Concrete Mixer Truck: Why Would We rather Dump the Concrete than Stuff It?

2022-04-15 17:55:57 Concrete is composed of stone, sand, cement and water, if the concrete mixer truck does not rotate during transportation and constantly bumps, the stone will sink to the bottom, the sand will be in the middle, and the cement and water will be on the top. There will be agglomeration which is also what we often call the “stuffy tank” when the concrete mixer truck arrive at the destination.
 
Therefore, rotation prevents the concrete from solidification and delamination, and also allows the concrete to be mixed more uniformly.
 
▎stuffy tank
 
Many of us have seen concrete pouring on the side of the road. What we may be curious about is that it is too wasteful, so why not use such a truck of concrete?
 
During the transportation of the concrete mixer truck, sometimes various failures or long-term traffic jams occur, which will cause the concrete to solidify in the tank and cause the phenomenon of stuffy tank .
 
After this happened, people also came up with a lot of methods, such as cutting a hole in a certain position of the tank body, then manually cleaning the concrete inside with an air pick, and finally sealing the opening by welding.
 
There is also a wall breaker combined with a rhinestone to make holes, which can reduce the splashing of dust and sand, and then discharge it from the discharge port. This method is also more efficient.
 
There is also the method of thermal expansion and contraction. Even if the tank is blocked, there will still be space in the tank. After the concrete is burned with oil, it will be quickly poured and cooled, and the concrete will become brittle, which is easier to clean.
 
It is said that there are also bombing with gunpowder directly in some countries, but this requires professional personnel to operate, and the risk is also very large. Therefore, the easiest way is to directly change a tank.
 
The cost of cleaning the stuffy tank varies according to different places and cleaning methods, but the minimum is more than $1000, and in some places it will reach $3000. What’s worse, the tank after cleaning is more or less damaged, and the service life will be shortened.
 
▎Structure of concrete mixer truck
 


The outer shell of the tank is made of wear-resistant steel. In order to automatically load and unload concrete, there are also special-shaped rotating blades welded inside. When rotating, the concrete will move along with the direction of the rotation of the blades so that all ingredients can be mixed and stirred thoroughly in the process of continuous rotation.
 
During the process of loading and transportation, the tank body rotates clockwise, and the concrete will move inward with the blade. While during the discharging process, the tank body will reverse, and the concrete will be discharged outward along the blade.
 
The rotation of the tank is completed by the hydraulic drive system on the truck. Usually, the hydraulic pump is driven by the power take-off shaft on the truck to drive the mixing tank to rotate.
 
We can often see various traffic accidents about concrete mixer trucks in various reports, which also caused a lot of casualties. The main reason is that the entire chassis of the concrete mixer truck is very high. There will be a lot of blind spots especially when turning when the drivers are operating. In addition, the speed of concrete mixer trucks is generally fast, and the braking distance will be longer due to the body and heavy concrete, which are the reasons for the frequent occurrence of accidents.
 
The above is the new information provided by Zhengzhou Talenet. For more information, please come : http://www.talenetmix.com, we will share with you later