Epoxy'd Bars in Tension

[ToadJones]

For a case where there are tension bars doweled into a slab or wall, does the break-out cone for the concrete still exist as a failure mechanism, or is this failure mode for headed studs and expansion type anchors only?

 

[slickdeals]

A cone type failure is also possible. See article attached.

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[normm]

Epoxied bars in tension can have a concrete cone type failure.
See ' Fastening Technology Manual, by Hilti from their web site.

 

[ToadJones]

The question comes up because in looking at Hilti's product catalog (4.2.6 HIT RE 500 Epoxy Adhesive Anchor) no mention of concrete breakout is made in the capacity tables. Am I to assume that the values listed for embedment to develop yield or tensile strength are based on the adhesive strength alone?

 

[SeanMD]

Have you looked at the ICC report? The report for the RE-500 SD lists addresses concrete breakout.

Also, can you use RE-500 and not RE-500 SD under your building code?

 

[ToadJones]

Sean-
I have not, where can I find that?

 

[slickdeals]

http://www.icc-es.org/reports/pdf_files/ICC-ES/ESR-2322.pdf

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[slickdeals]

This lists all anchors with approvals

http://www.icc-es.org/reports/index.cfm?csi_num=03151&view_details=yes

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[ToadJones]

Thank you Slick

 

[PAstructural08]

ToadJones,

They might not mention the concrete breakout strength in the product catalog. It does mention the concrete breakout strength in the product technical guide for the HIT-RE 500SD adhesive, which is very similar to the HIT-RE 500 adhesive. The calculation of the concrete breakout strength would be similar.

The technical guide is very useful and has lots of information that is simple to understand.

 

[ToadJones]

I have the Tech Guide here, but do not see the concrete strength?

 

[slickdeals]

Where can I download the tech guide from? Link please.

We are Virginia Tech
Go HOKIES

 

[ToadJones]

I just have the hardcopy

 

[slickdeals]

Toad:
Do you know if it is a free copy that can be requested from Hilti?

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Go HOKIES

 

[ToadJones]

absolutely...they'll give you any literature you want if they think you'll be spec'ing their products!

 

[PAstructural08]

If you have the "Product Technical Guide - A guide to specification and installation", the concrete breakout strength example for the Hilti HIT-RE 500 SD adhesive is in section 4.2.6.7....page 259-260.

 

[ToadJones]

what year?
mine is the 2006 version....probably outdated.