Should You Vibrate Concrete?
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- čas přidán 11. 09. 2024
- Vibrating concrete comes down to consolidation. Concrete consolidation is the compaction of a concrete or mortar with the reduction of air bubbles, hollow pockets or voids. The voids and honeycombing left by trapped air in hardened concrete make it weaker, leaving it prone to early failure. A good consolidation and compaction of the concrete mix makes for a strong finished product.
A concrete mix that is watery makes placement and consolidation very easy. But too much water makes a weak finished product. A strong mix is more like the consistency of damp sand which does not flow around easily for good consolidation. Vibrating the concrete allows the mix to fill all of the small spaces and helps bring air bubbles to the surface. Removing the
A superplasticizer, or water reducer, could be added to a concrete or mortar mix giving the effect of adding a lot more water without compromising the finished strength of the concrete. This type of concrete admixture makes placement and compaction a breeze but could still benefit from vibration to remove trapped air bubbles that can weaken the concrete. Whether using a thin mix or a thick, employing a consolidation method such as vibrating is one of the best ways to get better, stronger results.
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Very helpful! Thanks!
Question: should you also vibrate aircrete ? Wouldn’t you vibrate away all the bubbles ?