Machine-mounted hydraulic impact hammers and concrete crushers both demolish concrete methodically and efficiently. Using them effectively and economically, however, requires knowing which type of demolition tool is best for the job, what size tool is needed, and how to properly match tool to excavator.
Excavator-mounted hammers can have production rates of more than 1,100 cubic yards of unreinforced concrete per day. Productivity varies depending on a variety of factors including type of concrete, accessibility, and operator skill. In addition to demolishing concrete, many hammers can be fitted with special tool shapes that allow them to drive piles and sheeting, compact soil, edge trenches, penetrate frozen ground, and cut asphalt.
Hydraulic crushers, also called smashers, densifiers, processors, secondary crushers, and pulverizers, reduce concrete into manageable pieces. In addition, they often are used to separate reinforcement from concrete and to reduce concrete into smaller, recyclable pieces. Some crusher models feature interchangeable jaws that allow the attachment to be used more efficiently, including: concrete cracking jaws, shear jaws, and pulverizing jaws. In addition, various types and configurations of jaw teeth can be used to optimize the crusher for the job.