Escayola ceramica is an unformulated hemihydrate plaster. This moulding plaster is used for the manufacturing of stucco figurines or pieces, for decorative plasterwork and modelling applications. It is also used in casting application such as working mould for ceramics for the slip casting.
High purity
Unformulated plaster
Fine particle size
| Mechanical Properties | |
|---|---|
| Brinell Hardness (MPa) | 15 |
| Dry compressive strength (Mpa) | 7 |
| Flexural Strength (MPa) | 5 |
| Chemical Properties | |
|---|---|
| Chemical Composition | CaSO4.½H2O |
| Chemical Name | Calcium Sulphate Hemihydrate |
| Colour | White |
| Minimum gypsum purity % | 94 |
| Setting Parameters | |
|---|---|
| Initial setting time (minutes) | 10 |
| Vicat Ring Fluidity (cm) | 18.5 |
| Physical Properties | |
|---|---|
| Loose bulk density (kg/m³) | 550 |
| Particle Size (% weight retained) | Trace at 200 µm < 2 % at 100 µm |
| Plaster to Water Ratio | |
|---|---|
| Plaster to water mix ratio (by weight) | 100/80 |
| Plaster to Water Ratio (by weight) | 1.25:1 |
| Water to plaster ratio (by weight) | 80% |
The recommended plaster to water ratio is between 1.20:1 and 1.28:1, with a mixing time of approx. 2 to 4 minutes. The precise
consistency to use will need to be adjusted to suit the individual application. Changes to plaster to water ratio will influence product
performance particularly setting time and strength.
Packaging available : 25 kg
Shelf life : 6
Packaging available : 25 T
Shelf life : Technical properties noted are at receipt of goods.