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Broadback
 
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Default Making concrete slabs

It seems to me that slabs are rather expensive, so I am thinking of
making some. I need the slabs to have a bar texture on top so that they
are non slip when laid on a slope. Anyone any experience of making
these, also a source of moulds please?
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Default Making concrete slabs


Broadback wrote:
It seems to me that slabs are rather expensive, so I am thinking of
making some. I need the slabs to have a bar texture on top so that they
are non slip when laid on a slope. Anyone any experience of making
these, also a source of moulds please?


My god that sounds a bit of a faff.

Can't you get wholesale or reclaimed slabs to keep the cost down ?

Unless you're covering millions of m², (in which case you'd need a
whole load of moulds) i'd buy 'em.

Cheers

Paul.

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Rob Hamadi
 
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Default Making concrete slabs


Broadback wrote:
I need the slabs to have a bar texture on top so that they
are non slip when laid on a slope.


I'm no expert (far from it) but I'd assume that you'd put the relief to
create the texture in the bottom of the mould, then turn the slabs over
once set.
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Rob

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TonyK
 
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Default Making concrete slabs


"Broadback" wrote in message
...
It seems to me that slabs are rather expensive, so I am thinking of
making some. I need the slabs to have a bar texture on top so that they
are non slip when laid on a slope. Anyone any experience of making
these, also a source of moulds please?
--
Please do not reply to the email address.
All emails are deleted on receipt.


Forget it. I made some caps and finials once, never again.


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Ian Stirling
 
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Default Making concrete slabs

Broadback wrote:
It seems to me that slabs are rather expensive, so I am thinking of
making some. I need the slabs to have a bar texture on top so that they
are non slip when laid on a slope. Anyone any experience of making
these, also a source of moulds please?


What I've done - not exactly for this.
Obtain a large 2" sheet of polystyrene.
For 50cm slab.
Cut 3 80*80cm squares.
Cut out 50cm square, with side relief. | \ / | (so it comes
out easily).
Stick this to the bottom slab with contact adhesive or something.
To use.
Spray with vegetable oil.
Weigh out quantities of small aggregate, sand, cement, water, and mix in
a bucket, using a drill mixer, and boiling water, with some accellerant.
Pour into mould.
Place some string loops into the mould, so that you can lift it out
easily.
Place top on mould.
Cure, repeat.
Edit the mould using a sander on a dremel, or a blowtorch.

Alternatively, you can use a greased concrete mould, if you saturate it
with grease, and the relief angles are adequate.
Having a valve or hole, to introduce compressed air or a hosepipe into
the back, to press it out, may make it easier.
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