Do you understand the actual distinction between a cement truck and a concrete truck? Although often used interchangeably, these two terms denote vehicles that have radically different cargo and the significance of this is immense in terms of logistics, project planning, and material science. Discover the big difference that lies between a ready-mix truck of concrete and a powdered binder truck- a difference that characterizes the modern construction performance.
That widely used rotating-drum type of vehicle, the one that everybody passes on the highways and construction sites, is, with few exceptions, a concrete truck. But in the construction, engineering and logistics industry, this is a technical misnomer. That truck is actually called a concrete truck, which is also termed as a transit mixer or ready-mix concrete truck.
The key distinction would begin with the basic concept of relationship between cement and concrete itself. Although the two terms have become interchangeable, they mean two different things at different levels of the construction process.
This paper will demystify the misunderstanding. We will discuss what cement is, what concrete is, and what is the crucial role the legendary mixer truck plays in providing the linkage between the two.
In order to comprehend the truck, it is necessary to comprehend what is transported in the truck. The easiest example is to imagine the process of baking a cake.
The flour is cement: Cement is a gray fine powder. It is a binding material, which, though, is produced in a complicated process of heating limestone and clay in a kiln, and then reduced to a fine powder. Cement powder can be considered weak on its own, and cement does not have much application. It is only a part of a bigger recipe.
Concrete is the cake: Concrete is the last, solid, and sturdy construction material. It is a compound material that is composed of the mix between cement and other components such as water, sand (fine aggregate), and gravel or crushed stone (coarse aggregate).
Adding water to the cement triggers a chemical process known as hydration that leads to the hardening of the mixture and cement holds the aggregates together making it form a rock-like substance. This is concrete. Thus the truck is transporting the last, complete, mixture, the cake, rather than the flour – cement only.
It is officially known as a transit mixer and all the design is aimed at a single activity in that the ready-mix concrete needs to be moved out of a batching plant to a job site without the concrete ever becoming solid.
The largest characteristic is the big, sloping drum. This is not just the container, but an active concrete mixer of the drum. A series of spiral blades are inside the drum. The rotation of the drum makes the difference:
1. Clockwise Rotation (Mixing): Once the drum turns clockwise, the mixture is picked as the blades combine the concrete and thoroughly mix it, leaving it with a uniform mix of cement, water and aggregates all the way it goes to the site.
2. Counter-Clockwise Rotation (Discharging): To discharge the load, the drum will rotate in the reverse direction. The spiral blades hence become like a screw, forcing the mixed concrete out of the drum and into the chute.
And yet what is the reason why it has to spin all the time?
The pot life of concrete is short. When the mixture stays longer than necessary without moving during transportation, the hydration process will occur leading to the stiffening of the concrete and its segregation (the heavier aggregates will sink to the bottom). This is prevented by constant rotation ensuring homogeneity and workability. Without a means to keep the drum turning continuously, the concrete may start to dry out and this creates an expensive and troublesome scenario referred to as a hardened load.
This is referred to as the ready-mix concrete industry because it is carried out by the concrete truck. It is a very well-orchestrated affair:
This system guarantee that quality and well mixed concrete is available to the contractor when required, and this is important to the stability of any construction.
You may also think that the explanation of telling a person about the difference between cement truck and concrete truck is merely scholarly. Although it is a fact that majority of them will know what you are saying, exactness in words is very important in business matters.
Clarity and Professionalism: In a construction site, the right words should be used, otherwise there would be a misunderstanding. A cement order would bring you a bag of powder and a concrete order would bring you the ready-to-pour mix that is brought by a truck.
The Craft: The use and correct nomenclature reflects that someone has a better understanding of the industry and the (complicated) science behind the materials that make our world.
Thus, the following time that big, drum-filled truck goes past, you will be able to recognize him. It is not just any cement truck, it is a technologically advanced, mobile factory on a wheel, a concrete truck that brings the most multi-purpose and ubiquitous construction material in the world.
You are welcome to ask and place orders regarding the SINOTO cement spreader trucks and self-loading concrete mixer trucks.
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