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Grain Bin Concrete Problem

ameliasolis

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Dec 25, 2021
Messages
93
Location
United kingdom
Need some advice on how to handle a situation, so mistakes are not repeated....

Timeline...

Put up two 15K bu bins in October, concrete had been poured about two weeks before bins were set up, we began filling as soon as the 1st bin was finished. There was about 3 weeks from the time the concrete was poured until the 1st bin was filled completely, (mounded up in the center). A couple of weeks ago we had some pretty hard freezes around here (Southern Middle Tennessee). Toward the end of the cold spell is when I noticed the cracks forming.

The location of the bins required that we dig down for the left bin and put down about 1 to 4 feet of fill dirt under the right bin. At first I thought it was a packing problem and we did not pack it well enough and the ground was settling. The right bin is the one that has the most severe cracking problem, but now the left bin is cracking too.

My question is there one thing that jumps out that caused the concrete to break, or is it a chain of events that let up to it, or a bad batch of concrete? It appears that the footer each bin is sitting on is still intact, but the pad is starting to crack severely around the edge of each footer.
 
Need some advice on how to handle a situation, so mistakes are not repeated....

Timeline...

Put up two 15K bu bins in October, concrete had been poured about two weeks before bins were set up, we began filling as soon as the 1st bin was finished. There was about 3 weeks from the time the concrete was poured until the 1st bin was filled completely, (mounded up in the center). A couple of weeks ago we had some pretty hard freezes around here (Southern Middle Tennessee). Toward the end of the cold spell is when I noticed the cracks forming.

The location of the bins required that we dig down for the left bin and put down about 1 to 4 feet of fill dirt under the right bin. At first I thought it was a packing problem and we did not pack it well enough and the ground was settling. The right bin is the one that has the most severe cracking problem, but now the left bin is cracking too.

My question is there one thing that jumps out that caused the concrete to break, or is it a chain of events that let up to it, or a bad batch of concrete? It appears that the footer each bin is sitting on is still intact, but the pad is starting to crack severely around the edge of each footer concrete repair Utah.
Any feedback would be greatly appreciated.

Thanks,
 
At 3 weeks the concrete should have reached close to 90% of design strength, so you probably did not overload it, unless the batch was defective. Improper foundation compaction could be the problem, especially the bin that got 4 ft of fill. It should have been installed in 6” layers, properly compacted before the next layer was added.
 
How thick are the slabs? Describe the reinforcement. What was the slump?
 
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