Machine Mixing:

Machine mixing ensures a better and uniform mixing of concrete. It produces concrete of better quality and at much faster rate as compared to that with hand mixing. Now-a-days concrete mixers are very common and are frequently used even for small works. The concrete mixers are available within several types and capacities such as drum type and pan type, non-tilting kind and tilting kind, batch mixers and continuous mixers, etc. The selection of mixer depends upon the size, nature and extent of work. The capacity of a mixer should be such that it can produce required amount of concrete per hour under normal working conditions of these mixers. Machine mixing can proves to be economical and capable particularly for large works.

Whatever might be the kind of mixers the mixing of concrete in a concrete mixer is carried out in the following steps:

(a)        Installing the mixer

(b)       Charging/feeding the ingredients

(c)        Mixing the ingredients

(d)       Discharging the concrete mix