Our helpful horses have broken one of the paving slabs around our
pond, it's a wierd shaped one so I'd like to repair it rather than
replace it.

It's a 'rustic' cement slab about 1.5" thick and a piece about 4" wide
that overhangs the pond has been snapped off. I can support it to
some extent using the adjacent slabs but I'd like to glue it back
together if I can. I'm not expecting it to be able to take the weight
of a horse (any more than it managed before!).

So, what's the best sort of glue to use for this? Preferably not
(too) toxic to fish, I have a hard enough time preventing cement
getting into the water.

--
Chris Green

wrote:
Our helpful horses have broken one of the paving slabs around our
pond, it's a wierd shaped one so I'd like to repair it rather than
replace it.

It's a 'rustic' cement slab about 1.5" thick and a piece about 4" wide
that overhangs the pond has been snapped off. I can support it to
some extent using the adjacent slabs but I'd like to glue it back
together if I can. I'm not expecting it to be able to take the weight
of a horse (any more than it managed before!).

So, what's the best sort of glue to use for this? Preferably not
(too) toxic to fish, I have a hard enough time preventing cement
getting into the water.

try Milliput

On 21/04/2011 14:57, wrote:
Our helpful horses have broken one of the paving slabs around our
pond, it's a wierd shaped one so I'd like to repair it rather than
replace it.

It's a 'rustic' cement slab about 1.5" thick and a piece about 4" wide
that overhangs the pond has been snapped off. I can support it to
some extent using the adjacent slabs but I'd like to glue it back
together if I can. I'm not expecting it to be able to take the weight
of a horse (any more than it managed before!).

So, what's the best sort of glue to use for this? Preferably not
(too) toxic to fish, I have a hard enough time preventing cement
getting into the water.


In addition to glue it may be as well to support across the break with
thin steel strip (galvanised or SS)
similar to the ones you use to tie roofs down.
Don

John Rumm wrote:
On 21/04/2011 14:57, wrote:
Our helpful horses have broken one of the paving slabs around our
pond, it's a wierd shaped one so I'd like to repair it rather than
replace it.

It's a 'rustic' cement slab about 1.5" thick and a piece about 4" wide
that overhangs the pond has been snapped off. I can support it to
some extent using the adjacent slabs but I'd like to glue it back
together if I can. I'm not expecting it to be able to take the weight
of a horse (any more than it managed before!).

So, what's the best sort of glue to use for this? Preferably not
(too) toxic to fish, I have a hard enough time preventing cement
getting into the water.

Could you drill a couple of holes into the broken edges so that you
could insert a couple of metal splints of some sort (4" nails etc)? Then
slap some resin anchor gloop into each of the holes and some along the
faces, and clamp together until set.

I think the chances of drilling a hole without splitting it are minimal.

--
Chris Green

In article , writes
John Rumm wrote:
On 21/04/2011 14:57, wrote:
Our helpful horses have broken one of the paving slabs around our
pond, it's a wierd shaped one so I'd like to repair it rather than
replace it.

It's a 'rustic' cement slab about 1.5" thick and a piece about 4" wide
that overhangs the pond has been snapped off. I can support it to
some extent using the adjacent slabs but I'd like to glue it back
together if I can. I'm not expecting it to be able to take the weight
of a horse (any more than it managed before!).

So, what's the best sort of glue to use for this? Preferably not
(too) toxic to fish, I have a hard enough time preventing cement
getting into the water.

Could you drill a couple of holes into the broken edges so that you
could insert a couple of metal splints of some sort (4" nails etc)? Then
slap some resin anchor gloop into each of the holes and some along the
faces, and clamp together until set.

I think the chances of drilling a hole without splitting it are minimal.

I think you'll be all right, maybe not with 10mm holes and an SDS drill
but with 6mm holes on a standard drill it should be ok. Maybe find some
old slabs to experiment with, hammer, no hammer and so on. I'd be
inclined to use studding rather than nails but totally agree with the
principle and it should make for a far stronger joint.
--
fred
FIVE TV's superbright logo - not the DOG's, it's ********

fred wrote:
In article , writes
John Rumm wrote:
On 21/04/2011 14:57, wrote:
Our helpful horses have broken one of the paving slabs around our
pond, it's a wierd shaped one so I'd like to repair it rather than
replace it.

It's a 'rustic' cement slab about 1.5" thick and a piece about 4" wide
that overhangs the pond has been snapped off. I can support it to
some extent using the adjacent slabs but I'd like to glue it back
together if I can. I'm not expecting it to be able to take the weight
of a horse (any more than it managed before!).

So, what's the best sort of glue to use for this? Preferably not
(too) toxic to fish, I have a hard enough time preventing cement
getting into the water.

Could you drill a couple of holes into the broken edges so that you
could insert a couple of metal splints of some sort (4" nails etc)? Then
slap some resin anchor gloop into each of the holes and some along the
faces, and clamp together until set.

I think the chances of drilling a hole without splitting it are minimal.

I think you'll be all right, maybe not with 10mm holes and an SDS drill
but with 6mm holes on a standard drill it should be ok. Maybe find some
old slabs to experiment with, hammer, no hammer and so on. I'd be
inclined to use studding rather than nails but totally agree with the
principle and it should make for a far stronger joint.

With a 'standard' drill I'll be drilling until next year! :-) I've
tried drilling holes in these slabs before and they are hard because
(presumably) the filler used with the cement is stones.

--
Chris Green