Description:

Bentonite pellets are made from natural, organic free, high-swelling bentonite, they are designed for use in the groundwater monitoring industry to form a chemically resilient, highly impermeable and flexible seal. Bentonite pellets isolate screened intervals of monitoring wells and provide an excellent seal for abandoned boreholes.

Functions:      

• Easy to use
• Provide a highly impermeable well seal
• Does not shrink or crack
• Easy to pour to depth
• Uniform size helps prevent bridging
• Chemically stable.
• Self-sealing; remain flexible when saturated and will rehydrate.

Typical Properties:

Permeability range                   
Free Swelling Volume               
Contained Swelling Volume
Settling Velocity            
Swelling Onset                         
Pellet Diameter                        
Pellet Length                             
Bulk Density                           
Specific Gravity                        
Colour                                     

1 x 10-7 to 1 x 10-9 cm/sec.
> 500% (after 48 hrs)
> 40%   (after 48 hrs)
40 (cm / sec)
15 (minutes)
8 mm
5 -15 mm
1.05 -1.10 g / ml
2.2 – 2.5   g / ml
Light Grey

Typical Chemical Analysis

Composition (By XRD Analysis)

SiO2 

65.3 %

Montmorillonite Clay          

Major  (ca. 60 % )

Al2O3

11.7

Calcite

Some

Fe2O3

6.36

Feldspar

Minor

TiO2

0.63

Alpha Quartz                  

Minor

CaO

1.01

MgO

3.35

K2O  

1.70

Na2O

4.90

Loss On Ignition            

5.7

H2O

14 –18%

Recommended            For shallow applications, pour Pure-Seal™ bentonite pellets slowly and steadily to
Treatment:

For shallow applications, pour bentonite pellets slowly and steadily to prevent blocking
and bridging.
For deep applications, bentonite pellets may be tremied into place – add bentonite pellets to the tremie pipe and quickly chase with water or air to deliver the pellets quickly and accurately to the desired depth.

Packaging:

Bentonite Pellets are packaged in 25Kg plastic bags (60 x 25Kg bags per shrink wrapped pallet).