High-alumina cement VHC. It is intended for the preparation of heat-resistant concrete and non-flammable materials that can be used in cases where they are used at temperatures up to 16000С and are subject to mechanical and physical stresses, including those in the atmosphere, which is controlled in contact with non-ferrous metal melts or high-speed gas flows. Physical and mechanical properties: - Setting time:

	GC-40	VGC
Start, not before	45 min.	30 min.
End, not later than	15 hours	15 hours

- Compressive strength:

GC-40	VGC
At the age of 7 days, mPa	Not less than 40	Not less than 50

- Fire resistance 0 С:

GC-40	VGC
Not less than 1400	Not less than 1600

- Chemical composition of cements:   

Type of cement	Al2O3	CaO	Fe2O3	SiO2
GC-40	Not less than 35	—	—	—
VGC	55	Not less than 25	Not less than 5	No more 8