However, while a handheld hammer or sledgehammer are good for this ... though since it's a bit small, it is better for DIY-level demolition rather than contractor work. BLACK+DECKER 20-Volt Cordless ...

the Bauer Demolition Hammer absolutely pummels hard surfaces with 18 foot-pounds of impact power at 1900 BPM, ensuring whatever you point it at will be reduced to dust and small chunks in short order.