CA2229491A1 - Blended hydraulic cement - Google Patents

Blended hydraulic cement

Info

Publication number
CA2229491A1
CA2229491A1 CA002229491A CA2229491A CA2229491A1 CA 2229491 A1 CA2229491 A1 CA 2229491A1 CA 002229491 A CA002229491 A CA 002229491A CA 2229491 A CA2229491 A CA 2229491A CA 2229491 A1 CA2229491 A1 CA 2229491A1
Authority
CA
Canada
Prior art keywords
fly ash
hydraulic cement
subbituminous
blended hydraulic
citric acid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002229491A
Other languages
French (fr)
Other versions
CA2229491C (en
Inventor
Robert William Styron
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mineral Resource Technologies Inc
Original Assignee
Mineral Resource Technologies Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mineral Resource Technologies Inc filed Critical Mineral Resource Technologies Inc
Publication of CA2229491A1 publication Critical patent/CA2229491A1/en
Application granted granted Critical
Publication of CA2229491C publication Critical patent/CA2229491C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • C04B28/021—Ash cements, e.g. fly ash cements ; Cements based on incineration residues, e.g. alkali-activated slags from waste incineration ; Kiln dust cements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S106/00—Compositions: coating or plastic
    • Y10S106/01—Fly ash
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S264/00—Plastic and nonmetallic article shaping or treating: processes
    • Y10S264/49—Processes of using fly ash

Abstract

The present invention is directed to blended hydraulic cement compositions which are formed with subbituminous fly ash. In one embodiment, the cement composition comprises from about 0.1 wt. % to about 7 wt. % of a retarding agent; from about 0.1 wt. % to about 4 wt. % potassium carbonate; from about 0.1 wt. % to about 4 wt. % citric acid; from about 0.1 wt. % to about 5 wt. %
lithium carbonate; and from about 85 wt. % to about 99.7 wt. % of a subbituminous fly ash. In another embodiment, the cement composition comprises from about 0.1 wt. % to about 7 wt % of a retarding agent; from about 0.1 wt. % to about 6 wt. % of an alkali source selected from the group consisting of potassium carbonate, potassium hydroxide and blends thereof;
from about 0.1 wt. % to about 4 wt. % citric acid; from about 0.1 wt. % to about 5 wt. % lithium carbonate; from about 25 wt. % to about 91.7 wt. % of a first subbituminous fly ash having a lime content; and from about 8 wt. % to about 60 wt. % of a second fly ash selected from the group consisting of lignitefly ash, bituminous fly ash and scrubber material.
CA 2229491 1997-02-12 1998-02-11 Blended hydraulic cement Expired - Fee Related CA2229491C (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US08/798,711 1997-02-12
US08/798,711 US5714003A (en) 1997-02-12 1997-02-12 Blended hydraulic cement
US09/016,605 US5997632A (en) 1997-02-12 1998-01-30 Blended hydraulic cement
US09/916,605 2001-07-27

Publications (2)

Publication Number Publication Date
CA2229491A1 true CA2229491A1 (en) 1998-08-12
CA2229491C CA2229491C (en) 2003-08-26

Family

ID=26688830

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2229491 Expired - Fee Related CA2229491C (en) 1997-02-12 1998-02-11 Blended hydraulic cement

Country Status (4)

Country Link
US (2) US5714003A (en)
EP (1) EP0858978B1 (en)
CA (1) CA2229491C (en)
DK (1) DK0858978T3 (en)

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US7914914B2 (en) * 2007-06-30 2011-03-29 Serious Materials, Inc. Low embodied energy sheathing panels with optimal water vapor permeance and methods of making same
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Also Published As

Publication number Publication date
CA2229491C (en) 2003-08-26
US5997632A (en) 1999-12-07
DK0858978T3 (en) 2005-03-07
EP0858978B1 (en) 2005-01-26
US5714003A (en) 1998-02-03
EP0858978A3 (en) 1999-06-16
EP0858978A2 (en) 1998-08-19

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