Often we hear people say that we need to Buy Bearing in India, as the quote Buy Bearing in India is very common as bearings are used in every sector.
It is our duty to know about everything in our surroundings and society.
So now we are going to see the construction material-Brick.
As we are young we have to know the characteristics and uses of the brick and its properties too.
Let us see the properties of the bricks and the uses of the bricks.Qualities of Good Bricks:Bricks should have perfect edges, well-burnt in kilns, copper colored, free form cracks with a proper rectangular shape and of standard size (19*9*9 cm)Bricks should give a clear ring sound when struck with each otherBrick must be homogeneous and free from voidsThe percentage absorption of water by weight should not be greater than 20 percent for first-class bricks and 22 percent for the second-class when soaked in cold water for 24 hoursBricks should not break when dropped from a height of 1 meterBricks should have low thermal conductivity and should be soundproofBricks should not show deposits of salts when immersed in water and driedThe minimum crushing strength of bricks must be 3.5 N/mmUses of Bricks:Bricks are mainly used for the construction of wallsBricks, when molded in the shape of a gutter, can be used as drainsBricks with cavities known as hollow bricks can be used for insulation purpose and because of their lightweight they are more useful in speedy constructionFire bricks are made of fire clay can be used as a refractory materialSand-lime bricks are used for ornamental worksBricks of superior quality can be used in facing a wallClassification of Bricks:First Class Bricks: These are table mounted bricks and of standard shape.
These are used for superior worksSecond Class Bricks: These bricks are ground-molded and burnt in kilns.