Ultramix is a very high strength formulated plaster used to produce block and case moulds for the manufacturing of tableware, where a very high level of detail reproduction is required. It can also be used to produce case moulds in the sanitaryware industry.
Designed to make block and case moulds
High level of detail reproduction
High mechanical resistance
| Mechanical Properties | |
|---|---|
| Brinell Hardness (MPa) | 180 |
| Dry compressive strength (Mpa) | 56 |
| Chemical Properties | |
|---|---|
| Chemical Composition | CaSO4.½H2O |
| Chemical Name | Calcium Sulphate Hemihydrate |
| Colour | Buff |
| Physical Properties | |
|---|---|
| Compacted bulk density (kg/m3) | 1500 |
| Loose bulk density (kg/m³) | 1100 |
| Particle Size Distribution (mesh size and % weight retained) | 0.0% at 63µm, 15% at 32µm |
| Pore Volume (%) | 20 |
| Setting Parameters | |
|---|---|
| Final setting time (minutes) | 18 |
| Initial setting time (minutes) | 14 |
| Linear Expansion (%) | 0.25 |
| Plaster to Water Ratio | |
|---|---|
| Plaster to water mix ratio (by weight) | 100/33 |
| Plaster to Water Ratio (by weight) | 3.03:1 |
| Water to plaster ratio ( by weight) | 33% |
Mixing utensils should always be clean and free of set plaster. Use clean 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 from 30 to 60 seconds. Stir vigorously with a spatula for 30 to 60 seconds to obtain a uniform mix. If mechanical mixing is used with or without vacuum, the mixing time will be much less than that for hand mixing. The time will be dependent on the type of mixer paddle and speed.
To obtain very fine detail and to exclude air bubbles, the plaster should be vibrated into the impression. The fluidity of the mix can be increased by increasing the proportion of water, however this will result in reduced strength and hardness.
Do not mix fresh plaster with that which has been mixed for some time previously.
Packaging available : 25kg
Shelf life : 6