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by anonymous

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The construction of buildings have been going on in our history since time immemorial, there have been a lot of ways in which buildings have been constructed throughout the history of mankind from earth, mud and bushes to wood, marbles and concrete. The materials used for building has seen constant change in its use and components, all in the effort to make buildings stronger and everlasting.  In today’s age, constructions of buildings take place using the mixture known as Cement-Concrete mix design which helps in making buildings stronger and long-lasting. The concrete-cement mix is crucial for the whole structure as faults in its creation will lead to devastating results.

The first thing always is ensuring the quality of the materials being used in creating the concrete mix, a great cement-concrete design comes from the unification of good quality materials and good construction practices. Just having the concrete mix isn’t the only requirement; you need to have good technical knowledge about the properties, ratios and different qualities of the materials used to make the cement-concrete mix design. Wrong knowledge or procedures will result in faulty design and failures.

A concrete-cement mix design involves the mixture of cement, aggregates, water and admixture. Out of all of them cement is the most important material which decides how good or bad the concrete mixture is. The cement used by you should be of very good quality adhering to all the standards set by the Indian Standards Organization. The cement should meet the quality tests of the concerned state agencies. Cement is produced to different specifications too, depending on the climate, budget etc. it is produced to meet the demands of the buyer but still adhering to the various quality standards.

There are certain important things that you should be aware of while creating a good cement-concrete mix design for your construction purposes. First, the ratio of cement to water is 70:30, that is, for every 100 Kg of cement you will require 30 liters of water to fully hydrate the cement. Second, the hydration starts as soon as you pour water into the cement so there is no need for you to wait for this process. Third, the higher the water-cement ratio lower is the strength so try to keep the ratio as low as possible. Fourth, order cement early to cool down its temperature, remember 5 degrees rise in cement temperature means 0.5 degrees increase in concrete temperature. Finally, the specified gravity range is 2.90 to 3.15 for blended cement.

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