\"border: 1px solid #ddd; padding: 12px; text-align: left;\">Product<\/th><th style=\"border: 1px solid #ddd; padding: 12px; text-align: left;\">Structure<\/th><th style=\"border: 1px solid #ddd; padding: 12px; text-align: left;\">Key Features<\/th><th style=\"border: 1px solid #ddd; padding: 12px; text-align: left;\">Typical Applications<\/th><\/tr><\/thead><tbody><tr><td style=\"border: 1px solid #ddd; padding: 12px;\"><strong>BentoShield<\/strong><\/td><td style=\"border: 1px solid #ddd; padding: 12px;\">A Geosynthetic Clay Liner (GCL) consisting of natural sodium bentonite needle-punched between two layers of geotextile.<\/td><td style=\"border: 1px solid #ddd; padding: 12px;\">Swells upon contact with water to create a self-sealing waterproof barrier. Provides reliable performance under standard groundwater conditions.<\/td><td style=\"border: 1px solid #ddd; padding: 12px;\">Raft foundations, retaining walls, basement structures, and foundation waterproofing systems.<\/td><\/tr><tr><td style=\"border: 1px solid #ddd; padding: 12px;\"><strong>BentoShield Max<\/strong><\/td><td style=\"border: 1px solid #ddd; padding: 12px;\">A Geosynthetic Clay Liner (GCL) incorporating polymer-enhanced sodium bentonite.<\/td><td style=\"border: 1px solid #ddd; padding: 12px;\">Offers superior chemical resistance and long-term waterproofing performance in saline or contaminated groundwater conditions.<\/td><td style=\"border: 1px solid #ddd; padding: 12px;\">Structures exposed to high groundwater levels, industrial facilities, infrastructure projects, and landfill applications.<\/td><\/tr><tr><td style=\"border: 1px solid #ddd; padding: 12px;\"><strong>BentoShield LM<\/strong><\/td><td style=\"border: 1px solid #ddd; padding: 12px;\">A composite GCL system combining polymer-modified bentonite with a laminated polyethylene (PE) membrane.<\/td><td style=\"border: 1px solid #ddd; padding: 12px;\">Combines the self-sealing capability of bentonite with the enhanced waterproofing and mechanical protection provided by the PE membrane. Delivers reliable performance under high hydrostatic pressure.<\/td><td style=\"border: 1px solid #ddd; padding: 12px;\">Metro and tunnel construction, deep basements, water-retaining structures, critical infrastructure projects, and structures exposed to high groundwater pressure.<\/td><\/tr><tr><td style=\"border: 1px solid #ddd; padding: 12px;\"><strong>BentoShield PE<\/strong><\/td><td style=\"border: 1px solid #ddd; padding: 12px;\">A composite GCL featuring a laminated polyethylene (PE) film bonded to one side of the bentonite liner.<\/td><td style=\"border: 1px solid #ddd; padding: 12px;\">Provides an additional waterproofing barrier, reduced permeability, and improved puncture resistance through the PE film.<\/td><td style=\"border: 1px solid #ddd; padding: 12px;\">Foundations, retaining walls, ground slabs, and underground structures where enhanced waterproofing performance is required.<\/td><\/tr><tr><td style=\"border: 1px solid #ddd; padding: 12px;\"><strong>Protex Polylock<\/strong><\/td><td style=\"border: 1px solid #ddd; padding: 12px;\">A high-density polyethylene (HDPE) mechanical anchoring profile designed to be cast into concrete. It does not contain bentonite.<\/td><td style=\"border: 1px solid #ddd; padding: 12px;\">Provides a secure mechanical connection between HDPE membranes and concrete, preventing water migration behind the membrane and ensuring reliable membrane termination.<\/td><td style=\"border: 1px solid #ddd; padding: 12px;\">HDPE membrane terminations, foundation-to-wall connections, construction joints, water tanks, tunnels, and other underground waterproofing applications.