What is a clinker factor?
Clinker. An intermediate product in cement manufacturing produced by decarbonizing, sintering, and fast- cooling ground limestone. Clinker factor. The percentage of clinker in cement (according to the WBCSD-CSI Cement CO2 and Energy Protocol).
How do you reduce clinker factor?
Reducing the Clinker Factor by partially substituting the clinker used in the composite cement production process with materials that have binding properties (also known as mineral components).
Why is clinker called clinker?
Clinkers are so named for the metallic sound they make when struck together. Clinker bricks are denser, heavier, and more irregular than standard bricks.
What is cement clinker Class 11?
Al2O3.Fe2O3. Due to very high temperature in this zone, about 20-30 % combines with solid mass to form grey coloured balls called cements clinkers. The hot clinkers are cooled by cold air and are mixed with 2-3 % gypsum and finely powdered to 325 mesh size in grinding machine.
What is the percentage of clinker in cement?
The use of other constituents in cement and the reduction of the clinker-to-cement ratio means lower emissions and lower energy use. Ordinary Portland cement can contain up to 95% clinker (the other 5% being gypsum). The current average clinker-to-cement ratio over all cement types in the EU27 is 73.7% 1.
What is clinker content in cement?
It contains 76% alite, 15% belite, 7% tricalcium aluminate, no tetracalcium aluminoferrite, and 2% free lime, but the composition may vary widely. White clinker produces white cement which is used for aesthetic purposes in construction.
What is the size of clinker?
Portland cement clinker is nodules (diameters, 5–25 mm) of sintered material produced by heating a homogeneous mixture of raw materials in a kiln to a sintering temperature of approximately 1450 °C for modern cements.
How clinker is formed?
Clinkers, also known as slag, and in coal fired boilers consist of the noncombustible elements and minerals found in coal that melt and fuse together as lumpy ashes from coal combustion. Clinkers resemble volcanic ash and lava. They occur in the high-temperature furnace area of the boiler.
What is the meaning of belite?
Definition of belite : larnite found as a constituent of portland-cement clinker.
What is Alite and belite in cement?
Alite is impure tricalcium silicate (C3S) and belite is impure dicalcium silicate (C2S). The impurities arise as cement is manufactured from natural raw materials (and because alumina and iron are included to form liquids at kiln temperatures to improve the efficiency of kiln reactions) rather than purified chemicals.
What is cement BYJU’s?
Cement is essentially a finely powdered mixture of calcium silicate and aluminates along with small quantities of gypsum which sets into a hard stone like mass when treated with water.
What is clinker where it is used?
Clinker is primarily used to produce cement. Since it can be stored in dry condition for several months without noticeable deterioration, it is traded internationally in large amounts. Cement manufacturers buy clinker for their cement plants in areas where raw materials for cement are scarce or unavailable.
What is lime saturation factor?
Lime Saturation Factor (LSF) The Lime Saturation Factor is a ratio of CaO to the other three main oxides. Applied to clinker, it is calculated as: LSF=CaO/(2.8SiO2 + 1.2Al2O3 + 0.65Fe2O3) Often, this is referred to as a percentage and therefore multiplied by 100. LSF to be maintained in limestone 102-104.
How do you calculate clinker weight?
Cement, clinker weighs 1.415 gram per cubic centimeter or 1 415 kilogram per cubic meter, i.e. density of cement, clinker is equal to 1 415 kg/m³. In Imperial or US customary measurement system, the density is equal to 88.3356 pound per cubic foot [lb/ft³], or 0.81792 ounce per cubic inch [oz/inch³] .
What is the chemical formula of clinker?
1.3. 3 Clinkering reactions and the minerals present in Portland cement clinker
| Shorthand nomenclature | Chemical formula | Typical range (mass %) |
|---|---|---|
| or Ca2SiO4 | ||
| C3A | 3CaO·Al2O3 | 5–12 |
| or Ca3Al2O6 | ||
| C4AF | 4CaO·Al2O3·Fe2O3 | 6–12 |
What is clinker quality?
Clinker quality depends on raw material composition. If the raw materials are inappropriate, or if they are blended improperly, buildings and roads made from the concrete will have poor strength and durability.