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Old 10-19-2018, 08:36 PM
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Lu47Dan Lu47Dan is offline
Connoisseur of Old Iron
Join Date: Mar 2006
Location: N/W Pa.
Posts: 5,992

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.
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