<\/td><\/tr><\/tbody><\/table><p>\u00a0<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-a0d3997 e-con-full e-flex e-con e-child\" data-id=\"a0d3997\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-b3bdde6 e-con-full e-flex e-con e-child\" data-id=\"b3bdde6\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d2ae01f elementor-position-top elementor-widget elementor-widget-image-box\" data-id=\"d2ae01f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image-box.default\">\n\t\t\t\t\t<div class=\"elementor-image-box-wrapper\"><figure class=\"elementor-image-box-img\"><a href=\"\/en\/products\/geosynthetic\/geosynthetic-clay-liner\/bentoshield\/\" tabindex=\"-1\"><img decoding=\"async\" width=\"360\" height=\"180\" src=\"https:\/\/geomas.com\/wp-content\/uploads\/2025\/09\/enka_103-1.jpg\" class=\"attachment-full size-full wp-image-746\" alt=\"EnkaD Geotube System\" srcset=\"https:\/\/geomas.com\/wp-content\/uploads\/2025\/09\/enka_103-1.jpg 360w, https:\/\/geomas.com\/wp-content\/uploads\/2025\/09\/enka_103-1-300x150.jpg 300w, https:\/\/geomas.com\/wp-content\/uploads\/2025\/09\/enka_103-1-18x9.jpg 18w\" sizes=\"(max-width: 360px) 100vw, 360px\" \/><\/a><\/figure><div class=\"elementor-image-box-content\"><h3 class=\"elementor-image-box-title\"><a href=\"\/en\/products\/geosynthetic\/geosynthetic-clay-liner\/bentoshield\/\">Bentoshield<\/a><\/h3><p class=\"elementor-image-box-description\">BentoShield's leak-proof technology uses sodium bentonite granules or bentonite...<\/p><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-cc994ce e-con-full e-flex e-con e-child\" data-id=\"cc994ce\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-fda0b74 elementor-position-top elementor-widget elementor-widget-image-box\" data-id=\"fda0b74\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image-box.default\">\n\t\t\t\t\t<div class=\"elementor-image-box-wrapper\"><figure class=\"elementor-image-box-img\"><a href=\"\/en\/products\/insulation\/bentoshield-max-series\/bentoshield-max\/\" tabindex=\"-1\"><img decoding=\"async\" width=\"870\" height=\"460\" src=\"https:\/\/geomas.com\/wp-content\/uploads\/2025\/10\/bentoshield-max-_870x460pe.jpg\" class=\"attachment-full size-full wp-image-1395\" alt=\"Bentoshield Max Geosynthetic Clay Liner (GCL)\" srcset=\"https:\/\/geomas.com\/wp-content\/uploads\/2025\/10\/bentoshield-max-_870x460pe.jpg 870w, https:\/\/geomas.com\/wp-content\/uploads\/2025\/10\/bentoshield-max-_870x460pe-300x159.jpg 300w, https:\/\/geomas.com\/wp-content\/uploads\/2025\/10\/bentoshield-max-_870x460pe-768x406.jpg 768w, https:\/\/geomas.com\/wp-content\/uploads\/2025\/10\/bentoshield-max-_870x460pe-18x10.jpg 18w, https:\/\/geomas.com\/wp-content\/uploads\/2025\/10\/bentoshield-max-_870x460pe-650x344.jpg 650w\" sizes=\"(max-width: 870px) 100vw, 870px\" \/><\/a><\/figure><div class=\"elementor-image-box-content\"><h3 class=\"elementor-image-box-title\"><a href=\"\/en\/products\/insulation\/bentoshield-max-series\/bentoshield-max\/\"> Bentoshield Max<\/a><\/h3><p class=\"elementor-image-box-description\">BentoShield's leak-proof technology uses sodium bentonite granules or bentonite...<\/p><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-bbe5cb0 e-con-full e-flex e-con e-child\" data-id=\"bbe5cb0\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-dacec4b elementor-position-top elementor-widget elementor-widget-image-box\" data-id=\"dacec4b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image-box.default\">\n\t\t\t\t\t<div class=\"elementor-image-box-wrapper\"><figure class=\"elementor-image-box-img\"><a href=\"\/en\/products\/insulation\/bentoshield-max-series\/bentoshield-lm\/\" tabindex=\"-1\"><img decoding=\"async\" width=\"870\" height=\"460\" src=\"https:\/\/geomas.com\/wp-content\/uploads\/2025\/09\/bentoshield-max-1-lm_870x460-1.jpg\" class=\"attachment-full size-full wp-image-1222\" alt=\"Bentoshield Max Geosynthetic Clay Liner (GCL)\" srcset=\"https:\/\/geomas.com\/wp-content\/uploads\/2025\/09\/bentoshield-max-1-lm_870x460-1.jpg 870w, https:\/\/geomas.com\/wp-content\/uploads\/2025\/09\/bentoshield-max-1-lm_870x460-1-300x159.jpg 300w, https:\/\/geomas.com\/wp-content\/uploads\/2025\/09\/bentoshield-max-1-lm_870x460-1-768x406.jpg 768w, https:\/\/geomas.com\/wp-content\/uploads\/2025\/09\/bentoshield-max-1-lm_870x460-1-18x10.jpg 18w, https:\/\/geomas.com\/wp-content\/uploads\/2025\/09\/bentoshield-max-1-lm_870x460-1-650x344.jpg 650w\" sizes=\"(max-width: 870px) 100vw, 870px\" \/><\/a><\/figure><div class=\"elementor-image-box-content\"><h3 class=\"elementor-image-box-title\"><a href=\"\/en\/products\/insulation\/bentoshield-max-series\/bentoshield-lm\/\"> Bentoshield LM<\/a><\/h3><p class=\"elementor-image-box-description\">TexhTex DC is manufactured by needle-punching 100% pure, high-strength polypropylene fibers.