Re:Smart plastic incineration posited as solution to global ...
by ggm on Sunday August 18, 2019 @10:03PM
(#20734331)
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)
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)