Description
Therm Ex grout is used for thermal resistant ground stabilization.
Its primary function is to provide an efficient heat exchange while also creating a low-permeability seal to protect groundwater supplies.
Product Details
- Manufacturer: Wyo-Ben, Inc., with distribution by companies like Di-Corp.
- Primary Use: Backfilling the annulus (space between the loop and the bore hole wall) of closed-loop geothermal systems to ensure optimal thermal transfer and environmental sealing.
- Material: Developed using high-swelling Wyoming Bentonite, mixed with fresh water and silica sand.
- Key Properties: Offers elevated thermal conductivity and low permeability (e.g., <2 x 10⁻⁸ cm/sec). It can be pumped at pressures over 300 psi.
Mixing and Handling
The material comes in 50-pound bags. Mixing involves combining fresh water, THERM-EX GROUT™, and silica sand in specific ratios for desired thermal conductivity. Add the grout to water first, mix, then add sand and agitate until uniform. Pump the mixture into place using a tremie line, starting from the bottom. Specific mixing ratios for different thermal conductivity values are provided in the product information.
Safety Precautions
THERM-EX GROUT™, in its dry powder form, contains crystalline silica and poses a health hazard if inhaled. Avoid dust, do not breathe dust, and use protective gear like gloves and eye/face protection. Ensure proper ventilation. Handle only after reading safety precautions.
- First Aid: For inhalation, move to fresh air. For eye contact, rinse with water and seek medical attention. For skin contact, wash with soap and water and remove contaminated clothing.
- Storage and Disposal: Store in a dry, ventilated area and dispose of according to regulations.
