Superfine Green is a beta hemihydrate plaster (CaSO4.½H2O) produced from naturally occurring gypsum mineral. This product is used in the compositions of binders, cement based mortars, adhesives and plaster based wall finishing products. It can also be used in slip casting of Sanitaryware
High Purity
Coarse product
| Chemical Properties | |
|---|---|
| Chemical Composition | CaSO4.½H2O |
| Chemical Name | Calcium Sulphate Hemihydrate |
| Colour | Off-white |
| Minimum gypsum purity % | >92 |
| Setting Parameters | |
|---|---|
| Final setting time (minutes) | < 50 |
| Initial setting time (minutes) | 10 - 16 |
| Mechanical Properties | |
|---|---|
| Flexural Strength (MPa) | >4.5 |
| Physical Properties | |
|---|---|
| Loose bulk density (kg/m³) | 620 - 720 |
| Particle Size (% weight retained) |
< 6.0% at 63 µm <1% at 90 µm |
| Plaster to Water Ratio | |
|---|---|
| Plaster to water mix ratio (by weight) | 100/68 |
| Plaster to Water Ratio (by weight) | 1.47:1 |
| Water to plaster ratio ( by weight) | 68% |
The recommended plaster to water ratio is between 1.40:1 and 1.55:1, with a mixing time of approx. 2 to 4 minutes, depending on batch size. Mixing utensils should always be clean and free from set plaster. Use distilled water only. For consistent results, attention must be given to the correct proportioning and mixing of the plaster and water. Add the weighed quantity of plaster slowly into the measured volume of water and allow to soak. Do not mix fresh plaster with that which has been mixed for some time previously. Changes to plaster to water ratio will influence product performance, particularly setting time and strength.
Packaging available : 25 kg
Shelf life : 6
Packaging available : 1.05 T
Shelf life : 6