3 ms·

It can also be incorporated into concrete to provide structure and fill volume

• jfim 7y ago
  Plastic particles will end up in drains when the concrete structure gets eventually demolished.
  • BubRoss 7y ago
    I think you will need a source for that, how often are plastic infused concrete structures being demolished? Why would more plastic end up in drains after being used in concrete? This seems like a nonsense dismissal.
    • ggm 7y ago
      No, its not. A huge amount of reinforced concrete is repurposed on-site to make aggregates for building. This means its destructively ground down in machines and the steel is usually removed for smelting. At this point, the plastic is going to be light chaff and will disburse. Concrete buildings have a 50 year life, but after 50, the concrete becomes aggregates, and this is going to liberate a lot of the plastic binder used. Binder in concrete is really good, it can help in earthquake zones and fire zones to keep building integrity, its also very possibly useful for penetrating shock events on concrete which some people face. So overall I think it is sound to use known quality plastic fibres in concrete for the additional strength, but we have to beindfull of full life effect: its good for now, it has consequence in 20-50 years time. (S.O proofreads civil engineering papers on GRP reinforced concrete, earthquakes and fire safety engineering)