PowerTEC

 

PowerTEC

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Mix Details

Grouting Product
Thermal Enhancement Compound (TEC)
Cement Product Type II Portland Cement
Target Thermal Conductivity
Density
Percent Solids %
Percent Active Solids %
Permeability <1x10-7cm/s

Batch Recipe

bags
()bags
Cement Required () bags
Mix Water
Yield

Documents

PowerTEC

PowerTEC is an engineered graphite alternative to silica sand. It is specifically formulated for use with TG Lite or TG Select to achieve thermal conductivities ranging from 0.79 to 1.60.

PowerTEC is well suited for any thermally-enhanced grouting application and offers increased thermal conductivity ranges when compared to traditional silica sand recipes. It is field proven to be easier to handle, mix and pump while also reducing formation losses as well as costs for labor and freight.

Geothermal heat pump projects of any size can benefit from the decreased dry material requirements and improved handling characteristics of our PowerTEC mixes.

BENEFITS

When compared to silica sand, PowerTEC:

  • Extends the range of possible thermal conductivity values to 1.60.
  • Eliminates the need for silica sand on the jobsite.
  • Extends the life of grouting equipment due to low-viscosity & self-lubricating nature.
  • Reduces the amount of dry material required on the jobsite by 60% to 70% (depending on target thermal conductivity value), which reduces total freight costs and the amount of staging area needed.
  • Makes deeper bores possible by reducing total grout weight by 20% to 30% when compared to sand mixes.
  • Decreases formation losses in fractured and porous formations.
  • Is silica free, eliminating health concerns and OSHA safety compliance costs and requirements.
  • Complies with NSF/ANSI Standard 60 requirements for purity and suitability for contact with drinking water.

PowerTEC is packaged in 32lb bags with 66 bags per heat shrunk pallet. Properties and associated certifications are independently verified by a third party laboratory. Copies of independent test reports are available upon request.

Certifications and support apply only when PowerTEC is mixed with TG Lite or TG Select.

CG PLUS

CG Plus is a set of field-mixed grout recipes that consist of TG Lite or TG Select, PowerTEC and Type II Portland Cement. These recipes can be used to achieve thermal conductivity values up to 1.20 .

When mixed according to our specifications, CG Plus will provide an environmental seal, even in harsh saltwater environments. Resistance to degradation due to salt water intrusion makes CG Plus the preferred grouting choice in coastal regions. CG Plus can also be used where cementitious grouting products are required by local code.

BENEFITS

When mixed according to our specifications, CG Plus:

  • Does not flash hydrate.
  • Does not require thorough testing of mix water chemistry prior to use.
  • Does not require the use of polymers, soda ash or other chemicals for proper handling.
  • Provides salt water resistance for concentrations up to 35,000 ppm
  • Increases grout pH to 10 or higher for corrosion protection with copper-piping (direct-exchange applications).
  • Complies with IGSHPAs Closed-Loop Design and Installation Standards.
  • Provides an environmental seal with a measured permeability values less than 1x10-7 cm/s (tested according to ASTM D-5084).
  • Provides a wide range of thermal conductivity values to choose from (tested according to ASTM D-5334).
  • Complies with NSF/ANSI Standard 60 requirements for purity and suitability for contact with drinking water.

TG Lite and TG Select are packaged in 50lb bags with 54 bags per heat shrunk pallet. PowerTEC is packaged in 32lb bags with 66 bags per heat shrunk pallet. Portland Cement is not supplied by GeoPro but for the purposes of our recipes is assumed to be packed in 47lb bags.

Properties and associated certifications are independently verified by a third party laboratory. Copies of independent test reports are available upon request.

QUALITY ASSURANCE

Grout sample thermal conductivity testing is an important component of thermal grout commissioning and quality assurance efforts for every installation. GeoPro, Inc. provides free thermal conductivity testing for any customer who chooses to take advantage of the service.

For salt water resistance, CG Plus recipes require Type II Portland Cement. These recipes are specifically designed to work in saline environments and in applications where cementitious grouting products are required by local code. If your project does not match these criteria, please contact GeoPro before choosing a CG Plus grout recipe.