Portland cement is the most common and widespread type of cement which is one of the most basic ingredients for developing concrete. It is formed after mixing it up with water that takes a form of paste which is then hardened by adding sand and rock. It was invented by Joseph Aspdin in England during the 19th century. Lime, silica, alumina and iron were heated at high temperatures in a kiln that is further processed from stony residue to a fine powder that we know as cement.
Specifications of Portland Cement
Portland cement is further specified and divided into categories based on its chemical composition and finishing ingredients.
- Type I – for general purpose
- Type IA – same as Type I, but when air entrainment is desired
- Type II – for moderate sulfate resistance
- Type IIA – same as Type II, but when air entrainment is desired
- Type II(MH) – much like Type II, but when moderate heat of hydration is desired
- Type II(MH)A – same as Type II(MH), but when air entrainment is desired
- Type III – for high early strength
- Type IIIA — same as Type III, but when air entrainment is desired
- Type IV – for low heat of hydration
- Type V – for high sulfate resistance
Which physical conditions are required to ensure high quality?
Physical requirements for cement are air content, finesse, heat of hydration, and setting time. It is tested by mortar or paste created by that cement. These tests are carried out to confirm if the cement can do well in concrete. However performance indicator for concrete is taken by all of the ingredients included not only cement. Specifically their quantities and handling/manufacturing procedures determine that.
What makes Carvan cement different?
Carvan Construction Material Company is known for its quality products & competitive prices. We take special care to maintain international standards and provide utmost satisfaction to our customers.