Best cement for barbecue

[Lee Nowell]

Hi All,

I am looking at cast the "trough" of my outdoor BBQ out of "concrete" (i.e. the bit where you light the charcoal). Can I used normal concrete with some reinforcing bars? I have assumed not but wondered if anyone had tried it?

I was pointed in the direction of "castable 1400" which is fine to

1400 deg c but this is very expensive (=A325/ bag). I was also wondering whether I switch regular cement with fondu cement and mix the concrete as usual would work? Also, is it OK to use reinforcing mesh/ bars? I was wondering whether they would expand within the concrete as they got hot and crack the whole thing?

Any help appreciated.

thanks

Lee.

[stuart noble]

I was thinking maybe fire cement, but I see from the SF site that this is actually sodium silicate. Maybe you could combine it with ordinary cement.

[Lee Nowell]

One thing I forgot to mention was that the overall volume of the concrete is probably around 0.2 m3 (assuming a 100mm slab will be strong enough) so will need a lot of concrete :(

[mark]

I am looking at cast the "trough" of my outdoor BBQ out of "concrete" (i.e. the bit where you light the charcoal). Can I used normal concrete with some reinforcing bars? I have assumed not but wondered if anyone had tried it?

I was pointed in the direction of "castable 1400" which is fine to

1400 deg c but this is very expensive (£25/ bag). I was also wondering whether I switch regular cement with fondu cement and mix the concrete as usual would work? Also, is it OK to use reinforcing mesh/ bars? I was wondering whether they would expand within the concrete as they got hot and crack the whole thing?

Any help appreciated.

thanks

Lee.

I know of a brick built BBQ with a 2ft by 3ft paving slab as the bed for charcoal. It has been in use for years without any probs.

mark