Crushed Concrete |
When
structures made of concrete are demolished or renovated, concrete
recycling is an increasingly common method of utilizing the rubble.
Concrete was once routinely trucked to landfills for disposal, but
recycling has a number of benefits that have made it a more
attractive option in this age of greater environmental awareness,
more environmental laws, and the desire to keep construction costs
down.
Concrete aggregate collected from demolition sites is put through a
crushing machine. Crushing facilities accept only uncontaminated
concrete, which must be free of trash, wood, paper and other such
materials. Metals such as rebar are accepted, since they can be
removed with magnets and other sorting devices and melted down for
recycling elsewhere.
The remaining aggregate chunks are sorted by size. Larger chunks may
go through the crusher again. After crushing has taken place, other
particulates are filtered out through a variety of methods including
hand-picking and water flotation.
Crushing at the actual construction site using portable crushers reduces
construction costs and the pollution generated when compared with
transporting material to and from a quarry. Large road-portable plants
can crush concrete and asphalt rubble at up to 600 tons per hour or
more. These systems normally consist of a rubble crusher, side discharge
conveyor, screening plant, and a return conveyor from the screen to the
crusher inlet for reprocessing oversize materials.
Compact, self-contained mini-crushers are also available that can handle up to 150 tons per hour and fit into tighter areas. With the advent of crusher attachments - those connected to various construction equipment, such as excavators - the trend towards recycling on-site with smaller volumes of material is growing rapidly. These attachments encompass volumes of 100 tons/hour and less.
The products and services provided by A1-SandRock, Inc are provided with the up-most quality and delivered in a timely fashion. Contact Us with any question or for further information.
