Here is a compilation of essays on ‘Hydrated Cement’ for class 8, 9, 10, 11 and 12. Find paragraphs, long and short essays on ‘Hydrated Cement’ especially written for school and college students. Essay on Hydrated Cement Essay Contents: Essay on the Process of Hydration of Cement Essay on the Water Requirement for Hydration of Cement Essay on the Structure [...]
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 manufacture of cement requires strict control on its quality. Therefore the following tests and specifications have been laid as per I.S.I. 269-1967 and 1976: 1. Chemical composition 2. Fineness 3. Soundness 4. Consistency test 5. Setting time 6. Compressive strength 7. Tensile strength 8. Heat of Hydration. 1. Chemical Composition: The ordinary and rapid hardening Portland cements can be [...]
The below mentioned article will guide you about how to determine the fineness of cement. Determination of Fineness of Cement by Specific Surface by Blaine Air Permeability Method (as per IS 4031-1958): The determination of specific surface of cement is a recent development. It is a very accurate method of determining the firmness of cement, which affects the hydration and [...]
In this article we will discuss about:- 1. Introduction to High Alumina Cement 2. Manufacture of High Alumina Cement 3. Hydration 4. Effect of Conversion 5. Effect of Curing Temperature 6. Physical Properties 7. Refractory Properties. Introduction to High Alumina Cement: This cement is quite different from ordinary Portland cement in its composition and also in some properties. Hence its [...]
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 [...]