Thermal Grout Select

Black Hills Thermal Grout Select MSDS Sheet
Description Thermal Grout Select is a uniquebentonite-based two-part, field mixed, high to extreme-high solids grouting material that can mixed to meet a range of thermal conductivity's from 1.00 to 1.20 Btu/hr ft °F. It has been specifically developed for closed-loop ground-coupled heat pump applications where thermal conductivity in the vertical bore column is critical to system performance. This product is certified by the National Sanitation Foundation International to ANSI/NSF Satndard 60, Drinking Water Treatment Chemicals - Health Effects. Thermal Grout Select contains no chwmical polymers or organic matter.

Thermal Grout Select provides unequaled performance while offering the contractor proven advantages in handling and clean-up. When properly mixed, more than 30 minutes of working time is available before significant hydration occurs. Unlike many other bentonite grouting materials, Thermal Grout Select does not flash hydrate.

It's percentage of solids will range from equivalent, to over 2.5 times greater than that of the best conventional bentonite grout products. As the solids percentage becimes higher, Thermal Grout Select will reequire less water per delivered gallon of yield than other grout as well as a linear shrinkage potential which becomes less and less.
Physical Specifications
Thermal Conductivity 1.00 - 1.20 Btu/hr ft. °F
Permeability1 < 6.9 x 10-8 cm/s
Percent Solids 65.1 - 70.4 %
Grout Weight 13.3 - 14.4 lb/gal
Linear Shrinkage Potential 40 -<3 %
Maximum Particle Size < 300 µm
Unit Yield 34.7 - 44.5 gal/unit
NOTE 1: Permeability verified by an indepent testing laboratory over a variety of thermal conductivities.