Expansive Cement Expansive cement is a special type of cement when mixed with water,which forms a paste that, during and after setting and hardening increases significantly in volume.Shrinkage compensating concrete motor in an expansive cement concrete motor in which expansion if restained induces compressive stresses which approximately offset tensile stresses in concrete induced by dryingContinue reading “EXPANSIVE CEMENT – MANUFACTURE, PROPERTIES, TYPES AND USES”
Tag Archives: CEMENT
AIR ENTRAINED CEMENT – MANUFACTURE, PROPERTIES, ADVANTAGES AND DISADVANTAGES
Air Entrained Cement Air Entrained Portland Cement is a special cement that contains billions of microscopic air bubbles per cubic foot.These air bubbles provides the space for expansion of minute droplets of water in the concrete due to freezing and thawing.The air bubbles increase the workability of the concrete and lower the water cement ratio.HoweverContinue reading “AIR ENTRAINED CEMENT – MANUFACTURE, PROPERTIES, ADVANTAGES AND DISADVANTAGES”
HYDROPHOBIC CEMENT – MANUFACTURE, PROPERTIES AND USES
Hydrophobic Cement Hydrophobic cement contains admixtures which decreases the wetting ability of cement grains.The usual hydrophobic admixtures are acidol, naphthensoap, oxidized petrolatum etc.Hydrophobic cement is obtained by grinding Ordinary Portland Cement clinkers with water repellent film-forming substance such as stearic acid and oleic acid in order to reduce the rate of deterioration when the cementContinue reading “HYDROPHOBIC CEMENT – MANUFACTURE, PROPERTIES AND USES”
WHITE CEMENT- MANUFACTURE, PROPERTIES AND USES
White Cement White cement or White Portland cement is same as grey Portland Cement the only difference is in its colour and fineness.The colour of white cement is determined by its raw materials and the manufacturing process.Metal oxides,primarily iron and manganese,influence the whiteness and undertone of the materials. India is the 5th largest producer ofContinue reading “WHITE CEMENT- MANUFACTURE, PROPERTIES AND USES”
BLAST FURNACE CEMENT- MANUFACTURE, PROPERTIES, ADVANTAGES, DISADVANTAGES AND USES
Blast Furnace Cement Blast Furnace Cement is the mixture of Ordinary Portland Cement and fine granulated blast furnace slag.This slag is obtained in steel plant as the by product of steel making is produced during the seperation of the molten steel from impurities in steel making furnaces. About 70% of slag is used in theContinue reading “BLAST FURNACE CEMENT- MANUFACTURE, PROPERTIES, ADVANTAGES, DISADVANTAGES AND USES”
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