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I am definitely not an expert, but I wonder if it would be viable to recycle plastic into bricks for construction?

It seems like wear would be less of an issue and the bulk properties of the resulting plastic would be emphasized.

One application I did see Precious Plastic recommending was producing long extruded plastic beams like 4x4 lumber. No idea how strong the beam was though.

I have seen hiking path way near water made from recycle plastic maybe 10+ years ago. Don't remember where now. Love to go back and check the durability of them after all these years. Curious about the cost also.

I used to live in an area where several dilapidated wooden paths were replaced with this tuff. I believe the main benefit was that they were supposed to never rot or warp, meaning that their lifetime mainentance cost was significantly lower than wood. I think for the most part they've all held up over 10+ years, but I have no idea if they've been leeching microplastics into the local wetlands.

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