As construction programmes get shorter, the challenge for mixing equipment manufacturers is to provide technology that delivers homogenous concrete and asphalt with short mixing times. Add to this the desire for the equipment to be either mobile or easy to set up/break down and the pressure is on for manufacturers to up their game. When it comes to concrete there are many types of mixer and each has its own characteristics. The three most popular are twin-shaft mixers, which offer high intensity mixing and short mix times; vertical axis mixers, usually used for precast and prestressed concrete; and drum mixers, which can handle large volumes and provide the lowest operational costs. Concrete mixing trucks provide a fourth alternative. These can be filled with dry materials and water to be mixed en route. More commonly though they would transport a ready-made batch of concrete, with the mixer being used to stop the materials segregating on way to site.
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