Treated ceramic microsphere-cement lightweight composites for geothermal cementing systems [electronic resource].
- Published
- Upton, N.Y. : Brookhaven National Laboratory, 1987.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy. - Physical Description
- Pages: 16 : digital, PDF file
- Additional Creators
- Brookhaven National Laboratory and United States. Department of Energy. Office of Scientific and Technical Information
Access Online
- Restrictions on Access
- Free-to-read Unrestricted online access
- Summary
- The compressive strength and water permeability of high-temperature light-weight cementing materials containing sillimanite-based hollow microspheres as a filler can be improved by treating the surfaces of the microspheres with a Ca(OH)/sub 2/-saturated solution at temperatures up to 200/sup 0/C. The precipitation of an epitaxial layer formed by an interaction between a hot calcium hydroxide solution and the surface of the sphere plays an essential role in developing favorable bonding characteristics at the interfaces and in promoting the hydration of the cement matrix. The properties of the composites include a slurry density of <1.2 g/cc at 25/sup 0/C, a 300/sup 0/C-24 hour compressive strength of >1015 psi (7.0 MPa), a water permeability of <10/sup -4/ Darcy, and a bulk density of <1.0 g/cc. It was observed that tobermorite-truscottite transformation and anorthite formation during autoclave exposure for 180 days in brine at 300/sup 0/C results in slight strength reductions and increased water permeability.
- Report Numbers
- E 1.99:bnl-40177
E 1.99: conf-871024-20
conf-871024-20
bnl-40177 - Subject(s)
- Other Subject(s)
- Cements
- Compression Strength
- Permeability
- Geothermal Wells
- Aluminium Silicates
- Calcium Hydroxides
- Density
- High Temperature
- Hydration
- Microspheres
- Surfaces
- Alkaline Earth Metal Compounds
- Aluminium Compounds
- Building Materials
- Calcium Compounds
- Hydrogen Compounds
- Hydroxides
- Materials
- Mechanical Properties
- Oxygen Compounds
- Physical Properties
- Silicates
- Silicon Compounds
- Solvation
- Wells
- Geothermal Legacy
- Note
- Published through SciTech Connect.
08/01/1987.
"bnl-40177"
" conf-871024-20"
"DE87014916"
Annual meeting of the Geothermal Resources Council, Sparks, NV, USA, 12 Oct 1987.
Kukacka, L.E.; Sugama, Toshifumi. - Funding Information
- AC02-76CH00016
View MARC record | catkey: 14385495