NL7709523A - Glass fibre reinforced cement - treated with gaseous silicon tetra:fluoride to give improved retention of mechanical properties - Google Patents

Glass fibre reinforced cement - treated with gaseous silicon tetra:fluoride to give improved retention of mechanical properties

Info

Publication number
NL7709523A
NL7709523A NL7709523A NL7709523A NL7709523A NL 7709523 A NL7709523 A NL 7709523A NL 7709523 A NL7709523 A NL 7709523A NL 7709523 A NL7709523 A NL 7709523A NL 7709523 A NL7709523 A NL 7709523A
Authority
NL
Netherlands
Prior art keywords
treated
fibre reinforced
glass fibre
reinforced cement
fluoride
Prior art date
Application number
NL7709523A
Other languages
Dutch (nl)
Original Assignee
Stamicarbon
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 Stamicarbon filed Critical Stamicarbon
Priority to NL7709523A priority Critical patent/NL7709523A/en
Publication of NL7709523A publication Critical patent/NL7709523A/en

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
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
    • 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
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
    • C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
    • C04B41/5018—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with fluorine compounds
    • C04B41/5019—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with fluorine compounds applied from the gas phase, e.g. ocratation
    • 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
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/60—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only artificial stone
    • C04B41/61—Coating or impregnation
    • C04B41/65—Coating or impregnation with inorganic materials
    • C04B41/66—Fluorides, e.g. ocratation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Glass Compositions (AREA)

Abstract

Glass fibre reinforced cement composites with improved durability are made by treating the material with gaseous SiF4. The treatment is pref. carried out in an autoclave, until the Ca(OH)2 in teh inter filamentary spaced has been converted into CaF2. The treatment reduces the level of alkalinity of the prod. so that long term degradation of the glass fibres by the alkaline cement is reduced and the prod. retains its high initial mechanical strength for long periods. Conversion of the inter filamentary crystalline Ca(OH)2 into CaF2 reduces the physical pressure on the glass fibres and thus reduces mechanical damage to the fibres. The SiF4 penetrates deep into the interior of the body, in contrast to CO2 previously used. Treated prods. have improved resistance to household chemicals.
NL7709523A 1977-08-30 1977-08-30 Glass fibre reinforced cement - treated with gaseous silicon tetra:fluoride to give improved retention of mechanical properties NL7709523A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL7709523A NL7709523A (en) 1977-08-30 1977-08-30 Glass fibre reinforced cement - treated with gaseous silicon tetra:fluoride to give improved retention of mechanical properties

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7709523A NL7709523A (en) 1977-08-30 1977-08-30 Glass fibre reinforced cement - treated with gaseous silicon tetra:fluoride to give improved retention of mechanical properties

Publications (1)

Publication Number Publication Date
NL7709523A true NL7709523A (en) 1979-03-02

Family

ID=19829099

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7709523A NL7709523A (en) 1977-08-30 1977-08-30 Glass fibre reinforced cement - treated with gaseous silicon tetra:fluoride to give improved retention of mechanical properties

Country Status (1)

Country Link
NL (1) NL7709523A (en)

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Legal Events

Date Code Title Description
BV The patent application has lapsed