poured concrete walls

[sv250]

anyone tried pouring walls using concrete panels? need a wall between two silage pits ,just wondered if panels might work already reinforced so no need for lots of bolts through wall to hold panels together?

 

[Pan mixer]

Many panels flex when they are under strain, your wall may not be perfectly straight?

 

[Limcrazy]

How are you going to keep panels in place? Back a tractor against them or something?

 

[melted welly]

anyone tried pouring walls using concrete panels? need a wall between two silage pits ,just wondered if panels might work already reinforced so no need for lots of bolts through wall to hold panels together?

yes, works fine. Fix at bottom with rawl bolts, plates at the top and tie the reinforcing together. Use vibrating poker to ensure concrete gets to where it needs to be and eliminate air bubbles.

 

[KB6930]

Simple answer no it won't work concrete is very heavy and they will bend and break

 

[Steveyboy!]

Don't try and do it in one pour is what i'm tbinking. Too much weight in one go.

 

[sv250]

not going to park a tractor against them was thinking of clamping them either end to the steels, i'm talking 6 inch panels can't see them breaking ,yes i know concrete is heavy but if they are used on silage pit walls surely they're up to the job?

 

[glasshouse]

Two artic trailers bolted together with wheels removed makes a good mould

 

[Sharpy]

not going to park a tractor against them was thinking of clamping them either end to the steels, i'm talking 6 inch panels can't see them breaking ,yes i know concrete is heavy but if they are used on silage pit walls surely they're up to the job?

If you go for this pile road planings or similar against each side and take care!

 

[Werzle]

anyone tried pouring walls using concrete panels? need a wall between two silage pits ,just wondered if panels might work already reinforced so no need for lots of bolts through wall to hold panels together?

Bound to be strong enough but how are you going to stop the concrete sticking to the panels

 

[Pan mixer]

Bound to be strong enough but how are you going to stop the concrete sticking to the panels

Plenty of release oil would be necessary, I use fish oil but only because I have a barrel full of it in the yard. The oil does wear off though, it wants to be put on, the formers bolted in and the concrete poured, a few days delay and the new concrete will stick like snot - got tee shirt - and that was with wooden formers.

Using a tractor is a poor idea as there is enough flex in the tyres to allow the former to move a bit leading to a leak which is a big nuisance.

I mastic (with frame seal) up the posts to stop the leaking before I put the former on, for the secon d layer I run a horizontal line of mastic at the top of the bottom wall too.

A 'kicker' cast into the foundation is a brilliant plan, stops the bottom wandering about.

Here is one that I did the other day...

 

[Exfarmer]

What is supporting the new poured wall? it will either need a good footing or some substantial RSJ

 

[concrete agri]

You should of put starter bars up outa the found

 

[Lincsman]

Instructions for proper shuttering is no more than 1m depth/hour, to allow the first lot to go off and reduce the load on the shutter.

 

[gmgmgm]

In Europe, it's common to build houses using poured concrete walls and it's very quick (quicker than our primitive stacking of mud/clay bricks...). They use dedicated metal moulds. So it certainly can be done with the right kit.

 

[Exfarmer]

Have a look at building the Hoover dam, from memory it was a continuous pour, but had to be done carefully but it could bnot stop to ensure the concrete bonded

 

[Sharpy]

Have a look at building the Hoover dam, from memory it was a continuous pour, but had to be done carefully but it could bnot stop to ensure the concrete bonded

Power station cooling towers are a continuous pour to eliminate "dry joints", about 2ft a day iirc.

 

[dannewhouse]

Why not fit pannels in the stations and not bother with a shuttered wall, especially if you can let the pannels in from above?

 

[onesiedale]

Surely you'd be better off just hiring in the correct shuttering for the job.
I'd feel much more comfortable assembling shuttering complete with the correct fixings than 'making do ' with a number of 6" panels - they are heavy, bulky and awkward to fix, which also can mean dangerous.
Besides, if you already have the panels for using as shuttering, then surely you have twice as many as you need to actually make a wall.

H&S would have an absolute field day if something went wrong.

 

[Phil P]

@agricontract has done plenty walls using concrete panels as shuttering, rapping the panel’s with pallet rap stops them sticking.