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Engineer turns plastic into bricks that are reportedly stronger than concrete

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Re: Engineer turns plastic into bricks that are reportedly stronger than concrete

#151

Earlier quoted context omitted.

Or the carbon added to the air. Cars are... not good for the environment.

Electric cars powered with renewables solves that problem somewhat.

Yes, noting the "powered with renewables" aspect.

and keeping in mind that any 1 ton plus vehicle is going to take substantial energy to move around (vs, say, an ebike).

Re: Engineer turns plastic into bricks that are reportedly stronger than concrete

#152

Earlier quoted context omitted.

I recommend reading this in Lucasarts gaming style text: Meanwhile deep in a laboratory somewhere deep in the Caribbean…… several scientists hell bent on solving the landfill problem work frantically on bacteria which are capable of breaking down plastics as their primary food source.

I imagine solving landfill problems with a plastic bacteria just compounding our problems: A 400m-wide hotpot of bacteria, some of it escaping, people being infected in their house, spreading to a few blocks, kids not playing together “because his toys have the disease”…

good opportunity for metal toys

Re: Engineer turns plastic into bricks that are reportedly stronger than concrete

#153
post #135

Looks like a story about someone trying to recycle plastic by using it as an ingredient in [polymer-concrete]( https://en.wikipedia.org/wiki/Polymer_concrete ). As for polymer-concrete's history ( https://www.sciencedirect.com/science/article/pii/B978184569... ): > The history of the research and development of polymer concrete is relatively short compared with that of conventional cement concrete. The early research…

> The history of the research and development of polymer concrete is relatively short compared with that of conventional cement concrete.

This history of most things is short compared to concrete.

https://en.wikipedia.org/wiki/Roman_concrete

Re: Engineer turns plastic into bricks that are reportedly stronger than concrete

#155

Earlier quoted context omitted.

Electric cars powered with renewables solves that problem somewhat.

Yes, noting the "powered with renewables" aspect. and keeping in mind that any 1 ton plus vehicle is going to take substantial energy to move around (vs, say, an ebike).

> take substantial energy to move around (vs, say, an ebike).

e-bikes are an alternative to cars the same way wheelbarrows are an alternative to trucks.

they are different means of transportation, for different purposes.

I don't own a car and I try to use cars as less as possible, but every time I need to use one, an e-bike would be useless.

When an e-bike could be useful, I can walk or use public transports.

Re: Engineer turns plastic into bricks that are reportedly stronger than concrete

#157
post #13

This is a great way to get microplastic through abrasion into even more places within the foodchain. Wonder if it burns nicely too, plastic after all is "frozen gasoline" - here mixed with sand. /debbiedowner

That's where my mind went first, too. We don't need more plastic in our lives, quite the opposite actually.

It’s already there though.

Re: Engineer turns plastic into bricks that are reportedly stronger than concrete

#158
post #34

Not so great. Plastic is going to be seen like asbestos in 50 years.

Which deadly diseases has plastic been linked with? Is the endocrine content of BPA any worse than drinking soy milk? Bioaccumulation of microplastics may be a different story. It may pose an inflammation risk, serve as a safe harbor for bacterial colonies, or be carcinogenic, but as far as I'm aware there haven't been any studies showing this.

Read up on phthalates.

Re: Engineer turns plastic into bricks that are reportedly stronger than concrete

#160
post #17

I bet sourcing all that sand will be a bigger problem than they expect as sand is a rare and nonrenewable resource that's heavily in demand for concrete and sourcing it has all sorts of environmental issues of its own. They should look into replacing that with something that's also cheap waste. Maybe crushed glass would work?

twenty-five percent of Africa is literally covered in sand. Sand comes in different granularity and compositions, but for concrete this is often irrelevant.

Uh, for concrete the granularity and composition is VERY important. In fact it's one of the most important parameters you can tweak in a concrete mix.

To the point that weird stuff like this happens quite frequently:

https://www.quora.com/Is-it-true-that-Saudi-Arabia-imports-s...

My local DIY store here in the UK carries some 8 different types of sand, all for different purposes.

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