Ccncrete mixer machine:
For smaller jobs, such as residential repairs, renovations, or hobbyist-scale projects, many cubic yards of concrete are usually not required. Bagged cement is readily available in small-batch sizes, and aggregate and water are easily obtained in small quantities for the small work site. To service this small-batch concrete market, there are many types of small portable concrete mixers available
A typical portable concrete mixer uses a small revolving drum to mix the components. For smaller jobs the concrete made at the construction site has no time lost in transport, giving the workers ample time to use the concrete before it hardens.
Portable concrete mixers may be powered by a gasoline engine, although it is more common that they are powered by electric motors using standard mains current.
These concrete mixers are further divided based on their loading mechanism. Cement, sand and other aggregates are loaded in a hydraulically operated hopper and then poured in the mixing drum for final mixing and then can be unloaded by tilting the drum. While in Hand Feed Concrete Mixers, cement, sand and other aggregates are directly added to the mixing drum manually. These both type of concrete mixers are highly popular and used in regular construction activities in Africa, some Middle Eastern Countries and in the Indian subcontinent.