Portland cement can be manufactured by intimately mixing together calcareous and argillaceous stones containing silica, alumina, and iron oxide etc. and burning it in large rotary kilns at a temperature of approximately 1400°C to 1500°C. At his temperature the materials partially fuse, forming clinker. This clinker is cooled and ground to fine power. Usually it is gray or brownish in [...]
The following points highlight the four types of Portland Cement. The types are: 1. Portland-Pozzolana Cement (IS 1484-1991) 2. Fly Ash 3. White Cement 4. Coloured Cements. Type # 1. Portland-Pozzolana Cement (IS 1484-1991): An inter ground or blended mixture of Portland cement and pozzolana is called Portland pozzolana cement. This cement can be manufactured either by intimately inter grinding [...]
Main types of portland cements are: 1. Ordinary Portland Cement 2. Modified Cement 3. Rapid Hardening Cement 4. Low Heat Portland Cement (IS 12600-1989) 5. Portland Blast-Furnace Cement or Slag Cement (IS 455-1989) 6. Sulphate Resisting Cement (IS 12330-1988). Type # 1. Ordinary Portland Cement: This type of cement is suitable for use in general concrete construction wherever it is [...]
Numerous cements have been developed for special uses. Some of them are: 1. Hydrophobic Portland Cement 2. Masonry Portland Cement 3. Anti-Bacterial Portland Cement 4. Expansive Portland Cement 5. IRST 40 Special Grade Portland Cement 6. Oil Well Portland Cement 7. Rediset Portland Cement. 1. Hydrophobic Portland Cement: This cement is obtained by grinding ordinary Portland cement clinker with 0.1 [...]