Resin to fix reinforcing bar into brick

[MarkSmith]

Hi,

As part of my cellar conversion the structural engineer has specified a (C30) poured concrete beam with 6 "T20" (20mm ribbed steel) reinforcing bars, each set 10cm into the brick walls at either side with "resin". That's all he has specified, "resin".

Plan is to drill slightly-larger-than-20mm holes, resin in, bar in.

Question is, what resin do I want? Places such as Screwfix and Wickes supply various types - but I don't know how to choose between them.

Would appreciate any advice!

Thanks,
Mark

 

[RedHerring]

There are several companies about selling various resins for various applications e.g. http://www.timber-repair.co.uk/index.html

A quick look through google will throw up a few.

 

[PrenticeBoyofDerry]

Is it by injection or pour application?

http://www.epoxy-info.co.uk/epoxyadhesives_google.htm?gclid=CIz-19fjlJ8CFU0B4wodtGTfIQ

 

[MarkSmith]

Thanks. Will be by injection.

The stuff in that link seems to be suitable, as does the stuff from Screwfix and Wickes. Trying to work out what there is to choose between them really - if anything is suitable I'll use Wickes as it's closest and I can pick up more on the day if I need it.

Thanks for the reply!
-Mark

 

[PrenticeBoyofDerry]

If the wickes resin is suitable for appliction, I don't see why not.
I tend to use mungo or soudal products.

 

[MarkSmith]

In case anyone stumbles across this thread looking for the same info, here's what I did:

Used Wickes Vinylester Resin, which was very very good in terms of strength - held the 2.3m long metal dowels by the prescribed 10cm at the ends with ease.

A few problems I encountered along the way:

First, it's very hard to get the resin out of the container. I have a decent "mastic" gun, and it took both hands and a lot of effort to "pump" it. Really very hard.

Second, it sets very quickly, including in the nozzle - even after being in the fridge over night, and in my cold cellar. Small tube comes with two nozels, large tube comes with one. I found it impossible to do fast enough that the stuff didn't set in the nozzle and block it, partly due to the first point - it's VERY hard to get it out of the tube. I think this may be basically impossible in hot weather, where it sets much faster (according to the instructions).

Third, if you drill right through, you won't get the stuff to sit in a hole which doesn't have a "back" in the same way mortar would. Quick squirt of expanding foam right at the back of the hole, leave for a couple of hours, just to get the resin to set sit in place, worked very well.

 

[Chukka63]

hilti use to do one called a hit kit,a 2 part mix in silicone type tubes and auto mix down the twisty nozzle.

 

[MarkSmith]

That's exactly what this one was/did.

 

[mointainwalker]

By putting it in the fridge you hugely increased the difficulty of injecting it.

Whether keeping it at 20 C in the house would have made it cure too fast is another question,

When I did the same in the summer ( not with this resin ) I found it easier to inject at a higher temp rether than cool the resin.

 

[mointainwalker]

Sorry, forgot to add that tht the setting time did not decrease dramatically.

 

[alittlerespect]

Hi

Check out 'Helifix.co.uk' Go to Products/Grouts and Resins will also have applicators in other areas of the site.

Regards