Necessity and use of Ready Mixed Concrete:

•  If instead of being batched and mixed on the site concrete is delivered ready for placing from a central plant, it is referred to as ready mixed premixed concrete. This type of concrete used extensively in many countries as it offers numerous advantages in comparison with the conventional method of manufacture.
• Ready Mixed Concrete is particularly useful on congested sites or in road construction where little space for the mixing plant and for extensively aggregate stock piles is available, but perhaps the greatest single advantage of Ready Mixed Concrete is that it may be made under better condition of control than are normally possible on any but large construction sites.
• Control has to be unforced but, since the central mixing plant operates under near factory conditions, a really close control of all operations manufactures of fresh concrete is possible.
• Proper care during transportation of concrete is also ensured by use of agitator trucks, but placing and compaction remains, of course, the responsibility of the personal on site.
• Ready Mixed Concrete can be considered to be more in the factory made product, almost comparable with steel, so that the great deal of uncertainty and variability associated with the production of concrete on many a site is removed.
• The use of Ready Mixed Concrete is also advantageous when only small quantities of concrete are required or when concrete is placed only at intervals. Usually, the price of Ready Mixed Concrete is somewhat higher than of site mixed concrete, but this may often be offset by saving in the cement content, site organisation and supervisory staff.
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