<\/p><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-9ff02d8 e-con-full e-flex e-con e-child\" data-id=\"9ff02d8\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2879c32 elementor-position-top elementor-widget elementor-widget-image-box\" data-id=\"2879c32\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image-box.default\">\n\t\t\t\t\t<div class=\"elementor-image-box-wrapper\"><figure class=\"elementor-image-box-img\"><a href=\"\/en\/products\/geosynthetic\/geosynthetic-clay-liner\/bentoshield-pe\/\" tabindex=\"-1\"><img decoding=\"async\" width=\"870\" height=\"460\" src=\"https:\/\/geomas.com\/wp-content\/uploads\/2025\/10\/bentoshield-max-_870x460pe.jpg\" class=\"attachment-full size-full wp-image-1395\" alt=\"Bentoshield Max Geosynthetic Clay Liner (GCL)\" srcset=\"https:\/\/geomas.com\/wp-content\/uploads\/2025\/10\/bentoshield-max-_870x460pe.jpg 870w, https:\/\/geomas.com\/wp-content\/uploads\/2025\/10\/bentoshield-max-_870x460pe-300x159.jpg 300w, https:\/\/geomas.com\/wp-content\/uploads\/2025\/10\/bentoshield-max-_870x460pe-768x406.jpg 768w, https:\/\/geomas.com\/wp-content\/uploads\/2025\/10\/bentoshield-max-_870x460pe-18x10.jpg 18w, https:\/\/geomas.com\/wp-content\/uploads\/2025\/10\/bentoshield-max-_870x460pe-650x344.jpg 650w\" sizes=\"(max-width: 870px) 100vw, 870px\" \/><\/a><\/figure><div class=\"elementor-image-box-content\"><h3 class=\"elementor-image-box-title\"><a href=\"\/en\/products\/geosynthetic\/geosynthetic-clay-liner\/bentoshield-pe\/\">Bentoshield TH<\/a><\/h3><p class=\"elementor-image-box-description\">BentoShield PE, polymer-modified sodium bentonite granules or bentonite...<\/p><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-4f54a0a e-con-full e-flex e-con e-child\" data-id=\"4f54a0a\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b50010c elementor-position-top elementor-widget elementor-widget-image-box\" data-id=\"b50010c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image-box.default\">\n\t\t\t\t\t<div class=\"elementor-image-box-wrapper\"><figure class=\"elementor-image-box-img\"><a href=\"\/en\/products\/geosynthetic\/geosynthetic-clay-liner\/protex-polylock\/\" tabindex=\"-1\"><img decoding=\"async\" width=\"360\" height=\"180\" src=\"https:\/\/geomas.com\/wp-content\/uploads\/2025\/09\/protex_360x180.jpg\" class=\"attachment-full size-full wp-image-745\" alt=\"Protex PolyLock Geosynthetic Clay Liner for Tunnel Waterproofing\" srcset=\"https:\/\/geomas.com\/wp-content\/uploads\/2025\/09\/protex_360x180.jpg 360w, https:\/\/geomas.com\/wp-content\/uploads\/2025\/09\/protex_360x180-300x150.jpg 300w, https:\/\/geomas.com\/wp-content\/uploads\/2025\/09\/protex_360x180-18x9.jpg 18w\" sizes=\"(max-width: 360px) 100vw, 360px\" \/><\/a><\/figure><div class=\"elementor-image-box-content\"><h3 class=\"elementor-image-box-title\"><a href=\"\/en\/products\/geosynthetic\/geosynthetic-clay-liner\/protex-polylock\/\">Protex PolyLock<\/a><\/h3><p class=\"elementor-image-box-description\">Protex PolyLock is a versatile, new generation waterproofing solution specially developed for tunnel insulation.