What is the reason for bull floating a newly placed concrete slab?

The purpose of bull floating a newly placed concrete slab primarily revolves around achieving a smooth and level surface. When concrete is first poured, it is often uneven and may contain surface irregularities. Using a bull float helps to push down larger aggregates, bringing the finer particles and cement paste to the surface, which not only improves the overall finish but also aids in creating an even texture.

This process allows for the distribution of the concrete mix, resulting in a more uniform slab. By leveling the surface, bull floating also helps reduce the likelihood of surface flaws in the finished concrete, which can be important for aesthetics and performance, especially in areas requiring high flatness standards.

While enhancing curing, embedding aggregates, and controlling evaporation are important factors in concrete work, they are not the primary functions of bull floating. The main focus during this step is on achieving a level and smooth surface, making it an essential part of the finishing process in concrete construction.