CA2294429A1 - Admixture and method for optimizing addition of eo/po superplasticizer to concrete containing smectite clay-containing aggregates - Google Patents

Admixture and method for optimizing addition of eo/po superplasticizer to concrete containing smectite clay-containing aggregates Download PDF

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Publication number
CA2294429A1
CA2294429A1 CA002294429A CA2294429A CA2294429A1 CA 2294429 A1 CA2294429 A1 CA 2294429A1 CA 002294429 A CA002294429 A CA 002294429A CA 2294429 A CA2294429 A CA 2294429A CA 2294429 A1 CA2294429 A1 CA 2294429A1
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CA
Canada
Prior art keywords
clay
plasticizer
agent
water
cation
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
CA002294429A
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French (fr)
Other versions
CA2294429C (en
Inventor
Leslie A. Jardine
Hideo Koyata
Kevin J. Folliard
Chia-Chih Ou
Felek Jachimowicz
Byong-Wa Chun
Ara A. Jeknavorian
Christon L. Hill
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GCP Applied Technologies Inc
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Individual
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Publication of CA2294429A1 publication Critical patent/CA2294429A1/en
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Publication of CA2294429C publication Critical patent/CA2294429C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
    • C04B24/40—Compounds containing silicon, titanium or zirconium or other organo-metallic compounds; Organo-clays; Organo-inorganic complexes
    • C04B24/42—Organo-silicon compounds
    • C04B24/425—Organo-modified inorganic compounds, e.g. organo-clays
    • 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
    • C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
    • C04B24/12—Nitrogen containing compounds organic derivatives of hydrazine
    • 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
    • C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B14/02—Granular materials, e.g. microballoons
    • C04B14/04—Silica-rich materials; Silicates
    • C04B14/10—Clay
    • C04B14/104—Bentonite, e.g. montmorillonite
    • 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
    • C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B14/02—Granular materials, e.g. microballoons
    • C04B14/04—Silica-rich materials; Silicates
    • C04B14/10—Clay
    • C04B14/106—Kaolin
    • 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
    • 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
    • C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
    • C04B40/0028—Aspects relating to the mixing step of the mortar preparation
    • C04B40/0039—Premixtures of ingredients

Abstract

In the preparation of aqueous cement compositions containing a plasticizer, such as an EO/PO polymer-containing plasticizer, or EO/PO comb polymer-containing plasticizer, and further containing clay, such as a smectite clay, which expands when in contact with water, the step of providing an agent operative to modify the clay whereby the plasticizer absorbing capability of the clay is reduced. In exemplary methods of the invention, the plasticizer is an EO/PO (e.g., oxyalkylene) plasticizer and preferably an EO/PO comb polymer, and the clay-activity-modifiying agent may comprise an inorganic cation, an organic cation, a polar organic molecule capable of being absorbed by the clay, a clay dispersant (such as a polyphosphate), or a mixture thereof. For clay-activity-modifying agents which comprise a cation or a polar organic molecule, the agent is preferably added to the clay before water is introduced to the clay. For clay dispersant agents and some organic cations such as quaternary amines (which have a strong affinity for cationic exchange with the clay), the agent may be added before, during, or after water is introduced to the clay.
CA002294429A 1997-06-25 1998-06-19 Admixture and method for optimizing addition of eo/po superplasticizer to concrete containing smectite clay-containing aggregates Expired - Lifetime CA2294429C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US5069797P 1997-06-25 1997-06-25
US60/050,697 1997-06-25
PCT/US1998/012876 WO1998058887A1 (en) 1997-06-25 1998-06-19 Admixture and method for optimizing addition of eo/po superplasticizer to concrete containing smectite clay-containing aggregates

Publications (2)

Publication Number Publication Date
CA2294429A1 true CA2294429A1 (en) 1998-12-30
CA2294429C CA2294429C (en) 2003-12-09

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CA002294429A Expired - Lifetime CA2294429C (en) 1997-06-25 1998-06-19 Admixture and method for optimizing addition of eo/po superplasticizer to concrete containing smectite clay-containing aggregates

Country Status (15)

Country Link
US (2) US6352952B1 (en)
EP (2) EP1015398B1 (en)
JP (1) JP4491078B2 (en)
KR (1) KR100562920B1 (en)
CN (2) CN1098822C (en)
AU (1) AU731822B2 (en)
BR (1) BR9810323A (en)
CA (1) CA2294429C (en)
DE (1) DE69841672D1 (en)
ES (1) ES2344490T3 (en)
NZ (1) NZ502141A (en)
RU (1) RU2187479C2 (en)
TR (1) TR199903254T2 (en)
TW (1) TW387868B (en)
WO (1) WO1998058887A1 (en)

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BR9810323A (en) 2000-09-05
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CA2294429C (en) 2003-12-09
RU2187479C2 (en) 2002-08-20
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MX9911839A (en) 2000-04-30
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US6670415B2 (en) 2003-12-30
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