Building Materials, Third Edition

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discharging the mixed concrete. These are designated by a number representing its nominal
mixed batch capacity in litres. The standard size of the mixers available are as follows:

Tilting: 85T, 100T, 140T, 200T
Non-tilting: 200NT, 280NT, 340NT, 400NT, 800NT
Reversing: 200R, 280R, 340R, 400R.
Sometimes the mixers are specified by two quantities, the total volume of ingredients added
and the volume of concrete produced. For example 285/200-litres mixer takes 285 litres of
ingredients and yields 200 liters of concrete.

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 X The tilting mixers may be hand fed or loader (skip) fed. The mixer is generally
bowl shaped or double conical frustum type. It can be tilted for discharging concrete. Blades

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