What process is aimed at smoothing levels and preparing the surface for troweling?

The process aimed at smoothing levels and preparing the surface for troweling is floating. After concrete is poured, floating involves the use of a flat tool, often called a float, to bring moisture to the surface while leveling it. This step is crucial as it helps in eliminating imperfections and ensures that the surface is at the right height and smoothness before the final troweling, which further finishes the surface for aesthetics and functionality.

Floating is essential because it helps to compact the surface layer of concrete, reducing the risk of later defects such as cracking or unevenness, and it also creates a better bond for any toppings or coatings that may be applied later. This step improves the overall durability and appearance of the finished slab.

Screeding, while related to leveling, is specifically the initial leveling of the concrete surface to remove excess material and create a flat surface before floating occurs. Edging is a process to create a finished edge along the perimeter of the concrete slab and does not directly contribute to smoothing the surface for troweling. Bleeding refers to the process of water rising to the surface of freshly poured concrete, which is generally a sign of excess water or poor drainage, rather than a method for preparing the surface.