Jackhammer outside my window

If my posts had titles, today's would be Jackhammer Outside My Window. Why hasn't someone invented a better jackhammer? How about a small disc that you stick to the surface you want to break up? You hit a button and it shoots powerful waves that break apart the concrete or asphalt, causing them to crumble silently into dust. That seems feasible, doesn't it? If you're an inventor, I give you free rein to develop my idea. Just remember me when you get rich, ok?