Floating and troweling concrete too early in the curing process can cause:

Floating and troweling concrete too early in the curing process can bring excessive water to the surface, which can weaken the overall integrity of the finished slab. This phenomenon, known as "bleeding," occurs when water, which is part of the concrete mix, rises to the top due to the weight of the aggregate and the movement of troweling equipment.

When contractors begin to finish the surface without allowing sufficient time for the water to dissipate, they trap this water in the top layer, creating a weak surface that can lead to problems later on. This excessive water can lead to scaling or dusting on the surface as it evaporates and can affect the bond between the concrete and any overlays or sealants applied afterward. This surface defect compromises the durability and appearance of the concrete, making it crucial to wait until the appropriate time to finish the surface.

In contrast, options such as cracking, uneven surface finish, and improper adhesion are more closely related to other issues, such as improper mix ratios, inadequate or excessive finishing techniques, or poor curing practices, rather than directly resulting from bringing water to the surface too early.