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Rubber "sand" What to do with it?

They market the stuff for installing around playground equipment. It's shredded tires. I got a load free.

I plan to use some for backfill in a spot which was very rough to dig out. But I'll have leftovers.

Can I vulcanize it into solid rubber? How?  Mix with concrete to make it lightweight? Or will thermal changes cause rubber to expand /contract too much?   What else could be done w/ it?  

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Toga_Dan (author) 2 years ago

ended up gluing some on surface of a plywood ramp.

0) wash rubber sand. allow to dry.

1) wirebrush the wood

2) sweep

3) spread vinyl flooring adhesive with a notched trowel.

4)sprinkle rubber sand

5) press it in

6) allow to dry for a day or more

7) sweep loose rubber sand off.

Toga_Dan (author) 2 years ago

Grippy surface on a ramp. Spray adhesive , then toss down some rubber bits. I think That's 1 thing I'll do. I washed a quantity of this material today. About 1/3rd seemed to be sand and dirt. Rubber sand sinks in water, while grass clippings and some dirt float. Pouring water off removes dirty water. Then the sand settles below the rubber "sand"

Use the leftovers for an art project. Maybe you could glue the rubber pieces to a board and spray paint them to make a cool design.

Triclaw3 years ago

glue it to gloves for a super grip

Qcks3 years ago

Like kiteman mentioned, it's already vulcanized, but, what matters is the degree of crosslinking in the polymer. If the rubber is soft, you might be able to press it into a form and then bake it for a short time to get a shape. The trick here is getting things to come into close enough proximity that you get a chemical reaction.

If the stuff is nothing but hard crumbles, you still might be able to use it, but it depends on the amount of sulfur in it after the fact. If there's lots of Sulfur, you can use it as a crosslinking agent, providing the source of sulfur necessary to make more rubber from raw latex. You can occasionally buy raw latex at the store, but there's a number of plants that produce it. milk weed is a good source of fairly high quality latex.

As a final bit, you might be able to burn the stuff to obtain benzene compounds and sulfur dioxide. Benzene is kinda meh, but sulfur dioxide has some distinct uses.

Kiteman3 years ago

It already is vulcanised, so will not melt, just burn.

I'd be tempted to mix some with glue and make tyre-treads on a pair of cheap high-tops. or even completely cover them in the stuff, just because.

Toga_Dan (author)  Kiteman3 years ago

I like the idea of a composite. rubber bits + glue...

It makes a great mulch. In fact they also sell it as mulch. Pluss side it it won't biodegrate so you don't have to re mulch around your trees and bushes.