Backfilling With Lightweight
Aggregate
Contractors enjoy practical experience of a
different application with TXI's rotary-kiln lightweight aggregate.
Staff - Texas Contractor, 5/16/2005
Compared to pea gravel, TXI’s rotary-kiln lightweight
aggregate proves to be a much more cost-effective and
reliable solutions for granular bedding and backfill
material needs. More than 2,300 cubic yards of aggregate
was used in approximately nine miles of underground
electrical and mechanical work, including embedment for
buried electrical cables, water and sewer lines; and
backfill for grade beams. Of particular note, the aggregate
was used to backfill large underground electrical duct
banks, measuring 2 feet to 7 feet wide by 4 feet to 7 feet
deep that run electrical conduit under a building's
foundation. Contractors benefited greatly from the added
bonus of cost savings found with using the lightweight
aggregate material compared to pea gravel, which has been
historically used as a backfill and embedment material in
Texas utility construction.
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