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  #31  
Old 10-19-2018, 08:36 PM
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Lu47Dan Lu47Dan is offline
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If you want to mix it yourself, which you would have to do for QC purposes, you wlill most likely have a paid crew standing around waiting for the next load to arrive. Five or six experienced guys standing around costs money.
Then there is materials a 94lb bag of Portland cement costs around $14, and most mixes are between 5 & 6 bags. Then you add in sand and stone. $150 is not too out of line. Plus there is no guess work on your part.
If you really want to build a mixer, then look into a continuous batching plant. You fill seperate bins with sand, cement, and aggregate. Set up the flows rates into a central mixing screw. Then as long as you keep the bins filled it will produce concrete. I saw one run on a farm in Ohio, the farmer was building a new feeder bunk for his dairy operation. He built the unit from a set of plans he bought off the net. Seemed to work well he had it setting on an old tag-along trailer hooked up to a 200hp Stiener tractor. The Steiner powered the mixer.
I rode over with a buddy to look at a C-60 dump truck.
He said on a good day him and his crew could mix and place 20cu.yd. of concrete.
Dan.
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  #32  
Old 10-20-2018, 05:04 PM
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Quote:
Originally Posted by Lu47Dan View Post
If you want to mix it yourself, which you would have to do for QC purposes, you wlill most likely have a paid crew standing around waiting for the next load to arrive. Five or six experienced guys standing around costs money.
Then there is materials a 94lb bag of Portland cement costs around $14, and most mixes are between 5 & 6 bags. Then you add in sand and stone. $150 is not too out of line. Plus there is no guess work on your part.
If you really want to build a mixer, then look into a continuous batching plant. You fill seperate bins with sand, cement, and aggregate. Set up the flows rates into a central mixing screw. Then as long as you keep the bins filled it will produce concrete. I saw one run on a farm in Ohio, the farmer was building a new feeder bunk for his dairy operation. He built the unit from a set of plans he bought off the net. Seemed to work well he had it setting on an old tag-along trailer hooked up to a 200hp Stiener tractor. The Steiner powered the mixer.
I rode over with a buddy to look at a C-60 dump truck.
He said on a good day him and his crew could mix and place 20cu.yd. of concrete.
Dan.
Dan,
That sounds like the plans I purchased from "Gizmoplans":
http://gizmoplans.com/12-cy-cement-m...c-cement-mixer
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  #33  
Old 10-20-2018, 06:19 PM
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Originally Posted by threepiece View Post
The decision to build one was prompted by economics. At nearly $150.00 per yard, the cost of concrete is much higher than expected. When I look at my future concrete needs, at this rate I can see spending 20-30 thousand dollars on material alone. This is unacceptable to me.
Just because you make your own mixer don't make the cement free.

Figure your machine cost, and then the materials cost.

Don't plan on using cheap bank sand, you need clean, washed sand.
Same with gravel.
And the big cost, Portland. What is your cost for it ?
You'll probably have to buy it by the bag, the premix truck suppliers
get it bulk (my friends plant gets a semi load a week)

Much of the cost in mixing is the labor.
A slid steer bucket is not accurate enough.
Handling by hand is out.
The volumetric mixer is a good idea, however your sand must be dry
to accurate meter right, which is a higher cost.
Your not going to dump skid loader buckets of sand in those hoppers,
it will be wet.
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  #34  
Old 10-20-2018, 09:26 PM
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I used class 5 limestone for our walk way, had the company lab guy check it out and he said that it would work fine and it did.
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  #35  
Old 11-01-2018, 12:52 PM
threepiece threepiece is offline
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Several points have been brought up in the last few posts which I have been spending time considering. I have a few ideas that seem promising at this point in time.

One thing I should make clear is that a large portion of my concrete needs is not flat work. One such project is the building of a levee to retain water for a pond. My idea is to pour a rather large footing then building the rest with concrete block. My plan now is to make a custom form from which I can cast my own block. These block would be shaped much like a standard block but larger, about 1500 lbs. each. After the blocks are set I can then fill the cavity with more concrete and rebar.

This approach will greatly reduce the demand for concrete on a given day.
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  #36  
Old 11-01-2018, 01:53 PM
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https://delzottoproducts.com/product...ncrete-mixers/

You'll note the "gizmoplans" machine looks awfully similar.

Same town too.

Made to do just what your doing.

Push button concrete.
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  #37  
Old 11-02-2018, 12:26 PM
threepiece threepiece is offline
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Quote:
Originally Posted by digger doug View Post
https://delzottoproducts.com/product...ncrete-mixers/

You'll note the "gizmoplans" machine looks awfully similar.

Same town too.

Made to do just what your doing.

Push button concrete.
Yes, possibly the same design. I did see the Del Zotto site a while ago as I was doing some research but I did not see the Gizmoplans site. While a machine like this would be helpful it does not make use of some of the resources that I already have. I would likely need to purchase most if not all of the components to build it. After building it I would still be faced with my biggest issue which is transporting the concrete to the site. This is why I keep gravitating to the mixing trailer. The added bonus of the trailer is I get to use it to move the 400 yards of clay to complete the levee after the concrete work is done. Or get my old 1938 Ford dump truck running again.
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  #38  
Old 11-02-2018, 01:41 PM
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Mount the smaller unit on a hay wagon running gear.

I went to an auction a few years ago, they had a single axle ford truck (maybe an f-800 ?)
And it had a Zimmerman volumetric mixer on it (same as the gizmoplans/del zotto)

If it went for less than $5k (it did not, some Amish wanted it more than me)
I was going to remove it and sell the truck.

Poke around some of these, they are basically a potato truck with a divider
down the middle, and a portland box on back with a screw feeder.

I missed a 2 cy all stainless salt spreader box on Craigslist the other day.
it was $500. Plan was to add the divider, get rid of the spinner, and use
that drive to drop the portland.
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  #39  
Old 11-27-2018, 08:17 AM
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Ooooh Looky here:
https://www.alibaba.com/product-deta...3c23144aMFsfXW

or here:
https://www.alibaba.com/product-deta...3c23144aMFsfXW

Looks like either one will fit in a cargo container.
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