The most common reason people get a rough surface is due to laitance. This happens when the concrete is troweled too early with the steel trowel.Aug 2, 2021
What happens if concrete is too sandy?
Since major force transfer in a concrete/mortar matrix is from sand-sand interaction, excess cement will turn the mortar very brittle since cement particles cannot transfer normal contact force - they are good at providing shear strength.May 30, 2011
How do you fix grainy concrete?
Fill the damaged areas with epoxy resin to the surface level of the surrounding concrete floor. Use a putty knife to fill the crack or hole in the concrete, and then level the top of the resin with the floor using the knife. Allow the patch to dry overnight.