Sodium Bentonite Clay Powder

Product Title: Sodium Bentonite Clay Powder Civil Engineering Grade – Pond Sealer, Lake & Lagoon Liner, Drilling Mud & Pottery Clay

Product Overview:

Sodium Bentonite Clay Powder is a high-swelling civil engineering grade bentonite designed for pond sealing, landfill lining, drilling slurry, pottery and industrial applications. When hydrated, the clay expands up to 18 times its dry size, forming a durable impermeable gel barrier that helps reduce seepage and water loss in ponds, lakes and lagoons. Suitable for professional engineering and environmental projects.

Key Features:

1. Civil engineering grade sodium bentonite clay powder
2. Expands up to 18 times when hydrated for superior sealing
3. Creates a natural impermeable gel barrier against seepage
4. Suitable for ponds, lakes, lagoons, landfill liners and drilling slurry
5. Multi-purpose industrial clay for pottery, foundry and metallurgy use

Uses:

1. Pond and lake sealing to reduce water seepage
2. Landfill, lagoon and environmental containment liners
3. Well drilling slurry and borehole stabilisation
4. Pottery, ceramics and green sand casting applications
5. Binding agent for industrial and metallurgy processes

📋 Product Details:

Weight Options:
• 800g Jerry Can
• 2.5kg Bucket
• 5kg supplied as 2 × 2.5kg buckets

Grade: Civil Engineering Grade
Form: Fine powder
Appearance: Solid powder
Colour: Tan
Odour: Mild
Bulk Density: 800–900 kg/m³
CAS No: 1302-78-9
EC No: 215-288-5

Other Names: Sodium Bentonite, Montmorillonite, Aluminosilicate of Sodium

Recommended For:
Engineering projects, pond construction, lake sealing, drilling mud, ceramics, ecological construction and industrial applications.

Not Recommended For:
Cosmetic, food or pharmaceutical applications.

How Sodium Bentonite Works:

When mixed with water, bentonite clay absorbs moisture and swells dramatically. Water molecules enter between the clay layers, causing expansion and forming a thick impermeable gel. This process, known as thixotropy, allows the clay slurry to remain fluid during application before settling into a strong sealing barrier.

Application Rates for Pond & Lake Sealing:

• Clay soils: 5–7 kg per m²
• Sandy silt: 10–12 kg per m²
• Silty sand: 12–15 kg per m²
• Clean sand: 15–20 kg per m²
• Rock or gravel: 20–25 kg per m²

5 Popular Uses – Step-by-Step Instructions

1. Sealing Ponds & Lakes

1. Remove stones and debris from the pond base.
2. Spread bentonite evenly across dry soil at the required application rate.
3. Mix into the top 10–15cm of soil.
4. Compact thoroughly using rollers or hand tools.
5. Slowly add water to activate swelling and sealing.

2. Blanket Method for Pond Liners

1. Apply a layer of bentonite powder over the prepared ground.
2. Cover with soil or clay.
3. Compact firmly to lock the bentonite into place.
4. Hydrate gradually for maximum sealing performance.

3. Mixed Blanket Method

1. Blend bentonite thoroughly with dry soil or sand.
2. Spread evenly across the pond base.
3. Compact well using suitable equipment.
4. Add water slowly to form the impermeable barrier.

4. Drilling Slurry Preparation

1. Fill mixing tank with clean water.
2. Slowly add 25–50kg bentonite per 1,000 litres of water while mixing continuously.
3. Allow hydration before use.
4. Maintain agitation for consistent slurry performance.

5. Green Sand Casting

1. Mix 5–11% bentonite with foundry sand.
2. Add small amounts of water gradually.
3. Blend thoroughly until moulding consistency is achieved.
4. Use for aluminium and metal casting moulds.

Safety Information:

• Wear gloves, safety goggles and a dust mask during handling
• Avoid breathing dust particles
• Store sealed in a cool, dry location
• Keep away from children and animals
• Use only for industrial and engineering applications

📈 Other Names:

Bentonite Clay Powder, Sodium Bentonite Powder, Pond Sealer Clay, Pond Liner Bentonite, Bentonite for Lakes, Bentonite Pond Sealant, Civil Engineering Bentonite, Drilling Mud Bentonite, Pottery Bentonite Clay, Montmorillonite Clay, Lagoon Sealing Clay, Landfill Liner Bentonite, Industrial Bentonite Powder, Swelling Clay Powder, Waterproofing Bentonite Clay.

❓ FAQ

1. What is sodium bentonite used for?
Sodium bentonite is mainly used for pond sealing, landfill liners, drilling slurry, ceramics, green sand casting and industrial engineering applications.

2. How does bentonite seal ponds?
When hydrated, bentonite swells up to 18 times its dry size, creating an impermeable gel layer that reduces water seepage.

3. Is this product safe for fish and wildlife?
When properly applied in ponds and lakes, bentonite is considered environmentally safe and does not normally harm fish or wildlife.

4. Can this bentonite be used for skincare or cosmetics?
No. This is a civil engineering grade product and is not recommended for cosmetic or food use.

5. What is the best application method for pond sealing?
The Blanket Method is generally considered the most effective pond sealing technique for long-term seepage control.