Geothermal heat pump grouting materials
Conference
·
OSTI ID:656602
The thermal conductivity of cementitious grouts has been investigated in order to determine suitability of these materials for grouting vertical boreholes used with geothermal heat pumps. The roles of mix variables such as water/cement ratio, sand/cement ratio and superplasticizer dosage were measured. The cement-sand grouts were also tested for rheological characteristics, bleeding, permeability, bond to HDPE pipe, shrinkage, coefficient of thermal expansion, exotherm, durability and environmental impact. This paper summarizes the thermal conductivity, permeability, bonding and exotherm data for selected cementitious grouts. The theoretical reduction in bore length that could be achieved with the BNL-developed cement-sand grouts is examined. Finally, the FY 98 research and field trials are discussed.
- Research Organization:
- Brookhaven National Lab., Upton, NY (United States)
- Sponsoring Organization:
- USDOE Assistant Secretary for Energy Efficiency and Renewable Energy, Washington, DC (United States)
- DOE Contract Number:
- AC02-98CH10886
- OSTI ID:
- 656602
- Report Number(s):
- BNL--65676; CONF-980441--; ON: DE98007303; BR: EB4001
- Country of Publication:
- United States
- Language:
- English
Similar Records
GEOTHERMAL HEAT PUMP GROUTING MATERIALS
Thermal conductivity and other properties of cementitious grouts
THERMAL CONDUCTIVITY AND OTHER PROPERTIES OF CEMENTITIOUS GROUTS
Conference
·
Tue Mar 31 23:00:00 EST 1998
·
OSTI ID:757124
Thermal conductivity and other properties of cementitious grouts
Technical Report
·
Sat Aug 01 00:00:00 EDT 1998
·
OSTI ID:656568
THERMAL CONDUCTIVITY AND OTHER PROPERTIES OF CEMENTITIOUS GROUTS
Conference
·
Fri May 01 00:00:00 EDT 1998
·
OSTI ID:757117