Black Hills Bentonite  

 

 

 BH 20 GROUT
Bl ack Hills 20 Grout MSDS Sheet
Description A 20% solids, modified bentonite grout product which has been designed to be mixed with fresh water and pumped to it's destination.   BH 20 Grout requires no polymer additives and is a complete mineral based product.  This product is certified by the National Sanitation Foundation International to ANSI/NSF Standard 60, Drinking Water Treatment Chemicals - Health Effects.  BH 20 Grout meets all minimum state regulations for grouting materials.

Once placed, BH 20 Grout will set into a semi-rigid plug.  BH20 is also suitable for sealing well casings and decommissioning abandoned wells and Geothermal Heat Pump applicatruibs were thermal preformance is not an issue.

 
Physical Specifications
Thermal Conductivity 0.43 Btu/hr ft. °F
Permeability < 1 x 10^-7 cm./s
Percent Solids 23 %
Grout Weight 9.5 lb/gal
Linear Shrinkage Potential 49 %
Maximum Particle Size < 212 µm
Unit Yield 23.7 gal/50 lb unit
Packaging Information BH 20 Grout is packaged in 50 pound multi-walled polylined paper bags (one unit) and is shipped, stretch-wrapped on wooden pallets.  Each full pallet contains 54 bags.

 
Mixing Instructions 1. Place 23 gallons of fresh water (per 50 lb Unit) in a conventional paddle or jet mixing tank.

2. Start mixer and add one bag of BH 20 Grout.  Mix for about 1 minute.

3. Pump through a 1" or 1-1/4" inside diameter tremie pipe at a rate of 10 to 25 gallons per minute.

To obtain the following solids content, following instructions above substituting the gallons of fresh water as shown in this table below.

Solids Content Fresh Water Required Unit Yeild
25% 18.0 gallons 21.7 gal/50# Bag
24% 18.9 gallons 22.7 gal/50# Bag
23% 19.9 gallons 23.7 gal/50# Bag
22% 21.9 gallons 24.7 gal/50# Bag
21% 22.9 gallons 25.7 gal/50# Bag
20% 23.0 gallons 26.8 gal/50# Bag
19% 24.1 gallons 27.9 gal/50# Bag
18% 25.3 gallons 29.0 gal/50# Bag
Purchasing Information For additional information or to locate the area sales representative closest to you, contact:
Nominal Borehole Size (in) U-Bend Pipe Size* Nominal O.D. (in) Actual O.D. (in) Gal / Lin Ft. with Single U-Bend (2 pipes) Units 100' of Bore (@ 20% Solids)
4.50 3/4 1.050 0.7362 2.75
1 1.315 0.6851 2.56
1 1/4 1.660 0.6013 2.24
1 1/2 1.900 0.5316 1.98
4.75 3/4 1.050 0.8306 3.10
1 1.315 0.7794 2.91
1 1/4 1.660 0.6957 2.60
1 1/2 1.900 0.6260 2.34
5.00 3/4 1.050 0.9300 3.47
1 1.315 0.8789 3.28
1 1/4 1.660 0.7951 2.97
1 1/2 1.900 0.7254 2.71
5.25 3/4 1.050 1.0346 3.86
1 1.315 0.9834 3.67
1 1/4 1.660 0.8997 3.36
1 1/2 1.900 0.8300 3.10
5.50 3/4 1.050 1.1442 4.27
1 1.315 1.0931 4.08
1 1/4 1.660 1.0093 3.77
1 1/2 1.900 0.9396 3.51
5.75 3/4 1.050 1.2590 4.70
1 1.315 1.2078 4.51
1 1/4 1.660 1.1241 4.19
1 1/2 1.900 1.0544 3.93
6.00 3/4 1.050 1.3788 5.14
1 1.315 1.3277 4.95
1 1/4 1.660 1.2439 4.64
1 1/2 1.900 1.1742 4.38
Note (U-Bend Pipe Size*):   Pipe Sizes based on ASTM D-3035 and ASTM D-2447 (Polyethylene, IPS-OD)

How to Use this Table:

Example:  150 bores which are 250' deep with a 5.00" diameter and a 1" u-bend assembly installed.

  1. Find the bore diameter on the left side of the table (5.00").
  2. Next, find the "Nominal Pipe Size" in the next column (1").
  3. Looking across this row, you will find that these bores will require 0.8789 gallons of grout per lineal foot.
  4. Calculate the total units of BH 20 Grout required for each bore.  3.28 (from the far right column) x 2.5 (250' deep / 100) = 8.20 units per bore.
  5. Calculate the total units of BH 20 Grout required for the entire project.  8.20 (from step 4 above) x 150 (total number of bores) = 1,230 total units required.
  6. Calculate the number of pallets to order.  1,230 (from step 5 above) / 54 (units per pallet - see above) = 23 pallets of BH 20 Grout will need to be ordered
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