AusBonsai

Pyrocrete has no lime.
Make up is Portland cement,Mica,Calcium Carbonate, Magnesium Oxide.

alan peck wrote:Pyrocrete has no lime.
Make up is Portland cement,Mica,Calcium Carbonate, Magnesium Oxide.

Hi Alan,

Portland cement contains lime. The following statement is from wikipedia:

"The major raw material for the clinker-making is usually limestone (CaCO3) mixed with a second material containing clay as source of alumino-silicate. Normally, an impure limestone which contains clay or SiO2 is used. The CaCO3 content of these limestones can be as low as 80%."

It was taken from this page: http://en.wikipedia.org/wiki/Portland_cement

Beautiful pot!

Joel

Ciment Fondue is white cement with Polymer glue added.....makes it smoother and as the white cement has more Alumina in it it is good for sculptures. The ratio is variable cement to glue, but I used about a cup of white PVA to half a bucket of white cement and a cup or two of plaster mixed with water (added for smoother finish as I was carving into the surface). This mix can also be used with hessian dipped and draped over polystyrene then a final coat painted fairly thick (like custard) on the surface when just damp.Before is is fully dry etch grooves and cracks into surface with screwdriver or files. Can be painted last or oxides added for colour when mixed at the beginning. Have fun!