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Hydrophobic cement

Hydrophobic cement
July 12
16:12 2014
Hydrophobic cement Hydrophobic cement Hydrophobic cement Hydrophobic cement

Hydrophobic Cement

Hydrophobic cement contains admixtures which decrease the wetting ability of cement grains. The usual hydrophobic admixtures are acidol, naphthenesoap, oxidized petrolatum, etc. These substances form a thin film around cement grains.

When water is added to hydrophobic cement, the absorption films are torn of the surface and they do not in any way, prevent the normal hardening of cement. However, in initial stage, the gain in strength is less as hydrophobic films on cement grains prevent the interaction with water. However the strength of hydrophobic cement after 25 days is equal to that of ordinary Portland cement.

When hydrophobic cement is used, the fine pores in concrete are uniformly distributed and thus the frost resistance and the water resistance of such concrete are considerably increased.

Get more informaton on Types of Cement

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