Medical Plaster
Medical Plaster
Medical Plaster
Chemical Properties | |
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Chemical Composition | CaSO4.1/2H2O |
Chemical Name | Calcium sulphate hemihydrate |
Colour | Off-white, red, |
Minimum gypsum purity % | 90 |
Mechanical Properties | |
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Dry compressive strength (Mpa) | 8 |
Flexural Strength (MPa) | 3 |
Setting Parameters | |
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Final setting time (minutes) | 12 |
Initial setting time (minutes) | 4 |
Vicat Ring Fluidity (cm) | 19 |
Physical Properties | |
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Particle Size (% weight retained) | < 5% at 150 µm |
Plaster to Water Ratio | |
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Plaster to water mix ratio (by weight) | 100/80 |
Plaster to Water Ratio (by weight) | 1.25:1 |
Water to plaster ratio (by weight) | 80% |