Amphore Cast
Amphore Cast is an unformulated plaster used in ceramics to produce working moulds for slip casting in sanitaryware and tableware industry
Benefits
Unformulated plaster
Short setting time for high productivity in the mouldshop
Technical data
| Physical Properties | |
|---|---|
| Apparent Bulk Density (g/cm³) | 0,7 |
| Bulk density (compacted) kg / m³ | 1000 - 1050 |
| Loose bulk density (kg/m³) | 680 - 720 |
| Particle Size (% weight retained) |
0.02% at 200 µm 0.6% at 90 µm |
| Chemical Properties | |
|---|---|
| Chemical Composition | CaSO4.1/2H2O |
| Colour | white / light grey |
| Minimum gypsum purity % | 90 |
| Setting Parameters | |
|---|---|
| End of warming phase (minutes) | 34 |
| Exothermic Reaction (°C) | 45 |
| Final setting time (minutes) | 25 |
| Initial setting time (minutes) | 10 |
| Linear Expansion (%) | 0,16 |
| Start of warming phase (minutes) | 5 |
| Vicat Ring Fluidity (cm) | 18 |
| Mechanical Properties | |
|---|---|
| Flexural Strength (MPa) | 2,3 |
| Plaster to Water Ratio | |
|---|---|
| Plaster to Water Ratio (by weight) | 1.33:1 |
| Water to plaster ratio ( by weight) | 75% |
Instructions for use
The recommended plaster to water ratio is between 1.25:1 and 1.40:1, with a mixing time of approx. 2 to 4 minutes, depending on batch size and plaster shop process.Water and Plaster must be measured carefully to ensure constant performances.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, strength and permeability.
Packaging and shelf life
Bag
Packaging available : 40 kg
Shelf life : 6 months