"Densita" Gypsum Rock
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This highest quality gypsum is obtained from mineral of highly compact crystallization put under strict and double selection and calcination under low temperatures but long time.
Characteristics
The crystal of this gypsum has minimum porosity and very regular shape that permits the use of very small amount of water: 25 cc/100 g of powder.
Compressive Strength
850 Kg/cm2 after 48 hr setting and using a rate of 25 cc water with 100 g powder.
Setting Expansion
The setting expansion for this gypsum is controlled in a very special way to get the minimum of 0.03% linear.
Grinding
90% pass through a 250 mesh.
“Vicat” Setting Time
Of 5 to 10 minutes.
Package
Plastic can with hermetic seal containing 25 Kg packed in 1 Kg polyethylene bags. Card box containing 10 Kg packed in 1 Kg polyethylene bags. It is made in white and pink.
Uses
Used for working models or dies of greater precision.
Physical Properties
Water to 100g of Powder |
25 – 30 mL |
|
Working Time |
3 – 5 minutes |
|
“Vicat” Time |
5 – 10 minutes |
|
Compressive Strength |
WET (1 hr) |
425 Kg/cm2 |
DRY (48 hrs) |
850 Kg/cm2 |
|
Setting Expansion |
0.03 % linear |
|
Particle Size |
62 micron |
|