Hey there, future builders! Have you ever wondered how sidewalks, bridges, and buildings stay so strong? It all starts with a little something called cement—but wait! Before we get our hands dirty, let’s clear up a little mix-up (get it?): Cement and concrete are NOT the same thing!
Cement vs. Concrete: What’s the Difference?
People often use the words “cement” and “concrete” as if they mean the same thing, but they don’t. Imagine calling a cake “flour.” Sounds weird, right? That’s because flour is only one ingredient in a cake, just like cement is just one ingredient in concrete!
- Cement is a powder made from limestone, clay, and other minerals (that start as big rocks and get crushed into powder).
- Concrete is a mix of cement, sand, gravel (tiny rocks), and water. Once it dries, it turns into the tough, rock-hard material we see in roads, sidewalks, and buildings.
Another way to think about the difference between cement and concrete is that cement is dry, and concrete is wet!
Are Cement Trucks and Concrete Mixers the Same?
Since cement and concrete are different things, you might think that a cement truck and a concrete mixer transport different materials, but that’s not true. In fact, a cement truck and a concrete mixer are two names for the same vehicle!
People often say “cement trucks” out of habit, even though the trucks transport concrete and not cement. Yes, there is cement in concrete, but it’s only one of the ingredients. Whether you call it a cement truck, cement mixer, concrete mixer or concrete truck, you’re right! The truck goes by many names, but they all have the same job: to mix concrete!
Why Do Cement Trucks Spin?
Cement trucks or concrete mixers (which you now know are two names for the same thing) have a rotating drum filled with concrete. The drum spins so it can:
- Mix Ingredients
Inside the rotating drum, the spiral blades mix cement, water, sand, and gravel, combining ingredients like food in a blender. Plus, the spinning makes sure there are no lumps or dry spots.
- Prevent Hardening
Concrete starts to get hard once it’s mixed. The constant spinning keeps it moving so it doesn’t harden before it’s poured.
- Pour the Concrete
At the end of the spinning drum, there’s a chute like a slide. When it’s time to build, the drum spins in the opposite direction and concrete comes pouring out of the chute to make roads, floors, bridges, tunnels, blocks, benches and more!
The Final Mix-Up (Pun Intended)
So, next time someone confuses cement and concrete, you can help them straighten it out. Just remember:
- Cement = Powder
- Concrete = Cement + Sand + Gravel + Water
Want to show your curious kid how these trucks work? DRIVEN cement trucks are just like the real thing, scaled down for hands-on play. Fill the drum, spin it, pour the mixture, and get building.
Choose between DRIVEN’s cement truck options, all with spinning drums and moving parts: