GB400813A - Cement having advantageous setting and hardening properties - Google Patents
Cement having advantageous setting and hardening propertiesInfo
- Publication number
- GB400813A GB400813A GB263533A GB263533A GB400813A GB 400813 A GB400813 A GB 400813A GB 263533 A GB263533 A GB 263533A GB 263533 A GB263533 A GB 263533A GB 400813 A GB400813 A GB 400813A
- Authority
- GB
- United Kingdom
- Prior art keywords
- per cent
- 3cao
- al2o3
- clinker
- fe2o3
- 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
-
- 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
- C04B7/02—Portland cement
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)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
A Portland cement of low heat of hardening comprises ground clinker containing less than 12 per cent of 3CaO.Al2O3, less than 3 per cent of 3CaO.Fe2O3, at least 10 per cent of 3CaO.SiO2, and having a value less than 45 per cent for the function per cent 3CaOSiO2 + 2 X per cent 3CaO.Al2O3. The manufacturing steps and the type of raw materials are substantially the same as for ordinary Portland cements, but the raw materials are chosen to give different proportions of the four essential oxides lime, silica, alumina and ferric oxide. In general the proportion of lime to silica is reduced and the proportion of iron oxide to alumina is relatively high but must not be substantially greater than one. The clinker is ground to normal cement fineness. In an example, a clinker comprises on analysis 63,1 per cent of CaO, 2,5 per cent of MgO, 25,9 per cent of SiO2, 3,5 per cent of Al2O3, and 5 per cent of Fe2O3. The constituent compounds of this clinker are 29,4 per cent of 3CaO.SiO2, 52,1 per cent of 2CaO.SiO2, 15,2 per cent of 4CaO.Al2O3.Fe2O3, ,8 per cent of 3CaO.Al2O3, and no 2CaO.Fe2O3. The MgO remains uncombined. The clinker is ground to a fineness corresponding to a specific surface of 1450 sq. cms. per gram., and has a heat of hardening of 60,9 calories per gram.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US50492XA | 1932-02-02 | 1932-02-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB400813A true GB400813A (en) | 1933-11-02 |
Family
ID=21713886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB263533A Expired GB400813A (en) | 1932-02-02 | 1933-01-27 | Cement having advantageous setting and hardening properties |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE662981C (en) |
| DK (1) | DK50492C (en) |
| GB (1) | GB400813A (en) |
-
1933
- 1933-01-26 DE DER87077D patent/DE662981C/en not_active Expired
- 1933-01-27 GB GB263533A patent/GB400813A/en not_active Expired
- 1933-01-28 DK DK50492D patent/DK50492C/en active
Also Published As
| Publication number | Publication date |
|---|---|
| DE662981C (en) | 1938-07-26 |
| DK50492C (en) | 1935-07-29 |
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