Properties of aggregate


Aggregate is an important constituent in concrete. It occupies about three-quarters of the volume of concrete, it contributes significantly to the structural performance of concrete, especially strength, durability, and volume stability. Properties of aggregate Because of the following properties of aggregates are used in a huge amount in …

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Thermal design of a building

Thermal design of a building

For non-conditioned building, it calculates temperature variation inside the residential building over a specified time and helps one to estimate the duration of uncomfortable periods. Various heat exchange processes square measure attainable between a building and therefore the external atmosphere. Heat flow by conduction through various building elements …

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Building Materials


While talking about building materials, it will be better to recall the history of the development of human civilization. The use of building materials starts from the beginning of the Neolithic period when man learned to make weapons of stones, metal ore, arrows etc to kill the animals …

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Cast iron

cast iron

Cast iron is a more purified form of iron, which contains less amount of impurities than in the pig iron. This is obtained by remelting the pig iron in the blast furnace-like structure known as the cupola. Composition of cast iron Cast iron is also an impure iron …

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Tiles, EarthenWare and Glazing


Tiles Tiles are thin slabs used for covering roofs, for flooring or for making drains and may be formed of brick earth burnt in kilns or concrete. Brick earth used for manufacturing bricks tiles is more pure and is prepared more thoroughly than the one used for manufacturing …

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Different aggregates test


Test for determination of aggregate abrasion value The aggregate abrasion value gives the resistance of an aggregate against wearing. The test involves taking specified quantity of standard size material along with specified number of abrasive charge in a standard cylinder and revolving it for certain specific revolutions. The …

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Bulking of sand


Bulking of sand is the increase in volume of a given weight of sand cause by the films of water pushing the sand particles apart. Free moisture forms a film around each particle. This film of moisture exerts surface tension which keeps the neighboring particles away from it. …

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