9 building materials made entirely from waste products

No doubt an architectural treasure trove. Image: Cezary p at Wikimedia Commons.

Building with Waste, a new book about, well, you can guess, may not sound like it should top your holiday reading list – but, construction geeks as we are, we found its premise fascinating. Every year, human settlements produce 1.3bn tonnes worth of solid waste products. The book argues that we could and should be putting this to good use as cheap, durable and green building materials. 


Compilers Dirk E. Hebel, Marta H. Wisniewska and Felix Heise looked into the worlds of architecture, construction, and the delightfully named field of "garbology" to find new and exciting materials made out of stuff you'd normally find at a landfill site. Their book argues that, in future, we could end up re-using pretty much everything, as we did back when all waste was organic.

This could come in handy if, as is predicted, our municipal waste output doubles by 2025. As Mitchell Joachim, one of the book's contributors, puts it:

The future city makes no distinction between waste and supply. 

So, from animal blood bricks to nappy roofing, here are our favourite waste-based materials featured in the book. 

1. NewspaperWood

Image: ViJ5.

This design comes froom Norway, where over 1m tonnes of paper and cardboard are recycled every year. The wood is created by rolling up paper and solvent-free glue to create something not dissimilar to a log, then chopping it into usable planks. The wood can then be sealed so it's waterproof and flame-retardant, and used to build anything you would normally build with wood. 

2. Nappy roofing

Image: Lightweight tiles ltd.

Good news: something can be salvaged from all those nappies and sanitary products we throw away, even though they're, well, really gross. Special recycling plants separate out the polymers from the, er, organic waste, and these polymers can then be used to ceate fibre-based construction materials like the tiles in the image above. 

3. Recy blocks

Image: Gert de Mulder. 

These colourful bricks are made from old plastic bags, which are notoriously difficult to recycle in any other way. Recycled bags or plastic packaging are placed in a heat mold, and forced together to form the blocks. They're too lightweight to act as load-bearing walls, but can be used to divide up rooms or outdoor areas. 

4. Blood Brick

Image: Jack Munro.

This idea rests on the assumption that animal blood counts as a waste product. This, we realise, is a potentially offensive idea – but while carnivores are still munching away, they're still wasting loads of animal blood, especially in societies without industrialised food production systems. And, as it turns out, blood is one of the strongest bio-adhesives out there, as it contains high levels of protein. 

British architecture student Jack Munro proposes using freeze-dried blood (which comes as a a powder), mixed with sand to form a paste; this can then be cast as bricks. This could be especially useful in remote communities, where blood from animal slaughter is plentiful, but strong construction materials are thin on the ground.

5. Bottle bricks 

Image: Aaron "tango" Tang via Flickr. 

This proposal is a little different, as it relies on producing a consumer good specifically so it can later be used as a building material. Lots of companies now make bottles in cuboid or other tesselative shapes, to make them easier to transport.

But the practice of doing so to create construction materials actually started with beer company Heineken in the 1960s – Alfred Henry Heineken, owner of the brewery, visited a Carribean island and was dismayed at both lack of shelter, and the number of discarded Heineken bottles scattered everywhere. So the company landed on a new, brick-shaped design for the bottle, shown in the images above. The bottleneck slots into the base of the next bottle, forming an interlocking line. 

6. Smog insulators

Image: New Terrirories/City of Bangkok.

One of our biggest waste receptacles is the air, which isn't great for our lungs, or for the human race's chances of survival on a planet that's rapidly getting hotter. "Dustyrelief", a system created by the City of Bangkok and design firm New-Territories, involves placing an electrically charged metal mesh over a building, which attracts large smog particles and sticks them together. Eventually, this creates a kind of silvery fur over the building's surface. Not particularly attractive, perhaps, but much better than a similar shag forming on the insides of your lungs.

7. Mushroom walls

Image: Evocative designs.

Here, designers figured out a way to grow wall insulator and packing materials using mycelium, a bacteria found in rotting organisms like tree trunks and agricultural byproducts. If placed in a mold, these organic matters grow to the desired shape within a couple of days, and can then be stopped using a hot oven. This is particularly useful because traditional insulating and packing materials tend to be non-biodegradable, or, in the case of asbestos, poisonous.

8. Plasphalt 

The bit on the left is plasphalt, the bit on the right is asphalt. Image: TEWA.

