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28 day strength gives 70% of the total strength of the cement and one year strength gives 90% of the total strength of the cement.

One bag cement weighs 50 kg occupying 0.034 cubic meter or 1.23 cubic feet.

There are many types of files used in practice

Commonly used files

Single cut file
Double cut file
Rasp file
Curved cut file

When compared to other files , normal Rasp files have individual, sharp-pointed teeth in a line. These files are half-round shape generally used for soft materials like wood, leather etc.

Mallet is a kind of hammer used for a variety of applications like carpentry and assembly lines and to drive, shape and breaking applications

Generally, mallets are made of wood or rubber in order to avoid spark during operation.

The smallest value that can be measured by the measuring instrument is called its least count

Generally, the least count of vernier height gauge, a vernier calliper is 0.02 mm. The least count og micrometres are 0.01 mm.

Cement manufacturing is done using both dry and wet process. Dry process is usually done for blast furnace slag.

The clinker will be passed through coolers to lower its temperature. It should be obtained dry hence cannot be mixed with water.

The compounds when are formed when the cement is mixed with water is termed as Bougue’s compounds. The reaction is highly exothermic and liberate a high heat of hydration.

The compounds when are formed when the cement is mixed with water is termed as Bougue’s compounds.
The reaction is highly exothermic and liberate a high heat of hydration.

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