It can be seen from the name of concrete mixer truck that this kind of mechanical equipment is mainly used for concrete manufacturing and transportation. The mixing transportation of ready mixed concrete is mainly to transport the finished concrete mixed in the concrete mixing plant. During transportation, the rotation speed of the mixing drum must be well controlled at a low speed of about per minute. The blades in the mixing drum are used to continuously turn over and mix the concrete, so as to prevent segregation or hardening caused by static and ensure the quality of concrete transported to the site.
Although the transportation distance is increased, the distance and time can not be too long, and can not exceed the coagulation time of concrete. The time is still restricted by factors such as concrete quality and environment. So strictly speaking, in different seasons and times. The transportation time is different.
The transportation of mixture is different from that of ready mixed material. The mixture is not finished concrete, it is a semi-finished product. Therefore, the mixing speed of the mixing drum during transportation is much faster than that of the ready mixed material. Generally, the speed is controlled between 8 and 10 revolutions per minute according to the preparation proportion of the concrete mixture.
In order to save time, the mixture can also be mixed into finished concrete during transportation, which requires adding corresponding devices such as water tank. This kind of mixing during transportation can increase the transportation distance and prolong the concrete setting time. It is a good choice for long-distance transportation.
Although in order to increase the transportation distance and prolong the transportation time, mixing the mixture into finished materials during transportation can save fixed investment and improve relative productivity. However, the disadvantages of this method are also obvious. It is difficult to obtain high-quality finished concrete, mainly due to the limitation of equipment.
For the construction with strict requirements, it is better to use the mixing transportation of ready mixed concrete, so most of us see ready mixed concrete mixing trucks.