OK, yes, we mostly like this one for its fun name. Plasphalt is made up of grains of plastic produced from unsorted plastic waste, which replaces the sand and gravel traditionally used in asphalt production. In testing, it was found that plasphalt roads were far less vulnerable to wear and tear than traditional asphalt, because the asphalt emulsion bonded better with the plastic than with gravel or sand.

9. Wine cork panels

Image: Yemm & Hart materials.

These wall or floor tiles are made by combining recycled granulated cork with whole wine corks, which you can see as those oblong shapes in the tiles above. This is a pretty useful idea, considering the world apparently consumes around 31.7bn bottles of wine a year. For shame.

 
 
 
 

“Ministers are ignoring the people who’ll deal with the fallout from Brexit”: The case for a second referendum

Everything is fine: Prime minister Theresa May and Liverpool mayor Joe Anderson. Image: Getty.

We’ve come a long way from the days when Brexiteers promised a free trade utopia and an £350m a week to spend on our NHS. Now we have David Davis reduced to warning there will be no Mad Max-style scenario when we leave the European Union.

Anyway, how do we know? The Brexit Secretary refuses to publish his economic risk analysis so we can have an informed discussion about the effects on cities like mine. What evidence has trickled out of his department shows that the UK economy will take a hit – and the further you are away from Greater London, the harder that punch will feel.

At best, with retained access to the single market, we will take a 2 per cent hit to GDP over the next 15 years. At worst, with a so-called ‘Hard Brexit’, this increases to 8 per cent.

That’s hundreds of thousands of jobs taken out of the economy. Moreover, we know the impact will be felt unevenly. The further away you are from London and the South East, the deeper the effects.

This week, leaders of some of our major Core Cities met Michel Barnier, the EU’s chief negotiator, to explain our worries. Our cities are potential engines of growth and vital players as we insulate the country from Brexit-related shocks. We are trying to play a constructive role – whether or not we agree with Brexit – because we are on the ground and left dealing with the fallout.

So far, ministers have refused to meet us. We are apparently frozen out of the conversation because our reality-based concerns do not fit with the government’s celestial belief that things will be all right on the night.

As a local government leader, I deal in pragmatic solutions. (Having lost two-thirds of our Government funding since 2010, I have no choice.) But ministers need to come out of their bunker and talk to us about the support we need and the part we can play in preventing a recession when we leave the EU.


There is only one way to interpret their reluctance to do so. They know that we are on course to take an economic shellacking, and are preparing to leave us to it. They have done nothing to reassure us that a dystopian nightmare does not await – with Britain reduced a low-tax, low regulation fiefdom, with neo-liberal hardliners taking a red pen to the social and environmental protections currently guaranteed by EU law.

This is not acceptable. It is a total betrayal of those parts of the country already struggling with a decade of austerity and all the uncertainty generated by the Brexit process. But ministers should care because if we suffer, then Brexit will have demonstrably failed.

It will come as little surprise to Scousers. Liverpool voted 58 per cent to Remain back in June 2016. That’s because we felt the practical benefits of being in the EU. Europe was there for us – especially in the 1980s – when our own government wasn’t.

Objective One and other regional funding streams helped bring Liverpool back from the dark days when ministers in the Thatcher Government were seriously contemplating writing us off entirely. ‘Managed decline’ they called it. We were to be left to fend for ourselves.

But Europe allowed us to begin a ‘managed renaissance,’ becoming the modern, optimistic and dynamic city we are today. EU funding helped us to bounce back and catalysed many of the dramatic changes we’ve seen over the past few years.

If leaving the EU now results in a harsh economic winter, then the pendulum of public opinion will swing back the other way. So it’s actually in the interests of Brexiteers to have a second vote on the terms of our departure.  Asking the public if they approve of the deal ministers will have negotiated, is entirely justified. Call it a confirmatory ballot, or a cooling-off vote.

This is not about keeping asking the same question until the political elite get the answer they want. It is about giving the British people sign-off on how the country will be governed after 2019 and the effects that will have on their lives.

It’s ridiculous that we have more opportunity when it comes to cancelling our car insurance than have when it comes to reflecting on the biggest change to Britain’s economic and political fortunes in any of our lifetimes.

If – after knowing the full facts of what we face on the outside – the British public still voted to leave, then I would accept their decision with no further protest – and so should everyone else.

But it is right to ask them.

What is not acceptable – or credible – is to ignore reality and refuse to deal with the very people who will be left to pick up the pieces.

Joe Anderson is the Labour mayor of Liverpool.