Rubbish polystyrene.

Polystyrene is a waste that is very troublesome, large volume small weight.
They had to fix a piece of the wall for me and I had a large pile of polystyrene for disposal. After all, after experimenting with acetone, gasoline and others, I normally took it out in garbage bags in installments.
It is simply not profitable to dispose of polystyrene, it is easier to produce a new one.

The polystyrene dissolves in acetone, gasoline and xylene is probably the best (I do not recommend smelling it). It also dissolves in acids or organic oils. Probably Sony used to dispose of its polystyrene collected from customers in the liquid orange peel. This is why a Styrofoam cup with hot tea can melt when you add lemon.

There are also companies that grind and add to concrete. Some other company, sprayed in attics and crushed as insulation. It can also be found in chipboard countertops.

It is not such a linden tree, grind and use as a filling, for example, under the floor on joists, plasterboard walls, etc. Contrary to appearances, it can be used in many different ways.

Years ago I used ground cork as insulation (popular in Germany).

After grinding, treat gently with a mist of acetone before putting into the mold. Press gently in the form. In my time, I ground the waste in an old empty cell with an electric lawn mower . I applied the acetone with a spray gun already in the form. Obviously granule layer / solvent spray. So applied with the hill on it is the top mold plate and a few bricks. The facade was not toto but it worked between the sheet metal and OSB in the garage.

The plaster could be impregnated with polystyrene dissolved in gasoline.
I used to do such tests.
It should be waterproof.

Maybe it is worth making a varnish for wood from such rubbish polystyrene, maybe even pcb?

bearq wrote:

Maybe it is worth making a varnish for wood from such rubbish polystyrene, maybe even pcb?

Expanded polystyrene dissolved in nitro is commonly used in modeling, e.g. to impregnate the plating of flying models. Kisses

I found it on the Well-known Auction Portal - the price is about PLN 50 / m3.
Trade name: Styrofoam regranulate and such a low price prove that it is a re-use of polystyrene.

Fragment of the description from the auction:
Perfect for making "styro-concrete" warm screeds
Regranulate has many application possibilities, including:

- for filling voids and gaps in walls by blowing in
- insulation of the floors between the joists
- as an admixture to the so-called warm spouts
- for filling empty spaces in cardboard boxes
- for filling pouffes, seats and mattresses
- loosening the soil by mixing regranulate with the soil, maintaining adequate aeration and soil moisture
- pillows and mattresses
- ventilated flat roofs,
- spaces above suspended ceilings,
- diaphragm walls with an air gap,
- joist floors,
- spaces behind plasterboards,
- other closed spaces in buildings.

And that's why I like Elektroda - on any other website someone who would post this movie would get thousands of "likes".
Here, instead of likes, there was a slight "rebuke" and the others are already looking for how to use the waste.
And let someone tell me that Poles are not a creative nation!

Creative - yes. Economic - less.
We like to come up with makeshift stuff, but we don't want to do it neatly and systematically.

Madrik - after all, there is nothing more permanent than a makeshift!

Yes - but at the same time it never works as it should.

Gentlemen, no matter how many colored squares you have, you are having a pointless discussion, completely off topic.

I have described my experiences with the pile of built-up polystyrene. Colleague @ Konsument1 probably also has dirty polystyrene, i.e. the proposals to add to the screed, add to the ground are interesting solutions. Something that has already got wet, is overgrown with algae is unlikely to be thrown into the pouf.

Hello

In Southeast Asian countries, polystyrene balls are used in stagnant water tanks in households. They constitute a barrier against the development of mosquitoes.

You can use small pieces of polystyrene as filling for packages, I did that myself.

The remains of polystyrene dissolved in, for example, nitro, make a very good impregnation for concrete (more dense) and for wood (thinner). This impregnation is non-flammable after drying (I checked). I painted a piece of the pavement. He wintered and he's fine. I am going to paint the terrace instead of the falling off tiles. I am still looking for information on how to tint such an impregnant.

trzebor wrote:

From the remains of polystyrene dissolved, e.g. in nitro, a very good impregnation is made for concrete (more dense) and wood (thinner). This impregnation after drying is non-flammable (I checked). I painted a piece of the pavement. He survived the winter and he's fine. I'm going to paint the terrace instead of the tiles falling off. I am still looking for information on how to color such an impregnation.

Buddy, can you share your experience with using such an impregnation for concrete? I also have some styrofoam and a terrace to insulate. What density, performance, etc?