Controlling the set of carbon-fiber embedded cement with electric current
A method for promoting cement or concrete set on demand for concrete that has been chemically retarded by adding carbon fiber to the concrete, which enables it to become electrically conductive, sodium tartrate retardant, and copper sulfate which forms a copper tartrate complex in alkaline concrete mixes. Using electricity, the concrete mix anodically converts the retarding tartrate to an insoluble polyester polymer. The carbon fibers act as a continuous anode surface with a counter electrode wire embedded in the mix. Upon energizing, the retarding effect of tartrate is defeated by formation of the polyester polymer through condensation esterification thereby allowing the normal set to proceed unimpeded.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-00OR22725
- Assignee:
- UT-Battelle, LLC (Oak Ridge, TN)
- Patent Number(s):
- 6,749,682
- Application Number:
- 10/134,171
- OSTI ID:
- 1174893
- Country of Publication:
- United States
- Language:
- English
Electrochemical Oxidation of Cyanide Complexes with Copper at Carbon Fibre
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book | January 1996 |
Electrical conductivity of Portland cement mortars
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journal | April 1996 |
Electrical percolation phenomena in cement composites containing conductive fibres
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journal | August 1996 |
Canadians Create Conductive Concrete
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journal | May 1997 |
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