What Causes Air Bubbles in Concrete?

The air voids are caused by air trapped between the mold surface and the concrete. They generally appear in low slump concrete and can be found underneath irregular (non-spherical) shaped pieces of crushed aggregate. This is a result of having too little mortar to fill the spaces around the aggregate.

What Causes Air Bubbles in Concrete?

When concrete is in its liquid state, it is full of microscopic air bubbles. As the concrete sets and hardens, these air bubbles are trapped inside the concrete.

When the concrete is finally dry, the air bubbles are still there, just trapped inside the concrete. The trapped air bubbles can cause a number of problems with the concrete.

The most obvious problem is that the air bubbles make the concrete weaker. The air bubbles act like tiny little holes in the concrete, and over time the weight of the concrete can cause the bubbles to expand and the concrete to crack.

The air bubbles can also cause the concrete to discolor. The trapped air bubbles reflect light in a different way than the concrete around them, and this can cause the concrete to have a mottled appearance.

The good news is that there are ways to avoid air bubbles in concrete. One way is to use a vibrating tool when you are pouring the concrete.

The vibrations help to release the air bubbles from the concrete. Another way to avoid air bubbles is to use a highquality concrete mix.

The better the quality of the concrete mix, the less likely it is to have air bubbles. If you do find air bubbles in your concrete, there

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