Road Makers Turn To Recycled Plastic For Tougher Surfaces (economist.com)
Recycled plastic is already used to make some products, such as guttering and sewage pipes. Now attention is turning to roads. From a report: On September 11th in Zwolle, a town in the Netherlands, a 30-metre bicycle track made from 70% recycled plastic and the rest from polypropylene was opened [Warning: the link may be paywalled; alternative source]. It will be used to test a product called PlasticRoad, which is being developed by two Dutch firms -- KWS, a road builder, and Wavin, a firm that makes plastic piping -- in partnership with Total, a French oil-and-gas firm. PlasticRoad is prefabricated in a factory as modular sections. The sections are then transported to the site and laid end to end on a suitable foundation, such as sand. Because these sections are hollow, internal channels can be incorporated into them for drainage, along with conduits for services such as gas and electricity. For the Zwolle project, sections that were 2.4 metres long and 3 metres wide were used. These were fitted with sensors to measure things such as temperature, flexing and the flow of water through the drainage channels. A second pilot cycleway is being built in the nearby town of Giethoorn.
If all goes well, the inventors hope to develop the idea and make the sections entirely from recycled plastic. Paths, car parks and railway platforms could follow. Eventually, sections for use as actual roads are planned. These could contain sensors for traffic monitoring. In time, the circuits in the plastic roads might extend to assisting autonomous vehicles and recharging electric cars wirelessly. Prefabricated plastic roads should last two-to-three times longer than conventional roads and cost less, the companies claim, mainly because construction times would be reduced by almost two-thirds. Anti-slip surfaces could be incorporated, too, including crushed stones which are traditionally used to dress road surfaces. The sections, when replaced, can also be recycled. But engineers will be watching to see how the track stands up to wear and tear and if the hollow structure causes resonance, which would make such a road unduly noisy.
If all goes well, the inventors hope to develop the idea and make the sections entirely from recycled plastic. Paths, car parks and railway platforms could follow. Eventually, sections for use as actual roads are planned. These could contain sensors for traffic monitoring. In time, the circuits in the plastic roads might extend to assisting autonomous vehicles and recharging electric cars wirelessly. Prefabricated plastic roads should last two-to-three times longer than conventional roads and cost less, the companies claim, mainly because construction times would be reduced by almost two-thirds. Anti-slip surfaces could be incorporated, too, including crushed stones which are traditionally used to dress road surfaces. The sections, when replaced, can also be recycled. But engineers will be watching to see how the track stands up to wear and tear and if the hollow structure causes resonance, which would make such a road unduly noisy.
Where I live they tried adding mulched rubber tires to asphalt, this resulted in road surfaces that are less durable (more potholes) and the practice was abandoned.
How is this different?
This will DEFINITELY help with the 'mcroplastics in the foodchain' problem.
Sometimes there is no other option.
None, apart from re-using/refilling it.
No sig today...
This has been done with rubber (not plastic) on our estate in Milton Keynes, UK. When it's done properly it's basically un-noticeable and so far has worn extremely well. I can't imagine doing this with plastic as that's basically a bit stupid given the microplastics 'news' currently in the worlds focus
However there is food for thought - this stuff basically wears down as dust, and even if it does it slowly there'll be a lot granted, but dust is a lot smaller than your evil microbead problem, so much so that it's likely not a problem anymore at that scale.
Certainly brake pad dust would be more of an issue - how many tonnes of that gets put into the air? Some compounds used are *not* nice. and this certainly gets worn down faster, and on a far greater scale than a plastic road.
For those who can't see past the paywall, there are some pretty good images of the road sections here.
Check your premises.
The things of real consequence here are the cost savings and how well the road can stand up to heavy loads. If it doesn't perform well in those two areas then it will get limited use. It might be exactly what Zwolle wants, Hell it might even be great for all of the Netherlands but for widespread use, one must consider global applications.
Anons need not reply. Questions end with a question mark.
A 30-metres long bicycle track made in recycled plastic....
Wait, 30 metres?
Do you want to have flawed data? Because that's how you get flawed data.
Make it at least 3 kilometres long, otherwise all your data will be coming from basically the same exact spot.
#DeleteFacebook
Wouldn't worn down plastic end up in gutters, and from there into watercourses... and finally the sea?
"The Plasticman"
A lone venturer comes across a crashed plane containing a body wearing the uniform of the USPS (Uniformed Salsa Plastic Service) with a bag full of plastic water bottles.
He travels down a plastic road, weathered by erosion and sunlight, which chokes him to death before he can reach the town about to be destroyed by plastic beetles. So they die.
Everyone is happy in their plastic ruins.
The End
-- Tigger warning: This post may contain tiggers! --
Technically, this doesn't meet the strictest standards for "recycling". It's re-use, which is better than throwing away, and is casually called by many people "recycling", but it doesn't actually form a cycle.
Recycling should form a closed loop, with the molecules being recycled moving through the cycle over and over again. The idea is to mimic natural biological systems in which matter is reused over and over again with an input of energy and an output of entropy.
So the big question is: what happens to the road sections when they wear out or have to be removed? If they're processed into new road sections, then that meets the strictest definitions of recycling. Also, the fate of plastic particles lost to the cycle has to be taken into account. Recycling milk bottles to more milk bottles can be very efficient in terms of matter losses, but exposing a former milk bottle to erosion for a decade or longer is a different story.
Post may contain irony: discontinue use if experiencing mood swings, nausea or elevated blood pressure.
Recycling is the worst option of all.