<\/p><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-c6c6e6d e-flex e-con-boxed e-con e-parent\" data-id=\"c6c6e6d\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-85a1e30 e-con-full e-flex e-con e-child\" data-id=\"85a1e30\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-c65e2dd elementor-widget elementor-widget-heading\" data-id=\"c65e2dd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Factors to Consider When Selecting the Right GCL<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c1048a5 elementor-widget elementor-widget-text-editor\" data-id=\"c1048a5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>When selecting a Geosynthetic Clay Liner (GCL), it is important to evaluate not only the product cost but also the technical requirements of the project. Choosing the right GCL system ensures long-term waterproofing performance, durability, and reliability.<\/p><h3 class=\"PDq2pG_selectionAnchorContainer\" data-section-id=\"18lu249\" data-start=\"267\" data-end=\"296\">1. Groundwater Conditions<\/h3><p data-start=\"297\" data-end=\"502\">The groundwater level and chemical characteristics (such as salinity, sulfate, chloride, and other contaminants) should be evaluated. For projects exposed to aggressive or contaminated groundwater, polymer-enhanced GCL products should be considered for improved chemical resistance and long-term performance.<\/p><h3 data-section-id=\"q6kk21\" data-start=\"504\" data-end=\"533\">2. Hydrostatic Water Pressure<\/h3><p data-start=\"534\" data-end=\"753\">The expected hydrostatic pressure acting on the structure should be determined. For applications such as deep basements, tunnels, and water-retaining structures exposed to high water pressure, composite GCL systems with additional PE membrane layers may provide enhanced protection.<\/p><h3 data-section-id=\"o4jh5j\" data-start=\"755\" data-end=\"776\">3. Application Area<\/h3><p data-start=\"777\" data-end=\"979\">The intended application plays an important role in product selection. Different performance requirements may apply depending on whether the GCL is used for foundation waterproofing, retaining walls, tunnels, metro systems, landfills, ponds, or other below-grade structures.<\/p><h3 data-section-id=\"qiztqx\" data-start=\"981\" data-end=\"1018\">4. Soil and Substrate Conditions<\/h3><p data-start=\"1019\" data-end=\"1204\">The condition of the installation surface, including smoothness, bearing capacity, and potential settlement risks, should be assessed. The long-term performance of a GCL system depends greatly on proper substrate preparation and suitable site conditions.<\/p><h3 data-section-id=\"17691r4\" data-start=\"1206\" data-end=\"1243\">5. Mechanical Strength Requirements<\/h3><p data-start=\"1244\" data-end=\"1476\">Construction loads, equipment traffic, and backfilling conditions should be considered. In projects where there is a higher risk of puncture, tearing, or mechanical damage, GCL products with laminated membranes or enhanced mechanical properties may be preferred.<\/p><h3 data-section-id=\"vrha4n\" data-start=\"1478\" data-end=\"1520\">6. Project Standards and Specifications<\/h3><p data-start=\"1521\" data-end=\"1740\">The selected GCL product should comply with the project specifications, applicable standards, and technical requirements. Performance test results, certifications, and quality documentation should be reviewed during the product selection process.<\/p><h3 data-section-id=\"1qe9ora\" data-start=\"1742\" data-end=\"1776\">7. Installation and Detailing Requirements<\/h3><p data-start=\"1777\" data-end=\"1988\" data-is-last-node=\"\" data-is-only-node=\"\">The compatibility of the GCL system with other waterproofing components (such as HDPE membranes, waterstops, and Polylock profiles) should be evaluated. Proper detailing and installation methods are essential to maintain system integrity and achieve long-term waterproofing performance.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-b6c84b1 e-con-full e-flex e-con e-child\" data-id=\"b6c84b1\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-36c9d2e elementor-widget elementor-widget-heading\" data-id=\"36c9d2e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Frequently Asked Questions<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f94ccf6 elementor-widget elementor-widget-text-editor\" data-id=\"f94ccf6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h3 class=\"PDq2pG_selectionAnchorContainer\" data-start=\"131\" data-end=\"171\" data-section-id=\"xdqetn\">What is a Geosynthetic Clay Liner (GCL)?