How to Grind Concrete With Angle Grinders? - Angle Grinder 101
Good hearing protection (a min NRR of 24 decibels) is needed since cutting and grinding concrete can emit a maximum of 104.8 dBA. Anti-fog safety glasses with wrap-around probably being a better choice. A portable heavy-duty vacuum cleaner with a sufficiently long power cord to roam around freely and a capacity of at least 8 gallons.