GB482409A - Improvements in or relating to cement compositions - Google Patents
Improvements in or relating to cement compositionsInfo
- Publication number
- GB482409A GB482409A GB1077737A GB1077737A GB482409A GB 482409 A GB482409 A GB 482409A GB 1077737 A GB1077737 A GB 1077737A GB 1077737 A GB1077737 A GB 1077737A GB 482409 A GB482409 A GB 482409A
- Authority
- GB
- United Kingdom
- Prior art keywords
- modulus
- fe2o3
- al2o3
- cement
- puzzolana
- 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
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
- C04B7/00—Hydraulic cements
- C04B7/22—Iron ore cements ; Iron rich cements, e.g. Ferrari cements, Kühl cements
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The raw material composition for making a Portland cement is so adjusted that the cement has an alumina modulus, viz.: the ratio Al2O3/Fe2O3 of between 0,90 and 0,45, and a silicate modulus, viz.: the ratio SiO2/Fe2O3 + Al2O3, of between 1,10 and 1,75 and a lime standard, as defined in the Specification, of above 90. Preferably, the alumina modulus is about 0,64, i.e. equimolar proportions of Al2O3 and Fe2O3 and the silicate modulus is about 1,40. In carrying out the invention, ferric oxide may be added to the usual raw materials for making Portland cement. Such a cement may be admixed with high, e.g. of the order of 5 per cent, proportions of gypsum or calcium chloride. It may also be admixed with puzzolana as by grinding puzzolana with the clinker. Specifications 231,535, [Class 22], 400,813, and 425,856 are referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1077737A GB482409A (en) | 1937-04-15 | 1937-04-15 | Improvements in or relating to cement compositions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1077737A GB482409A (en) | 1937-04-15 | 1937-04-15 | Improvements in or relating to cement compositions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB482409A true GB482409A (en) | 1938-03-29 |
Family
ID=9974067
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1077737A Expired GB482409A (en) | 1937-04-15 | 1937-04-15 | Improvements in or relating to cement compositions |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB482409A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2202859A1 (en) * | 1972-10-11 | 1974-05-10 | Ass Portland Cement |
-
1937
- 1937-04-15 GB GB1077737A patent/GB482409A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2202859A1 (en) * | 1972-10-11 | 1974-05-10 | Ass Portland Cement |
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