<\/h3><p data-start=\"172\" data-end=\"443\">A Geosynthetic Clay Liner (GCL) is a composite waterproofing material made by encapsulating natural sodium bentonite between two layers of geotextile. When exposed to water, the bentonite swells to form a low-permeability barrier that helps protect structures against water ingress.<\/p><h3 data-start=\"445\" data-end=\"487\" data-section-id=\"1bdvhw3\">How does a Geosynthetic Clay Liner work?<\/h3><p data-start=\"488\" data-end=\"770\">The sodium bentonite inside the GCL expands upon contact with water, filling voids and creating a highly impermeable layer. This swelling action also gives the material a self-sealing capability, allowing it to close small punctures and minor installation damage.<\/p><h3 data-start=\"772\" data-end=\"827\" data-section-id=\"1j5b622\">Where are Geosynthetic Clay Liners typically used?<\/h3><p data-start=\"828\" data-end=\"1028\">GCLs are widely used in raft foundations, retaining walls, basements, tunnels, metro systems, water reservoirs, landfills, ponds, and other below-grade structures requiring reliable waterproofing.<\/p><h3 data-start=\"1030\" data-end=\"1100\" data-section-id=\"1eiotho\">What are the advantages of a Geosynthetic Clay Liner compared to conventional waterproofing membranes?<\/h3><p data-start=\"1101\" data-end=\"1353\">GCLs offer self-sealing performance, excellent waterproofing capability, fast installation, and strong compatibility with concrete structures. Their natural bentonite core and minimal seam requirements make them a durable and cost-effective waterproofing solution for many applications.<\/p><h3 data-section-id=\"vcb1q6\" data-start=\"1355\" data-end=\"1436\">Can Geosynthetic Clay Liners be used in saline or contaminated groundwater?<\/h3><p data-start=\"1437\" data-end=\"1678\">Standard GCL products are suitable for normal groundwater conditions. For saline, chemically aggressive, or contaminated groundwater, polymer-enhanced GCL products, such as BentoShield Max, provide improved chemical resistance and long-term performance.<\/p><h3 data-section-id=\"vl4qo8\" data-start=\"1680\" data-end=\"1758\">What should be considered during Geosynthetic Clay Liner installation?<\/h3><p data-start=\"1759\" data-end=\"2045\" data-is-last-node=\"\" data-is-only-node=\"\">The substrate should be smooth and properly prepared before installation. GCL panels must be installed with the manufacturer's recommended overlaps, protected from prolonged exposure before backfilling, and covered promptly to prevent mechanical damage and maintain waterproofing performance.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Anasayfa Geosentetik Kil \u00d6rt\u00fc (GCL) Geosentetik kil \u00f6rt\u00fcler (GCL), y\u00fcksek mukavemetli geotekstil malzemelerin sodyum bentonit gran\u00fclleriyle mekanik olarak birle\u015ftirilmesiyle \u00fcretilen geokompozit su [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":77,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-57","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/geomas.com\/en\/wp-json\/wp\/v2\/pages\/57","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/geomas.com\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/geomas.com\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/geomas.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/geomas.com\/en\/wp-json\/wp\/v2\/comments?post=57"}],"version-history":[{"count":34,"href":"https:\/\/geomas.com\/en\/wp-json\/wp\/v2\/pages\/57\/revisions"}],"predecessor-version":[{"id":3797,"href":"https:\/\/geomas.com\/en\/wp-json\/wp\/v2\/pages\/57\/revisions\/3797"}],"up":[{"embeddable":true,"href":"https:\/\/geomas.com\/en\/wp-json\/wp\/v2\/pages\/77"}],"wp:attachment":[{"href":"https:\/\/geomas.com\/en\/wp-json\/wp\/v2\/media?parent=57"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}