“Fresh concrete”, which is produced in concrete plant by being mixed with the materials at desired ratios with a computer control and delivered to the consumer, is called “Ready Mixed Concrete”. The distinguishing feature of ready mixed concrete from hand mixed concrete and machine mixed concrete is that it is produced in modern facilities with computer control. The qualities ready mixed concrete users will look for are stated in TS EN 206.
There two types of ready mixed concrete production according to the performance of water measurement and mixing processes in plant or transit mixer:
- Dry System
- Wet System
Dry mixture ready mixed concrete is the ready mixed concrete of which aggregate and cement are measured and mixed with transit mixer in the plant, and of which water and chemical admixtures, if any, are measured and mixed in delivery location. For dry mixture ready mixed concrete, special attention should be paid to water amount given to mixture(not exceeding the amount formulated) and mixing time(sufficient time for a homogenous mixture) in worksite.
Wet mixture ready mixed concrete is the ready mixed concrete of which all ingredients including water are measured and mixed in the concrete plant.