GB463406A - Improvements in or relating to cementitious materials - Google Patents

Improvements in or relating to cementitious materials

Info

Publication number
GB463406A
GB463406A GB2361435A GB2361435A GB463406A GB 463406 A GB463406 A GB 463406A GB 2361435 A GB2361435 A GB 2361435A GB 2361435 A GB2361435 A GB 2361435A GB 463406 A GB463406 A GB 463406A
Authority
GB
United Kingdom
Prior art keywords
cement
fluoride
salts
sodium
carbonate
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.)
Expired
Application number
GB2361435A
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.)
BAKELITE BUILDING PRODUCTS COM
Original Assignee
BAKELITE BUILDING PRODUCTS COM
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 BAKELITE BUILDING PRODUCTS COM filed Critical BAKELITE BUILDING PRODUCTS COM
Priority to GB2361435A priority Critical patent/GB463406A/en
Publication of GB463406A publication Critical patent/GB463406A/en
Expired 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
    • 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
    • C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
    • C04B22/08—Acids or salts thereof
    • C04B22/12—Acids or salts thereof containing halogen in the anion
    • C04B22/126—Fluorine compounds, e.g. silico-fluorine compounds

Landscapes

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

Abstract

The efflorescence of cementitious materials, such as Portland cement and lime and gypsum plasters, in which calcium hydroxide is present or is formed is prevented by incorporating sodium fluoride in the cement before it has set. Other salts which react with the calcium hydroxide to form an insoluble calcium salt may also be added. Additional salts specified are salts of comparatively low solubility such as magnesium carbonate, magnesium fluoride, aluminium fluoride and sodium oxalate, and salts of higher solubility such as ammonium carbonate, sodium carbonate, potassium fluoride, ammonium fluoride and potassium oxalate; the salts of high solubility are particularly useful when the cement contains a relatively large proportion of free lime. The sodium fluoride, with or without the additional salts, is preferably mixed with the cement during the manufacture of the cement, but it may be dissolved in water and incorporated in the cement just before use. The fluoride is preferably used in such amounts that it will form a saturated solution with the mixing water of the cement and leave an excess of salt, viz. about 5-7 per cent of the cement. Specifications 290,309, [Class 22], 355,902; and 423,694, [Group X], are referred to.
GB2361435A 1935-08-22 1935-08-22 Improvements in or relating to cementitious materials Expired GB463406A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2361435A GB463406A (en) 1935-08-22 1935-08-22 Improvements in or relating to cementitious materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2361435A GB463406A (en) 1935-08-22 1935-08-22 Improvements in or relating to cementitious materials

Publications (1)

Publication Number Publication Date
GB463406A true GB463406A (en) 1937-03-22

Family

ID=10198495

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2361435A Expired GB463406A (en) 1935-08-22 1935-08-22 Improvements in or relating to cementitious materials

Country Status (1)

Country Link
GB (1) GB463406A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6893291B2 (en) 2002-07-02 2005-05-17 Tyco Electronics Amp Gmbh Coaxial plug connector having a longitudinally divided shield housing, and coaxial angled plug connector

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6893291B2 (en) 2002-07-02 2005-05-17 Tyco Electronics Amp Gmbh Coaxial plug connector having a longitudinally divided shield housing, and coaxial angled plug connector

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