Parameters
SPG-02
SPG-10
SPG-18
Clay content fraction of total mass, %
2-4
8-12
13-18
Uniformity coefficient, %
50-60
50-60
50-60
Average grain size, mm
0,19-0,22
0,19-0,22
0,19-0,22
Gas permeability at optimum humidity, units, minimum
90
60
50
Wet compressive strength, MPa, minimum
0,0075
0,015
0,05
Silicon dioxide content, %, minimum
96
96
96
Harmful impurities content, alkali-earth and alkali-metal oxides content, %,not more
1,8
1,8
1,8
Loss on ignition, %
1,0
1,0
1,0

Application: in foundry as mortar for moulds and cores and as ramming mixture for pouring ladles and mold castings.

SPG-02: production of building materials (concr­ete, mortar) and for building works of any nature.