Teknicast is a formulated hemihydrate plaster (CaSO4.1/2H2O) produced from naturally occurring high purity gypsum mineral. It is off-white in colour. It is used for the production of decorative fibrous plasterwork and GRG
Working properties formulated specifically for the production of fibrous plasterwork
Produces good strength fibrous plasterwork
Good reproduction of fine detail
shelf life of 9 months
| Mechanical Properties | |
|---|---|
| Brinell Hardness (MPa) | 40 |
| Dry compressive strength (Mpa) | 19 |
| Wet Compressive strength (Mpa) | 10 |
| Chemical Properties | |
|---|---|
| Chemical Composition | CaSO4.1/2H2O |
| Chemical Name | Calcium sulphate hemihydrate |
| Colour | off-white |
| Physical Properties | |
|---|---|
| Compacted bulk density (kg/m3) | 1140 |
| Loose bulk density (kg/m³) | 740 |
| Particle Size (% weight retained) |
2% at 90 µm 5% at 63 µm 25% at 32 µm |
| Setting Parameters | |
|---|---|
| Final setting time (minutes) | 24 |
| Initial setting time (minutes) | 19 |
| Linear Expansion (%) | 0.2 |
| Plaster to Water Ratio | |
|---|---|
| Plaster to water mix ratio (by weight) | 100/60 |
| Plaster to Water Ratio (by weight) | 1.67:1 |
| Water to plaster ratio ( by weight) | 60% |
Please use with the recommended plaster water ratio, with a mixing time of approx. 2 to 4 minutes or with a mix until homogenous.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 : 9