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Recycling plastic

11/16/2021 9:35 PM

Has anyone looked into using waste plastic to make building blocks? Like Legos they could snap together, glue or sealant optional. The type of plastic would probably not be important, separating types takes a lot of effort.

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#1

Re: Recycling plastic

11/16/2021 10:47 PM

Yes we were just talking about them, the blocks are already being produced...

EverBlock Modular Building Blocks - 12" x 6" Full Size Building Block Bulk Pack - 18 Blocks - White

About $8 apiece on Amazon....

About $3 in China...

more...

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#2
In reply to #1

Re: Recycling plastic

11/16/2021 11:25 PM
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#3
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Re: Recycling plastic

11/16/2021 11:45 PM

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#4
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Re: Recycling plastic

11/17/2021 12:00 AM

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#5

Re: Recycling plastic

11/17/2021 4:36 AM

It’ll be interesting how it would affect after weathering.

I know that they are adding a styrofoam type substance to concrete making it lighter, with nominal loss in strength. Called Polystyrene Concrete.

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#6

Re: Recycling plastic

11/17/2021 3:03 PM

So glad to see this, I had no idea it was happening! Why doesn't this show up in the news?

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#7
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Re: Recycling plastic

11/17/2021 3:58 PM

Looks like this is taking place mostly in South America...Here in America I think we look at homelessness as a temporary situation, so not much thought about permanent housing being built for a temporary situation...These also appear to be upgrading permanent housing situations which we see in the most poor neighborhoods in third world countries...It seems the most noticeable feature of these plastic brick construction projects is that very little skill or tools are required, this is not compatible with US building codes, you can't use an unapproved material for building...and the approval process can be quite lengthy, expensive and demanding....also I didn't see any prices other than the est of $5k for a small room, no comparison of conventional building material cost...

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#8

Re: Recycling plastic

11/17/2021 4:55 PM

Yeah, thanks, Solar Eagle. US building codes can keep this out of the US, but there's plenty of other places that need buildings. The price has to be brought down, I wonder if the price shown includes the manufacturing equipment. The plastic should be free, aren't recyclers paid to take the plastic? The plastic recovered from the oceans has to be recycled.

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#9
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Re: Recycling plastic

11/17/2021 5:22 PM

"What percentage of plastic is recycled in the US?

"In 2018, plastics generation was 35.7 million tons in the United States...,

While overall the amount of recycled plastics is relatively small—three million tons for a 8.7 percent recycling rate in 2018—the recycling of some specific types of plastic containers is more significant. The recycling rate of PET bottles and jars was 29.1 percent in 2018, and the rate for HDPE natural bottles was 29.3 percent in 2018.

The total amount of plastics combusted in MSW in 2018 was 5.6 million tons. This was 16.3 percent of all MSW combusted with energy recovery that year.

In 2018, landfills received 27 million tons of plastic. This was 18.5 percent of all MSW landfilled." Sep 30, 2021

From these figures we can see a lot of plastic produced goes unaccounted for...probably mostly dumped to the environment...

https://www.epa.gov/facts-and-figures-about-materials-waste-and-recycling/plastics-material-specific-data

https://plasticycle.com/?utm_source=hibu&utm_medium=cpc&utm_campaign=Plastic&gclid=CjwKCAiA7dKMBhBCEiwAO_crFE0ZljCfupx8iZmXZSdnokeRySvep6cXoFSGi6rfGMNEneb8toEVOxoC03oQAvD_BwE

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#12
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Re: Recycling plastic

11/17/2021 9:42 PM

With all this 'free' plastic out there . . . .

. . . . why is this stuff so EXPENSIVE ?!?!?!? (even before bidenflation )

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#13
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Re: Recycling plastic

11/17/2021 9:55 PM

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#10

Re: Recycling plastic

11/17/2021 8:31 PM

That's a lot of plastic, out of the ground as oil, or such, used once as some commodity, and then back into the ground as waste, or worse into the ocean. Is there any thing in the 'Green new deal' to use it? Does anybody in a position to do anything give a damn? Even if our building codes don't allow it, can't we send blocks to somebody who would use it as foreign aid?

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#11
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Re: Recycling plastic

11/17/2021 9:22 PM

Oh there's no shortage of people with idea's, there never is, the problem is that they mostly aren't practical or even possible...The main problem as I see it is that plastic is just not that valuable as a commodity, it's cheap to make, so the waste, even if it has some value, is just not worth the effort....IE: you can't make any money....that's why all these organizations are volunteer non-profit entities that are producing these odd shaped snap together bricks....the giant Lego's you see are $8 a piece...I can't see them selling a lot at that price....and they're probably hollow and clean and colorful and not from recycled plastic....They used to sell recycled plastic boards for use in decks and such...I guess they still do, but the plastic boards were expensive and would warp from what I heard...

https://plasticlumberyard.com/product-category/outdoor-furniture/

https://plasticlumberyard.com/product-category/lumber/molded/

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#14
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Re: Recycling plastic

11/17/2021 10:19 PM

Now let's look at the competition...

100 pots for $7...

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#15
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Re: Recycling plastic

11/17/2021 10:50 PM
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#16
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Re: Recycling plastic

11/18/2021 1:02 AM

Reminds me of a pedestrian bridge they built near mine recently.

They used some kind of composite as the foot traffic decking material. The bridge goes over a small creek where people fish. People who fish in the dark sometimes like a camp fire. Well someone lit a small fire on the bridge, and it turned into a seriously big one.

The bridge was out of action for a few months, and now has galv. steel decking/grating. Bit of a risk assessment failure on the part of whoever designed one.

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#17

Re: Recycling plastic

11/18/2021 3:27 PM

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#19
In reply to #17

Re: Recycling plastic

11/18/2021 3:41 PM

It's amazing how the same people who use the ocean as a source of income use it as a trash can. Who the hell eats eels?

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#20
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Re: Recycling plastic

11/18/2021 4:18 PM

I was born and brought up in the UK. We used to catch eels in the local river: I love them, much tastier than any other "fish".

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#25
In reply to #19

Re: Recycling plastic

11/20/2021 2:24 PM

Eel is delicious. It’s a great winter food, good for energy.

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#18

Re: Recycling plastic

11/18/2021 3:41 PM

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#21

Re: Recycling plastic

11/18/2021 4:28 PM

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#22

Re: Recycling plastic

11/18/2021 10:56 PM

The same could probably be done with waste plastic...

https://www.youtube.com/watch?v=qWBA-6NgIJg

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#23

Re: Recycling plastic

11/19/2021 7:37 AM

here's another concept
https://keyedbrick.com/

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#24

Re: Recycling plastic

11/19/2021 11:13 AM

In my opinion, there are two negative issues for using plastic in construction. First, is its tendency for creep under loaded conditions. Yes, it will last forever as long as the sun does not touch it. But, when subjected to long term loading, it will move, bend, twist, whatever. The other (less concerning issue) is that it is easily damaged during the construction process. There are factors to correct for these issues.

Pound for pound, steel and concrete perform so much better. But, that does not mean plastic cannot play a role in construction.

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#27

Re: Recycling plastic

11/22/2021 7:18 AM

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