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Title: GEOTHERMAL HEAT PUMP GROUTING MATERIALS

Abstract

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.

Authors:
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
DOE/GT (US)
OSTI Identifier:
757124
Report Number(s):
BNL-65676; EB4001
R&D Project: AS017EECD; EB4001; TRN: AH200034%%264
DOE Contract Number:  
AC02-98CH10886
Resource Type:
Conference
Resource Relation:
Conference: DOE REVIEW SIXTEEN (U.S. DEPARTMENT OF ENERGY), BERKELEY, CA (US), 04/01/1998--04/02/1998; Other Information: PBD: 1 Apr 1998
Country of Publication:
United States
Language:
English
Subject:
15 GEOTHERMAL ENERGY; 36 MATERIALS SCIENCE; BOREHOLES; GROUTING; SEALING MATERIALS; PERMEABILITY; SHRINKAGE; THERMAL CONDUCTIVITY; THERMAL EXPANSION; GROUND SOURCE HEAT PUMPS; CEMENTS; Geothermal Legacy

Citation Formats

ALLAN, M. GEOTHERMAL HEAT PUMP GROUTING MATERIALS. United States: N. p., 1998. Web.
ALLAN, M. GEOTHERMAL HEAT PUMP GROUTING MATERIALS. United States.
ALLAN, M. 1998. "GEOTHERMAL HEAT PUMP GROUTING MATERIALS". United States. https://www.osti.gov/servlets/purl/757124.
@article{osti_757124,
title = {GEOTHERMAL HEAT PUMP GROUTING MATERIALS},
author = {ALLAN, M},
abstractNote = {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.},
doi = {},
url = {https://www.osti.gov/biblio/757124}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1998},
month = {4}
}

Conference:
Other availability
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