Straight answer - yes rolled unmalted grain! Would still need mashing though.
Most of it would be squished into the grooves of the bitumen though and turn it to flour.
Second comment would be right, first not so.
Rolled Barley, Wheat, Oats, Corn etc are steamed until soft then rolled while still so.
They would otherwise just shatter into tiny pieces.
Gentlemen, I refer you to the OP comment below.
If one could lay down a plate of steel then dump the grain on it, then flatten it, would it work?
Sorry Nige & Rav's, in your haste to make fun of of the OP you missed an important detail. I don't see how the grain would be in contact with the bitumen (apart from the very difficult to remove residue on the roller).
How would cracking it/rolling it turn it into flour? Depending upon your brewing system, perhaps a fine crush would improve your brewhouse efficiency? Does not Coopers crush their grist to flour-like consistency and reach +110% brewhouse efficiency?
And no one uses unmalted grains in their brew? Besides that, does 'raw' mean unmalted or unmilled? I am making a big leap of faith and assuming (you know what they say about that) that the OP may have meant unmilled.
Do you know of a steam roller used in roadworks? I thought they went out in the early 1900's? If my memory serves me correctly, it was that they were steam driven, not steam heated rollers? As far as I know, most these days are vibrating steel rollers, or just rollers with many tyres, I do not know of any that apply heat to the rollers. I am not a roads engineer though.
The practicality of the OP is however, ludicrous. For my money I would go for Ekul's 'Mans Mill'.
In contrast to this, I am of the opinion that FrozenCat is alright, despite being a Seppo he's married to an Aussie chick who's giving him the cold shoulder, cut the bro some slack. The OP is a crazy idea with little to no merit but hey haven't we all looked at industrial and construction stuff and said, hmmm I reckon there could be a brewing use for that?
h34r: I really ought to keep my fingers (and thus typed thoughts) to myself when tiddly.
Ha, ha ha, ha, HA!
:lol: