What helps increase concrete strength according to the vibration process?

The vibration process in concrete construction significantly enhances the strength of the concrete primarily by improving bond and density. When concrete is vibrated, the action helps to eliminate air pockets and achieve a denser material. This denser mix ensures that the cement particles are closely packed with the aggregates, creating a stronger interlocking structure. As the vibrations help the mix settle and compact, the result is a more uniform distribution of materials, leading to increased overall strength.

The improved bond occurs because the vibration aids in the thorough mixing of the components, allowing for better adhesion between the cement, aggregates, and any reinforcements, such as steel rebar. A well-compacted and homogeneously mixed concrete will inherently possess superior strength attributes due to reduced porosity and improved structural integrity.

While other options may imply certain aspects of concrete mixing and formulation, none are as directly related to the benefits of the vibration process specifically designed to enhance strength through increased bond and density.