Replacing AtCost concrete stanchion?

[crazy_bull]

So one of the 'Atcost' concrete stanchions has 'blown' where water has been allowed to run down it (faulty gutter), get frosted and then attack the reinforcing rods inside, causing further blow. I am sure it would be fine for a long time as long as the water stopped going down it, however I guess at some point it will need to be repaired? or replaced?

Is either possible?

It is a corner post if that helps or hinders.

C B

 

[renewablejohn]

Cannot see a problem. I have two 15 tonne jacks you could borrow. Concrete saw and you could fell it like a tree.

 

[suffolksmallholder]

Yes concrete structures as you describe are repairable, given time.
There are modern methods which use resin binding and a lot of the time factor is in the drying process because resin & water don't mix. If you see a bridge piller covered for several months means the structure is being dried. The dual carriage-way pillers near Hemel Hempstead were repaired in just this way.
Big business and as usual there are companies specialising in this method.
Old 'Crendon Concrete' barns are a classic farm building that need attention using this medium. If it will ever happen is another Q as they are not big enough for modern farming machinery & the start again option is often more cost effective.
http://www.cra.org.uk/ is worth looking at
This fellow was the grandfather of lightweight concrete structures. https://en.wikipedia.org/wiki/Guy_Maunsell. The thought process he started continues today. I have a feeling his company still exists in some for or another but in a different name. 25 years have passed since I knew someone in this buisiness and I've forgotten the company name! Duckett was the surname.
SS

 

[S J H]

Can you shutter around it and cast a new one?

 

[crazy_bull]

Can you shutter around it and cast a new one?

Possibly, might be a bit beyond me to completely cast a new one, however may be able to chip more loose away to get the new pour to bind in, but easy to shutter as plenty of bolt holes in the pre-cast..... something to ponder.... perhaps the resin mentioned above.

Will also keep an ear out for someone dismantling a similar shed to get a replacement....

C B

 

[crazy_bull]

Yes concrete structures as you describe are repairable, given time.
There are modern methods which use resin binding and a lot of the time factor is in the drying process because resin & water don't mix. If you see a bridge piller covered for several months means the structure is being dried. The dual carriage-way pillers near Hemel Hempstead were repaired in just this way.
Big business and as usual there are companies specialising in this method.
Old 'Crendon Concrete' barns are a classic farm building that need attention using this medium. If it will ever happen is another Q as they are not big enough for modern farming machinery & the start again option is often more cost effective.
http://www.cra.org.uk/ is worth looking at
This fellow was the grandfather of lightweight concrete structures. https://en.wikipedia.org/wiki/Guy_Maunsell. The thought process he started continues today. I have a feeling his company still exists in some for or another but in a different name. 25 years have passed since I knew someone in this buisiness and I've forgotten the company name! Duckett was the surname.
SS

Well thank you for this, turns out there is a concrete repair company three villages over!! not that you'd know they were there!! They repair cast concrete structures etc etc

C B

 

[Exfarmer]

I have seen them strapped up with heavy angle iron cut to fit

 

[Nearly]

We had a student demolish one. There's a girder there now.

 

[Fuzzy]

Well thank you for this, turns out there is a concrete repair company three villages over!! not that you'd know they were there!! They repair cast concrete structures etc etc

C B

Could you take a photo of it. I have a couple of barn type (crendon/atcost) concrete stanchions kicking about.

 

[kill]

Would it wrap with fibre glass and inject with sealant/bonding agent?

 

[kill]

Could you take a photo of it. I have a couple of barn type (crendon/atcost) concrete stanchions kicking about.

Maybe not a bad job to do as I understand from someone older than me who saw some of these sheds being built that a concrete footing was poured for these stanchions around a wooden box so when the box was removed there was a concrete socket for the stanchion to slot into as the stanchions were very heavy and this made errecting these sheds safer

 

[SilliamWhale]

Id be tempted to lash or fix an rsj or timber to it. I dare say you could repoint or tidy up with some cement too

 

[milkloss]

Id be tempted to lash or fix an rsj or timber to it. I dare say you could repoint or tidy up with some cement too

We've done this more than twice and to be honest I wish we'd changed the post. It doesn't look pretty.

 

[crazy_bull]

So the shed repair has started, the stanchion will be repaired tomorrow (should have been done before the new doors went on but hey ho,....timings....)

Before:

After:

The Stanchion to be repaired:

Have to cut a line down each side to give a square edge, chip away around the reinforcing, replace some bar. Shutter, paint with cement primer x 2 and finally re-concrete with some form of concrete resin compound, that is nearly the same price as gold.......

The whole front face of the pillar needs replacing.

All for the cost of not replacing a leaking gutter 5-6 years ago!!


Next mission replace the guttering on the shed, plastic would be the cheapest but hard to fix onto the shed, the metal brackets are there already for more cement guttering....



C B

 

[SilliamWhale]

How do they fix the concrete if it spalls on the motorway bridges?

 

[roscoe erf]

How do they fix the concrete if it spalls on the motorway bridges?

Get an over height lorry to go under it

 

[crazy_bull]

How do they fix the concrete if it spalls on the motorway bridges?

Like the above I believe, the lad who is helping me does concrete repairs for his job, normally on high rise structures and poured concrete structures.

C B

 

[Mrs Brown]

Might be an idea to try and get a length of galvanised reinforcing rod to help as it might never be as air tight as when new.