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There are many surface treatments for unpaved roads to
keep the dust down. Most commonly salts, oils, or
other compounds that draw moisture into road surface.
Used coffee grounds should work just as well.
gravel road dust prevention
One comments suggests a way of reducing dust on a gravel driveway: " Slowly introduce fine organics, [...] coffee grounds, unwanted clay, mouldy leaf litter, grass clippings, maybe rake in a bucket a day here and there." [xaviergisz, Mar 29 2021]
Not roads, but grounds ground into deforested ground
[bs0u0155, Mar 29 2021]
Another use for coffee grounds in today's news
Coffee pulp anyway. [AusCan531, Mar 29 2021]
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||This is pretty widely Baked I'm afraid.
||Thats what I thought too - but cant find any
evidence for it. Find me a link that specifically
mentions using coffee grounds to keep dust down
on dirt or gravel roads, and Ill buy you a cup of
||Since I cant those references myself, I figure Im
either not using the right search terms or theres
something wrong with the concept. Maybe it
doesnt work or isn't cost effective?
||Fair point, they use it for de-icing/grip on slick roads. For dust control,
wouldn't the coffee itself just dry out and add to the dust? What
properties are you thinking would make it better than oil or water being
||Coffee grounds contain oils, absorb and hold water,
and provide adhesion to keep the dust down. Just
like existing products for unpaved roads - but with
the advantage of being biodegradable stuff that
usually gets discarded, unused to a landfill.
||I dont think it will dry out and become dusty
itself, but thatll need testing. My hunch though
(from cleaning my coffee grinder) is that its oily
and sticky properties are very persistent.
||Won't anyone think of the poor caffeinated vermicular life forms?'''
||If I was ever homeless and broke again, God forbid, I could use
my boots to scoop up a cup, if needed. I like. Those Mr. Coffee
filters would filter out any dirt, methinks.
||// poor caffeinated vermicular life forms?' // The
coffee buzzed worms in our compost bin are the
happiest youll ever meet, and we want to
share the joy on a wider scale.
<holds up hands>
the spice must flow right?
||As this topic is EXACTLY in my wheelhouse I can confirm that
many plant oils have been tried. Usually the problem is
adequate and consistent supply. Corn oils, Canola Oils, Beet
residue and even waste Cheese Whey have been tried.
||If [a1]'s idea worked and saved someone's life, could we
describe it as Coffee Bean An Angel?
||// adequate and consistent supply // Supply
shouldnt be a problem. Coffee is the second most
traded commodity in the world and most of it ends
up in landfills.
||AusCan531, how would you set up a test program
for something like this?
||Reminds me of a sign I saw at a roadside cafe, "buy seven cups of coffee, get one free". Whenever I drove that road I used to keep a nervous look out for manic caffeine-high motorists.
||//how would you set up a test program for something like
||The usual way is to pick an unsealed road, grade and scarify
uniformly then treat 1km with "a1 coffee grounds", another
with magnesium chloride, another with lignosulphonate and
leave a control section untreated. You could place dust
monitors along side each section or survey the road levels
later to measure gravel loss or, more simply, eyeball the
results while vehicles travel down the road.
||//oils have been tried. Usually the problem is adequate
and consistent supply.//
||Again, this is a problem that was solved, and then the
wisdom of that solution lost to the mists of time. It's said
that the first car seen by half of the world's population
was a Land Rover*. If not the venerable 4x4, then perhaps
a Royal Enfield motorcycle an Austin 7 or even a Raleigh
bicycle equipped with a Sturmey Archer 3 speed**. If
anything in the world is consistent, it's that old British
vehicles drip oil. Of the few things my old dad is certain:
if it isn't dripping oil, there's no oil in it. This would
ensure a constant, traffic-proportional supply of oil to the
||Here's where it all went wrong: In the post war era, Japan
sought to build a motor industry and got it's hands on
British motor vehicle technology by any means necessary,
including by bribing motorcycle racers to disappear their
'bikes into vans around the back side of the circuit. They
would disassemble and reverse engineer these machines,
and thinking they knew best, they would "cure***" the
inefficiencies such as the oil leaks.
||As a result of people moving about the place in oil-tight
Japanese machines, we now have a dust problem to
||*Believable in the past, clearly less true with every day
||**You add a few drop of 3-in1 to the oil filler in the center
of the hub and over time, the oil works its way from the
epicyclic gearbox, out through the bearings carrying any
contaminants with it. Any bicycle "mechanic" caught
packing the wheel bearings with grease should be offered
the choice between transport to Australia and a stout
||***Even Rolls Royce were not immune to this, they
obtained American automatic gearboxes back in the 30's,
noticing some rough casting, they quickly polished the
interior surfaces to the levels to which a Rolls customer
would be accustomed. Then they didn't work properly.
||I owe xaviergisz a cup of coffee for finding a prior suggestion.
I *knew* it couldn't be a completely new idea.
||Just one. And I get to keep the grounds for my
||^[a1] too freshly ground?