Hello everyone. I am remodeling my detail shop. I am wanting to do my walls in concrete for looks. My plan is to make some 4'x8' molds to pour in and just hang it like Sheetrock once its cured. My question is can this be done, what would be the best concert to use, how thick should I make the sheets? Any advice would be greatly appreciated.

It's more common to use stucco for a thin layer and tilt-up for structural walls. But if you want to do it, then perhaps look at concrete counter-tops for thickness and mix. Probably with glass fibers.

I thought about using stucco. But I didn't know if I could get it to look right. It will be going over wood paneling and won't be holding any weight. I've read up on the counter tops. It's saying anywhere from.5 inch and up. A half inch just sounded kind of thin to me though.

A local builder built a form on the ground in front of the house, laid in stones, poured concrete, hired a crane & tilted it into place. The stone facade has looked great for 40 years, but I know none of the details.

My bad everyone. This is for my interior walls. I don't know how I forgot to mention that part. I am after a raw concrete look on the inside of my garage walls.

Another option is 1/2" Durock cement board screwed to the walls, then covered with surface bonding cement or fiberglass reinforced one coat stucco mix or EIFS synthetic stucco mix.

http://www.lowes.com/pd/DUROCK-Brand-0-5-in-x-36-in-x-60-in-Cement-Backer-Board/3265973

https://www.quikrete.com/productlines/quikwallsurfacebondingcement.asp

https://www.quikrete.com/productlines/stuccoonecoatfiberglass.asp

You can do shot-Crete walls but I think it would pretty expensive to do that just for looks. Really though anything to accomplish what you want will not be cheap. Milestone, stucco, or plaster come to mind and something like that is probably your best bet. Or build a tilt up building.

i used a grey venetian plaster and flat trowel burnished, looks just like smooth concrete

Have you looked at PlasterMax? Very high PSI and fire rated.

Yes, I agree with Alton try for PlasterMax.