Anyone know concrete mix design? - RC-Monster Forums

PBO · 04.07.2011, 05:58 PM

Blue metal is good stuff, I have it as my driveway...packs down nice & tight

You may have more luck with crushed slate? as the course

If you can source 'sharp' quartz sand, that would be my suggestion for the fine

pinkpanda3310 · 07:48 PM

Sorry I've been too lazy to read up on the rules. Soo what can you have as aggregate? The beads you were going to use is made of what? plastic? I know it said no epoxies but that was for the binding mix. To save a bit of weight how about pouring some epoxy into a thin sheet (3-5mm) then when it sets crush it into the size aggregate you want.

What are the chemical addmixtures you can use? I would be exploring that.

pinkpanda3310 · 04.07.2011, 08:33 PM

I had a quick look at the addmixtures. Maybe an accelerant would be beneficial. The strength of concrete runs like a parabolic curve, it quickly gets hard then spends a long time getting harder then spends a long time getting softer. If you can make the peak strength happen sooner...

Also you have no reo or metals in the cube so you can use higher rates of accelerant.

http://www.nrmca.org/aboutconcrete/cips/15p.pdf