uses for fly ash?

[Anonymous]

can anyone tell me what uses there are for fly ash from coal fired power plants?
i have heard that in some cases fly ash is used in concrete and as fill dirt.

[tomnoy3]

I toured Coal Creek Station near Bismark, ND this summer. And all they said it was used for was in concrete products.

-Tom

[joseph2]

Like cinder blocks.I have some fly ash,I might screen it and use it for cinder ballast.

[der5997]

I ask myself the question "What does this ....(the stuff I'm trying to figure a use for) look like?" This generally yields some interesting applications , even if the ideas have to "cook" for a night or two.
If you are asking your question about fly ash in terms of "industries you can model", then it sounds like you send a gon or two from your power plant to your concrete plant. [:)]

[Anonymous]

Yes, Fly Ash is used as an additive in concrete to replace some of the portland cement. I understand that replacing about half of the portland cement with fly ash will still allow reasonable strength and lower the heat generated during the curing process. Unfortunately, I don't know how it is shipped, but I would suspect it would be shipped in large bags. It is very fine and would make an aweful cloud if shipped in an open gondola. I recommend you contact a concrete supplier in your area that provides concrete for road or bridge construction. Good Luck - Ed

[Anonymous]

I used to haul fly a***o concrete plants in tankers capable of being pressurized prior to blowing the product up to the silo. From there it is used in making concrete. Along with sand, gravel, additives. I think to model a concrete plant served by rail it took about 2 parts gravel, 2 parts sand a shot of additive and fly ash as well as any other needed items such as fiber to create a decent concrete batch. And lots of water.

Generally the power plant which I hauled flyash from stored some of it from the coal burners and dumped the rest in a large field some 20 acres in size.

Hope this helps

Lee

[Anonymous]

As mentioned prior, Fly Ash, has been mixed with not only concrete but also, in some intances, asphalt. If you could come up with a truly useful and completly using product of Flay Ash, You would become a Bilionaire overnight.

[Anonymous]

In tests, using fly ash in a blend for brick making, the brick has proved to excede the standards laid down by the Government.

[ndbprr]

Fly ash is the residue from burning coal. It is generally extremely lighta nd is a form of fine sand on the order of beach sand. It can range from a light beige through black and all colors in between from the same source. It is extremely abrasive and has to be removed from the effluent stream due to environmental laws. It is basically nonhazardous and being so light there is virtually no use for it. It is used in concrete as a filler to cut down on the volume of more expensive materials required and is extremely hard so there is no loss of structural strength. It is also used in some apshalts for road paving but nobody has come up wth a process to utilize it as a raw material. It is so light it can't be conveyed very far in open top trucks. Just one of those things we have to live withto have heat and light. Fillers and fill are about all it is good for.

[Anonymous]

Well, coal loaded off the Corbin [KY] Divison Goes to Plant Bowen, in several grades,
according to So Content, burned about 107t in about a minute. The flyash is pumped in slurry across the road to a settling pond, where tractor shovels pile the material and load it dry into open dump trailers, pulled by the big road sleeper tractors [longnose Pete.'s KW's Freightliners and such]. The loads are covered or "tarped" the plant also stores flyash in verticle tanks to top load dry bulk tankers, as afore mentioned. The people at Quikrete of Florida use to tell me that it might do o.k. with asphalt, but not with Portland type cement. Cement mix goes: enough aggragate to fill the void, enough D.O.T. builder sand to fill the space between the rocks, enough Portland to fill what space is left. If the Sand must meet specs, [D.O.T.] where would flyash fit in?

[tomnoy3]

The fly ash being shipped from Coal Creek Station was actually being shipped in 54' PS covered hoppers. In response to der5997 and cablebridge.

-Tom

[Anonymous]

I work for the local utility and they have used fly ash mixed thoroughly with the local soil before pouring the slab for a very large stores building. Our engineers say this will work but I'm not real sure. I've also seen it used to dry up soaked ground by working it into the soil. The contractor did this under a large parking lot and so far it hasn't settled. Anyway, no matter how bad we want to get rid of it we can't build enough buildings or pave enough parking lots to use it all and nobody else seems to want to use it for the stated purposes.

[Anonymous]

I want to know where all the flies they burn come from? I can't imagine burning enough flies to make a tanker of ash. That's got to be a garbage dump full of flies, wow. FRED

[cacole]

An item in today's local newspaper written by a reporter who was taken on a guided tour of a large coal-burning power plant in SE Arizona says that fly ash is used to make concrete smoother, since fly ash is a very fine, lightweight powder. The plant managers complained that there was not enough of a market for fly ash and that they have a large mountain of the stuff piling up that they can't even give away, and don't know what to do with it, since they must keep it constantly moistened so it doesn't blow away and polute the atmosphere, thus using even more water in an area where it's pretty scarce and their power plant is sinking as the ground subsides from underground water extraction.

[cmitcham]

when they burn the flies, can they mix in these biting, orange ladybugs that have overtaken my yard?

calvin.

[Anonymous]

Fly ash arrives at the UP Etiwanda Y in closed hopper cars. It is stored in a tall silo and another inflated circular cell building. It is transfered to air slide hopper trucks. I am told it is used in concrete slabs to make the top skin tough.
Lindsay

[Puckdropper]

Why not mix some glue in it and use that for particle board rather than wood? Reclaim the sawdust, but don't cut boards for particle board.

[Anonymous]

that is a good idea

QUOTE: Originally posted by Puckdropper

Why not mix some glue in it and use that for particle board rather than wood? Reclaim the sawdust, but don't cut boards for particle board.

[Anonymous]

QUOTE: Originally posted by cmitcham

when they burn the flies, can they mix in these biting, orange ladybugs that have overtaken my yard?

calvin.

Calvin Wait!!

If they are indeed lady bugs don't kill them, they are your friends[angel].
Lady Bugs eat aphids, you know those nasty little critters that suck the good out of your roses and other ornementals. They acctually sellthem by the thousand/bag.
If they are biting Isuspect you may have some kind of potato beetle or Japanese beetle which has started to devour lillies by the thousands in Nova Scotia.

I'm sorry I digress gardening is 5 months away, I'll get back on track here.

[Anonymous]

I actually have to BUY a thousand (or so) lady bugs to keep the aphits out of my patch. Praying manties will be another very effective soldier in the garden.

There are many things besides fly a***hat can be hauled in tanker trucks. I myself have found "Lime" from the limestone quarry going to a Tamko Shingle Plant..(Roofing Shingles) pretty intense.. And also dont forget "Mortar" the stuff that goes between bricks. Very tough to blow off but that are just a few of similar products hauled.

[michaelstevens]

[8D]
It is really sad that even the environmentally friendly insects are being sacrificed so needlessly !
[:D]

A couple of other facts (from an old public works Engineer) about Fly-Ash or Pozzolan;
(a) In addition to improving durability, adding Pozz to a concrete mix can do 3 other important things (depending on % used)
(i) prolong workability
(ii) improve air entrainment and
(iii) reduce unit weight e.g. for beams and decks
(b) another major use for Pozz is as "self compacting" fill, such as
(i) in a sink hole or wash-out (where it wouldn't be safe for men & equipment to enter) and
(ii) it proves very successful in that V shaped void between a bridge abutment and the sloped earth embankment (beneath the approach slab).

Happy Xmas !!

[:D][:D]