Product Overview
GCL (Geosynthetic Clay Liner) Grade Bentonite is a highly specialized material used in factory-manufactured hydraulic barriers. Unlike the loose powder used in drilling or the granules used for pond repairs, GCL bentonite is typically "sandwiched" between two layers of geotextiles (fabrics) to create a waterproof "mat."
Key characteristics of our GCL Grade Bentonite:
- Extremely high sodium montmorillonite content
- Factory-manufactured for consistent quality
- Delivered in convenient roll format
- Self-healing properties
When confined between geotextiles and hydrated, it creates a barrier with incredibly low permeability (typically as low as 1 × 10⁻⁹ cm/sec), making it far more effective than traditional compacted clay liners.
Ultra-Low Permeability
10⁻⁹ cm/sec barrier
Self-Healing
Seals punctures automatically
Space Efficient
10mm = 600-900mm clay
All-Weather Install
Works in any condition
Benefits of GCL Grade Bentonite
GCL grade bentonite is specifically engineered for factory-manufactured hydraulic barriers. Its exceptional properties make it the industry standard for environmental containment and waterproofing projects.
Here are the primary benefits of using GCL grade bentonite:
1. Superior Hydraulic Barrier
GCL grade bentonite is selected for its extremely high sodium montmorillonite content. When this material is confined between geotextiles and hydrated:
The Benefit: It creates a barrier with incredibly low permeability (typically as low as 1 × 10⁻⁹ cm/sec). This makes it far more effective at stopping water and hazardous chemicals than a much thicker layer of traditional compacted clay.
2. "Self-Healing" Properties
One of the biggest benefits of GCL grade bentonite is its ability to protect against accidental damage.
The Benefit: If the liner is punctured by a stone or a small tool during installation, the bentonite within the "sandwich" swells as it hydrates, physically flowing into and sealing the hole. This ensures the integrity of the containment system even after minor mechanical injury.
3. All-Weather Installation
Traditional clay liners (CCLs) are very difficult to install in rainy or freezing conditions because they require precise moisture levels for compaction.
The Benefit: GCLs are manufactured in controlled factory settings and delivered in rolls. They can be installed quickly in almost any weather condition, significantly reducing labor costs and project timelines.
4. Space and Volume Efficiency
A single 10 mm layer of GCL can provide the same hydraulic protection as 600 mm to 900 mm of compacted natural clay.
The Benefit: This "volume advantage" allows for more storage space in landfills and reservoirs, directly increasing the project's return on investment.
5. Environmental Protection
GCL grade bentonite is the gold standard for environmental "containment" projects:
Landfills: It prevents toxic "leachate" (liquid waste) from seeping into the groundwater.
Mining: It is used to line tailings ponds to keep heavy metals and processing chemicals contained.
Roadways: It is installed under highways in "sensitive water zones" to prevent oil or chemical spills from reaching local aquifers.
Technical Specifications
For detailed specifications and technical data sheets:
Request Specifications
