Gypsum binder (alpha- hemihydrate of calcium sulfate CaSO4 * 0.5 H2O) is produced from natural gypsum stone and is a white fine powder obtained by grinding of natural gypsum stone with further heat treating it in an autoclave, followed by milling and separation.
Alternative names are alpha gypsum, technical gypsum, and high-strength gypsum.
Environmentally friendly material; there is the expert opinion. The products are certified in GOST R system
Production of molds and models in porcelain and ceramic industry, and mechanic engineering;
Production of dry construction mixes;
Casting of molds for parts in metallurgy and mechanic engineering;
Production of interior details.
Divergence from the net mass in accordance with GOST 26871 ± 1kg
Produced according to TU 21 RSFSR-153-90, MOD. 15
Water consumption for paste of standard consistency
Not more than 43% of weight of the binder
Setting time of standard consistency
Start (loss of solution mobility) - no earlier than 4.5 minutes
Finish (complete solution hardening) - not later than 20 minutes
The maximum residue on a sieve with a mesh size of 0.2 mm in clear - not more than 1%
Breaking strength of sample bars aged of 2 hours
Under bending - not less than 5.5 MPa. Under compression - not less than 13 MPa
Guaranteed storage life
6 months from the date of shipment in unopened original package. Storage in dry indoor spaces on wooden pallets. Material should be fully utilized after opening the original packaging
Content of metal impurities in the binder
Not more than 10 mg/kg
How to buy
Sales department for gypsum product: +7 (846) 269-64-25 (ext. 4085)
Sales department for gypsum boards and dry building mixes: +7 (846) 269-64-25 (ext. 4241)