skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Thermal conductivity and other properties of cementitious grouts

Abstract

The thermal conductivity and other properties cementitious grouts have 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. In addition to thermal conductivity, the cementitious grouts were also tested for bleeding, permeability, bond to HDPE pipe, shrinkage, coefficient of thermal expansion, exotherm, durability and environmental impact. This paper summarizes the results for selected grout mixes. Relatively high thermal conductivities were obtained and this leads to reduction in predicted bore length and installation costs. Improvements in shrinkage resistance and bonding were achieved.

Authors:
Publication Date:
Research Org.:
Brookhaven National Lab., Dept. of Applied Science, Upton, NY (United States)
Sponsoring Org.:
USDOE Assistant Secretary for Energy Efficiency and Renewable Energy, Washington, DC (United States)
OSTI Identifier:
656568
Report Number(s):
BNL-65640
ON: DE98006069; TRN: AHC29817%%124
DOE Contract Number:  
AC02-98CH10886
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: [1998]
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 15 GEOTHERMAL ENERGY; GROUND SOURCE HEAT PUMPS; GEOTHERMAL SPACE HEATING; SEALING MATERIALS; THERMAL CONDUCTIVITY; CEMENTS; GEOTHERMAL WELLS; LEACHING; PERMEABILITY; ADHESION; SHRINKAGE; THERMAL EXPANSION; ENVIRONMENTAL IMPACTS; Geothermal Legacy

Citation Formats

Allan, M. Thermal conductivity and other properties of cementitious grouts. United States: N. p., 1998. Web. doi:10.2172/656568.
Allan, M. Thermal conductivity and other properties of cementitious grouts. United States. https://doi.org/10.2172/656568
Allan, M. 1998. "Thermal conductivity and other properties of cementitious grouts". United States. https://doi.org/10.2172/656568. https://www.osti.gov/servlets/purl/656568.
@article{osti_656568,
title = {Thermal conductivity and other properties of cementitious grouts},
author = {Allan, M},
abstractNote = {The thermal conductivity and other properties cementitious grouts have 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. In addition to thermal conductivity, the cementitious grouts were also tested for bleeding, permeability, bond to HDPE pipe, shrinkage, coefficient of thermal expansion, exotherm, durability and environmental impact. This paper summarizes the results for selected grout mixes. Relatively high thermal conductivities were obtained and this leads to reduction in predicted bore length and installation costs. Improvements in shrinkage resistance and bonding were achieved.},
doi = {10.2172/656568},
url = {https://www.osti.gov/biblio/656568}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1998},
month = {8}
}