Plaster of Paris of grade 16. Extra strong gypsum plaster powder

This is the UNIQUE MULTI-PURPOSE PRODUCT for:--

• Production of molds and models in porcelain and ceramic industry
• Production of dry construction mixes
• Construction of fire partitions
• Plugging of wells in oil industry
• Casting of molds for parts in metallurgy and mechanic engineering

MAIN CHARACTERISTICS

• The degree of grinding, the residue on a sieve with a mesh size of 0.2 mm - not more than 1%
• Strength of beam samples at the age of 2 hours is at least 16 MPa. Setting time - 4.5-20 minutes.
• The content of metal impurities in 1 kg of binder is not more than 10 mg.

SPECIFICATION

Degree of grinding, residue on a sieve with a mesh size of 0.2 mm,%, not more than 1

Strength limit of beam samples at the age of 2 hours, no less than

• under compression: 16 MPa (160 kgf/cm2)
• when bending: 6 MPa (60 kgf/cm2)

Setting time

• beginning, not earlier: 4,5 min
• end, no later: 20 min

Content of metal impurities in 1 kg of binder, no more than 10 mg.

What is Plaster or Paris?

Plaster of Paris is alpha gypsum plaster also known as high strength gypsum.

What is the difference between Plaster of Paris and building gypsum (beta gypsum)?

Alpha Gypsum is obtained by heating of gypsum stone under high pressure. Though both have the same chemical composition (CaSO4.1 / 2H2O), they differ in their crystallographic structures. In Beta plaster, crystals are needle-like and amorphous shaped, but in Alpha plaster they have a much more refined and geometrical shape. This structure of alpha gypsum crystals allows to obtain a low water demand, which subsequently leads to formation of less internal pores in products and it becomes more durable.