Though I hadn't thought about usding it to cast those big blocks, it sure makes sense. Selling it as fill or dry-paving material is sort of what I expected. I used to rent a house up in Danby-4-corners, VT, where the big employer is the marble mine. Everything in that town is paved with marble chips & dust.
I wonder if anyone has sucsessfully used the washout as part of a concrete mix, after crushing it to sand-sized particles? Or, maybe it's not tough enough for that.
I'm surprised by the number of responses I got on this. They all more- or-less agree, but there's clearly some varioatons on the theme. Next time I'm in the area, I'll drop by the local concrete yard and ask them what they do.
And haven't you guys heard of the new omniphase beavers? They're self adjusting and come in impedance-matched pairs.
Did know that if you MUST slow down a pour from curing, then dump in tons of sugar. Learned that from someone who worked at building Hell err Hartsfield. They had a second story form for some concourse they were filling when, a few tens of trucks in, it let loose, spilling concrete down *all* over the ramp.
What followed was organized chaos. Carpenters were fixing the forms, some trucks were dumping rapidly purchased loads of sugar, a D8 was churning the mix to keep it from setting, guys with hoses kept washing down things and loaders were filling other trucks with the spill for dumping in the back 40.
We dont get left overs here where I live ,the concrete supplier has batching trucks that mix the concrete when they get to the site . It is mixed as it come out of the chute ,separtate containers for cement powder , gravel , sand and water .The mix can be adjusted by variaying the ingredients The mix is measured by a computer as it is discharged ,you only pay for exactly what you use.
faze [feyz] [feyz] Show IPA verb (used with object), fazed, faz·ing. to cause to be disturbed or disconcerted; daunt: The worst insults cannot faze him.
Of course, beavers are kind of random acting, so it's hard to phase them.
Katherine, NT . The concrete supplier has two batching trucks . We do have a supplier that has bowl trucks , but only get jobs when the batching trucks are flat out. The bowl trucks you have to order to the nearest .5 of a cubic metre any left over is waste unless you have something formed up to use the extra , you pay for it anyway.
My abutting neighbor makes precast, prestressed bridge components. His lef= tover concrete goes directly into my Kubota bucket (about 1/2 yard capacity= ) and then directly into forms I have had ready and waiting. Have poured m= any lineal feet of walkways, door stoops etc. Downside is that he uses hig= h strength fast setting concrete, and it takes me about 4-5 minutes to hurr= y back to my place, pour and finish real quickly. Adding water slows it do= wn but weakens it.
My next project will be precast decorative fence posts.=20
Well, there's your problem! ;-P You're a wide spot in the road with filling stations, supermarkets, and the junction of Stuart Hwy and Victoria Hwy... (Nothing wrong with that, of course - they had to put it somewhere, and that's where the easy paths met.) A quick search says Population ~10,100.
Consider yourselves lucky you're big enough to keep a concrete yard and the Batching trucks busy. Most small towns it's mix it yourself.
Just look at all the moving parts and wear items on that Batching truck, with the rubber conveyor-belting mixing chute and mixing augur and all the hydraulic motors and dispensing augurs for the ingredients, and everything has to work... Maintenance Intensive. I'll betcha they are jury-rigging things during the day as something fails or wears through, then getting them fixed at least once a week. We can get a few Batching Trucks in Los Angeles and the far-flung suburbs, but pre-mix (or "Transit Mixed") is the norm.
Most little batches like that they have a stationary Batching Mixer at the rental yard, they dispense into a 2-yard two-axle tilt-dump or mixing (little drum & gas engine) trailer, and you tow it to the job and dump it yourself.
leftover concrete goes directly into my Kubota bucket (about 1/2 yard capacity) and then directly into forms I have had ready and waiting. Have poured many lineal feet of walkways, door stoops etc. Downside is that he uses high strength fast setting concrete, and it takes me about 4-5 minutes to hurry back to my place, pour and finish real quickly. Adding water slows it down but weakens it.
