Papercreters: [papercreters] Re: extruded polypropylene as aggregate

Friday, June 11, 2010

[papercreters] Re: extruded polypropylene as aggregate

Good to hear your test results, I'm always interested in new mixes.

If you mean the standard packing foam, I believe that's polystyrene rather than polypropylene. Will your paddle mixer shred the foam if the blades are sharpened?

--- In papercreters@yahoogroups.com, "Jim J" <starwalkentertainment@...> wrote:
>
> I've done some testing with adding both EPS and Drywall. I've made a brick of both. They (both) seemed to work well as I used newsprint paper as the main ingredient. I placed both bricks on top of my wood stove to see the insulating quantities and the the EPS foam brick out performed the other by a lot! It doesn't have the compressive strength but for infill walls is going to be what I'm going to use!
> I'd like to find an easy way to grind up and use old packing EPS that comes in every box of electronics, coffee pots, etc. so this would be a great way to cut down on landfill space! For my test brick I used a blender but in large quantities??? Any ideas would be great!
> Jim J
>
> --- In papercreters@yahoogroups.com, "allan.buch" <ab.7470@> wrote:
> >
> > I have tried just putting EPS in the towmixer, together with standard
> > PC. You can easily use it. It will make lighter blocks with better
> > isolation values, but also softer.
> >
> > --
> > Mvh, Allan Buch, Danmark, mail: ab7470@
> >
> > --- In papercreters@yahoogroups.com, "ab72756" <ab72756@> wrote:
> > >
> > > I have just found a couple of tons of bagged extruded polypropylene that I can have for the hauling. I am getting it now but wonder what others think of using it instead of paper and what formula would be best to mix it for blocks and logs.
> > >
> > > Thanks,
> > > Bruce