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Re: Non-shrink Grout[Subject Prev][Subject Next][Thread Prev][Thread Next]
- To: seaint(--nospam--at)seaint.org
- Subject: Re: Non-shrink Grout
- From: SDGSE(--nospam--at)aol.com
- Date: Sat, 20 Feb 1999 02:29:03 EST
Greg, What you are missing is that column base plates are set on leveling nuts attached to anchor bolts. If the grout shrinks by 1/16", according to your example, then the load will be carried by the anchor bolts. It gets worse if you have a relatively smaller column with a relatively larger base plate. The base plate will tend to bend between its supports-the anchor bolts. If you check the stresses you may end up with much larger bending stresses than what it was designed for. Of course, the anchor bolts may not be able to carry the load. Non-shrink grout essentially bonds to the concrete surface and the insert. If you use regular grout and it shrinks, then the problem will be the bond between the concrete and the grout, and not the bond between the grout and the rebar. The grouts that you mentioned are essentially non-shrink grouts. Regards, Oshin Tosounian, S.E.
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