1: Reduce
2: Reuse
3: Recycle
Recycling is not reusing. Recycling takes tons of energy to recover material from something and repurpose it. It often creates an inferior product.
They eventually want to make roads out of this product if it proves tough enough. Why not try and get driveways and some parking lots made from this instead? Then it doesn't have to put up with the heavy loads a busy road would put on it but still replace asphalt. Then as the product improves it can begin to replace roads.
It maybe a inferior product, but if it takes less energy to generate then starting from scratch you are still coming out ahead.
This is potentially a reasonable application for bikeways and paths, but it's a non-starter for roads. Their claim that adding plastic increases durability is simply nonsense. Road surfaces already contain quite a bit of plastic. Various polymers are mixed into the bitumen in a very controlled way to achieve a wide variety of different grades suitable for different duties, with different road bases, and different environmental conditions.
On a footpath where this stuff doesn't matter as much you can make the surface out of pretty much anything. On a bike path the road base is far more important than the final surfacing. However on an actual road with an actual vehicle load making blanket statements about the mixture and makeup of the materials is simply showing you have no idea what goes into making a road.
How is that not recycling?
Because classically, "recycling" means putting it back through industrial processes to manufacture a new item. The extended meaning of recycling to cover reuse, repair and repurposing inadvertently puts carbon-intensive collection and reprocessing of glass on an equal footing with not putting the glass in the bin at all and using it to store things instead of silly plastic Tupperware items.
Got them moderator blues I blieve I walk out the do', With these mod-points I been gettin', I 'most never post no mo'
It maybe a inferior product, but if it takes less energy to generate then starting from scratch you are still coming out ahead.
Many forms of recycling take more energy than working from raw materials. Such recycling is only commercially viable thanks to the high charges for landfill and dumping of used goods.
Got them moderator blues I blieve I walk out the do', With these mod-points I been gettin', I 'most never post no mo'
... by decades, and decades.
Many forms of recycling take more energy than working from raw materials. Such recycling is only commercially viable thanks to the high charges for landfill and dumping of used goods.
Care to point one, or a couple of them out?
I never have heard about such a thing, how should that be physical possible?
Cost free eBook I read (by iBook/Kobo/Amazon/ObookO/Gutenberg etc.): "The Green Odyssey" by Philip Jose Farmer.
It maybe a inferior product, but if it takes less energy to generate then starting from scratch you are still coming out ahead.
It almost never does. Recycling only makes sense when the material is rare or valuable, or when the method of recycling is dead simple and cheap compared to making new.
I'd say there's about an order of magnitude of importance between each of reduce, reuse, and recycle. .9% (or a whole 1%) of the focus being on recovering materials from the thing when its functional life is over, IF those materials are worth recovering.
That is, 90% of the focus should be on not using and wasting so much shit.
Then 9% of the focus should be on fully utilizing the shit you do use
With
But no - society expects you to buy a new iPhone every year. Lease (not even fucking buy) a new car every 3 years. How many people do you know who will spend a few minutes to stitch and mend clothing (or even know how to)? What about appliance repair or basic home maintenance?
One of the few things the hippies got right is that the disposable, consumption based society is fucking retarded.
I was going to give you a serious list of examples, but then I noticed your username.
Just in case OTHERS want to know, look at your county's website for recycling centers, then check them out and see what they won't take. Then search for "recycle" and those things. Plenty of products are created in such a way that it's too costly, or outright infeasible, to recover the materials. A classic example is a juice box. Cardboard, plastic, foil, and lots of glue.
Nevertheless the cardboard and the plastic gets recycled ...
Or do you mean a juice container? Made from the stupid mixture of cardboard and plastic? They actually get recycled, too. But into park benches and other silly stuff.
Cost free eBook I read (by iBook/Kobo/Amazon/ObookO/Gutenberg etc.): "The Green Odyssey" by Philip Jose Farmer.
No, they typically don't get recycled because of all the layers of different materials all glued together. It makes no sense to recycle them to recover the materials. Look it up. "Recycle juice box".
In the 90s, people started complaining about this packaging, and a few companies in the US started recycling them to prove that it could be done. Yet it's still not feasible to do so, and today most places in the US won't recycle them. If they take them they'll likely end up in a landfill. The most efficient thing to do with them is to burn them for heat or to produce electricity.
In Europe, they're recycled more often due to legislation requiring it. But that doesn't mean it makes sense from an energy, economic, or materials/resources standpoint. The standard process it to shred and boil it for ages to create a slurry like pulp, then chemically extract the metal and nobody cares about the rest. I guess you can make shitty paper based product out of it.
The leading manufacturer of this shit, Tetra Pak, has a goal of getting up to 40% of the things to be recycled by 2020. How are they getting to that number? By building a handful of facilities that can separate the layers (at great cost) and then telling other recycling facilities to fucking ship empty juice boxes to them. It's absurd.
Well, they are recycled. Just not to make new tetra packs from them.
However you are right, those things should be forbidden.
Anyway, the parent was more one of those wackos who claims that melting iron/steel costs more energy than melting ore. Or similar for glass. There are so many people here who thing melting bottles costs the same energy as melting fresh glass from sand.
Cost free eBook I read (by iBook/Kobo/Amazon/ObookO/Gutenberg etc.): "The Green Odyssey" by Philip Jose Farmer.
60 to 80% of them are NOT recycled in any way.
60% - 80% of what?
Of course it gets recycled, same for steel and aluminum. At least here in Europe.
Cost free eBook I read (by iBook/Kobo/Amazon/ObookO/Gutenberg etc.): "The Green Odyssey" by Philip Jose Farmer.