Olafdur is a very high strength formulated plaster used to produce block and case moulds used in the production of ceramic ware, where very high strength and high dimensional accuracy are required. It can also be used to produce working moulds for the production of clay roof tiles.
For Case and Block Moulds
Very high strength
Very high dimenisional accuracy (limited in expansion)
| Physical Properties | |
|---|---|
| Apparent Bulk Density (g/cm³) | 1200 |
| Particle Size (% weight retained) | < 0.04% at 200 µm |
| Mechanical Properties | |
|---|---|
| Brinell Hardness (MPa) | 195 |
| Dry compressive strength (Mpa) | 46,9 |
| Flexural Strength (MPa) | 11,9 |
| Pore Volume (%) | 16 |
| Chemical Properties | |
|---|---|
| Chemical Composition | CaSO4.1/2H2O |
| Colour | pale blue |
| Setting Parameters | |
|---|---|
| Initial setting time (minutes) | 9-14 |
| Linear Expansion (%) | 0,16 |
| Vicat Ring Fluidity (cm) | 20-25 |
| Plaster to Water Ratio | |
|---|---|
| Plaster to Water Ratio (by weight) | 3.33:1 |
| Water to plaster ratio ( by weight) | 30% |
The recommended plaster to water ratio is between 3.00:1 and 3.33:1, 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, 40 kg, 50 kg
Shelf life : 6 months