Sulfate and acid resistant concrete and mortar
Abstract
The present invention relates to concrete, mortar and other hardenable mixtures comprising cement and fly ash for use in construction and other applications, which hardenable mixtures demonstrate significant levels of acid and sulfate resistance while maintaining acceptable compressive strength properties. The acid and sulfate hardenable mixtures of the invention containing fly ash comprise cementitious materials and a fine aggregate. The cementitous materials may comprise fly ash as well as cement. The fine aggregate may comprise fly ash as well as sand. The total amount of fly ash in the hardenable mixture ranges from about 60% to about 120% of the total amount of cement, by weight, whether the fly ash is included as a cementious material, fine aggregate, or an additive, or any combination of the foregoing. In specific examples, mortar containing 50% fly ash and 50% cement in cementitious materials demonstrated superior properties of corrosion resistance.
- Inventors:
-
- Belle Mead, NJ
- Parsippany, NJ
- Bangkok, TH
- (late of Livingston, NJ)
- Issue Date:
- Research Org.:
- New Jersey Institute of Technology (Newark, NJ)
- OSTI Identifier:
- 871656
- Patent Number(s):
- 5772752
- Assignee:
- New Jersey Institute of Technology (Newark, NJ)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C04 - CEMENTS C04B - LIME, MAGNESIA
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02W - CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- DOE Contract Number:
- FG22-90PC90299
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- sulfate; acid; resistant; concrete; mortar; relates; hardenable; mixtures; comprising; cement; fly; ash; construction; applications; demonstrate; significant; levels; resistance; maintaining; acceptable; compressive; strength; properties; containing; comprise; cementitious; materials; fine; aggregate; cementitous; sand; total; amount; mixture; ranges; 60; 120; weight; included; cementious; material; additive; combination; foregoing; specific; examples; 50; demonstrated; superior; corrosion; mortar containing; comprising cement; cementitious material; mixtures comprising; hardenable mixture; specific examples; total amount; corrosion resistance; compressive strength; fly ash; containing fly; hardenable mixtures; specific example; acid resistant; cementitious materials; strength properties; /106/264/
Citation Formats
Liskowitz, John W, Wecharatana, Methi, Jaturapitakkul, Chai, and Cerkanowicz, deceased, Anthony E. Sulfate and acid resistant concrete and mortar. United States: N. p., 1998.
Web.
Liskowitz, John W, Wecharatana, Methi, Jaturapitakkul, Chai, & Cerkanowicz, deceased, Anthony E. Sulfate and acid resistant concrete and mortar. United States.
Liskowitz, John W, Wecharatana, Methi, Jaturapitakkul, Chai, and Cerkanowicz, deceased, Anthony E. Tue .
"Sulfate and acid resistant concrete and mortar". United States. https://www.osti.gov/servlets/purl/871656.
@article{osti_871656,
title = {Sulfate and acid resistant concrete and mortar},
author = {Liskowitz, John W and Wecharatana, Methi and Jaturapitakkul, Chai and Cerkanowicz, deceased, Anthony E.},
abstractNote = {The present invention relates to concrete, mortar and other hardenable mixtures comprising cement and fly ash for use in construction and other applications, which hardenable mixtures demonstrate significant levels of acid and sulfate resistance while maintaining acceptable compressive strength properties. The acid and sulfate hardenable mixtures of the invention containing fly ash comprise cementitious materials and a fine aggregate. The cementitous materials may comprise fly ash as well as cement. The fine aggregate may comprise fly ash as well as sand. The total amount of fly ash in the hardenable mixture ranges from about 60% to about 120% of the total amount of cement, by weight, whether the fly ash is included as a cementious material, fine aggregate, or an additive, or any combination of the foregoing. In specific examples, mortar containing 50% fly ash and 50% cement in cementitious materials demonstrated superior properties of corrosion resistance.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jun 30 00:00:00 EDT 1998},
month = {Tue Jun 30 00:00:00 EDT 1998}
}
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Works referenced in this record:
Fly Ashes Used For Blended Portland Cement: Effect Of Grinding on Cement Quality
journal, January 1988
- Stoltenberg-Hansson, Erik
- MRS Proceedings, Vol. 136
Hydration of fly ash-portland cements
journal, July 1984
- Jun-yuan, He; Scheetz, Barry E.; Roy, Della M.
- Cement and Concrete Research, Vol. 14, Issue 4
Effects of low calcium fly ash on sulfate resistance of OPC cement
journal, March 1989
- Irassar, Fabián; Batic, Oscar
- Cement and Concrete Research, Vol. 19, Issue 2
Optimized determination of PFA (fly ash) fineness with reference to pozzolanic activity
journal, July 1980
- Ravina, Dan
- Cement and Concrete Research, Vol. 10, Issue 4