GB638926A - Improvements relating to the production of magnesium oxychloride cementitious compositions - Google Patents

Improvements relating to the production of magnesium oxychloride cementitious compositions

Info

Publication number
GB638926A
GB638926A GB21849/47A GB2184947A GB638926A GB 638926 A GB638926 A GB 638926A GB 21849/47 A GB21849/47 A GB 21849/47A GB 2184947 A GB2184947 A GB 2184947A GB 638926 A GB638926 A GB 638926A
Authority
GB
United Kingdom
Prior art keywords
magnesium oxide
magnesium
sodium
water
cement
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
GB21849/47A
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.)
WESTVACO CHLORINE PRODUCTS COR
Original Assignee
WESTVACO CHLORINE PRODUCTS COR
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 WESTVACO CHLORINE PRODUCTS COR filed Critical WESTVACO CHLORINE PRODUCTS COR
Publication of GB638926A publication Critical patent/GB638926A/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
    • C04B28/30—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 magnesium cements or similar cements
    • C04B28/32—Magnesium oxychloride cements, e.g. Sorel cement

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

The tendency towards excessive shrinkage after setting of a magnesium oxychloride cement produced from a mixture including magnesium oxide in a form which normally imparts such tendency to the cement, is reduced by mixing the magnesium oxide with magnesium chloride and water in the presence of a water-soluble salt of a phosphoric acid having a lower proportion of combined molecules of water than orthophosphoric acid, examples of suitable salts being sodium triphosphate, sodium tetraphosphate, sodium pyrophosphate and acid pyrophosphate, sodium metaphosphate and polymetaphosphate, and Na14P8O27. The invention applies particularly to cement produced from magnesium oxide derived from seawater, and the phosphate is preferably mixed with the magnesium oxide before mixing with the magnesium chloride. The cement composition may also contain sand, limestone, asbestos and ferric oxide. The Specification as open to inspection under Sect. 91 refers also to the use of these phosphates to inhibit hydration of magnesium oxide in other fields than oxychloride cements, such as inhibiting the thickening of a magnesium oxide slurry. This subject-matter does not appear in the Specification as accepted.
GB21849/47A 1945-09-01 1947-08-08 Improvements relating to the production of magnesium oxychloride cementitious compositions Expired GB638926A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US638926XA 1945-09-01 1945-09-01

Publications (1)

Publication Number Publication Date
GB638926A true GB638926A (en) 1950-06-21

Family

ID=22052194

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21849/47A Expired GB638926A (en) 1945-09-01 1947-08-08 Improvements relating to the production of magnesium oxychloride cementitious compositions

Country Status (1)

Country Link
GB (1) GB638926A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112424140A (en) * 2017-11-07 2021-02-26 米泰克控股公司 Ultra-stable cement-based material formulation, method of making same, and ultra-stable tile backer board formulation and method of making same
US11577999B2 (en) 2017-11-07 2023-02-14 Mitek Holdings, Inc. Ultra stable structural laminate

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112424140A (en) * 2017-11-07 2021-02-26 米泰克控股公司 Ultra-stable cement-based material formulation, method of making same, and ultra-stable tile backer board formulation and method of making same
US11577999B2 (en) 2017-11-07 2023-02-14 Mitek Holdings, Inc. Ultra stable structural laminate
US11777440B2 (en) 2017-11-07 2023-10-03 Mitek Holdings, Inc. Ultra stable cementitious material formulation, process for its making, and ultra stable tile backer board formulation and processes for its making

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