Although the main cause of concrete segregation is the technical problems of the mixing plant, improper transportation and use of the mixing truck may also cause concrete segregation, especially for novices.
1. Segregation caused by too much water. The most important mistake is that novices are particularly prone to make. They do not strictly follow the use process of the mixer truck. When washing the car last time, the water in the mixing tank was not discharged, or they directly fed the material before it was discharged.
2. Segregation caused by shutdown of mixing tank. The mixing tank must not be stopped during transportation. Without mixing, sand, stone and cement will separate from each other, resulting in segregation and deterioration.
3. The rotating speed of the mixing tank is too fast to separate. If the driver makes the mixing tank rotate too fast during concrete transportation, the lower layer of heavy gravel will be caused under the action of centrifugal force, resulting in concrete segregation.
Improper tank design can also cause segregation
Many people say that the larger the mixing tank, the easier it is to dilute. Unqualified tank design will indeed cause segregation, but it has little to do with the size of the tank. It is mainly caused by unqualified installation design angle and workmanship of mixing blades inside the tank.
Some small refitting factories do the top loading, and the tank body design is unqualified, which will cause segregation due to uneven mixing of blades in the tank body. When purchasing a mixer, try to choose a well-known large factory if possible. Generally, there is no problem as long as the mixing tank is produced in a regular large factory.
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