Advantages of using sulphate resisting cement,
The sulphate resistant cement is made with low C3A content is found to be effective. Such cement with low C3A and comparitively low C4AF content is known as sulphate resisting cement. This cement has a high silicate content.The specification generally limits the C3A content to 5 percent.
it has less chloride binding capacity
the limit concentration of sulphate is 1000 ppm after that "sulphate resistant cement" should be used
The properties of cement are,Chemical compositionLoss on ignitionInsoluble residuessulphur content and magnesia contentSoundnessHeat of hydrationSetting timeInitial setting timeFinal Setting timeFinenessStrength of cementConsistency.
Actually both physical and chemical changes are happening during cement mixing.
Basic chemical elements in Portland Cement are calcium, silicon, aluminum and iron oxide.....
Cement is alkaline. However, when mixed with steel (reinforcing bars)(Iron) , which is acidic. they neutralise one another, and so are resistant to weathering.
the limit concentration of sulphate is 1000 ppm after that "sulphate resistant cement" should be used
sulphate resisting cement. Mainly applied for concrete in waste water facilities.
sulphate resistant cement
The sulphate resistant cement is made with low C3A content is found to be effective.Such cement with low C3A and comparitively low C4AF content is known as sulphate resisting cement.This cement has a high silicate content.The specification generally limits the C3A content to 5 percent.
magnesium sulphate
Portland Cement is made by baking limestone to remove the carbonate, and to this is added some gypsum (to provide sulphate) and diatomaceous earth (effectively a very finely divided silica). When curing, many complex chemicals are formed, the crystals of which give cement its strength. Silicates, sulphates, and carbonates.
Uses:Used in fabrication of pipes which are likely to be buried in marshy region or sulphate bearing soils.Used in marine conditions.Concrete to be used in foundation and basement.Used in the construction of sewage treatment works.
The properties of cement are,FinenessNormal consistencySetting timeSoundnessHeat of hydrationStrength of cement.
The properties of cement are,Chemical compositionLoss on ignitionInsoluble residuessulphur content and magnesia contentSoundnessHeat of hydrationSetting timeInitial setting timeFinal Setting timeFinenessStrength of cementConsistency.
the properties the statue must have is the cement the mold (the thing that holds the cement) ,or you have to break it some how
Properties of fresh concrete:WorkabilitysegregationBleedingHarshnessProperties of hardened concrete:DurabilityPermeabilityCreepShrinkage
cement board