Alfa Gypsum
Nuh Yapı
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Product Description
Alfa gypsum is obtained by calcining gypsum stone under high pressure and has the chemical formula CaSO4.1/2H2O, making it chemically identical to beta gypsum but differing in crystal structure. While the crystal structure in beta gypsum is needle-like and amorphous, alfa gypsum has a geometric crystal structure. This difference manifests in application in that alfa gypsum achieves flowability when mixed with much less water than beta gypsum, and imparts high strength properties to alfa gypsum.
Alfa gypsum is preferred in various industrial fields due to its high mechanical strength.
Main Applications
- Ceramic mold gypsum
- Joint filler material
- Hobby plaster
- Building chemicals
- Orthopedic gypsum
- Dental gypsum
- Architectural and decorative embellishments
Technical Properties (Alfa Gypsum)
| Property | Value |
|---|---|
| Water/gypsum ratio (%) | 38-42 |
| Hemihydrate content (%) | >90 |
| Setting time start (min) | >3 |
| Setting time end (min) | <25 |
| Spread diameter (mm) | 160-220 |
| Crystal water (%) | 5.8-6.2 |
| Compressive strength (kg/cm2) | >400 |
| Bulk density (g/L) | 1100 |
Packaging and Shelf Life
| Property | Value |
|---|---|
| Packaging | Big bag, loose and bagged |
| Shelf life (max) | 6 months |
Manufactured in different fineness grades according to customer requirements.
Press Mold Gypsum
Main Applications
- Ceramic and porcelain production
- High strength
- Good permeability
- Alfa-based gypsum
- Long mold life
Storage
Must be stored in a closed and dry environment. It is not recommended to store gypsum-based products in open areas or in extremely humid environments. Humid environments cause changes in the physical properties of gypsums.
Technical Properties (Press Mold Gypsum)
| Property | Value |
|---|---|
| Chemical composition | CaSO4.1/2H2O |
| Water/gypsum ratio (%) | 30 |
| Gypsum-water mixing ratio (by weight) | 100/30 |
| Hemihydrate content (%) | >90 |
| Setting time start (min) | 10-15 |
| Spread diameter (mm) | 200-250 |
| Compressive strength (kg/cm2) | >500 |
| Particle size % weight | ≤ % 2 90μ (sieve residue) |
| Bulk density (g/L) | 1100±100 |
Packaging and Shelf Life
| Property | Value |
|---|---|
| Storage | Closed and dry storage |
| Shelf life (max) | 6 months |
Manufactured in different fineness grades according to customer requirements.
Machine-translated from French
Product Information
| Manufacturer | Nuh Yapı |
|---|
Documents
- SDS Safety data sheet
Documents for the product line
- Çerez Politikası Document