What is C3S in clinker?
Alite (C3S): the alite crystal is the preferred clinker phase in Portland cement clinker. The formation of alite is very complex. Alite is only formed in the presence of excess CaO, that is, at CaO/SiO2 > 1 and is thermodynamically stable above 1250°C [44].
What is the range of C3S in clinker?
Clinker C3S contents of up to ±67 per cent in grey cement clinker can be achieved by raising the lime saturation of the clinker towards 100 per cent. Beyond 100 per cent lime saturation the additional lime will be present as free lime and there will be no additional C3S.
What causes high free lime in clinker?
The increases of clinker free lime content may originate from a disorder of the cooking process (insufficient curing temperature, decomposition of Alite caused by overcooking or a too slow cooling of the clinker, reducing conditions in the cooking zone, ) or the failure in preparing the raw (high level of lime …
What is the clinker temperature?
approximately 1450 °C
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.
What is C3S?
C3S (Cement component) Natural alite. Calcium oxide silicate (Ca3O(SiO4)) Calcium silicate (Ca3SiO5)
What is the function of C3S in cement?
It is the hydration of the calcium silicate, aluminate, and aluminoferrite minerals that causes the hardening, or setting, of cement. The ratio of C3S to C2S helps to determine how fast the cement will set, with faster setting occurring with higher C3S contents. Lower C3A content promotes resistance to sulfates.
What is clinker factor?
Clinker factor The percentage of clinker in cement (according to the WBCSD-CSI Cement CO2 and Energy Protocol).
What is kiln process?
A kiln is a thermally insulated chamber, a type of oven, that produces temperatures sufficient to complete some process, such as hardening, drying, or chemical changes. Kilns have been used for millennia to turn objects made from clay into pottery, tiles and bricks.
How is a clinker made?
Cement clinker is a solid material produced in the manufacture of Portland cement as an intermediary product. It is produced by sintering (fusing together without melting to the point of liquefaction) limestone and aluminosilicate materials such as clay during the cement kiln stage.
What is the role of C3S?
What compound is C3S?
Tricalcium silicate
| PubChem CID | 25523 |
|---|---|
| Molecular Formula | Ca3O5Si |
| Synonyms | TRICALCIUM SILICATE Tricalcium silicon pentaoxide 12168-85-3 dicalcium;oxocalcium;silicate C3S (Cement component) More… |
| Molecular Weight | 228.32 |
| Component Compounds | CID 5460341 (Calcium) CID 14778 (Calcium oxide) CID 14942 (Orthosilicic acid) |