Ready Mixed concrete is a kind of concrete that delivered for placing form a central plant which use of truck mixers ensures care in transportation, thus preventing segregation and maintaining workability. The cost of ready-mixed concrete, since it is a bought commodity, is some what higher than that mixed at the site, but this is often offset by savings in site organization, in supervising staff, and in cement content.
Types of Ready Mix Concrete
Central-mixed concrete, is completely mixed at the plant, and the truck mixer is only used as an agitating conveyance.
Transit-mixed concrete, is partially or completely mixed during the time the concrete is being transported to the job site.
Shrink-mixed concrete, is partially mixed at the plant to shrink or reduce the overall volume, and mixing is completed in the truck mixer.
Truck- mixed concrete, is completely mixed within the mobile mixer after it has been charged at the central plant. The advantages of truck mixing is that the water can been kept separate from the solid materials and mixed just prior to placement at the construction. Problems of delays in transportation or placement are avoided.