Controlling the set of carbon-fiber embedded cement with electric current

Title: Controlling the set of carbon-fiber embedded cement with electric current

Abstract

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.

Inventors:: Mattus, Alfred J.

Issue Date:: 2004-06-15

Research Org.:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1174893

Patent Number(s):: 6749682

Application Number:: 10/134,171

Assignee:: UT-Battelle, LLC (Oak Ridge, TN)

Patent Classifications (CPCs):: C - CHEMISTRY C04 - CEMENTS C04B - LIME, MAGNESIA

C - CHEMISTRY C09 - DYES C09K - MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE

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C - CHEMISTRY C04 - CEMENTS C04B - LIME, MAGNESIA
C04B40/0658 - {Retarder inhibited mortars activated by the addition of accelerators or retarder-neutralising agents}

C - CHEMISTRY C09 - DYES C09K - MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
C09K8/42 - Compositions for cementing, e.g. for cementing casings into boreholes

C - CHEMISTRY C04 - CEMENTS C04B - LIME, MAGNESIA
C04B2103/0015 - {Noble metal or copper compounds}

C - CHEMISTRY C09 - DYES C09K - MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
C09K8/46 - containing inorganic binders, e.g. Portland cement

C - CHEMISTRY C04 - CEMENTS C04B - LIME, MAGNESIA
C04B28/02 - containing hydraulic cements other than calcium sulfates
C04B14/386 - {Carbon
C04B22/08 - Acids or salts thereof {
C04B40/0204 - {making use of electric or wave energy or particle radiation}
C04B22/062 - {of the alkali or alkaline-earth metals}
C04B2103/20 - Retarders

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DOE Contract Number:: AC05-00OR22725

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE

Citation Formats


                    Mattus, Alfred J. Controlling the set of carbon-fiber embedded cement with electric current.  United States: N. p., 2004. 
        Web.

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                    Mattus, Alfred J. Controlling the set of carbon-fiber embedded cement with electric current.  United States.

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                    Mattus, Alfred J. Tue .  
        "Controlling the set of carbon-fiber embedded cement with electric current".  United States.  https://www.osti.gov/servlets/purl/1174893.

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@article{osti_1174893,

  title        = {Controlling the set of carbon-fiber embedded cement with electric current},

  author       = {Mattus, Alfred J.},

  abstractNote = {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.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2004},

  month        = {6}

}

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Works referenced in this record:

Electrochemical Oxidation of Cyanide Complexes with Copper at Carbon Fibre
book, January 1996

Socha, A.; Kuśmierek, E.; Pawłowski, Lucjan
Chemistry for the Protection of the Environment 2, p. 283-293
https://doi.org/10.1007/978-1-4613-0405-0_31

Electrical conductivity of Portland cement mortars
journal, April 1996

Tumidajski, Peter J.
Cement and Concrete Research, Vol. 26, Issue 4
https://doi.org/10.1016/0008-8846(96)00027-0

Electrical percolation phenomena in cement composites containing conductive fibres
journal, August 1996

Xie, Ping; Gu, Ping; Beaudoin, J. J.
Journal of Materials Science, Vol. 31, Issue 15
https://doi.org/10.1007/BF00352673

Canadians Create Conductive Concrete
journal, May 1997

Holden, Constance
Science, Vol. 276, Issue 5316, p. 1201
https://doi.org/10.1126/science.276.5316.1201b

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Title: Controlling the set of carbon-fiber embedded cement with electric current

Abstract

Citation Formats

Electrochemical Oxidation of Cyanide Complexes with Copper at Carbon Fibre book, January 1996

Electrical conductivity of Portland cement mortars journal, April 1996

Electrical percolation phenomena in cement composites containing conductive fibres journal, August 1996

Canadians Create Conductive Concrete journal, May 1997

Electrochemical Oxidation of Cyanide Complexes with Copper at Carbon Fibre
book, January 1996

Electrical conductivity of Portland cement mortars
journal, April 1996

Electrical percolation phenomena in cement composites containing conductive fibres
journal, August 1996

Canadians Create Conductive Concrete
journal, May 1997