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Jack Hammer, Jackhammer, Demolition Hammer Breaker vs Dexpan

Comparing to Jackhammer and other Demolition Equipments, Dexpan Non-Explosive Expansive Grout breaks concrete & rock easier, no noise.
 
A Pneumatic Drill or Hammer Breaker, Jack hammer is a portable percussive drill powered by compressed air. It is used to drill rock, break up concrete pavement, among other applications. Jackhammer works similar to a demolition hammer and chisel, by jabbing with its bit, not rotating it. (A drill driven by compressed air, which rotates its cutting bit is called an air-drill or familiarly, a windy-drill or rotary hammer.)
Jack Hammer, Jackhammer, Demolition Hammer Breaker vs Dexpan
Demolition Hammer makes too much noise and vibration. 
Dexpan is more effective to demolishing mass reinforced concrete & Rock.