{"product_id":"geocompuesto-de-barrera-de-arcilla-gcl","title":"Geosynthetic Clay Liner (GCL)","description":"\u003cp\u003eLining sanitary landfill bases according to environmental standard ISO 14001, oxidation ponds and reservoirs with contractual auditing, where conventional HDPE geomembranes require neat welding and meter-by-meter pressure testing, demands a self-sealing sodium bentonite clay barrier geocomposite with self-protection capability. This clay barrier geocomposite (GCL) —also called \u003cstrong\u003egeosynthetic clay liner\u003c\/strong\u003e, bentonite geomattress or bentonite GCL— is manufactured by MOLTEXO with a sodium bentonite core between two layers of needle-punched geotextile, in rolls 5.8 m wide and 40 m long, designed for landfills, mining, chemical containment, and hydraulic works with environmental criteria.\u003c\/p\u003e\n\n\u003ch3\u003eKey benefits\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUltra-low permeability due to bentonite hydration:\u003c\/strong\u003e when moistened, sodium bentonite expands 10-15 times its dry volume, creating a monolithic layer with permeability lower than compacted site clay, a critical condition for landfills and leach pads with environmental auditing.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSelf-sealing capacity against perforations:\u003c\/strong\u003e if the barrier suffers a small perforation, the adjacent bentonite expands with the incoming water and automatically seals the breach, a differential advantage over HDPE geomembranes that require manual repair of each damage.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdaptation to ground irregularities:\u003c\/strong\u003e the flexible material adapts to curves, slopes, and irregular shapes without the need for cutting and welding, a differential condition compared to rigid geomembranes that require a flat prepared ground and complex welding for every change in geometry.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMechanical reinforcement with double geotextile:\u003c\/strong\u003e the upper and lower layers of needle-punched geotextile provide tensile and shear strength, protect the bentonite against perforation by stones, and ensure that the material withstands the thrust of the upper backfill for decades.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible with environmental criteria:\u003c\/strong\u003e sodium bentonite is a natural mineral without synthetic chemical compounds, an appropriate condition for projects with environmental auditing that require materials with low impact.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTypical applications and uses\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eLining of bases in sanitary landfills and backfill cells compliant with ISO 14001 or equivalent.\u003c\/li\u003e\n  \u003cli\u003eOxidation ponds, wastewater treatment plants, and industrial reservoirs requiring watertightness.\u003c\/li\u003e\n  \u003cli\u003eLeach pads in mining and containment of chemical solutions in industrial projects.\u003c\/li\u003e\n  \u003cli\u003eArtificial lakes, agricultural reservoirs, and landscaping works with water bodies requiring waterproofing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eQuality and durability\u003c\/h3\u003e\n\u003cp\u003eAn economical GCL fails in two areas: the bentonite is calcium-based or of low mineral quality (resulting in significantly less expansion than quality sodium bentonite and much higher permeability than declared), and the confining geotextiles are sparse (leading to granule migration and areas lacking bentonite). MOLTEXO works with controlled-origin sodium bentonite and calibrated-weight geotextiles, which distinguishes an auditable environmental GCL from a generic geomattress that does not meet declared permeability.\u003c\/p\u003e\n\n\u003cdiv style=\"background-color: #F3F6F3; padding: clamp(14px, 4vw, 18px); margin-top: 20px; font-size: 0.9em; color: #555555; border-radius: 8px;\"\u003e\n  \u003cstrong style=\"color: #006902;\"\u003eAlso known as:\u003c\/strong\u003e\n  \u003cstrong\u003eTechnical:\u003c\/strong\u003e geosynthetic clay liner, GCL, bentonite geocomposite, bentonite geomattress, sodium bentonite GCL.\n  \u003cstrong\u003eIn DR and Caribbean:\u003c\/strong\u003e GCL, geocompuesto bentonítico, manta bentonítica, geocolchón arcilloso.\n  \u003cstrong\u003eIn other countries:\u003c\/strong\u003e GCL (USA), geosynthetic clay liner (USA), bentonite mat (USA), bentonite GCL (LATAM), geosynthétique bentonitique (FR), bentonite lining (LATAM, ES).\n\u003c\/div\u003e","brand":"MOLTEXO","offers":[{"title":"Roll 5.8 m (19 ft) wide and 40 m (131 ft) long","offer_id":52616673526088,"sku":"537587","price":267000.0,"currency_code":"DOP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0916\/9751\/2776\/files\/barrera-arcilla-geosintetica-gcl-rollo.png?v=1773058684","url":"https:\/\/dodom.com\/en\/products\/geosynthetic-clay-liner-gcl","provider":"Dodom","version":"1.0","type":"link"}