You can't always simply lay concrete and assume that you have created a strong and robust surface. Concrete needs a helping hand to set just right. Typically, you use concrete vibrators for this job. These machines shake the wet concrete. How does this help create a perfect finish?
Eliminate Air Bubbles
When you pour wet concrete, air bubbles form and sit in the material. They won't necessarily disappear on their own. Instead, they stay in place as the concrete sets.
These bubbles can affect the way the concrete's surface looks after it dries and cures. They make the surface rough and pitted. Bigger bubbles or air pockets under the surface can also create voids in the concrete. These open areas make the surface weaker. It is more likely to get damaged if its composition isn't solid all the way through.
A vibrator deals with these air bubbles and pockets. As it shakes the wet concrete, it drives out any air in the mix. Bubbles pop and voids fill in. With the help of this equipment, your surface will look better, and you won't have to deal with void damage later.
Create Better Bonds
If you're adding reinforcements to concrete, such as rebar sheets, then you need the concrete to stick to these structural supports as firmly and evenly as possible. If you just pour concrete onto the supports, then it might stick well to some parts and not so well to others.
If you don't get complete coverage here, then your concrete won't get all the support it needs. Air pockets and gaps around the supports weaken the material rather than add strength to it.
If you use a vibrator on the concrete when you lay it, then you encourage it to move all around the support sheets. The vibrations improve your coverage and force the concrete into all the right places. You get a more effective support structure embedded in the mix.
Mix Aggregates More Evenly
Adding aggregates to your concrete has benefits. An aggregate mix boosts the surface's strength and composition. It also helps prevent post-curing problems like shrinking and cracking.
However, you need to make sure that the aggregate in your mix is evenly dispersed. For example, if you have an area with a low aggregate content, then the concrete has less stability. It might shrink, crack or sink in that area.
A vibrator helps disperse aggregate more evenly in the mix. You shouldn't have places with aggregate voids or overfills.
To find out more, contact concrete vibrator suppliers.