No, his secondary business (in partnership with you) should be making precast concrete parking bumpers, precast door and window header beams for block buildings (Pre-stressed and Structurally Rated like the bridge beams) and decorative fence posts. Or Garden Gnomes and Birdbaths and Garden Statuary if you have a way to paint them up.
Point being, skip the Kubota bucket step and do them right there at the mixer. Make up a bunch of molds and pre-make the rebar that goes inside on welding jigs, and develop the tooling to fill and vibrate them quickly, and set them off in the corner to cure.
One of his guys can take 5 minutes to fill the little molds with the leftovers after they fill the big molds they're making for the day.
And make a little powered conveyor belt for the molds that's right at the output chute of his mixing system. They can stick prepared molds on one end of the belt, then fill and advance, fill and advance, till they run out of leftover concrete.
(HINT) Mold the company name into parking bumpers and stepping stones, and now they're also useful as Promotional Materials...
Oh, and Ivan? Please insert line breaks so we don't have to word wrap.
70-character line break is about right, that allows for nested quotes.
The remnants ARE kept motile with extra water until they get to a place where they may dump it. There are companies, *usually* paving or landmoving firms, that will allow the trucks to "wash out" in a special pit reserved for that purpose.
The material remaining is called "washout". It's kept stirred and broken up in the pit, sometimes mixed with soil and/or more gravel, then sold as a road base material. Except for its being dusty when dry, it's also a superior driveway material -- strong, resists wear, and will stabilize soils not conducive to building a driveway from straight asphalt.
A lot of folks will put it down and just keep it watered with a little calcium chloride, or they'll top (say) 6" of compacted washout with a thin cap of asphalt paving.
I've got 430 feet of it as a driveway, 8" deep (Sandy clay underneath). It's a great driveway.
Where I live if there is a small amount, at least what the truck driver considers small, they dump it on the ground and expect the homeowner to deal with it. If there is more thae bring it back to the plant to make "ecology blocks". Ecology blocks are large rectangular blocks with a key cast into the top and a keyway cast into the bottom. They are use to hold back hillsides and the like. Oftentimes you can see the different layers of concrete, indicating multiple pours. ERS
The usual deal, is that the readymix operator delivers it all, and the customer can have the 'extra' dumped onto his shoes.
The truck driver knows how hard it is to clean out of the truck, and usually does NOT have his own dumpsite nearby, so it's the customer's problem if the forms won't hold the whole order.
Water alone doesn't stop it from hardening. Inside the truck.
Remember Concrete or cement trucks only make money delivery.
When one completes delivery they are back to be re-loaded.
Now if there is a large part - might have a plan at home or anothers place.
Either way if there is daylight the concrete truck is running to / from the plant to somewhere. A partial load just saves the company a bit but sometimes they dump it and sent it to a crusher.
I had 64 loads of concrete here - and they only used 4 trucks. Once started, they kept a continuous pour until the entire foundation was done. Big and with deep piers and normal rings and crosses. It was also 7K not the 6k stuff - so it hardens a bit faster.
The companies around here usually will fill your forms and if there is any left the driver will do one of two things. Either say something like
1/4 yard 20 minutes or you have 20 minutes, Or they will ask you where they can wash-out.
The first option basically means you can toss together a form FAST and pour the rest for a step or similar. I know the outfits around here normally mix VERY close to order, so you want to plan ahead.
"Steve W." fired this volley in news:ln2850$lb$1 @dont-email.me:
I just (had) placed and finished a 10yd job which I formed. The guy ordered the load, and when they finished, they had only "clinkers" in the barrel. They had ONE 2-gallon bucket-full left.
In that case, it's not worth their going to a washout yard. I told him to just wash out in a low spot at the entrance to the barn. If I'd told him "No", he'd have had to haul it back. That's the code here.
Local stuff varies. Some absolutely prohibit washing out on anywhere but at a disposal site or the mix plant. Some will let them wash out anywhere nobody cares.
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