- are refractory unburnt materials comprising refractory filling materials with specific granularity (aggregate) and aluminum cement. Storage time for refractory concretes with cement should not exceed 3 months. Depending on the thickness of concrete setting or shapes, granularity of concrete is adjusted in the following ranges: 0-3mm; 0-5mm; 0-10mm; 0-20mm.
Heat-resistant and refractory concretes are delivered in three forms:
FIBROUS MATERIALS