Bentonite and Asphalt solution

Bentonite and Asphalt Solutions

Advanced sealing, drilling, and ground engineering technologies

Our Areas of Expertise

Bentonite and Asphalt solutions

Freja Chemical provides specialized solutions for sealing operations based on bentonite and asphalts unique properties. We designed optimal technology to improve sealing efficiency, ensure borehole stability, and optimize fluid performance in demanding conditions.

With extensive experience, Freja Chemical delivers reliable, high-quality systems that support safe, efficient, and environmentally responsible operations across a wide range of applications

Bentonite Solutions

High-Performance Sealing for Underground and Technical Applications

Bentonite Blocks from Freja Chemical

Bentonite blocks are engineered sealing elements designed for applications where controlled swelling, low permeability, and long-term stability are required. Once installed at the specified density, the blocks hydrate and expand, generating swelling pressure that seals voids, gaps, and cross-sections effectively

Composition and manufactoring technology

Bentonite blocks are produced by the method of semi-dry pressing of a mixture consisting of the following components:

finely dispersed bentonite powder
inert filler (e.g. quartz sand)
regulating additives (optional)

Bentonite blocks applications

The excellent waterproofing performance of the Bentonite blocks is used for:

01 Sealing systems in underground mining for:

shaft sealing
drift sealing

02 Civil engineering for:

sealing of underground structures / foundations
water-tight walls for sealing aquifers

03 Sealing systems for boreholes:

geothermal energy generation
oil and gas production
groundwater production and management
underground fluid storage (e.g. sealing of caverns and porous formations)
separation of groundwater levels
underground mining
peat mining

Technical data sheet

Property	Unit	Value*
Dimensions and max. deviations: – length – width – height – diameter	mm	e.g. 250 ± 1 e.g. 120 ± 1 e.g. 60 ± 1 e.g. 122 ± 1
Apparent density and max. deviations	kg/m³	2100 ± 100
Average compressive strength	MPa	8
Cubic index at free swelling in water, min.	-	1,5
Swelling pressure at dry density 1,85 g/cm³ (40°C)	MPa	1,85
Permeability at dry density 1,85 g/cm³ (40°C)	m² D	2,7* 10⁻¹⁹ 2,7E-* 10⁻⁷

* The nominal dimensions and parameters of the product can be changed at the request of the consumer

Key benefits of Bentonite blocks from Freja Chemical

Create an active swelling seal when exposed to water-based fluids

Reduce permeability and limit the movement of liquids and gases

Help stabilize underground structures and boreholes

Provide long-term sealing performance in demanding geological conditions

Support safe and environmentally responsible underground operations

Asphalt Solutions

Asphalt Blocks from Freja Chemical

Asphalt blocks provide effective sealing and protection by forming a dense, water-resistant barrier. Their flexibility allows them to accommodate movement and settlement, while maintaining sealing performance over time.

Freja Chemical produces asphalt blocks from bitumen. We specifically select bitumen for each application and combine it with inorganic additives to control density and flow ability of the product

Durable, Flexible, and Reliable Sealing Performance

Asphalt solutions from Freja Chemical

Our asphalt-based solutions are designed for applications requiring strong sealing capability, flexibility, and resistance to environmental and operational stresses.

Asphalt materials offer excellent waterproofing properties. Because of its rheological properties, asphalt can be processed as a solid while functioning as a viscous, flow able material

These properties make asphalt suitable for technical barriers and waterproofing systems in civil engineering, mining applications such as shafts, tunnels, and boreholes

Asphalt blocks applications

Our asphalt blocks can be applied in:

01 Civil engineering structures

02 Underground construction

03 Tunnels and shafts

04 Containment systems

05 Mining infrastructure

06 Waterproofing systems

07 Technical barrier systems

Technical data sheet

Property	Unit	Value*
Block size and max. deviations: – length – width – height	mm	400 ± 20 200 ± 20 200 ± 20
Apparent density and max. deviations	kg/m³	1440 ± 50
Penetration at 25 °С	1/10 mm	≥90
Temperature of full flowability	°С	8–20

* The nominal dimensions and parameters of the product can be changed at the request of the consumer

Key benefits of Asphalt blocks from Freja Chemical

Excellent waterproofing performance

High durability under demanding conditions

Resistance to water and many environmental influences

Flexible behavior under movement or settlement

Reliable long-term sealing capability

Appearance, packaging and transportation

The dimensions of the blocks are individually adjusted to the specific requirements of the application. The blocks are packaged, stored, and transported in cartons with a special non-stick coating. To ensure dimensional stability, the product is delivered on stabilized pallets

Partner with Freja Chemical

Reliable materials. Proven performance. Professional support

At Freja Chemical we understand that every project has unique technical requirements. That is why we focus on delivering high-quality materials, application-specific solutions, and professional technical support from concept to implementation.

Our experience in sealing systems allows us to support clients in selecting the right solution for their operational needs.

Tell us about your project and requirements and we will help you build safer, more efficient and more sustainable concept with our advanced material solutions

Our Areas of Expertise

Three specialized divisions. One standard of excellence

Each division operates with deep domain expertise and a shared commitment to quality