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WO2006011690A1 - Produit de ciment ameliore - Google Patents

Produit de ciment ameliore Download PDF

Info

Publication number
WO2006011690A1
WO2006011690A1 PCT/KE2005/000013 KE2005000013W WO2006011690A1 WO 2006011690 A1 WO2006011690 A1 WO 2006011690A1 KE 2005000013 W KE2005000013 W KE 2005000013W WO 2006011690 A1 WO2006011690 A1 WO 2006011690A1
Authority
WO
WIPO (PCT)
Prior art keywords
cement composition
weight
cement
raw material
range
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.)
Ceased
Application number
PCT/KE2005/000013
Other languages
English (en)
Inventor
A. Shariff Mehboob
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.)
REGIONAL MINING Ltd
Original Assignee
REGIONAL MINING Ltd
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 REGIONAL MINING Ltd filed Critical REGIONAL MINING Ltd
Publication of WO2006011690A1 publication Critical patent/WO2006011690A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • C04B28/14—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 calcium sulfate cements
    • 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
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/20—Resistance against chemical, physical or biological attack
    • C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
    • C04B2111/285—Intumescent materials
    • 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
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/52—Sound-insulating materials

Definitions

  • Differential thermal analysis curves of vermiculite generally show three principal endothermic peaks, corresponding to the expulsion of inter-layer water and a further two peaks due to the disruption of the structure by loss of hydroxyl ions.
  • the above results of exfoliation can also be achieved by treating the mineral with hydrogen peroxide.
  • the cement when the mineral is combined with Portland cement in specific volumetric ratios, the cement can acquire Fire resistance, Light weightedness, Insulation capabilities and Sound deadening attributes.
  • This type of cement tends to have two main constituent. These are
  • This type of cement tends to have three main constituent. These are
  • the magnesium-oxide level was detected to be higher than the standard of 5%. Normally any value above the standard, should cause an expansivity of 10mm in a bath of water at 100 0 C for a period of 1 hr, but despite volume of magnesium being above 5% standard, the vermicuiite cement exhibited no significant expansivity (if any, it was within the stipulated standard of below 10mm). As shown in Table C (see appendix), we draw to the tentative conclusion that the magnesium did not participate in any reaction.
  • vermiculite or mica was the main cause of resistance in the cement to higher temperatures affecting the structure since it was the only additive used in the test. Hence the attribute of fire resistance was proved.
  • the mineral has a refractive index of 1.6, giving the final product a pearly lustre and goldish brown hue, instead of a dull grayish coloration consistent with all Portland cement.
  • a Block of 9 inch width mortars were made, one control and two with
  • the golden colour was generally visible in the cement constituting

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

L'invention concerne des mélanges consistant en des matériaux ajoutés à du ciment durant sa fabrication; par exemple, du gypse, utilisé en tant que retardateur, des fumées de silice et de la cendre de combustible pulvérisée sont ajoutées en quantité significative supérieure à 10 % de la teneur en ciment. Aujourd'hui, dans la plupart des pays industrialisés, l'usage du mélange représente 50 % du béton. En outre, l'additif utilisé dans des proportions établies donne au ciment divers attributs: (1) une propriété ignifuge, (2) une propriété d'atténuation sonore, (3) une propriété isolante, (4) une propriété polychrome, et (5) la non-toxicité.
PCT/KE2005/000013 2004-07-27 2005-06-14 Produit de ciment ameliore Ceased WO2006011690A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KE42204 2004-07-27
KEKE/P/04/00422 2004-07-27

Publications (1)

Publication Number Publication Date
WO2006011690A1 true WO2006011690A1 (fr) 2006-02-02

Family

ID=35786411

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KE2005/000013 Ceased WO2006011690A1 (fr) 2004-07-27 2005-06-14 Produit de ciment ameliore

Country Status (1)

Country Link
WO (1) WO2006011690A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6309740B1 (en) * 1999-07-20 2001-10-30 W. R. Grace & Co.-Conn. High temperature heat transfer barrier and vapor barrier and methods
AU752467B2 (en) * 1996-04-26 2002-09-19 Building Technologies Australia Pty Limited Improved lightweight prefabricated construction element
RU2197450C1 (ru) * 2001-08-01 2003-01-27 Владимиров Владимир Сергеевич Способ получения пористого огнеупорного материала

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU752467B2 (en) * 1996-04-26 2002-09-19 Building Technologies Australia Pty Limited Improved lightweight prefabricated construction element
US6309740B1 (en) * 1999-07-20 2001-10-30 W. R. Grace & Co.-Conn. High temperature heat transfer barrier and vapor barrier and methods
RU2197450C1 (ru) * 2001-08-01 2003-01-27 Владимиров Владимир Сергеевич Способ получения пористого огнеупорного материала

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