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Old 10-29-05, 09:19 PM   #1
phantomcow2
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How long does quickrete take to dry?

In an attempt to kill some vibration in my milling machine, which is very irritating when milling aluminum, I have packed Quickrete into every open space, particularly those left from Castings. In all about 15 pounds was added.
So how long will this stuff take to dry? I dont see it mentioned on the bag.
The room is consistently 60-65 degrees F. The room has a dehumidifier, so humidity is relatively low. And the thickest part that concrete has filled is 2 inches thick.
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Old 10-29-05, 09:29 PM   #2
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2" may be too thick. will take more than 24 hours. you should do things like quikrete in 1/2" layers, it will last longer, especially if exposed to colder temps.

yeah, i may be a girl, but you should see my front walk ...
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Old 10-30-05, 07:55 PM   #3
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Old 10-30-05, 08:06 PM   #4
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Concrete doesn't "dry". Concrete is hydraulic setting, it reacts with water to form a solid.

ETA: To make it easy for guys to understand, moisture and warmth make concrete hard.
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Old 10-30-05, 08:15 PM   #5
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Drying and curing are two different things, at least to regualr concrete, I have never used quikrete. You keep wet concrete wet to have good cure, either by keep spraying water or cover it with plastic sheet. 24 hours is a good amount of time to get near 100% cure.
This also means thinner the concrete, easier to get dry before it cures. If that happens, dried concrete comes apart easily.

I didn't read the original post carefully. I hope I answered it right.

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Old 10-31-05, 08:12 AM   #6
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Drying and curing are two different things, at least to regualr concrete, I have never used quikrete. You keep wet concrete wet to have good cure, either by keep spraying water or cover it with plastic sheet. 24 hours is a good amount of time to get near 100% cure.
This also means thinner the concrete, easier to get dry before it cures. If that happens, dried concrete comes apart easily.

I didn't read the original post carefully. I hope I answered it right.
What he said.
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Old 10-31-05, 02:06 PM   #7
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Yea all is well. This concrete was not really for strength anyways. It was to fill various holes and whatnot to add mass and dampen vibration.
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Old 10-31-05, 02:13 PM   #8
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Why don't you mount the mill or whatever the hell it is on rubber feet or something?
Or glue a few scraps of old innner tube on the parts that vibrate.

It seems to me that it would be more effective that way.
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Old 10-31-05, 06:59 PM   #9
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because adding mass means a mightier cut, and helps with vibration. I have already got the mill mounted on MDF.
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