an emergy life-cycle analysis on recycling revealed that fly ash, aluminum, recycled concrete aggregate, recycled plastic, and steel yield higher efficiency ratios, whereas the recycling of lumber generates the lowest recycle benefit ratio. hence, the specific nature of the recycling process, the methods used to analyse the process, and the .
reinforced concrete contains rebar and other metallic reinforcements, which are removed with magnets and recycled elsewhere. the remaining aggregate chunks are sorted by size. larger chunks may go through the crusher again. smaller pieces of concrete are used as gravel for new construction projects.
history. in 1877, joseph monier, a french gardener, suggested that concrete reinforced with steel could be used for making sleepers for railway track.monier designed a sleeper and obtained a patent for it, but it was not successful. concrete sleepers were first used on the alford and sutton tramway in 1884. their first use on a main line railway was by the reading company in america in 1896 .
on site crushers allow the demolished concrete to be reused as type 1 crushed aggregate either as a piling mat for ground stabilization or as aggregate in the mixing of concrete. timber waste can be shredded using specialist timber shredders and composted, or used to form manufactured timber boards, such as mdf or chipboard.
processing for sale. the sorted post-consumer pet waste is crushed, pressed into bales and offered for sale to recycling companies. colourless/light blue post-consumer pet attracts higher sales prices than the darker blue and green fractions. the mixed color fraction is the least valuable. further treatment
zanker recycling, owned and operated . the concrete plant was one of the first in the nation to convert concrete debris into aggregate products, suitable for foundations and road construction. the recycling process beings with incoming clean concrete and reinforced concrete, where they are unloaded at the site. the cleaned concrete is loaded into a crusher, where the material passes under a .