Concrete Grinding and Polishing Tips- Presoaking a hard-trowel slab

Presoaking a very hard-trowel slab will help reduce surface tension as well as flush small aggregate and sand to the surface which can make the grind a little easier. Contractors can presoak a hard-trowel slab to help grinding.

The aggregate and sand will act as a secondary abrasive and rough up the diamond matrix to help grinding efficiency.

Beside, presoaking will also reduce the temperature of the concrete surface, helping with operational temperatures of the tooling.   

Sometimes what appears to be a hard-troweled slab is really a tight slab with thin layers of cure and seal. This type of sealer can glaze a tool, causing it to heat up. The sealer can be removed with play sand and water.

In a word, presoaking a hard-trowel slab can save your time and grinding more efficiency.