Know the Logic behind Cement Variant Names

Cement is being manufactured in many variants today. This often confuses the layman who does not know which cement to use. Besides Portland cement, the market offers blended or PPC cement as well.


You would find many variants within Portland cement itself – 33, 43 and 53. Some manufacturers also produce cement varieties in forms such as masonry cement, high strength cement and sulphated cement.


The important thing to remember is that there is no good or bad cement, the choice should depend upon the intended application. It is interesting to note that while in the earlier times, only Portland cement used to be available, the abundant supply of fly ash resulted in the development of Pozzolana cement.


The demand from rail companies for high strength cement to be used for manufacturing sleepers put a pressure on cement manufacturers to produce special variants of cement. Such high grades of cement are also required in the construction of long span bridges, high rise structures and other structures of gigantic magnitude.


Broadly speaking:

• 33 Grade cement meets the requirement of small constructions

• 43 Grade cement is used for pre-cast concrete production and sleeper manufacture

• 53 Grade cement is used for heavy infrastructure and civil engineering applications.


One important point that must be remembered is that for most industrial and heavy applications, cement is not used directly but is rather an important input for concrete. Blended varieties of cement provide higher levels of strength and durability. While 53 Grade OPC has its own specific applications, it is not advisable to be used for ordinary structures.

Author :- Jack Albert is a dedicated writer writes for Jklakshmi, which is a brand cement industry also one of the best manufacturer in plaster of paris.

Safety with cement

When cement is mixed with water a highly alkaline solution (pH ~13) is produced by the dissolution of calcium, sodium and potassium hydroxides. Gloves, goggles and a filter mask should be used for protection. Hands should be washed after contact. Cement can cause serious burns if contact is prolonged or if skin is not washed promptly. Once the cement hydrates, the hardened mass can be safely touched without gloves.

In Scandinavia, France and the UK, the level of chromium(VI), which is thought to be toxic and a major skin irritant, may not exceed 2 ppm (parts per million).

Resourse :- http://en.wikipedia.org

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Cement Calculator

The concrete calculator will save you a lot of time and headaches trying to remember all the forumulae for area and volume of cylinders and cubes.

When you go down to the local building supply store you will know exactly how many bags of pre-mix cement you will need. And if you are using a footing or one of the pre-formed footing bases, we have the volumes already pre-calculated for you.

Use our Cement calculator to quickly and accurately determine the volume of cement you will need for the footings or your deck.

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Resourse :- www.ideas-for-deck-designs.com

Pakistan starts exporting cement to India

Bilateral trade between India and Pakistan has taken a significant step forward with at least five Pakistani companies approved by the Bureau of Indian Standards (BIS) starting to export cement to India while five more manufacturers have applied for certification.

'A total of 11 cement companies have been cleared by the BIS and four more have applied to get approval for export,' Shahzad Ahmed, secretary of All Pakistan Cement Manufacturers Association (APCMA), told IANS.

The idea of cement export from Pakistan surfaced during a meeting between Prime Minister Manmohan Singh and Pakistan's former prime minister Shaukat Aziz in 2005.

Pakistani exporters were encouraged by the Indian's government steps to abolish countervailing duty and additional customs duty, making imports viable.

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Resourse :- www.nerve.in/news